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Update run-predicate.ts #512

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Update run-predicate.ts #512

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75 changes: 40 additions & 35 deletions contracts/predicate/scripts/run-predicate.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,55 +5,60 @@ import { BaseAssetId, Predicate, Provider, Wallet, bn, hexlify } from 'fuels';

const { NEXT_PUBLIC_FUEL_CHAIN_NAME, PRIVATE_KEY } = process.env;
const BIN_PATH = resolve(__dirname, '../out/debug/predicate-app.bin');
const ABI_PATH = resolve(__dirname, '../out/debug/predicate-app-abi.json');
const AMOUNT = 300_000;
const GAS_DEDUCTION = 150_000;

if (!NEXT_PUBLIC_FUEL_CHAIN_NAME || !PRIVATE_KEY) {
throw new Error(
'Missing some config in .env file. Should have NEXT_PUBLIC_FUEL_CHAIN_NAME and PRIVATE_KEY',
'Missing necessary config in .env file. Ensure NEXT_PUBLIC_FUEL_CHAIN_NAME and PRIVATE_KEY are set.',
);
}

const providerUrl = FUEL_CHAIN.providerUrl;

async function main() {
const binHex = hexlify(await fs.readFile(BIN_PATH));
const provider = await Provider.create(providerUrl);
const wallet = Wallet.fromPrivateKey(PRIVATE_KEY!, provider);
const { minGasPrice: gasPrice } = wallet.provider.getGasConfig();
const walletAddress = wallet.address.toB256();
const abiPath = resolve(__dirname, '../out/debug/predicate-app-abi.json');
const abi = await fs.readFile(abiPath, 'utf-8');
const abiJson = JSON.parse(abi);
const predicate = new Predicate(binHex, provider, abiJson);

console.log('💰 Funding predicate...');
const tx1 = await wallet.transfer(predicate.address, AMOUNT, BaseAssetId, {
gasPrice,
});

const res1 = await tx1.waitForResult();
const predicateBalance = bn(await predicate.getBalance());
console.log(`→ Transaction Id: ${res1.id}`);
console.log(`→ Predicate balance: ${predicateBalance.format()}`);
console.log(`→ Predicate Id: ${predicate.address.toB256()}`);
console.log(`📝 Wallet address: ${walletAddress}\n`);

console.log('⌛️ Running predicate...');
predicate.setData(walletAddress);

try {
const tx2 = await predicate.transfer(
wallet.address,
AMOUNT - 150_000,
BaseAssetId,
{
gasPrice,
},
);
const binHex = hexlify(await fs.readFile(BIN_PATH));
const provider = await Provider.create(providerUrl);
const wallet = Wallet.fromPrivateKey(PRIVATE_KEY!, provider);

// Fetch gas price configuration
const { minGasPrice: gasPrice } = wallet.provider.getGasConfig();
const walletAddress = wallet.address.toB256();

// Load ABI for predicate
const abi = await fs.readFile(ABI_PATH, 'utf-8');
const abiJson = JSON.parse(abi);
const predicate = new Predicate(binHex, provider, abiJson);

console.log('💰 Funding predicate...');

// Transfer funds to predicate address
const tx1 = await wallet.transfer(predicate.address, AMOUNT, BaseAssetId, { gasPrice });
const res1 = await tx1.waitForResult();

const predicateBalance = bn(await predicate.getBalance());
console.log(`→ Transaction Id: ${res1.id}`);
console.log(`→ Predicate balance: ${predicateBalance.format()}`);
console.log(`→ Predicate Id: ${predicate.address.toB256()}`);
console.log(`📝 Wallet address: ${walletAddress}\n`);

console.log('⌛️ Running predicate...');
predicate.setData(walletAddress);

// Transfer funds back from predicate
const transferAmount = AMOUNT - GAS_DEDUCTION;
if (transferAmount <= 0) {
throw new Error('Insufficient amount after gas deduction');
}

const tx2 = await predicate.transfer(wallet.address, transferAmount, BaseAssetId, { gasPrice });
const res2 = await tx2.waitForResult();

console.log(`→ Transaction Id: ${res2.id}`);
} catch (error: any) {
console.error(error?.response?.errors?.[0].message);
console.error('An error occurred:', error?.response?.errors?.[0]?.message || error.message);
}
}

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