breez_sdk_liquid/recover/
model.rs

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use std::collections::HashMap;
use std::str::FromStr;

use lwk_wollet::elements_miniscript::slip77::MasterBlindingKey;
use lwk_wollet::WalletTx;
use sdk_common::utils::Arc;

use crate::chain::liquid::LiquidChainService;
use crate::prelude::*;
use crate::swapper::Swapper;

/// A map of all our known LWK onchain txs, indexed by tx ID. Essentially our own cache of the LWK txs.
pub(crate) struct TxMap {
    pub(crate) outgoing_tx_map: HashMap<elements::Txid, WalletTx>,
    pub(crate) incoming_tx_map: HashMap<elements::Txid, WalletTx>,
}
impl TxMap {
    pub(crate) fn from_raw_tx_map(raw_tx_map: HashMap<elements::Txid, WalletTx>) -> Self {
        let (outgoing_tx_map, incoming_tx_map): (
            HashMap<elements::Txid, WalletTx>,
            HashMap<elements::Txid, WalletTx>,
        ) = raw_tx_map
            .into_iter()
            .partition(|(_, tx)| tx.balance.values().sum::<i64>() < 0);

        Self {
            outgoing_tx_map,
            incoming_tx_map,
        }
    }
}

/// Swap list containing all swap data indexed by swap ID
#[derive(Default)]
pub(crate) struct SwapsList {
    // Single map for all swap types indexed by swap ID
    pub(crate) swaps_by_id: HashMap<String, Swap>,
}

impl TryFrom<Vec<Swap>> for SwapsList {
    type Error = anyhow::Error;

    fn try_from(swaps: Vec<Swap>) -> std::result::Result<Self, Self::Error> {
        let mut swaps_list = Self::default();

        for swap in swaps.into_iter() {
            let swap_id = swap.id();
            swaps_list.swaps_by_id.insert(swap_id, swap);
        }

        Ok(swaps_list)
    }
}

impl SwapsList {
    pub(crate) fn get_swap_lbtc_scripts(&self) -> Vec<LBtcScript> {
        let mut swap_scripts = Vec::new();

        for swap in self.swaps_by_id.values() {
            match swap {
                Swap::Send(send_swap) => {
                    if let Ok(script) = send_swap.get_swap_script() {
                        if let Some(funding_addr) = script.funding_addrs {
                            swap_scripts.push(funding_addr.script_pubkey());
                        }
                    }
                }
                Swap::Receive(receive_swap) => {
                    // Add claim script
                    if let Ok(script) = receive_swap.get_swap_script() {
                        if let Some(funding_addr) = script.funding_addrs {
                            swap_scripts.push(funding_addr.script_pubkey());
                        }
                    }

                    // Add MRH script if available
                    if let Ok(mrh_address) = elements::Address::from_str(&receive_swap.mrh_address)
                    {
                        swap_scripts.push(mrh_address.script_pubkey());
                    }
                }
                Swap::Chain(chain_swap) => {
                    match chain_swap.direction {
                        Direction::Outgoing => {
                            // For outgoing chain swaps, add lockup script
                            _ = chain_swap
                                .get_lockup_swap_script()
                                .and_then(|lockup_script| {
                                    Ok(lockup_script.as_liquid_script()?.funding_addrs.map(
                                        |funding_addr| {
                                            swap_scripts.push(funding_addr.script_pubkey())
                                        },
                                    ))
                                })
                        }
                        Direction::Incoming => {
                            // For incoming chain swaps, add claim script
                            _ = chain_swap.get_claim_swap_script().and_then(|claim_script| {
                                Ok(claim_script.as_liquid_script()?.funding_addrs.map(
                                    |funding_addr| swap_scripts.push(funding_addr.script_pubkey()),
                                ))
                            })
                        }
                    }
                }
            }
        }

        swap_scripts
    }

    pub(crate) fn get_swap_btc_scripts(&self) -> Vec<BtcScript> {
        let mut swap_scripts = Vec::new();

        for swap in self.swaps_by_id.values() {
            if let Swap::Chain(chain_swap) = swap {
                match chain_swap.direction {
                    Direction::Outgoing => {
                        // For outgoing chain swaps, add claim script (BTC)
                        _ = chain_swap.get_claim_swap_script().and_then(|claim_script| {
                            Ok(claim_script.as_bitcoin_script()?.funding_addrs.map(
                                |funding_addr| swap_scripts.push(funding_addr.script_pubkey()),
                            ))
                        })
                    }
                    Direction::Incoming => {
                        // For incoming chain swaps, add lockup script (BTC)
                        _ = chain_swap
                            .get_lockup_swap_script()
                            .and_then(|lockup_script| {
                                Ok(lockup_script.as_bitcoin_script()?.funding_addrs.map(
                                    |funding_addr| swap_scripts.push(funding_addr.script_pubkey()),
                                ))
                            })
                    }
                }
            }
        }

        swap_scripts
    }
}

pub(crate) struct RecoveryContext {
    pub(crate) lbtc_script_to_history_map: HashMap<LBtcScript, Vec<LBtcHistory>>,
    pub(crate) btc_script_to_history_map: HashMap<BtcScript, Vec<BtcHistory>>,
    pub(crate) btc_script_to_txs_map: HashMap<BtcScript, Vec<bitcoin::Transaction>>,
    pub(crate) btc_script_to_balance_map: HashMap<BtcScript, BtcScriptBalance>,
    pub(crate) liquid_chain_service: Arc<dyn LiquidChainService>,
    pub(crate) swapper: Arc<dyn Swapper>,
    pub(crate) tx_map: TxMap,
    pub(crate) master_blinding_key: MasterBlindingKey,
    pub(crate) liquid_tip_height: u32,
    pub(crate) bitcoin_tip_height: u32,
}