synkrokonn-dev/dist/core/HTLCHandler.js

Plugin-based cross-chain orchestration middleware for Web3 enterprise automation.

import crypto from 'crypto';
export class HTLCHandler {
    constructor() {
        this.htlcStore = {};
    }
    createHTLC(sender, receiver, secret, timelock) {
        const hashlock = crypto.createHash('sha256').update(secret).digest('hex');
        const htlcId = crypto.randomUUID();
        this.htlcStore[htlcId] = {
            hashlock,
            timelock: Date.now() + timelock,
            sender,
            receiver
        };
        console.log(`[HTLC] Created HTLC ${htlcId} with hash ${hashlock}`);
        return htlcId;
    }
    claimHTLC(htlcId, secret) {
        const htlc = this.htlcStore[htlcId];
        if (!htlc)
            return false;
        const hash = crypto.createHash('sha256').update(secret).digest('hex');
        if (hash !== htlc.hashlock)
            return false;
        if (Date.now() > htlc.timelock)
            return false;
        htlc.fulfilled = true;
        htlc.secret = secret;
        console.log(`[HTLC] Claimed HTLC ${htlcId} by ${htlc.receiver}`);
        return true;
    }
    refundHTLC(htlcId) {
        const htlc = this.htlcStore[htlcId];
        if (!htlc)
            return false;
        if (htlc.fulfilled)
            return false;
        if (Date.now() < htlc.timelock)
            return false;
        delete this.htlcStore[htlcId];
        console.log(`[HTLC] Refunded HTLC ${htlcId} to ${htlc.sender}`);
        return true;
    }
    getHTLC(htlcId) {
        return this.htlcStore[htlcId];
    }
}