115 lines
3.5 KiB
JavaScript
115 lines
3.5 KiB
JavaScript
/*
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Example of using the Budget program to perform a time-lock payment of 50
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tokens from account1 to account2.
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*/
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//eslint-disable-next-line import/no-commonjs
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const solanaWeb3 = require('..');
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//const solanaWeb3 = require('@solana/web3.js');
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const account1 = new solanaWeb3.Account();
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const account2 = new solanaWeb3.Account();
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const contractFunds = new solanaWeb3.Account();
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const contractState = new solanaWeb3.Account();
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let url;
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url = 'http://localhost:8899';
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//url = 'https://api.testnet.solana.com/master';
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//url = 'https://api.testnet.solana.com';
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const connection = new solanaWeb3.Connection(url);
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function showBalance() {
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console.log(`\n== Account State`);
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return Promise.all([
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connection.getBalance(account1.publicKey),
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connection.getBalance(account2.publicKey),
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connection.getBalance(contractFunds.publicKey),
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connection.getBalance(contractState.publicKey),
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]).then(([fromBalance, toBalance, contractFundsBalance, contractStateBalance]) => {
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console.log(`Account1: ${account1.publicKey} has a balance of ${fromBalance}`);
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console.log(`Account2: ${account2.publicKey} has a balance of ${toBalance}`);
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console.log(`Contract Funds: ${contractFunds.publicKey} has a balance of ${contractFundsBalance}`);
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console.log(`Contract State: ${contractState.publicKey} has a balance of ${contractStateBalance}`);
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});
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}
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function confirmTransaction(signature) {
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console.log('Confirming transaction:', signature);
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return connection.getSignatureStatus(signature)
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.then((confirmation) => {
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if (confirmation !== 'Confirmed') {
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throw new Error(`Transaction was not confirmed (${confirmation})`);
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}
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console.log('Transaction confirmed');
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});
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}
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function airDrop() {
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console.log(`\n== Requesting airdrop of 100 to ${account1.publicKey}`);
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return connection.requestAirdrop(account1.publicKey, 100)
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.then(confirmTransaction);
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}
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showBalance()
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.then(airDrop)
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.then(showBalance)
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.then(() => {
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console.log(`\n== Creating account for the contract funds`);
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const transaction = solanaWeb3.SystemProgram.createAccount(
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account1.publicKey,
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contractFunds.publicKey,
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50, // number of tokens to transfer
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0,
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solanaWeb3.BudgetProgram.programId,
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);
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return connection.sendTransaction(account1, transaction);
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})
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.then(confirmTransaction)
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.then(showBalance)
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.then(() => {
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console.log(`\n== Creating account for the contract state`);
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const transaction = solanaWeb3.SystemProgram.createAccount(
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account1.publicKey,
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contractState.publicKey,
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1, // account1 pays 1 token to hold the contract state
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solanaWeb3.BudgetProgram.space,
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solanaWeb3.BudgetProgram.programId,
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);
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return connection.sendTransaction(account1, transaction);
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})
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.then(confirmTransaction)
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.then(showBalance)
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.then(() => {
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console.log(`\n== Initializing contract`);
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const transaction = solanaWeb3.BudgetProgram.pay(
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contractFunds.publicKey,
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contractState.publicKey,
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account2.publicKey,
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50,
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solanaWeb3.BudgetProgram.timestampCondition(account1.publicKey, new Date('2050')),
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);
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return connection.sendTransaction(contractFunds, transaction);
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})
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.then(confirmTransaction)
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.then(showBalance)
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.then(() => {
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console.log(`\n== Witness contract`);
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const transaction = solanaWeb3.BudgetProgram.applyTimestamp(
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account1.publicKey,
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contractState.publicKey,
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account2.publicKey,
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new Date('2050'),
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);
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return connection.sendTransaction(account1, transaction);
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})
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.then(confirmTransaction)
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.then(showBalance)
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.then(() => {
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console.log('\nDone');
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})
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.catch((err) => {
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console.log(err);
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});
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