1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
use std::cmp::{min, Reverse};
use std::collections::{HashMap, HashSet};
use std::iter::Iterator;
use std::pin::Pin;
use std::str::FromStr;
use std::sync::atomic::{AtomicU16, Ordering};
use std::sync::Arc;
use std::time::{Duration, SystemTime, UNIX_EPOCH};

use anyhow::{anyhow, Result};
use ecies::symmetric::{sym_decrypt, sym_encrypt};
use futures::{Future, Stream};
use gl_client::credentials::{Device, Nobody};
use gl_client::node;
use gl_client::node::ClnClient;
use gl_client::pb::cln::listinvoices_invoices::ListinvoicesInvoicesStatus;
use gl_client::pb::cln::listinvoices_request::ListinvoicesIndex;
use gl_client::pb::cln::listpays_pays::ListpaysPaysStatus;
use gl_client::pb::cln::listpeerchannels_channels::ListpeerchannelsChannelsState::*;
use gl_client::pb::cln::listsendpays_request::ListsendpaysIndex;
use gl_client::pb::cln::{
    self, Amount, GetrouteRequest, GetrouteRoute, ListchannelsRequest,
    ListclosedchannelsClosedchannels, ListpaysPays, ListpeerchannelsChannels, ListsendpaysPayments,
    PreapproveinvoiceRequest, SendpayRequest, SendpayRoute, WaitsendpayRequest,
};
use gl_client::pb::{OffChainPayment, PayStatus, TrampolinePayRequest};
use gl_client::scheduler::Scheduler;
use gl_client::signer::model::greenlight::{amount, scheduler};
use gl_client::signer::Signer;
use sdk_common::prelude::*;
use serde::{Deserialize, Serialize};
use serde_json::{json, Map, Value};
use strum_macros::{Display, EnumString};
use tokio::join;
use tokio::sync::{mpsc, watch, Mutex};
use tokio::time::{sleep, Instant, MissedTickBehavior};
use tokio_stream::StreamExt;
use tonic::Streaming;

use crate::bitcoin::bech32::{u5, ToBase32};
use crate::bitcoin::blockdata::constants::WITNESS_SCALE_FACTOR;
use crate::bitcoin::hashes::Hash;
use crate::bitcoin::secp256k1::ecdsa::{RecoverableSignature, RecoveryId};
use crate::bitcoin::secp256k1::PublicKey;
use crate::bitcoin::secp256k1::Secp256k1;
use crate::bitcoin::util::bip32::{ChildNumber, ExtendedPrivKey};
use crate::bitcoin::{
    Address, OutPoint, Script, Sequence, Transaction, TxIn, TxOut, Txid, Witness,
};
use crate::lightning::util::message_signing::verify;
use crate::lightning_invoice::{RawBolt11Invoice, SignedRawBolt11Invoice};
use crate::node_api::{CreateInvoiceRequest, FetchBolt11Result, NodeAPI, NodeError, NodeResult};
use crate::persist::db::SqliteStorage;
use crate::persist::send_pays::{SendPay, SendPayStatus};
use crate::{models::*, LspInformation};
use crate::{NodeConfig, PrepareRedeemOnchainFundsRequest, PrepareRedeemOnchainFundsResponse};

const MAX_PAYMENT_AMOUNT_MSAT: u64 = 4294967000;
const MAX_INBOUND_LIQUIDITY_MSAT: u64 = 4000000000;
const TRAMPOLINE_BASE_FEE_MSAT: u64 = 4000;
const TRAMPOLINE_FEE_PPM: u64 = 5000;
const PAYMENT_STATE_PENDING: u8 = 1;
const PAYMENT_STATE_COMPLETE: u8 = 2;
const PAYMENT_STATE_FAILED: u8 = 4;

pub(crate) struct Greenlight {
    sdk_config: Config,
    signer: Mutex<Arc<Signer>>,
    device: Device,
    seed: Vec<u8>,
    gl_client: Mutex<Option<node::Client>>,
    node_client: Mutex<Option<ClnClient>>,
    persister: Arc<SqliteStorage>,
    inprogress_payments: AtomicU16,
}

#[derive(Serialize, Deserialize)]
struct InvoiceLabel {
    pub unix_milli: u128,
    pub payer_amount_msat: Option<u64>,
}

#[derive(Serialize, Deserialize)]
struct PaymentLabel {
    pub unix_nano: u128,
    pub trampoline: bool,
    pub client_label: Option<String>,
    pub amount_msat: u64,
}

impl Greenlight {
    /// Connects to a live node using the provided seed and config.
    /// If the node is not registered, it will try to recover it using the seed.
    /// If the node is not created, it will register it using the provided partner credentials
    /// or invite code
    /// If the node is already registered and an existing credentials were found, it will try to
    /// connect to the node using these credentials.
    pub async fn connect(
        config: Config,
        seed: Vec<u8>,
        restore_only: Option<bool>,
        persister: Arc<SqliteStorage>,
    ) -> NodeResult<Self> {
        // Derive the encryption key from the seed
        let temp_signer = Arc::new(Signer::new(
            seed.clone(),
            config.network.into(),
            Nobody::new(),
        )?);
        let encryption_key = Self::derive_bip32_key(
            config.network,
            &temp_signer,
            vec![ChildNumber::from_hardened_idx(140)?, ChildNumber::from(0)],
        )?
        .to_priv()
        .to_bytes();
        let encryption_key_slice = encryption_key.as_slice();

        let register_credentials = match config.node_config.clone() {
            NodeConfig::Greenlight { config } => config,
        };

        // Query for the existing credentials
        let mut parsed_credentials =
            Self::get_node_credentials(config.network, &temp_signer, persister.clone())?
                .ok_or(NodeError::credentials("No credentials found"));
        if parsed_credentials.is_err() {
            info!("No credentials found, trying to recover existing node");
            parsed_credentials = match Self::recover(config.network, seed.clone()).await {
                Ok(creds) => Ok(creds),
                Err(_) => {
                    match restore_only.unwrap_or(false) {
                        false => {
                            // If we got here it means we failed to recover so we need to register a new node
                            info!("Failed to recover node, registering new one");
                            let credentials = Self::register(
                                config.clone().network,
                                seed.clone(),
                                register_credentials.partner_credentials,
                                register_credentials.invite_code,
                            )
                            .await?;
                            Ok(credentials)
                        }
                        true => {
                            return Err(NodeError::RestoreOnly("Node does not exist".to_string()));
                        }
                    }
                }
            }
        }

        // Persist the connection credentials for future use and return the node instance
        match parsed_credentials {
            Ok(creds) => {
                let temp_scheduler = Scheduler::new(config.network.into(), creds.clone()).await?;
                debug!("upgrading credentials");
                let creds = creds.upgrade(&temp_scheduler, &temp_signer).await?;
                debug!("upgrading credentials succeeded");
                let encrypted_creds = sym_encrypt(encryption_key_slice, &creds.to_bytes());
                match encrypted_creds {
                    Some(c) => {
                        persister.set_gl_credentials(c)?;
                        Greenlight::new(config, seed, creds.clone(), persister)
                    }
                    None => Err(NodeError::generic("Failed to encrypt credentials")),
                }
            }
            Err(_) => Err(NodeError::credentials("Failed to get gl credentials")),
        }
    }

    fn new(
        sdk_config: Config,
        seed: Vec<u8>,
        device: Device,
        persister: Arc<SqliteStorage>,
    ) -> NodeResult<Greenlight> {
        let greenlight_network = sdk_config.network.into();
        let signer = Signer::new(seed.clone(), greenlight_network, device.clone())?;
        Ok(Greenlight {
            sdk_config,
            signer: Mutex::new(Arc::new(signer)),
            device,
            seed,
            gl_client: Mutex::new(None),
            node_client: Mutex::new(None),
            persister,
            inprogress_payments: AtomicU16::new(0),
        })
    }

    async fn get_signer(&self) -> Arc<Signer> {
        Arc::clone(&*self.signer.lock().await)
    }

    fn derive_bip32_key(
        network: Network,
        signer: &Arc<Signer>,
        path: Vec<ChildNumber>,
    ) -> NodeResult<ExtendedPrivKey> {
        Ok(
            ExtendedPrivKey::new_master(network.into(), &signer.bip32_ext_key())?
                .derive_priv(&Secp256k1::new(), &path)?,
        )
    }

    fn legacy_derive_bip32_key(
        network: Network,
        signer: &Arc<Signer>,
        path: Vec<ChildNumber>,
    ) -> NodeResult<ExtendedPrivKey> {
        Ok(
            ExtendedPrivKey::new_master(network.into(), &signer.legacy_bip32_ext_key())?
                .derive_priv(&Secp256k1::new(), &path)?,
        )
    }

    async fn register(
        network: Network,
        seed: Vec<u8>,
        register_credentials: Option<GreenlightCredentials>,
        invite_code: Option<String>,
    ) -> Result<Device> {
        if invite_code.is_some() && register_credentials.is_some() {
            return Err(anyhow!("Cannot specify both invite code and credentials"));
        }
        let greenlight_network = network.into();
        let creds = match register_credentials {
            Some(creds) => {
                debug!("registering with credentials");
                Nobody {
                    cert: creds.developer_cert,
                    key: creds.developer_key,
                    ..Default::default()
                }
            }
            None => Nobody::new(),
        };

        let signer = Signer::new(seed, greenlight_network, creds.clone())?;
        let scheduler = Scheduler::new(greenlight_network, creds).await?;

        let register_res: scheduler::RegistrationResponse =
            scheduler.register(&signer, invite_code).await?;

        Ok(Device::from_bytes(register_res.creds))
    }

    async fn recover(network: Network, seed: Vec<u8>) -> Result<Device> {
        let greenlight_network = network.into();
        let credentials = Nobody::new();
        let signer = Signer::new(seed, greenlight_network, credentials.clone())?;
        let scheduler = Scheduler::new(greenlight_network, credentials).await?;
        let recover_res: scheduler::RecoveryResponse = scheduler.recover(&signer).await?;

        Ok(Device::from_bytes(recover_res.creds))
    }

    async fn get_client(&self) -> NodeResult<node::Client> {
        let mut gl_client = self.gl_client.lock().await;
        if gl_client.is_none() {
            let scheduler = Scheduler::new(self.sdk_config.network.into(), self.device.clone())
                .await
                .map_err(|e| NodeError::ServiceConnectivity(e.to_string()))?;
            *gl_client = Some(scheduler.node().await?);
        }
        Ok(gl_client.clone().unwrap())
    }

    pub(crate) async fn get_node_client(&self) -> NodeResult<node::ClnClient> {
        let mut node_client = self.node_client.lock().await;
        if node_client.is_none() {
            let scheduler = Scheduler::new(self.sdk_config.network.into(), self.device.clone())
                .await
                .map_err(|e| NodeError::ServiceConnectivity(e.to_string()))?;
            *node_client = Some(scheduler.node().await?);
        }
        Ok(node_client.clone().unwrap())
    }

    fn get_node_credentials(
        network: Network,
        signer: &Arc<Signer>,
        persister: Arc<SqliteStorage>,
    ) -> NodeResult<Option<Device>> {
        // Derive the encryption key from the seed
        let encryption_key = Self::derive_bip32_key(
            network,
            signer,
            vec![ChildNumber::from_hardened_idx(140)?, ChildNumber::from(0)],
        )?
        .to_priv()
        .to_bytes();
        let encryption_key_slice = encryption_key.as_slice();

        let legacy_encryption_key = Self::legacy_derive_bip32_key(
            network,
            signer,
            vec![ChildNumber::from_hardened_idx(140)?, ChildNumber::from(0)],
        )?
        .to_priv()
        .to_bytes();
        let legacy_encryption_key_slice = legacy_encryption_key.as_slice();

        match persister.get_gl_credentials()? {
            Some(encrypted_creds) => {
                let mut decrypted_credentials =
                    sym_decrypt(encryption_key_slice, encrypted_creds.as_slice());
                if decrypted_credentials.is_none() {
                    info!("Failed to decrypt credentials, trying legacy key");
                    decrypted_credentials =
                        sym_decrypt(legacy_encryption_key_slice, encrypted_creds.as_slice());
                }
                match decrypted_credentials {
                    Some(decrypted_creds) => {
                        let credentials = Device::from_bytes(decrypted_creds.as_slice());
                        if credentials.cert.is_empty() {
                            Err(NodeError::credentials("Unable to parse credentials"))
                        } else {
                            Ok(Some(credentials))
                        }
                    }
                    None => Err(NodeError::credentials(
                        "Failed to decrypt credentials, seed doesn't match existing node",
                    )),
                }
            }
            None => Ok(None),
        }
    }

    async fn fetch_outgoing_payment_with_retry(
        mut cln_client: node::ClnClient,
        payment_hash: Vec<u8>,
    ) -> Result<cln::ListpaysPays> {
        let mut response = cln::ListpaysResponse::default();
        let mut retry = 0;
        let max_retries = 20;
        while response.pays.is_empty() && retry < max_retries {
            response = cln_client
                .list_pays(cln::ListpaysRequest {
                    payment_hash: Some(payment_hash.clone()),
                    status: Some(cln::listpays_request::ListpaysStatus::Complete.into()),
                    ..cln::ListpaysRequest::default()
                })
                .await?
                .into_inner();
            if response.pays.is_empty() {
                debug!("fetch outgoing payment failed, retrying in 100ms...");
                sleep(Duration::from_millis(100)).await;
            }
            retry += 1;
        }

        // CLN also returns failed ListpaysPays along with the complete one
        debug!("list_pays: {:?}", response.pays);
        let pays: Vec<ListpaysPays> = response
            .pays
            .into_iter()
            .filter(|pay| pay.status() == cln::listpays_pays::ListpaysPaysStatus::Complete)
            .collect();

        if pays.is_empty() {
            return Err(anyhow!("Payment not found"));
        }
        Ok(pays[0].clone())
    }

    async fn fetch_channels_and_balance_with_retry(
        cln_client: node::ClnClient,
        persister: Arc<SqliteStorage>,
        match_local_balance: bool,
    ) -> NodeResult<(
        Vec<cln::ListpeerchannelsChannels>,
        Vec<cln::ListpeerchannelsChannels>,
        Vec<String>,
        u64,
    )> {
        let (mut all_channels, mut opened_channels, mut connected_peers, mut channels_balance) =
            Greenlight::fetch_channels_and_balance(cln_client.clone()).await?;
        if match_local_balance {
            let node_state = persister.get_node_state()?;
            if let Some(state) = node_state {
                let mut retry_count = 0;
                while state.channels_balance_msat != channels_balance && retry_count < 10 {
                    warn!("balance matching local state is required and not yet satisfied, retrying in 100ms...");
                    sleep(Duration::from_millis(100)).await;
                    (
                        all_channels,
                        opened_channels,
                        connected_peers,
                        channels_balance,
                    ) = Greenlight::fetch_channels_and_balance(cln_client.clone()).await?;
                    retry_count += 1;
                }
            }
        }
        Ok((
            all_channels,
            opened_channels,
            connected_peers,
            channels_balance,
        ))
    }

    async fn fetch_channels_and_balance(
        mut cln_client: node::ClnClient,
    ) -> NodeResult<(
        Vec<cln::ListpeerchannelsChannels>,
        Vec<cln::ListpeerchannelsChannels>,
        Vec<String>,
        u64,
    )> {
        // list all channels
        let peerchannels = cln_client
            .list_peer_channels(cln::ListpeerchannelsRequest::default())
            .await?
            .into_inner();

        // filter only connected peers
        let connected_peers: Vec<String> = peerchannels
            .channels
            .iter()
            .filter(|channel| channel.peer_connected())
            .filter_map(|channel| channel.peer_id.clone())
            .map(hex::encode)
            .collect::<HashSet<_>>()
            .into_iter()
            .collect();

        // filter only opened channels
        let opened_channels: Vec<cln::ListpeerchannelsChannels> = peerchannels
            .channels
            .iter()
            .filter(|c| c.state() == ChanneldNormal)
            .cloned()
            .collect();

        // calculate channels balance only from opened channels
        let channels_balance = opened_channels
            .iter()
            .map(|c| Channel::from(c.clone()))
            .map(|c| c.spendable_msat)
            .sum::<u64>();
        Ok((
            peerchannels.channels,
            opened_channels,
            connected_peers,
            channels_balance,
        ))
    }

    async fn list_funds(&self) -> Result<cln::ListfundsResponse> {
        let mut client = self.get_node_client().await?;
        let funds: cln::ListfundsResponse = client
            .list_funds(cln::ListfundsRequest::default())
            .await?
            .into_inner();
        Ok(funds)
    }

    async fn on_chain_balance(&self, funds: &cln::ListfundsResponse) -> Result<u64> {
        let on_chain_balance = funds.outputs.iter().fold(0, |a, b| {
            if b.reserved {
                return a;
            }
            a + b.amount_msat.clone().unwrap_or_default().msat
        });
        Ok(on_chain_balance)
    }

    async fn pending_onchain_balance(
        &self,
        peer_channels: &[cln::ListpeerchannelsChannels],
    ) -> Result<u64> {
        let pending_onchain_balance = peer_channels.iter().fold(0, |a, b| match b.state() {
            ChanneldShuttingDown | ClosingdSigexchange | ClosingdComplete | AwaitingUnilateral
            | FundingSpendSeen => a + b.to_us_msat.clone().unwrap_or_default().msat,

            // When we  unilaterally close the channel it will get status as `AwaitingUnilateral`
            // first, but when the closing transaction is confirmed onchain the funds receive status
            // as `Onchain`. Though if we closed the channel we'll have to wait for the timelock to
            // pass before the funds can be spent.
            Onchain => {
                if b.closer() == cln::ChannelSide::Local
                    && b.status
                        .last()
                        .is_some_and(|status| status.contains("DELAYED_OUTPUT_TO_US"))
                {
                    a + b.to_us_msat.clone().unwrap_or_default().msat
                } else {
                    a
                }
            }
            _ => a,
        });
        info!("pending_onchain_balance is {}", pending_onchain_balance);
        Ok(pending_onchain_balance)
    }

    // Collect utxos from onchain funds
    async fn utxos(&self, funds: cln::ListfundsResponse) -> Result<Vec<UnspentTransactionOutput>> {
        let utxos: Vec<UnspentTransactionOutput> = funds
            .outputs
            .iter()
            .map(|output| UnspentTransactionOutput {
                txid: output.txid.clone(),
                outnum: output.output,
                amount_millisatoshi: output
                    .amount_msat
                    .as_ref()
                    .map(|a| a.msat)
                    .unwrap_or_default(),
                address: output.address.clone().unwrap_or_default(),
                reserved: output.reserved,
            })
            .collect();
        Ok(utxos)
    }

    async fn build_payment_path(
        &self,
        route: &Vec<GetrouteRoute>,
        first_edge: PaymentPathEdge,
    ) -> NodeResult<PaymentPath> {
        let mut client = self.get_node_client().await?;
        let mut hops = vec![first_edge];

        for hop in route {
            let hopchannels = client
                .list_channels(ListchannelsRequest {
                    short_channel_id: Some(hop.channel.clone()),
                    source: None,
                    destination: None,
                })
                .await?
                .into_inner()
                .channels;

            let first_channel = hopchannels.first().ok_or(NodeError::RouteNotFound(format!(
                "Channel not found {}",
                hop.channel.clone()
            )))?;

            info!("found channel in route: {:?}", first_channel);
            hops.push(PaymentPathEdge {
                base_fee_msat: first_channel.base_fee_millisatoshi as u64,
                fee_per_millionth: first_channel.fee_per_millionth as u64,
                node_id: hop.id.clone(),
                short_channel_id: hop.channel.clone(),
                channel_delay: first_channel.delay as u64,
            });
        }
        Ok(PaymentPath { edges: hops })
    }

    async fn max_sendable_amount_from_peer(
        &self,
        via_peer_id: Vec<u8>,
        via_peer_channels: Vec<ListpeerchannelsChannels>,
        payee_node_id: Option<Vec<u8>>,
        max_hops: u32,
        last_hop_hint: Option<&RouteHintHop>,
    ) -> NodeResult<Vec<MaxChannelAmount>> {
        let mut client = self.get_node_client().await?;

        // Consider the hints as part of the route. If there is a routing hint we will
        // attempt to calculate the path until the last hop in the hint and then add
        // the last hop to the path.
        let (last_node, max_hops) = match last_hop_hint {
            Some(hop) => (hex::decode(&hop.src_node_id)?, max_hops - 1),
            None => match payee_node_id.clone() {
                Some(node_id) => (node_id, max_hops),
                None => {
                    return Err(NodeError::RouteNotFound(
                        "No payee node id or last hop hints provided, cannot calculate max amount"
                            .to_string(),
                    ));
                }
            },
        };

        // fetch a route from greenlight
        info!(
            "calling get_route for peer {} to node {}, max_hops: {}",
            hex::encode(via_peer_id.clone()),
            hex::encode(last_node.clone()),
            max_hops - 1
        );
        let route_result = client
            .get_route(GetrouteRequest {
                id: last_node.clone(),
                amount_msat: Some(Amount { msat: 0 }),
                riskfactor: 0,
                cltv: None,
                fromid: Some(via_peer_id.clone()),
                fuzzpercent: Some(0),
                exclude: vec![],
                // we deduct the first hop that we calculate manually
                maxhops: Some(max_hops - 1),
            })
            .await;

        // In case we have no route better to return no amounts for this peer's channels.
        if let Err(e) = route_result {
            error!(
                "Failed to get route for peer {}: {}",
                hex::encode(via_peer_id.clone()),
                e
            );
            return Ok(vec![]);
        }

        let route_response = route_result?.into_inner();
        info!(
            "max_sendable_amount: route response = {:?}",
            route_response.route
        );

        // We fetch the opened channels so can calculate max amount to send for each channel
        let opened_channels: Vec<cln::ListpeerchannelsChannels> = via_peer_channels
            .iter()
            .filter(|c| c.state() == ChanneldNormal)
            .cloned()
            .collect();

        let mut max_per_channel = vec![];
        for c in opened_channels {
            let chan_id = c
                .clone()
                .channel_id
                .ok_or(NodeError::generic("Empty channel id"))?;

            // First hop is forwarding so no fees and delays.
            let first_edge = PaymentPathEdge {
                base_fee_msat: 0,
                fee_per_millionth: 0,
                node_id: via_peer_id.clone(),
                short_channel_id: c.clone().short_channel_id.unwrap_or_default(),
                channel_delay: 0,
            };

            // convert the route to a payment path so we can calculate the amount to forward for each hop
            let mut payment_path = self
                .build_payment_path(&route_response.route, first_edge)
                .await?;

            // Add the last hop hints (if any) to the route
            if let Some(hint) = last_hop_hint {
                payment_path.edges.extend(vec![PaymentPathEdge {
                    base_fee_msat: hint.fees_base_msat as u64,
                    fee_per_millionth: hint.fees_proportional_millionths as u64,
                    node_id: payee_node_id.clone().unwrap_or_default(),
                    short_channel_id: hint.short_channel_id.clone(),
                    channel_delay: hint.cltv_expiry_delta,
                }])
            }

            info!("max_sendable_amount: route_hops = {:?}", payment_path.edges);

            // go over each hop and calculate the amount to forward.
            let max_payment_amount =
                payment_path.final_hop_amount(c.clone().spendable_msat.unwrap_or_default().msat);
            max_per_channel.push(MaxChannelAmount {
                channel_id: hex::encode(chan_id),
                amount_msat: max_payment_amount,
                path: payment_path,
            });
        }

        Ok(max_per_channel)
    }

    /// Get open peer channels (private and public) as raw protobuf structs, indexed by peer pubkey
    async fn get_open_peer_channels_pb(
        &self,
    ) -> NodeResult<HashMap<Vec<u8>, cln::ListpeerchannelsChannels>> {
        let mut node_client = self.get_node_client().await?;
        // Get the peer channels
        let peer_channels = node_client
            .list_peer_channels(cln::ListpeerchannelsRequest::default())
            .await?
            .into_inner();

        let open_peer_channels: HashMap<Vec<u8>, cln::ListpeerchannelsChannels> = peer_channels
            .channels
            .into_iter()
            .filter(|c| {
                c.state == Some(cln::ChannelState::ChanneldNormal as i32) && c.peer_id.is_some()
            })
            .map(|c| (c.peer_id.clone().unwrap(), c))
            .collect();
        Ok(open_peer_channels)
    }

    async fn with_keep_alive<T, F>(&self, f: F) -> T
    where
        F: Future<Output = T>,
    {
        _ = self.inprogress_payments.fetch_add(1, Ordering::Relaxed);
        let res = f.await;
        _ = self.inprogress_payments.fetch_sub(1, Ordering::Relaxed);
        res
    }

    // pulls transactions from greenlight based on last sync timestamp.
    // greenlight gives us the payments via API and for received payments we are looking for settled invoices.
    async fn pull_transactions(
        &self,
        sync_state: &SyncState,
        htlc_list: Vec<Htlc>,
    ) -> NodeResult<(SyncState, Vec<Payment>)> {
        let (receive_payments_res, send_payments_res) = join!(
            self.pull_receive_payments(&sync_state.list_invoices_index),
            self.pull_send_payments(&sync_state.send_pays_index, htlc_list),
        );

        let (receive_payments, list_invoices_index) = receive_payments_res?;
        let (send_payments, send_pays_index) = send_payments_res?;
        let mut new_state = sync_state.clone();
        new_state.list_invoices_index = list_invoices_index;
        new_state.send_pays_index = send_pays_index;

        let mut payments: Vec<Payment> = Vec::new();
        payments.extend(receive_payments);
        payments.extend(send_payments);

        Ok((new_state, payments))
    }

    async fn pull_receive_payments(
        &self,
        state: &SyncIndex,
    ) -> NodeResult<(Vec<Payment>, SyncIndex)> {
        let mut client = self.get_node_client().await?;
        let created_invoices = client
            .list_invoices(cln::ListinvoicesRequest {
                index: Some(ListinvoicesIndex::Created.into()),
                start: Some(state.created),
                ..Default::default()
            })
            .await?
            .into_inner();
        let updated_invoices = client
            .list_invoices(cln::ListinvoicesRequest {
                index: Some(ListinvoicesIndex::Updated.into()),
                start: Some(state.updated),
                ..Default::default()
            })
            .await?
            .into_inner();
        let mut new_state = state.clone();
        if let Some(last) = created_invoices.invoices.last() {
            new_state.created = last.created_index()
        }
        if let Some(last) = updated_invoices.invoices.last() {
            new_state.updated = last.updated_index()
        }

        let received_payments: NodeResult<Vec<Payment>> = created_invoices
            .invoices
            .into_iter()
            .chain(updated_invoices.invoices.into_iter())
            .filter(|i| i.status() == ListinvoicesInvoicesStatus::Paid)
            .map(TryInto::try_into)
            .collect();

        Ok((received_payments?, new_state))
    }

    async fn pull_send_payments(
        &self,
        state: &SyncIndex,
        htlc_list: Vec<Htlc>,
    ) -> NodeResult<(Vec<Payment>, SyncIndex)> {
        let mut client = self.get_node_client().await?;
        let created_send_pays = client
            .list_send_pays(cln::ListsendpaysRequest {
                index: Some(ListsendpaysIndex::Created.into()),
                start: Some(state.created),
                ..Default::default()
            })
            .await?
            .into_inner();
        let updated_send_pays = client
            .list_send_pays(cln::ListsendpaysRequest {
                index: Some(ListsendpaysIndex::Updated.into()),
                start: Some(state.updated),
                ..Default::default()
            })
            .await?
            .into_inner();

        let mut new_state = state.clone();
        if let Some(last) = created_send_pays.payments.last() {
            new_state.created = last.created_index()
        }
        if let Some(last) = updated_send_pays.payments.last() {
            new_state.updated = last.updated_index()
        }

        let hash_groups: HashMap<_, _> = created_send_pays
            .payments
            .iter()
            .chain(updated_send_pays.payments.iter())
            .map(|p| {
                let mut key = hex::encode(&p.payment_hash);
                key.push('|');
                key.push_str(&p.groupid.to_string());
                (key, (p.payment_hash.clone(), p.groupid))
            })
            .collect();
        let hash_group_values: Vec<_> = hash_groups.values().cloned().collect();

        self.persister.insert_send_pays(
            &created_send_pays
                .payments
                .into_iter()
                .map(TryInto::try_into)
                .collect::<Result<Vec<_>, _>>()?,
        )?;
        self.persister.insert_send_pays(
            &updated_send_pays
                .payments
                .into_iter()
                .map(TryInto::try_into)
                .collect::<Result<Vec<_>, _>>()?,
        )?;

        // Now all new send_pays are persisted. Retrieve the send_pays for the
        // payment hashes, to ensure any send_pays belonging to the same payment
        // that were not fetched in this round are also included.
        let send_pays = self.persister.list_send_pays(&hash_group_values)?;

        // Now that all send_pays belonging to all payments are here, aggregate
        // the send_pays into payments. This is a copy of what core lightning's
        // listpays function does under the hood.
        let mut outbound_payments: HashMap<String, SendPayAgg> = HashMap::new();
        for send_pay in send_pays {
            let mut key = hex::encode(&send_pay.payment_hash);
            key.push('|');
            key.push_str(&send_pay.groupid.to_string());
            let payment = outbound_payments.entry(key).or_insert(SendPayAgg {
                state: 0,
                created_at: send_pay.created_at,
                payment_hash: send_pay.payment_hash,
                bolt11: None,
                destination: None,
                label: None,
                description: None,
                preimage: None,
                amount_sent: 0,
                amount: Some(0),
                num_nonfailed_parts: 0,
            });
            if payment.bolt11.is_none() {
                payment.bolt11 = send_pay.bolt11;
            }
            if payment.destination.is_none() {
                payment.destination = send_pay.destination;
            }
            if payment.description.is_none() {
                payment.description = send_pay.description;
            }
            if payment.label.is_none() {
                payment.label = send_pay.label;
            }
            if payment.preimage.is_none() {
                payment.preimage = send_pay.payment_preimage;
            }
            if send_pay.created_at < payment.created_at {
                payment.created_at = send_pay.created_at;
            }

            match send_pay.status {
                SendPayStatus::Pending => {
                    add_amount_sent(payment, send_pay.amount_sent_msat, send_pay.amount_msat);
                    payment.num_nonfailed_parts += 1;
                    payment.state |= PAYMENT_STATE_PENDING;
                }
                SendPayStatus::Failed => {
                    payment.state |= PAYMENT_STATE_FAILED;
                }
                SendPayStatus::Complete => {
                    add_amount_sent(payment, send_pay.amount_sent_msat, send_pay.amount_msat);
                    payment.num_nonfailed_parts += 1;
                    payment.state |= PAYMENT_STATE_COMPLETE;
                }
            }
        }

        let outbound_payments: Vec<Payment> = outbound_payments
            .into_values()
            .map(TryInto::try_into)
            .collect::<Result<Vec<_>, _>>()?;
        let outbound_payments = update_payment_expirations(outbound_payments, htlc_list)?;
        Ok((outbound_payments, new_state))
    }

    async fn wait_channel_reestablished(&self, path: &PaymentPath) -> NodeResult<()> {
        let deadline =
            Instant::now()
                .checked_add(Duration::from_secs(20))
                .ok_or(NodeError::generic(
                    "Failed to set channel establishment deadline",
                ))?;

        while Instant::now().le(&deadline) && !self.poll_channel_reestablished(path).await? {
            tokio::time::sleep(Duration::from_millis(50)).await
        }

        Ok(())
    }

    async fn poll_channel_reestablished(&self, path: &PaymentPath) -> NodeResult<bool> {
        let edge = match path.edges.first() {
            Some(edge) => edge,
            None => return Err(NodeError::generic("Channel not found")),
        };
        let mut client = self.get_node_client().await?;
        let res = client
            .list_peer_channels(cln::ListpeerchannelsRequest {
                id: Some(edge.node_id.clone()),
            })
            .await?
            .into_inner();
        let channel = match res.channels.iter().find(|c| {
            match (
                c.alias.as_ref().and_then(|a| a.local.as_ref()),
                c.short_channel_id.as_ref(),
            ) {
                (Some(alias), Some(short_channel_id)) => {
                    *alias == edge.short_channel_id || *short_channel_id == edge.short_channel_id
                }
                (Some(alias), None) => *alias == edge.short_channel_id,
                (None, Some(short_channel_id)) => *short_channel_id == edge.short_channel_id,
                (None, None) => false,
            }
        }) {
            Some(channel) => channel,
            None => return Err(NodeError::generic("Channel not found")),
        };

        if let Some(peer_connected) = channel.peer_connected {
            if !peer_connected {
                return Ok(false);
            }
        }

        if !channel
            .status
            .iter()
            .any(|s| s.contains("Channel ready") || s.contains("Reconnected, and reestablished"))
        {
            return Ok(false);
        }

        Ok(true)
    }
}

fn add_amount_sent(
    agg: &mut SendPayAgg,
    send_pay_amount_sent_msat: Option<u64>,
    send_pay_amount_msat: Option<u64>,
) {
    if let Some(amount_sent_msat) = send_pay_amount_sent_msat {
        agg.amount_sent += amount_sent_msat;
    }

    let amount_msat = match send_pay_amount_msat {
        Some(amount_msat) => amount_msat,
        None => {
            agg.amount = None;
            return;
        }
    };

    if let Some(amount) = agg.amount {
        agg.amount = Some(amount + amount_msat);
    }
}

#[derive(Clone, Debug, Default, Deserialize, Serialize)]
struct SyncIndex {
    pub created: u64,
    pub updated: u64,
}

#[derive(Clone, Debug, Default, Deserialize, Serialize)]
struct SyncState {
    pub send_pays_index: SyncIndex,
    pub list_invoices_index: SyncIndex,
}

#[tonic::async_trait]
impl NodeAPI for Greenlight {
    async fn reconnect(&self) {
        debug!("Reconnect hibernation: request received");

        // Force refresh existing grpc clients
        *self.gl_client.lock().await = None;
        *self.node_client.lock().await = None;

        // Create a new signer
        debug!("Reconnect hibernation: creating new signer");
        let new_signer = match Signer::new(
            self.seed.clone(),
            self.sdk_config.network.into(),
            self.device.clone(),
        ) {
            Ok(new_signer) => new_signer,
            Err(e) => {
                error!(
                    "Reconnect hibernation: failed to create new signer after reconnect request: {:?}",
                    e
                );
                return;
            }
        };
        *self.signer.lock().await = Arc::new(new_signer);
    }

    async fn node_credentials(&self) -> NodeResult<Option<NodeCredentials>> {
        Ok(Self::get_node_credentials(
            self.sdk_config.network,
            &self.get_signer().await,
            self.persister.clone(),
        )?
        .map(|credentials| NodeCredentials::Greenlight {
            credentials: GreenlightDeviceCredentials {
                device: credentials.to_bytes(),
            },
        }))
    }

    async fn configure_node(&self, close_to_address: Option<String>) -> NodeResult<()> {
        match close_to_address {
            Some(close_to_addr) => {
                self.get_client()
                    .await?
                    .configure(gl_client::pb::GlConfig { close_to_addr })
                    .await
                    .map_err(|e| NodeError::Generic(format!("Unable to set node config: {}", e)))?;
            }
            None => {
                self.get_node_client()
                    .await?
                    .del_datastore(cln::DeldatastoreRequest {
                        key: vec!["glconf".to_string(), "request".to_string()],
                        generation: None,
                    })
                    .await
                    .map_err(|e| {
                        NodeError::Generic(format!("Unable to delete node config: {}", e))
                    })?;
            }
        }
        Ok(())
    }

    async fn create_invoice(&self, request: CreateInvoiceRequest) -> NodeResult<String> {
        let mut client = self.get_node_client().await?;
        let label = serde_json::to_string(&InvoiceLabel {
            unix_milli: SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis(),
            payer_amount_msat: request.payer_amount_msat,
        })?;
        let cln_request = cln::InvoiceRequest {
            amount_msat: Some(cln::AmountOrAny {
                value: Some(cln::amount_or_any::Value::Amount(cln::Amount {
                    msat: request.amount_msat,
                })),
            }),
            label,
            description: request.description,
            preimage: request.preimage,
            deschashonly: request.use_description_hash,
            expiry: request.expiry.map(|e| e as u64),
            fallbacks: vec![],
            cltv: request.cltv,
        };

        let res = client.invoice(cln_request).await?.into_inner();
        Ok(res.bolt11)
    }

    async fn fetch_bolt11(&self, payment_hash: Vec<u8>) -> NodeResult<Option<FetchBolt11Result>> {
        let request = cln::ListinvoicesRequest {
            payment_hash: Some(payment_hash),
            ..Default::default()
        };

        let result = self
            .get_node_client()
            .await?
            .list_invoices(request)
            .await?
            .into_inner()
            .invoices
            .first()
            .cloned()
            .and_then(|invoice| {
                invoice.bolt11.map(|bolt11| FetchBolt11Result {
                    bolt11,
                    payer_amount_msat: serde_json::from_str::<InvoiceLabel>(&invoice.label)
                        .map(|label| label.payer_amount_msat)
                        .ok()
                        .flatten(),
                })
            });

        Ok(result)
    }

    // implement pull changes from greenlight
    async fn pull_changed(
        &self,
        sync_state: Option<Value>,
        match_local_balance: bool,
    ) -> NodeResult<SyncResponse> {
        let sync_state: SyncState = match sync_state {
            Some(sync_state) => serde_json::from_value(sync_state)?,
            None => SyncState::default(),
        };

        let node_client = self.get_node_client().await?;

        // get node info
        let mut node_info_client = node_client.clone();
        let node_info_future = node_info_client.getinfo(cln::GetinfoRequest::default());

        // list both off chain funds and on chain fudns
        let funds_future = self.list_funds();

        // Fetch closed channels from greenlight
        let mut closed_channels_client = node_client.clone();
        let closed_channels_future = closed_channels_client
            .list_closed_channels(cln::ListclosedchannelsRequest { id: None });

        // calculate the node new balance and in case the caller signals balance has changed
        // keep polling until the balance is updated
        let balance_future = Greenlight::fetch_channels_and_balance_with_retry(
            node_client.clone(),
            self.persister.clone(),
            match_local_balance,
        );

        let (node_info_res, funds_res, closed_channels_res, balance_res) = tokio::join!(
            node_info_future,
            funds_future,
            closed_channels_future,
            balance_future
        );

        let node_info = node_info_res?.into_inner();
        let funds = funds_res?;
        let closed_channels = closed_channels_res?.into_inner().closedchannels;
        let (all_channels, opened_channels, connected_peers, channels_balance) = balance_res?;
        let forgotten_closed_channels: NodeResult<Vec<Channel>> = closed_channels
            .into_iter()
            .filter(|cc| {
                all_channels
                    .iter()
                    .all(|ac| ac.funding_txid != Some(cc.funding_txid.clone()))
            })
            .map(TryInto::try_into)
            .collect();
        info!("forgotten_closed_channels {:?}", forgotten_closed_channels);

        let mut all_channel_models: Vec<Channel> =
            all_channels.clone().into_iter().map(|c| c.into()).collect();
        all_channel_models.extend(forgotten_closed_channels?);

        // calculate onchain balance
        let onchain_balance = self.on_chain_balance(&funds).await?;
        let pending_onchain_balance = self.pending_onchain_balance(&all_channels).await?;
        let utxos: Vec<UnspentTransactionOutput> = self.utxos(funds).await?;

        // calculate payment limits and inbound liquidity
        let mut max_payable: u64 = 0;
        let mut max_receivable_single_channel: u64 = 0;
        let mut total_inbound_liquidity_msats: u64 = 0;
        opened_channels.iter().try_for_each(|c| -> Result<()> {
            max_payable += c
                .spendable_msat
                .as_ref()
                .map(|a| a.msat)
                .unwrap_or_default();
            let receivable_amount = c
                .receivable_msat
                .as_ref()
                .map(|a| a.msat)
                .unwrap_or_default();
            total_inbound_liquidity_msats += receivable_amount;
            if receivable_amount > max_receivable_single_channel {
                max_receivable_single_channel = receivable_amount;
            }
            Ok(())
        })?;

        let max_allowed_to_receive_msats =
            MAX_INBOUND_LIQUIDITY_MSAT.saturating_sub(channels_balance);
        let node_pubkey = hex::encode(node_info.id);
        // construct the node state
        let node_state = NodeState {
            id: node_pubkey.clone(),
            block_height: node_info.blockheight,
            channels_balance_msat: channels_balance,
            onchain_balance_msat: onchain_balance,
            pending_onchain_balance_msat: pending_onchain_balance,
            utxos,
            max_payable_msat: max_payable,
            max_receivable_msat: max_allowed_to_receive_msats,
            max_single_payment_amount_msat: MAX_PAYMENT_AMOUNT_MSAT,
            max_chan_reserve_msats: channels_balance - min(max_payable, channels_balance),
            connected_peers,
            max_receivable_single_payment_amount_msat: max_receivable_single_channel,
            total_inbound_liquidity_msats,
        };
        let mut htlc_list: Vec<Htlc> = Vec::new();
        for channel in all_channel_models.clone() {
            htlc_list.extend(channel.htlcs);
        }

        let (new_sync_state, payments) = self.pull_transactions(&sync_state, htlc_list).await?;

        Ok(SyncResponse {
            sync_state: serde_json::to_value(new_sync_state)?,
            node_state,
            payments,
            channels: all_channel_models,
        })
    }

    async fn send_pay(&self, bolt11: String, max_hops: u32) -> NodeResult<PaymentResponse> {
        let invoice = parse_invoice(&bolt11)?;
        let last_hop = invoice.routing_hints.first().and_then(|rh| rh.hops.first());
        let mut client: node::ClnClient = self.get_node_client().await?;

        // Valid the invoice network against the config network
        validate_network(invoice.clone(), self.sdk_config.network)?;

        // We first calculate for each channel the max amount to pay (at the receiver)
        let mut max_amount_per_channel = self
            .max_sendable_amount(Some(hex::decode(invoice.payee_pubkey)?), max_hops, last_hop)
            .await?;
        info!("send_pay: routes: {:?}", max_amount_per_channel);

        // Calculate the total amount to pay
        let total_msat: u64 = max_amount_per_channel.iter().map(|m| m.amount_msat).sum();

        // Sort the channels by max amount descending so we can build the route in a way that it
        // drains the largest channels first
        max_amount_per_channel.sort_by_key(|m| Reverse(m.amount_msat));

        let amount_to_pay_msat = match invoice.amount_msat {
            Some(amount) => Ok(amount),
            None => Err(NodeError::generic("Invoice has no amount")),
        }?;

        if amount_to_pay_msat > total_msat {
            return Err(NodeError::RouteNotFound(format!(
                "Amount too high, max amount is {} msat",
                total_msat
            )));
        }

        // This is needed in greenlight for the signer to recognize this invoice.
        client
            .pre_approve_invoice(PreapproveinvoiceRequest {
                bolt11: Some(bolt11.clone()),
            })
            .await?;

        // We need to allocate a part id for each part that we are sending.
        let mut part_id = 1;
        // The total amount we sent. i.e. what the recipient received + fees
        let mut amount_sent_msat = 0;
        // The total amount received by the recipient
        let mut amount_received_msat = 0;
        // Generate a random group_id for the payment
        let group_id = rand::random::<u64>();

        // The algorithm goes over each channel and drains it until the received amount
        // equals to the amount to pay defined in the bolt11 invoice.
        for max in max_amount_per_channel {
            // calculating the incoming amount for the remaining amount to pay.
            let left_to_pay_msat = amount_to_pay_msat - amount_received_msat;
            // Whether we draining the whole channel balance or only what is left to pay
            let to_pay_msat = std::cmp::min(left_to_pay_msat, max.amount_msat);

            // We convert our payment path to an actual route that can be sent to the node.
            // This requires calculating the right fees and cltv delta in each hop.
            let (route, sent_msat) = convert_to_send_pay_route(
                max.path.clone(),
                to_pay_msat,
                invoice.min_final_cltv_expiry_delta,
            );
            info!(
                "send_pay route to pay: {:?}, received_amount = {}",
                route, to_pay_msat
            );
            self.wait_channel_reestablished(&max.path).await?;
            // We send the part using the node API
            client
                .send_pay(SendpayRequest {
                    route,
                    payment_hash: hex::decode(invoice.payment_hash.clone())?,
                    label: None,
                    amount_msat: Some(Amount {
                        msat: amount_to_pay_msat,
                    }),
                    bolt11: Some(bolt11.clone()),
                    payment_secret: Some(invoice.payment_secret.clone()),
                    partid: Some(part_id),
                    localinvreqid: None,
                    groupid: Some(group_id),
                })
                .await?;
            part_id += 1;
            amount_sent_msat += sent_msat;
            amount_received_msat += to_pay_msat;
            if amount_received_msat == amount_to_pay_msat {
                break;
            }
        }

        // Now we wait for the first part to be completed as a way to wait for the payment
        // to complete.
        let response = self
            .with_keep_alive(client.wait_send_pay(WaitsendpayRequest {
                payment_hash: hex::decode(invoice.payment_hash.clone())?,
                partid: Some(1),
                timeout: Some(self.sdk_config.payment_timeout_sec),
                groupid: Some(group_id),
            }))
            .await?
            .into_inner();
        Ok(PaymentResponse {
            payment_time: response.completed_at.unwrap_or(response.created_at as f64) as i64,
            amount_msat: amount_received_msat,
            fee_msat: amount_sent_msat - amount_received_msat,
            payment_hash: invoice.payment_hash,
            payment_preimage: hex::encode(response.payment_preimage.unwrap_or_default()),
        })
    }

    async fn send_payment(
        &self,
        bolt11: String,
        amount_msat: Option<u64>,
        label: Option<String>,
    ) -> NodeResult<Payment> {
        let mut description = None;
        if !bolt11.is_empty() {
            let invoice = parse_invoice(&bolt11)?;
            validate_network(invoice.clone(), self.sdk_config.network)?;
            description = invoice.description;
        }

        let mut client: node::ClnClient = self.get_node_client().await?;
        let request = cln::PayRequest {
            bolt11,
            amount_msat: amount_msat.map(|amt| cln::Amount { msat: amt }),
            maxfeepercent: Some(self.sdk_config.maxfee_percent),
            retry_for: Some(self.sdk_config.payment_timeout_sec),
            label,
            maxdelay: None,
            riskfactor: None,
            localinvreqid: None,
            exclude: vec![],
            maxfee: None,
            description,
            exemptfee: Some(cln::Amount {
                msat: self.sdk_config.exemptfee_msat,
            }),
        };
        let result: cln::PayResponse = self
            .with_keep_alive(client.pay(request))
            .await?
            .into_inner();

        // Before returning from send_payment we need to make sure it is persisted in the backend node.
        // We do so by polling for the payment.
        let payment = Self::fetch_outgoing_payment_with_retry(client, result.payment_hash).await?;
        payment.try_into()
    }

    async fn send_trampoline_payment(
        &self,
        bolt11: String,
        amount_msat: u64,
        label: Option<String>,
        trampoline_node_id: Vec<u8>,
    ) -> NodeResult<Payment> {
        let invoice = parse_invoice(&bolt11)?;
        validate_network(invoice.clone(), self.sdk_config.network)?;
        let label = serde_json::to_string(&PaymentLabel {
            trampoline: true,
            client_label: label,
            unix_nano: SystemTime::now().duration_since(UNIX_EPOCH)?.as_nanos(),
            amount_msat,
        })?;
        let fee_msat =
            (amount_msat.saturating_mul(TRAMPOLINE_FEE_PPM) / 1_000_000) + TRAMPOLINE_BASE_FEE_MSAT;
        let fee_percent = ((fee_msat as f64 / amount_msat as f64) * 100.) as f32;
        debug!("using fee msat {} fee percent {}", fee_msat, fee_percent);
        let mut client = self.get_client().await?;
        let request = TrampolinePayRequest {
            bolt11,
            trampoline_node_id,
            amount_msat,
            label,
            maxdelay: u32::default(),
            description: String::default(),
            maxfeepercent: fee_percent,
        };
        let result = self
            .with_keep_alive(client.trampoline_pay(request))
            .await?
            .into_inner();

        let client = self.get_node_client().await?;

        // Before returning from send_payment we need to make sure it is
        // persisted in the backend node. We do so by polling for the payment.
        // TODO: Ensure this works with trampoline payments
        // NOTE: If this doesn't work with trampoline payments, the sync also
        // needs updating.
        let payment = Self::fetch_outgoing_payment_with_retry(client, result.payment_hash).await?;
        payment.try_into()
    }

    async fn send_spontaneous_payment(
        &self,
        node_id: String,
        amount_msat: u64,
        extra_tlvs: Option<Vec<TlvEntry>>,
        label: Option<String>,
    ) -> NodeResult<Payment> {
        let mut client: node::ClnClient = self.get_node_client().await?;
        let request = cln::KeysendRequest {
            destination: hex::decode(node_id)?,
            amount_msat: Some(cln::Amount { msat: amount_msat }),
            label: label.or(Some(format!(
                "breez-{}",
                SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis()
            ))),
            extratlvs: extra_tlvs.map(|tlvs| cln::TlvStream {
                entries: tlvs
                    .into_iter()
                    .map(|tlv| cln::TlvEntry {
                        r#type: tlv.field_number,
                        value: tlv.value,
                    })
                    .collect(),
            }),
            routehints: None,
            maxfeepercent: Some(self.sdk_config.maxfee_percent),
            exemptfee: None,
            retry_for: Some(self.sdk_config.payment_timeout_sec),
            maxdelay: None,
        };
        let result = self
            .with_keep_alive(client.key_send(request))
            .await?
            .into_inner();

        // Before returning from send_payment we need to make sure it is persisted in the backend node.
        // We do so by polling for the payment.
        let payment = Self::fetch_outgoing_payment_with_retry(client, result.payment_hash).await?;
        payment.try_into()
    }

    async fn node_id(&self) -> NodeResult<String> {
        Ok(hex::encode(self.get_signer().await.node_id()))
    }

    async fn redeem_onchain_funds(
        &self,
        to_address: String,
        sat_per_vbyte: u32,
    ) -> NodeResult<Vec<u8>> {
        let mut client = self.get_node_client().await?;

        let request = cln::WithdrawRequest {
            feerate: Some(cln::Feerate {
                style: Some(cln::feerate::Style::Perkw(sat_per_vbyte * 250)),
            }),
            satoshi: Some(cln::AmountOrAll {
                value: Some(cln::amount_or_all::Value::All(true)),
            }),
            destination: to_address,
            minconf: None,
            utxos: vec![],
        };

        Ok(client.withdraw(request).await?.into_inner().txid)
    }

    async fn prepare_redeem_onchain_funds(
        &self,
        req: PrepareRedeemOnchainFundsRequest,
    ) -> NodeResult<PrepareRedeemOnchainFundsResponse> {
        let funds = self.list_funds().await?;
        let utxos = self.utxos(funds).await?;

        let mut amount_msat: u64 = 0;
        let txins: Vec<TxIn> = utxos
            .iter()
            .map(|utxo| {
                amount_msat += utxo.amount_millisatoshi;
                TxIn {
                    previous_output: OutPoint {
                        txid: Txid::from_slice(&utxo.txid).unwrap(),
                        vout: 0,
                    },
                    script_sig: Script::new(),
                    sequence: Sequence(0),
                    witness: Witness::default(),
                }
            })
            .collect();

        let amount_sat = amount_msat / 1_000;
        let btc_address = Address::from_str(&req.to_address)?;
        let tx_out: Vec<TxOut> = vec![TxOut {
            value: amount_sat,
            script_pubkey: btc_address.payload.script_pubkey(),
        }];
        let tx = Transaction {
            version: 2,
            lock_time: crate::bitcoin::PackedLockTime(0),
            input: txins.clone(),
            output: tx_out,
        };

        let witness_input_size: u64 = 110;
        let tx_weight = tx.strippedsize() as u64 * WITNESS_SCALE_FACTOR as u64
            + witness_input_size * txins.len() as u64;
        let fee: u64 = tx_weight * req.sat_per_vbyte as u64 / WITNESS_SCALE_FACTOR as u64;
        if fee >= amount_sat {
            return Err(NodeError::InsufficientFunds(
                "Insufficient funds to pay fees".to_string(),
            ));
        }

        return Ok(PrepareRedeemOnchainFundsResponse {
            tx_weight,
            tx_fee_sat: fee,
        });
    }

    /// Starts the signer that listens in a loop until the shutdown signal is received
    async fn start_signer(&self, shutdown: mpsc::Receiver<()>) {
        match self.get_signer().await.run_forever(shutdown).await {
            Ok(_) => info!("signer exited gracefully"),
            Err(e) => error!("signer exited with error: {e}"),
        }
    }

    async fn start_keep_alive(&self, mut shutdown: watch::Receiver<()>) {
        info!("keep alive started");
        let mut interval = tokio::time::interval(Duration::from_secs(15));
        interval.set_missed_tick_behavior(MissedTickBehavior::Skip);
        loop {
            tokio::select! {
                  _ = shutdown.changed() => {
                    info!("keep alive exited");
                    break;
                  }
                  _ = interval.tick() => {
                    let inprogress_payments = self.inprogress_payments.load(Ordering::Relaxed);
                    if inprogress_payments == 0 {
                      continue
                    }
                    let client_res = self.get_node_client().await;
                    match client_res {
                      Ok(mut client) => {
                        let res = client.getinfo(cln::GetinfoRequest {}).await;
                        match res {
                          Ok(_) => {
                            info!("keep alive ping sent, in progress payments: {inprogress_payments}");
                          }
                          Err(e) => {
                            error!("keep alive ping failed: {e}");
                          }
                        }
                      }
                      Err(e) => {
                        error!("keep alive ping failed to create client: {e}");
                      }
                    }
                  }
            }
        }
    }

    async fn connect_peer(&self, id: String, addr: String) -> NodeResult<()> {
        let mut client = self.get_node_client().await?;
        let connect_req = cln::ConnectRequest {
            id: format!("{id}@{addr}"),
            host: None,
            port: None,
        };
        client.connect_peer(connect_req).await?;
        Ok(())
    }

    async fn sign_message(&self, message: &str) -> NodeResult<String> {
        let (sig, recovery_id) = self
            .get_signer()
            .await
            .sign_message(message.as_bytes().to_vec())?;
        let mut complete_signature = vec![31 + recovery_id];
        complete_signature.extend_from_slice(&sig);
        Ok(zbase32::encode_full_bytes(&complete_signature))
    }

    async fn check_message(
        &self,
        message: &str,
        pubkey: &str,
        signature: &str,
    ) -> NodeResult<bool> {
        let pk = PublicKey::from_str(pubkey)?;
        Ok(verify(message.as_bytes(), signature, &pk))
    }

    async fn sign_invoice(&self, invoice: RawBolt11Invoice) -> NodeResult<String> {
        let hrp_bytes = invoice.hrp.to_string().as_bytes().to_vec();
        let data_bytes = invoice.data.to_base32();

        // create the message for the signer
        let msg_type: u16 = 8;
        let data_len: u16 = data_bytes.len().try_into()?;
        let mut data_len_bytes = data_len.to_be_bytes().to_vec();
        let mut data_buf = data_bytes.iter().copied().map(u5::to_u8).collect();

        let hrp_len: u16 = hrp_bytes.len().try_into()?;
        let mut hrp_len_bytes = hrp_len.to_be_bytes().to_vec();
        let mut hrp_buf = hrp_bytes.to_vec();

        let mut buf = msg_type.to_be_bytes().to_vec();
        buf.append(&mut data_len_bytes);
        buf.append(&mut data_buf);
        buf.append(&mut hrp_len_bytes);
        buf.append(&mut hrp_buf);
        // Sign the invoice using the signer
        let raw_result = self.get_signer().await.sign_invoice(buf)?;
        info!(
            "recover id: {:?} raw = {:?}",
            raw_result, raw_result[64] as i32
        );
        // contruct the RecoveryId
        let rid = RecoveryId::from_i32(raw_result[64] as i32).expect("recovery ID");
        let sig = &raw_result[0..64];
        let recoverable_sig = RecoverableSignature::from_compact(sig, rid)?;

        let signed_invoice: Result<SignedRawBolt11Invoice> = invoice.sign(|_| Ok(recoverable_sig));
        Ok(signed_invoice?.to_string())
    }

    async fn close_peer_channels(&self, node_id: String) -> NodeResult<Vec<String>> {
        let mut client = self.get_node_client().await?;
        let closed_channels = client
            .list_peer_channels(cln::ListpeerchannelsRequest {
                id: Some(hex::decode(node_id)?),
            })
            .await?
            .into_inner();
        let mut tx_ids = vec![];
        for channel in closed_channels.channels {
            let mut should_close = false;
            if let Some(state) = channel.state {
                match cln::ChannelState::from_i32(state) {
                    Some(cln::ChannelState::Openingd) => should_close = true,
                    Some(cln::ChannelState::ChanneldAwaitingLockin) => should_close = true,
                    Some(cln::ChannelState::ChanneldNormal) => should_close = true,
                    Some(cln::ChannelState::ChanneldShuttingDown) => should_close = true,
                    Some(cln::ChannelState::FundingSpendSeen) => should_close = true,
                    Some(cln::ChannelState::DualopendOpenInit) => should_close = true,
                    Some(cln::ChannelState::DualopendAwaitingLockin) => should_close = true,
                    Some(_) => should_close = false,
                    None => should_close = false,
                }
            }

            if should_close {
                let chan_id = channel.channel_id.ok_or(anyhow!("Empty channel id"))?;
                let response = client
                    .close(cln::CloseRequest {
                        id: hex::encode(chan_id),
                        unilateraltimeout: None,
                        destination: None,
                        fee_negotiation_step: None,
                        wrong_funding: None,
                        force_lease_closed: None,
                        feerange: vec![],
                    })
                    .await;
                match response {
                    Ok(res) => {
                        tx_ids.push(hex::encode(
                            res.into_inner()
                                .txid
                                .ok_or(anyhow!("Empty txid in close response"))?,
                        ));
                    }
                    Err(e) => Err(anyhow!("Empty closing channel: {e}"))?,
                };
            }
        }
        Ok(tx_ids)
    }

    async fn stream_incoming_payments(
        &self,
    ) -> NodeResult<Streaming<gl_client::signer::model::greenlight::IncomingPayment>> {
        let mut client = self.get_client().await?;
        let stream = client
            .stream_incoming(gl_client::signer::model::greenlight::StreamIncomingFilter {})
            .await?
            .into_inner();
        Ok(stream)
    }

    async fn stream_log_messages(
        &self,
    ) -> NodeResult<Streaming<gl_client::signer::model::greenlight::LogEntry>> {
        let mut client = self.get_client().await?;
        let stream = client
            .stream_log(gl_client::signer::model::greenlight::StreamLogRequest {})
            .await?
            .into_inner();
        Ok(stream)
    }

    async fn static_backup(&self) -> NodeResult<Vec<String>> {
        let mut client = self.get_node_client().await?;
        let res = client
            .static_backup(cln::StaticbackupRequest {})
            .await?
            .into_inner();
        let hex_vec: Vec<String> = res.scb.into_iter().map(hex::encode).collect();
        Ok(hex_vec)
    }

    async fn generate_diagnostic_data(&self) -> NodeResult<Value> {
        let all_commands = vec![
            NodeCommand::GetInfo.to_string(),
            NodeCommand::ListPeerChannels.to_string(),
            NodeCommand::ListFunds.to_string(),
            NodeCommand::ListPayments.to_string(),
            NodeCommand::ListInvoices.to_string(),
        ];

        let mut result = Map::new();
        for command in all_commands {
            let command_name = command.clone();
            let res = self
                .execute_command(command)
                .await
                .unwrap_or_else(|e| json!({ "error": e.to_string() }));
            result.insert(command_name, res);
        }
        Ok(Value::Object(result))
    }

    async fn execute_command(&self, command: String) -> NodeResult<Value> {
        let node_cmd =
            NodeCommand::from_str(&command).map_err(|_| anyhow!("Command not found: {command}"))?;
        match node_cmd {
            NodeCommand::ListPeers => {
                let resp = self
                    .get_node_client()
                    .await?
                    .list_peers(cln::ListpeersRequest::default())
                    .await?
                    .into_inner();

                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::ListPeerChannels => {
                let resp = self
                    .get_node_client()
                    .await?
                    .list_peer_channels(cln::ListpeerchannelsRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::ListFunds => {
                let resp = self
                    .get_node_client()
                    .await?
                    .list_funds(cln::ListfundsRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::ListPayments => {
                let resp = self
                    .get_node_client()
                    .await?
                    .list_pays(cln::ListpaysRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::ListInvoices => {
                let resp = self
                    .get_node_client()
                    .await?
                    .list_invoices(cln::ListinvoicesRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::CloseAllChannels => {
                let peers_res = self
                    .get_node_client()
                    .await?
                    .list_peers(cln::ListpeersRequest::default())
                    .await?
                    .into_inner();
                for p in peers_res.peers {
                    self.close_peer_channels(hex::encode(p.id)).await?;
                }

                Ok(Value::String("All channels were closed".to_string()))
            }
            NodeCommand::GetInfo => {
                let resp = self
                    .get_node_client()
                    .await?
                    .getinfo(cln::GetinfoRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
            NodeCommand::Stop => {
                let resp = self
                    .get_node_client()
                    .await?
                    .stop(cln::StopRequest::default())
                    .await?
                    .into_inner();
                Ok(crate::serializer::value::to_value(&resp)?)
            }
        }
    }

    async fn max_sendable_amount(
        &self,
        payee_node_id: Option<Vec<u8>>,
        max_hops: u32,
        last_hop_hint: Option<&RouteHintHop>,
    ) -> NodeResult<Vec<MaxChannelAmount>> {
        let mut client = self.get_node_client().await?;

        let mut peers = HashMap::new();
        client
            .list_peer_channels(cln::ListpeerchannelsRequest::default())
            .await?
            .into_inner()
            .channels
            .into_iter()
            .for_each(|channel| {
                peers
                    .entry(channel.peer_id().to_vec())
                    .or_insert(Vec::new())
                    .push(channel)
            });

        let mut max_channel_amounts = vec![];
        for (peer, channels) in peers {
            let max_amounts_for_peer = self
                .max_sendable_amount_from_peer(
                    peer,
                    channels,
                    payee_node_id.clone(),
                    max_hops,
                    last_hop_hint,
                )
                .await?;
            max_channel_amounts.extend_from_slice(max_amounts_for_peer.as_slice());
        }
        Ok(max_channel_amounts)
    }

    async fn derive_bip32_key(&self, path: Vec<ChildNumber>) -> NodeResult<ExtendedPrivKey> {
        Self::derive_bip32_key(self.sdk_config.network, &self.get_signer().await, path)
    }

    async fn legacy_derive_bip32_key(&self, path: Vec<ChildNumber>) -> NodeResult<ExtendedPrivKey> {
        Self::legacy_derive_bip32_key(self.sdk_config.network, &self.get_signer().await, path)
    }

    async fn stream_custom_messages(
        &self,
    ) -> NodeResult<Pin<Box<dyn Stream<Item = Result<CustomMessage>> + Send>>> {
        let stream = {
            let mut client = match self.get_client().await {
                Ok(c) => Ok(c),
                Err(e) => Err(anyhow!("{}", e)),
            }?;

            match client
                .stream_custommsg(gl_client::signer::model::greenlight::StreamCustommsgRequest {})
                .await
            {
                Ok(s) => Ok(s),
                Err(e) => Err(anyhow!("{}", e)),
            }?
            .into_inner()
        };

        Ok(Box::pin(stream.filter_map(|msg| {
            let msg = match msg {
                Ok(msg) => msg,
                Err(e) => return Some(Err(anyhow!("failed to receive message: {}", e))),
            };

            if msg.payload.len() < 2 {
                debug!(
                    "received too short custom message payload: {:?}",
                    &msg.payload
                );
                return None;
            }

            let msg_type = u16::from_be_bytes([msg.payload[0], msg.payload[1]]);

            Some(Ok(CustomMessage {
                peer_id: msg.peer_id,
                message_type: msg_type,
                payload: msg.payload[2..].to_vec(),
            }))
        })))
    }

    async fn send_custom_message(&self, message: CustomMessage) -> NodeResult<()> {
        let mut msg = message.message_type.to_be_bytes().to_vec();
        msg.extend(message.payload);
        let resp = self
            .get_node_client()
            .await?
            .send_custom_msg(cln::SendcustommsgRequest {
                msg,
                node_id: message.peer_id,
            })
            .await?
            .into_inner();
        debug!("send_custom_message returned status {:?}", resp.status);
        Ok(())
    }

    // Gets the routing hints related to all private channels that the node has
    async fn get_routing_hints(
        &self,
        lsp_info: &LspInformation,
    ) -> NodeResult<(Vec<RouteHint>, bool)> {
        let mut node_client = self.get_node_client().await?;

        let open_peer_channels = self.get_open_peer_channels_pb().await?;
        let (open_peer_channels_private, open_peer_channels_public): (
            HashMap<Vec<u8>, ListpeerchannelsChannels>,
            HashMap<Vec<u8>, ListpeerchannelsChannels>,
        ) = open_peer_channels
            .into_iter()
            .partition(|(_, c)| c.private.unwrap_or_default());
        let has_public_channel = !open_peer_channels_public.is_empty();

        let mut hints: Vec<RouteHint> = vec![];

        // Get channels where our node is the destination
        let pubkey = self
            .persister
            .get_node_state()?
            .map(|n| n.id)
            .ok_or(NodeError::generic("Node info not found"))?;
        let channels: HashMap<Vec<u8>, cln::ListchannelsChannels> = node_client
            .list_channels(cln::ListchannelsRequest {
                destination: Some(hex::decode(pubkey)?),
                ..Default::default()
            })
            .await?
            .into_inner()
            .channels
            .into_iter()
            .map(|c| (c.source.clone(), c))
            .collect();

        // Create a routing hint from each private channel.
        for (peer_id, peer_channel) in open_peer_channels_private {
            let peer_id_str = hex::encode(&peer_id);
            let optional_channel_id = peer_channel
                .alias
                .and_then(|a| a.remote)
                .or(peer_channel.short_channel_id);

            if let Some(channel_id) = optional_channel_id {
                // The remote fee policy
                let maybe_policy = match channels.get(&peer_id) {
                    Some(channel) => Some((
                        channel.base_fee_millisatoshi,
                        channel.fee_per_millionth,
                        channel.delay,
                    )),
                    None if peer_id_str == lsp_info.pubkey => Some((
                        lsp_info.base_fee_msat as u32,
                        (lsp_info.fee_rate * 1000000.0) as u32,
                        lsp_info.time_lock_delta,
                    )),
                    _ => None,
                };
                match maybe_policy {
                    Some((fees_base_msat, fees_proportional_millionths, cltv_delta)) => {
                        debug!(
                            "For peer {}: remote base {} proportional {} cltv_delta {}",
                            peer_id_str, fees_base_msat, fees_proportional_millionths, cltv_delta,
                        );
                        let hint = RouteHint {
                            hops: vec![RouteHintHop {
                                src_node_id: peer_id_str,
                                short_channel_id: channel_id,
                                fees_base_msat,
                                fees_proportional_millionths,
                                cltv_expiry_delta: cltv_delta as u64,
                                htlc_minimum_msat: Some(
                                    peer_channel
                                        .minimum_htlc_in_msat
                                        .clone()
                                        .unwrap_or_default()
                                        .msat,
                                ),
                                htlc_maximum_msat: None,
                            }],
                        };
                        info!("Generating hint hop as routing hint: {:?}", hint);
                        hints.push(hint);
                    }
                    _ => debug!("No source channel found for peer: {:?}", peer_id_str),
                };
            }
        }
        Ok((hints, has_public_channel))
    }

    async fn get_open_peers(&self) -> NodeResult<HashSet<Vec<u8>>> {
        let open_peer_channels = self.get_open_peer_channels_pb().await?;
        let open_peers: HashSet<Vec<u8>> = open_peer_channels.into_keys().collect();
        Ok(open_peers)
    }
}

#[derive(Clone, PartialEq, Eq, Debug, EnumString, Display, Deserialize, Serialize)]
enum NodeCommand {
    /// Closes all channels of all peers.
    #[strum(serialize = "closeallchannels")]
    CloseAllChannels,

    /// See <https://docs.corelightning.org/reference/lightning-getinfo>
    #[strum(serialize = "getinfo")]
    GetInfo,

    /// See <https://docs.corelightning.org/reference/lightning-listfunds>
    #[strum(serialize = "listfunds")]
    ListFunds,

    /// See <https://docs.corelightning.org/reference/lightning-listinvoices>
    #[strum(serialize = "listinvoices")]
    ListInvoices,

    /// See <https://docs.corelightning.org/reference/lightning-listpays>
    #[strum(serialize = "listpayments")]
    ListPayments,

    /// See <https://docs.corelightning.org/reference/lightning-listpeers>
    #[strum(serialize = "listpeers")]
    ListPeers,

    /// See <https://docs.corelightning.org/reference/lightning-listpeerchannels>
    #[strum(serialize = "listpeerchannels")]
    ListPeerChannels,

    /// Stops the node.
    ///
    /// Note that this command will return an error, as the node is stopped before it can reply.
    ///
    /// See <https://docs.corelightning.org/reference/lightning-stop>
    #[strum(serialize = "stop")]
    Stop,
}

struct SendPayAgg {
    state: u8,
    created_at: u64,
    payment_hash: Vec<u8>,
    bolt11: Option<String>,
    destination: Option<Vec<u8>>,
    label: Option<String>,
    description: Option<String>,
    preimage: Option<Vec<u8>>,
    amount_sent: u64,
    amount: Option<u64>,
    num_nonfailed_parts: u64,
}

fn update_payment_expirations(
    payments: Vec<Payment>,
    htlc_list: Vec<Htlc>,
) -> NodeResult<Vec<Payment>> {
    if htlc_list.is_empty() {
        return Ok(payments);
    }

    let mut payments_res: Vec<Payment> = Vec::new();
    for mut payment in payments {
        if payment.status == PaymentStatus::Pending {
            let new_data = payment.clone().details;
            if let PaymentDetails::Ln { data } = new_data {
                for htlc in &htlc_list {
                    let payment_hash = hex::encode(htlc.clone().payment_hash);
                    if payment_hash == data.payment_hash
                        && data.pending_expiration_block < Some(htlc.expiry)
                    {
                        payment.details.add_pending_expiration_block(htlc.clone())
                    }
                }
            }
        }
        payments_res.push(payment);
    }
    info!("pending htlc payments {:?}", payments_res);
    Ok(payments_res)
}

impl TryFrom<ListsendpaysPayments> for SendPay {
    type Error = NodeError;

    fn try_from(value: ListsendpaysPayments) -> std::result::Result<Self, Self::Error> {
        Ok(SendPay {
            created_index: value
                .created_index
                .ok_or(NodeError::generic("missing created index"))?,
            updated_index: value.updated_index,
            groupid: value.groupid,
            partid: value.partid,
            payment_hash: value.payment_hash,
            status: value.status.try_into()?,
            amount_msat: value.amount_msat.map(|a| a.msat),
            destination: value.destination,
            created_at: value.created_at,
            amount_sent_msat: value.amount_sent_msat.map(|a| a.msat),
            label: value.label,
            bolt11: value.bolt11,
            description: value.description,
            bolt12: value.bolt12,
            payment_preimage: value.payment_preimage,
            erroronion: value.erroronion,
        })
    }
}

impl TryFrom<i32> for SendPayStatus {
    type Error = NodeError;

    fn try_from(value: i32) -> std::result::Result<Self, Self::Error> {
        match value {
            0 => Ok(Self::Pending),
            1 => Ok(Self::Failed),
            2 => Ok(Self::Complete),
            _ => Err(NodeError::generic("invalid send_pay status")),
        }
    }
}

impl TryFrom<SendPayAgg> for Payment {
    type Error = NodeError;

    fn try_from(value: SendPayAgg) -> std::result::Result<Self, Self::Error> {
        let ln_invoice = value
            .bolt11
            .as_ref()
            .ok_or(InvoiceError::generic("No bolt11 invoice"))
            .and_then(|b| parse_invoice(b));

        // For trampoline payments the amount_msat doesn't match the actual
        // amount. If it's a trampoline payment, take the amount from the label.
        let (payment_amount, client_label) =
            serde_json::from_str::<PaymentLabel>(&value.label.clone().unwrap_or_default())
                .ok()
                .and_then(|label| {
                    label
                        .trampoline
                        .then_some((label.amount_msat, label.client_label))
                })
                .unwrap_or((value.amount.unwrap_or_default(), value.label));
        let fee_msat = value.amount_sent.saturating_sub(payment_amount);
        let status = if value.state & PAYMENT_STATE_COMPLETE > 0 {
            PaymentStatus::Complete
        } else if value.state & PAYMENT_STATE_PENDING > 0 {
            PaymentStatus::Pending
        } else {
            PaymentStatus::Failed
        };
        Ok(Self {
            id: hex::encode(&value.payment_hash),
            payment_type: PaymentType::Sent,
            payment_time: value.created_at as i64,
            amount_msat: match status {
                PaymentStatus::Complete => payment_amount,
                _ => ln_invoice
                    .as_ref()
                    .map_or(0, |i| i.amount_msat.unwrap_or_default()),
            },
            fee_msat,
            status,
            error: None,
            description: ln_invoice
                .as_ref()
                .map(|i| i.description.clone())
                .unwrap_or_default(),
            details: PaymentDetails::Ln {
                data: LnPaymentDetails {
                    payment_hash: hex::encode(&value.payment_hash),
                    label: client_label.unwrap_or_default(),
                    destination_pubkey: ln_invoice.map_or(
                        value.destination.map(hex::encode).unwrap_or_default(),
                        |i| i.payee_pubkey,
                    ),
                    payment_preimage: value.preimage.map(hex::encode).unwrap_or_default(),
                    keysend: value.bolt11.is_none(),
                    bolt11: value.bolt11.unwrap_or_default(),
                    open_channel_bolt11: None,
                    lnurl_success_action: None,
                    lnurl_pay_domain: None,
                    lnurl_pay_comment: None,
                    ln_address: None,
                    lnurl_metadata: None,
                    lnurl_withdraw_endpoint: None,
                    swap_info: None,
                    reverse_swap_info: None,
                    pending_expiration_block: None,
                },
            },
            metadata: None,
        })
    }
}

//pub(crate) fn offchain_payment_to_transaction
impl TryFrom<OffChainPayment> for Payment {
    type Error = NodeError;

    fn try_from(p: OffChainPayment) -> std::result::Result<Self, Self::Error> {
        let ln_invoice = parse_invoice(&p.bolt11)?;
        Ok(Payment {
            id: hex::encode(p.payment_hash.clone()),
            payment_type: PaymentType::Received,
            payment_time: SystemTime::now().duration_since(UNIX_EPOCH)?.as_secs() as i64,
            amount_msat: amount_to_msat(&p.amount.unwrap_or_default()),
            fee_msat: 0,
            status: PaymentStatus::Complete,
            error: None,
            description: ln_invoice.description,
            details: PaymentDetails::Ln {
                data: LnPaymentDetails {
                    payment_hash: hex::encode(p.payment_hash),
                    label: p.label,
                    destination_pubkey: ln_invoice.payee_pubkey,
                    payment_preimage: hex::encode(p.preimage),
                    keysend: false,
                    bolt11: p.bolt11,
                    lnurl_success_action: None, // For received payments, this is None
                    lnurl_pay_domain: None,     // For received payments, this is None
                    lnurl_pay_comment: None,    // For received payments, this is None
                    lnurl_metadata: None,       // For received payments, this is None
                    ln_address: None,
                    lnurl_withdraw_endpoint: None,
                    swap_info: None,
                    reverse_swap_info: None,
                    pending_expiration_block: None,
                    open_channel_bolt11: None,
                },
            },
            metadata: None,
        })
    }
}

impl From<PayStatus> for PaymentStatus {
    fn from(value: PayStatus) -> Self {
        match value {
            PayStatus::Pending => PaymentStatus::Pending,
            PayStatus::Complete => PaymentStatus::Complete,
            PayStatus::Failed => PaymentStatus::Failed,
        }
    }
}

/// Construct a lightning transaction from an invoice
impl TryFrom<cln::ListinvoicesInvoices> for Payment {
    type Error = NodeError;

    fn try_from(invoice: cln::ListinvoicesInvoices) -> std::result::Result<Self, Self::Error> {
        let ln_invoice = invoice
            .bolt11
            .as_ref()
            .ok_or(InvoiceError::generic("No bolt11 invoice"))
            .and_then(|b| parse_invoice(b))?;
        Ok(Payment {
            id: hex::encode(invoice.payment_hash.clone()),
            payment_type: PaymentType::Received,
            payment_time: invoice.paid_at.map(|i| i as i64).unwrap_or_default(),
            amount_msat: invoice
                .amount_received_msat
                .or(invoice.amount_msat)
                .map(|a| a.msat)
                .unwrap_or_default(),
            fee_msat: 0,
            status: PaymentStatus::Complete,
            error: None,
            description: ln_invoice.description,
            details: PaymentDetails::Ln {
                data: LnPaymentDetails {
                    payment_hash: hex::encode(invoice.payment_hash),
                    label: invoice.label,
                    destination_pubkey: ln_invoice.payee_pubkey,
                    payment_preimage: invoice
                        .payment_preimage
                        .map(hex::encode)
                        .unwrap_or_default(),
                    keysend: false,
                    bolt11: invoice.bolt11.unwrap_or_default(),
                    lnurl_success_action: None, // For received payments, this is None
                    lnurl_pay_domain: None,     // For received payments, this is None
                    lnurl_pay_comment: None,    // For received payments, this is None
                    lnurl_metadata: None,       // For received payments, this is None
                    ln_address: None,
                    lnurl_withdraw_endpoint: None,
                    swap_info: None,
                    reverse_swap_info: None,
                    pending_expiration_block: None,
                    open_channel_bolt11: None,
                },
            },
            metadata: None,
        })
    }
}

impl From<ListpaysPaysStatus> for PaymentStatus {
    fn from(value: ListpaysPaysStatus) -> Self {
        match value {
            ListpaysPaysStatus::Pending => PaymentStatus::Pending,
            ListpaysPaysStatus::Complete => PaymentStatus::Complete,
            ListpaysPaysStatus::Failed => PaymentStatus::Failed,
        }
    }
}

impl TryFrom<cln::ListpaysPays> for Payment {
    type Error = NodeError;

    fn try_from(payment: cln::ListpaysPays) -> NodeResult<Self, Self::Error> {
        let ln_invoice = payment
            .bolt11
            .as_ref()
            .ok_or(InvoiceError::generic("No bolt11 invoice"))
            .and_then(|b| parse_invoice(b));
        let payment_amount_sent = payment
            .amount_sent_msat
            .clone()
            .map(|a| a.msat)
            .unwrap_or_default();

        // For trampoline payments the amount_msat doesn't match the actual
        // amount. If it's a trampoline payment, take the amount from the label.
        let (payment_amount, client_label) = serde_json::from_str::<PaymentLabel>(payment.label())
            .ok()
            .and_then(|label| {
                label
                    .trampoline
                    .then_some((label.amount_msat, label.client_label))
            })
            .unwrap_or((
                payment
                    .amount_msat
                    .clone()
                    .map(|a| a.msat)
                    .unwrap_or_default(),
                payment.label.clone(),
            ));
        let status = payment.status().into();

        Ok(Payment {
            id: hex::encode(payment.payment_hash.clone()),
            payment_type: PaymentType::Sent,
            payment_time: payment.completed_at.unwrap_or(payment.created_at) as i64,
            amount_msat: match status {
                PaymentStatus::Complete => payment_amount,
                _ => ln_invoice
                    .as_ref()
                    .map_or(0, |i| i.amount_msat.unwrap_or_default()),
            },
            fee_msat: payment_amount_sent.saturating_sub(payment_amount),
            status,
            error: None,
            description: ln_invoice
                .as_ref()
                .map(|i| i.description.clone())
                .unwrap_or_default(),
            details: PaymentDetails::Ln {
                data: LnPaymentDetails {
                    payment_hash: hex::encode(payment.payment_hash),
                    label: client_label.unwrap_or_default(),
                    destination_pubkey: ln_invoice.map_or(
                        payment.destination.map(hex::encode).unwrap_or_default(),
                        |i| i.payee_pubkey,
                    ),
                    payment_preimage: payment.preimage.map(hex::encode).unwrap_or_default(),
                    keysend: payment.bolt11.is_none(),
                    bolt11: payment.bolt11.unwrap_or_default(),
                    lnurl_success_action: None,
                    lnurl_pay_domain: None,
                    lnurl_pay_comment: None,
                    lnurl_metadata: None,
                    ln_address: None,
                    lnurl_withdraw_endpoint: None,
                    swap_info: None,
                    reverse_swap_info: None,
                    pending_expiration_block: None,
                    open_channel_bolt11: None,
                },
            },
            metadata: None,
        })
    }
}

impl TryFrom<cln::PayResponse> for PaymentResponse {
    type Error = NodeError;

    fn try_from(payment: cln::PayResponse) -> std::result::Result<Self, Self::Error> {
        let payment_amount = payment.amount_msat.unwrap_or_default().msat;
        let payment_amount_sent = payment.amount_sent_msat.unwrap_or_default().msat;

        Ok(PaymentResponse {
            payment_time: payment.created_at as i64,
            amount_msat: payment_amount,
            fee_msat: payment_amount_sent - payment_amount,
            payment_hash: hex::encode(payment.payment_hash),
            payment_preimage: hex::encode(payment.payment_preimage),
        })
    }
}

impl TryFrom<cln::KeysendResponse> for PaymentResponse {
    type Error = NodeError;

    fn try_from(payment: cln::KeysendResponse) -> std::result::Result<Self, Self::Error> {
        let payment_amount = payment.amount_msat.unwrap_or_default().msat;
        let payment_amount_sent = payment.amount_sent_msat.unwrap_or_default().msat;

        Ok(PaymentResponse {
            payment_time: payment.created_at as i64,
            amount_msat: payment_amount,
            fee_msat: payment_amount_sent - payment_amount,
            payment_hash: hex::encode(payment.payment_hash),
            payment_preimage: hex::encode(payment.payment_preimage),
        })
    }
}

fn amount_to_msat(amount: &gl_client::pb::greenlight::Amount) -> u64 {
    match amount.unit {
        Some(amount::Unit::Millisatoshi(val)) => val,
        Some(amount::Unit::Satoshi(val)) => val * 1000,
        Some(amount::Unit::Bitcoin(val)) => val * 100000000,
        Some(_) => 0,
        None => 0,
    }
}

/// Conversion for an open channel
impl From<cln::ListpeerchannelsChannels> for Channel {
    fn from(c: cln::ListpeerchannelsChannels) -> Self {
        let state = match c.state() {
            Openingd | ChanneldAwaitingLockin | DualopendOpenInit | DualopendAwaitingLockin => {
                ChannelState::PendingOpen
            }
            ChanneldNormal => ChannelState::Opened,
            _ => ChannelState::PendingClose,
        };

        let (alias_remote, alias_local) = match c.alias {
            Some(a) => (a.remote, a.local),
            None => (None, None),
        };

        Channel {
            short_channel_id: c.short_channel_id,
            state,
            funding_txid: c.funding_txid.map(hex::encode).unwrap_or_default(),
            spendable_msat: c.spendable_msat.unwrap_or_default().msat,
            local_balance_msat: c.to_us_msat.unwrap_or_default().msat,
            receivable_msat: c.receivable_msat.unwrap_or_default().msat,
            closed_at: None,
            funding_outnum: c.funding_outnum,
            alias_remote,
            alias_local,
            closing_txid: None,
            htlcs: c
                .htlcs
                .into_iter()
                .map(|c| Htlc::from(c.expiry.unwrap_or(0), c.payment_hash.unwrap_or_default()))
                .collect(),
        }
    }
}

fn convert_to_send_pay_route(
    route: PaymentPath,
    to_pay_msat: u64,
    final_cltv_delta: u64,
) -> (Vec<SendpayRoute>, u64) {
    let mut sendpay_route = vec![];
    let mut to_forward = to_pay_msat;
    let mut cltv_delay = 0;
    let hops_arr = route.edges.as_slice();

    let reverse_hops: Vec<&PaymentPathEdge> = hops_arr.iter().rev().collect();

    // Iterating over the path in a reverse order so we can calculate
    // the cltv deltas and fees.
    for (reverse_index, hop) in reverse_hops.iter().enumerate() {
        //let hop = h.clone();
        (to_forward, cltv_delay) = match reverse_index == 0 {
            // last hop should not take any fees and should use the final_cltv_delta.
            true => (to_forward, final_cltv_delta),

            // all other hops are forwarding therefore should take fees and increase the cltv delta.
            false => (
                reverse_hops[reverse_index - 1].amount_from_forward(to_forward),
                cltv_delay + reverse_hops[reverse_index - 1].channel_delay,
            ),
        };

        sendpay_route.insert(
            0,
            SendpayRoute {
                amount_msat: Some(gl_client::pb::cln::Amount { msat: to_forward }),
                id: hop.node_id.clone(),
                delay: cltv_delay as u32,
                channel: hop.short_channel_id.clone(),
            },
        );
    }

    (sendpay_route, to_forward)
}

impl TryFrom<ListclosedchannelsClosedchannels> for Channel {
    type Error = NodeError;

    fn try_from(
        c: cln::ListclosedchannelsClosedchannels,
    ) -> std::result::Result<Self, Self::Error> {
        let (alias_remote, alias_local) = match c.alias {
            Some(a) => (a.remote, a.local),
            None => (None, None),
        };

        // To keep the conversion simple and fast, some closing-related fields (closed_at, closing_txid)
        // are left empty here in the conversion, but populated later (via chain service lookup, or DB lookup)
        let local_balance_msat = c
            .final_to_us_msat
            .ok_or(anyhow!("final_to_us_msat is missing"))?
            .msat;
        Ok(Channel {
            short_channel_id: c.short_channel_id,
            state: ChannelState::Closed,
            funding_txid: hex::encode(c.funding_txid),
            spendable_msat: local_balance_msat,
            local_balance_msat,
            receivable_msat: 0,
            closed_at: None,
            funding_outnum: Some(c.funding_outnum),
            alias_remote,
            alias_local,
            closing_txid: None,
            htlcs: Vec::new(),
        })
    }
}

#[cfg(test)]
mod tests {
    use anyhow::Result;
    use gl_client::pb::cln::listpeerchannels_channels::{
        ListpeerchannelsChannelsState, ListpeerchannelsChannelsState::*,
    };
    use gl_client::pb::cln::Amount;
    use gl_client::pb::{self, cln};

    use crate::greenlight::node_api::convert_to_send_pay_route;
    use crate::{models, PaymentPath, PaymentPathEdge};

    #[test]
    fn test_convert_route() -> Result<()> {
        let path = PaymentPath {
            edges: vec![
                PaymentPathEdge {
                    node_id: vec![1],
                    short_channel_id: "807189x2048x0".into(),
                    channel_delay: 34,
                    base_fee_msat: 1000,
                    fee_per_millionth: 10,
                },
                PaymentPathEdge {
                    node_id: vec![2],
                    short_channel_id: "811871x2726x1".into(),
                    channel_delay: 34,
                    base_fee_msat: 0,
                    fee_per_millionth: 0,
                },
                PaymentPathEdge {
                    node_id: vec![3],
                    short_channel_id: "16000000x0x18087".into(),
                    channel_delay: 40,
                    base_fee_msat: 1000,
                    fee_per_millionth: 1,
                },
            ],
        };

        let (r, sent) = convert_to_send_pay_route(path, 50000000, 144);
        assert_eq!(
            r,
            vec![
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50001050 }),
                    id: vec![1],
                    delay: 218,
                    channel: "807189x2048x0".into(),
                },
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50001050 }),
                    id: vec![2],
                    delay: 184,
                    channel: "811871x2726x1".into(),
                },
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50000000 }),
                    id: vec![3],
                    delay: 144,
                    channel: "16000000x0x18087".into(),
                }
            ]
        );
        assert_eq!(sent, 50001050);

        let path = PaymentPath {
            edges: vec![
                PaymentPathEdge {
                    node_id: vec![1],
                    short_channel_id: "807189x2048x0".into(),
                    channel_delay: 34,
                    base_fee_msat: 1000,
                    fee_per_millionth: 10,
                },
                PaymentPathEdge {
                    node_id: vec![2],
                    short_channel_id: "811871x2726x1".into(),
                    channel_delay: 34,
                    base_fee_msat: 0,
                    fee_per_millionth: 0,
                },
                PaymentPathEdge {
                    node_id: vec![3],
                    short_channel_id: "16000000x0x18087".into(),
                    channel_delay: 40,
                    base_fee_msat: 0,
                    fee_per_millionth: 2000,
                },
            ],
        };
        let (r, sent) = convert_to_send_pay_route(path, 50000000, 144);
        assert_eq!(
            r,
            vec![
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50100000 }),
                    id: vec![1],
                    delay: 218,
                    channel: "807189x2048x0".into(),
                },
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50100000 }),
                    id: vec![2],
                    delay: 184,
                    channel: "811871x2726x1".into(),
                },
                pb::cln::SendpayRoute {
                    amount_msat: Some(gl_client::pb::cln::Amount { msat: 50000000 }),
                    id: vec![3],
                    delay: 144,
                    channel: "16000000x0x18087".into(),
                }
            ]
        );
        assert_eq!(sent, 50100000);

        Ok(())
    }

    #[test]
    fn test_channel_states() -> Result<()> {
        for s in &[Openingd, ChanneldAwaitingLockin] {
            let c: models::Channel = cln_channel(s).into();
            assert_eq!(c.state, models::ChannelState::PendingOpen);
        }

        let s = ChanneldNormal;
        let c: models::Channel = cln_channel(&s).into();
        assert_eq!(c.state, models::ChannelState::Opened);

        for s in &[
            ChanneldShuttingDown,
            ClosingdSigexchange,
            ClosingdComplete,
            AwaitingUnilateral,
            FundingSpendSeen,
        ] {
            let c: models::Channel = cln_channel(s).into();
            assert_eq!(c.state, models::ChannelState::PendingClose);
        }

        let c: models::Channel = cln_channel(&Onchain).into();
        assert_eq!(c.state, models::ChannelState::PendingClose);

        Ok(())
    }

    fn cln_channel(state: &ListpeerchannelsChannelsState) -> cln::ListpeerchannelsChannels {
        cln::ListpeerchannelsChannels {
            state: Some((*state).into()),
            scratch_txid: None,
            feerate: None,
            owner: None,
            short_channel_id: None,
            channel_id: None,
            funding_txid: None,
            funding_outnum: None,
            initial_feerate: None,
            last_feerate: None,
            next_feerate: None,
            next_fee_step: None,
            inflight: vec![],
            close_to: None,
            private: Some(true),
            opener: Some(0),
            closer: None,
            funding: None,
            to_us_msat: None,
            min_to_us_msat: None,
            max_to_us_msat: None,
            total_msat: Some(Amount { msat: 1_000 }),
            fee_base_msat: None,
            fee_proportional_millionths: None,
            dust_limit_msat: Some(Amount { msat: 10 }),
            max_total_htlc_in_msat: None,
            their_reserve_msat: None,
            our_reserve_msat: None,
            spendable_msat: Some(Amount { msat: 20_000 }),
            receivable_msat: Some(Amount { msat: 960_000 }),
            minimum_htlc_in_msat: None,
            minimum_htlc_out_msat: None,
            maximum_htlc_out_msat: None,
            their_to_self_delay: Some(144),
            our_to_self_delay: Some(144),
            max_accepted_htlcs: None,
            alias: None,
            status: vec![],
            in_payments_offered: None,
            in_offered_msat: None,
            in_payments_fulfilled: None,
            in_fulfilled_msat: None,
            out_payments_offered: None,
            out_offered_msat: None,
            out_payments_fulfilled: None,
            out_fulfilled_msat: None,
            htlcs: vec![],
            close_to_addr: None,
            peer_id: None,
            peer_connected: None,
            updates: None,
            ignore_fee_limits: None,
            lost_state: None,
            last_stable_connection: None,
        }
    }
}