End to End test

config/e2e.config.yaml

@@ -1,5 +1,5 @@
 db:
-  path: ./.silent-pay-indexer/db/database.sqlite
+  path: ':memory:'
   synchronize: true
 app:
   port: 3000
@@ -11,6 +11,6 @@ providerType: BITCOIN_CORE_RPC
 bitcoinCore:
   protocol: http
   rpcHost: localhost
-  rpcPass: polarpass
+  rpcPass: password
   rpcUser: polaruser
   rpcPort: 18443

e2e/helpers/api.helper.ts

@@ -13,12 +13,12 @@ export class ApiHelper {
         this.baseUrl = `http://localhost:${config.app.port}`;
     }
 
-    async get<TResponseData = any>(path: string, params?: any) {
+    async get<TResponseData = any>(path: string, params?: AxiosRequestConfig) {
         return this.makeRequest<TResponseData>({
             method: 'get',
             url: `${this.baseUrl}${path}`,
-            params,
             validateStatus: () => true,
+            ...params,
         });
     }
 

e2e/helpers/common.helper.ts

@@ -0,0 +1,98 @@
+import { Payment, Transaction } from 'bitcoinjs-lib';
+import { IndexerService } from '@/indexer/indexer.service';
+import { SATS_PER_BTC } from '@/common/constants';
+import * as currency from 'currency.js';
+import { varIntSize } from '@/common/common';
+
+export function generateScanTweak(
+    transaction: Transaction,
+    outputs: Payment[],
+    indexerService: IndexerService,
+): string {
+    const txins = transaction.ins.map((input, index) => {
+        const isWitness = transaction.hasWitnesses();
+
+        return {
+            txid: input.hash.reverse().toString('hex'),
+            vout: input.index,
+            scriptSig: isWitness ? '' : input.script.toString('hex'),
+            witness: isWitness
+                ? input.witness.map((v) => v.toString('hex'))
+                : undefined,
+            prevOutScript: outputs[index].output.toString('hex'),
+        };
+    });
+    const txouts = transaction.outs.map((output) => ({
+        scriptPubKey: output.script.toString('hex'),
+        value: output.value,
+    }));
+
+    const [scanTweak] = indexerService.computeScanTweak(txins, txouts);
+
+    return scanTweak.toString('hex');
+}
+
+export const readVarInt = (data: Buffer, cursor: number): number => {
+    const firstByte = data.readUInt8(cursor);
+    if (firstByte < 0xfd) return firstByte;
+    else if (firstByte === 0xfd) return data.readUInt16LE(cursor + 1);
+    else if (firstByte === 0xfe) return data.readUInt32LE(cursor + 1);
+    else return Number(data.readBigUInt64LE(cursor + 1));
+};
+
+export interface SilentBlockTransaction {
+    txid: string;
+    outputs: {
+        value: number;
+        pubkey: string;
+        vout: number;
+    }[];
+    scanTweak: string;
+}
+
+export interface SilentBlock {
+    type: number;
+    transactions: SilentBlockTransaction[];
+}
+
+export const parseSilentBlock = (data: Buffer): SilentBlock => {
+    const type = data.readUInt8(0);
+    const transactions: SilentBlockTransaction[] = [];
+
+    let cursor = 1;
+    const count = readVarInt(data, cursor);
+    cursor += varIntSize(count);
+
+    for (let i = 0; i < count; i++) {
+        const txid = data.subarray(cursor, cursor + 32).toString('hex');
+        cursor += 32;
+
+        const outputs = [];
+        const outputCount = readVarInt(data, cursor);
+        cursor += varIntSize(outputCount);
+
+        for (let j = 0; j < outputCount; j++) {
+            const value = Number(data.readBigUInt64BE(cursor));
+            cursor += 8;
+
+            const pubkey = data.subarray(cursor, cursor + 32).toString('hex');
+            cursor += 32;
+
+            const vout = data.readUint32BE(cursor);
+            cursor += 4;
+
+            outputs.push({ value, pubkey, vout });
+        }
+
+        const scanTweak = data.subarray(cursor, cursor + 33).toString('hex');
+        cursor += 33;
+
+        transactions.push({ txid, outputs, scanTweak });
+    }
+
+    return { type, transactions };
+};
+
+export const btcToSats = (amount: number): number => {
+    return currency(amount, { precision: 8 }).multiply(SATS_PER_BTC).value;
+};

e2e/helpers/docker/docker-compose.yml

@@ -8,7 +8,8 @@ services:
         rest=1
         rpcbind=0.0.0.0:18443
         rpcallowip=0.0.0.0/0
-        rpcauth=polaruser:29fc7c114646a46c59c029eb076a0967$a985383e5b88d84acf241765c558c408b3fed0ab887575568b4e7fb8e77af6e4
+        rpcuser=polaruser
+        rpcpassword=password
         debug=1
         logips=1
         logtimemicros=1

e2e/helpers/rpc.helper.ts

@@ -0,0 +1,116 @@
+import { readFileSync } from 'fs';
+import * as yaml from 'js-yaml';
+import axios, { AxiosRequestConfig } from 'axios';
+
+type PartialUtxo = {
+    value: number;
+    scriptPubKey: {
+        address: string;
+    };
+};
+
+export class BitcoinRPCUtil {
+    private readonly axiosConfig: AxiosRequestConfig;
+
+    constructor(configPath = './config/e2e.config.yaml') {
+        const config = yaml.load(readFileSync(configPath, 'utf8')) as Record<
+            string,
+            any
+        >;
+        const user = config.bitcoinCore.rpcUser;
+        const password = config.bitcoinCore.rpcPass;
+        const host = config.bitcoinCore.rpcHost;
+        const port = config.bitcoinCore.rpcPort;
+        const protocol = config.bitcoinCore.protocol;
+        this.axiosConfig = {
+            method: 'POST',
+            auth: {
+                username: user,
+                password: password,
+            },
+            url: `${protocol}://${host}:${port}/`,
+        };
+    }
+
+    public async request(config: AxiosRequestConfig): Promise<any> {
+        try {
+            const response = await axios.request({
+                ...this.axiosConfig,
+                ...config,
+            });
+            return response.data?.result;
+        } catch (error) {
+            if (axios.isAxiosError(error)) {
+                return {
+                    body: error.response?.data,
+                    status: error.response?.status,
+                };
+            } else {
+                throw error;
+            }
+        }
+    }
+
+    createWallet(walletName: string): Promise<any> {
+        return this.request({
+            data: {
+                method: 'createwallet',
+                params: [walletName],
+            },
+        });
+    }
+
+    getNewAddress(): Promise<string> {
+        return this.request({
+            data: {
+                method: 'getnewaddress',
+                params: [],
+            },
+        });
+    }
+
+    mineToAddress(numBlocks: number, address: string): Promise<any> {
+        return this.request({
+            data: {
+                method: 'generatetoaddress',
+                params: [numBlocks, address],
+            },
+        });
+    }
+
+    sendToAddress(address: string, amount: number): Promise<string> {
+        return this.request({
+            data: {
+                method: 'sendtoaddress',
+                params: [address, amount],
+            },
+        });
+    }
+
+    sendRawTransaction(rawTx: string): Promise<any> {
+        return this.request({
+            data: {
+                method: 'sendrawtransaction',
+                params: [rawTx],
+            },
+        });
+    }
+
+    getTxOut(txid: string, vout: number): Promise<PartialUtxo> {
+        return this.request({
+            data: {
+                method: 'gettxout',
+                params: [txid, vout],
+            },
+        });
+    }
+
+    getRawTransaction(txid: string): Promise<any> {
+        return this.request({
+            data: {
+                method: 'getrawtransaction',
+                params: [txid],
+            },
+        });
+    }
+}

e2e/helpers/wallet.helper.ts

@@ -0,0 +1,107 @@
+import { BIP32Interface, fromSeed } from 'bip32';
+import * as ecc from 'tiny-secp256k1';
+import {
+    initEccLib,
+    payments,
+    Psbt,
+    networks,
+    Payment,
+    Transaction,
+} from 'bitcoinjs-lib';
+import { btcToSats } from '@e2e/helpers/common.helper';
+import { randomBytes } from 'crypto';
+import { toXOnly } from 'bitcoinjs-lib/src/psbt/bip371';
+
+initEccLib(ecc);
+
+export type UTXO = {
+    txid: string;
+    vout: number;
+    value: number;
+    rawTx: string;
+};
+
+export class WalletHelper {
+    private root: BIP32Interface;
+
+    constructor() {
+        this.root = fromSeed(randomBytes(64), networks.regtest);
+    }
+
+    generateAddresses(count: number, type: 'p2wpkh' | 'p2tr'): Payment[] {
+        const outputs: Payment[] = [];
+        for (let i = 0; i < count; i++) {
+            const path = `m/84'/0'/0'/0/${i}`;
+            const child = this.root.derivePath(path);
+            let output: Payment;
+
+            switch (type) {
+                case 'p2wpkh':
+                    output = payments.p2wpkh({
+                        pubkey: child.publicKey,
+                        network: networks.regtest,
+                    });
+                    break;
+                case 'p2tr':
+                    output = payments.p2tr({
+                        internalPubkey: toXOnly(child.publicKey),
+                        network: networks.regtest,
+                    });
+                    break;
+                default:
+                    throw new Error('Unsupported address type');
+            }
+
+            outputs.push(output);
+        }
+        return outputs;
+    }
+
+    /**
+     * Craft and sign a transaction sending 5.999 BTC to the provided Taproot address.
+     *
+     * @param utxos - Array of UTXOs to spend from.
+     * @param taprootOutput - The Taproot output to send to.
+     * @returns {Transaction} The raw signed transaction.
+     */
+    craftTransaction(utxos: UTXO[], taprootOutput: Payment): Transaction {
+        const psbt = new Psbt({ network: networks.regtest });
+
+        utxos.forEach((utxo) => {
+            psbt.addInput({
+                hash: utxo.txid,
+                index: utxo.vout,
+                nonWitnessUtxo: Buffer.from(utxo.rawTx, 'hex'),
+            });
+        });
+
+        // Add the output to the Taproot address (6 BTC)
+        const totalInputValue = utxos.reduce(
+            (acc, utxo) => acc + utxo.value,
+            0,
+        );
+
+        const outputValue = btcToSats(5.999);
+        const fee = btcToSats(0.001);
+
+        if (totalInputValue < outputValue + fee) {
+            throw new Error('Insufficient funds');
+        }
+
+        psbt.addOutput({
+            address: taprootOutput.address,
+            tapInternalKey: taprootOutput.internalPubkey,
+            value: outputValue,
+        });
+
+        // Sign the inputs with the corresponding private keys
+        utxos.forEach((utxo, index) => {
+            const keyPair = this.root.derivePath(`m/84'/0'/0'/0/${index}`);
+            psbt.signInput(index, keyPair);
+        });
+
+        psbt.finalizeAllInputs();
+
+        return psbt.extractTransaction(true);
+    }
+}