Pembayaran batch

// Click ">" icon on left to expand demo imports

// Generate keypairs for sender and two recipients
const sender = (await generateKeypair()).signer;
const recipient1 = (await generateKeypair()).signer;
const recipient2 = (await generateKeypair()).signer;

console.log("Sender Address:", sender.address);
console.log("Recipient 1 Address:", recipient1.address);
console.log("Recipient 2 Address:", recipient2.address);

// Demo Setup: Create client, mint account, token accounts, and fund with initial tokens
const { client, mint } = await demoSetup(sender, recipient1, recipient2);

console.log("\nMint Address:", mint.address);

// Derive the Associated Token Accounts addresses (ATAs) for sender and recipients
const [senderAta] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: sender.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [recipient1Ata] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipient1.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

const [recipient2Ata] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: recipient2.address,
  tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});

console.log("Sender Token Account:", senderAta.toString());
console.log("Recipient 1 Token Account:", recipient1Ata.toString());
console.log("Recipient 2 Token Account:", recipient2Ata.toString());

// =============================================================================
// Batch Token Payment Demo
// =============================================================================

// Create instructions to transfer tokens from sender to both recipients
// Transferring 250,000 base units = 0.25 tokens (with 6 decimals) to each
const transfer1Instruction = getTransferInstruction({
  source: senderAta,
  destination: recipient1Ata,
  authority: sender.address,
  amount: 250_000n // 0.25 tokens
});

const transfer2Instruction = getTransferInstruction({
  source: senderAta,
  destination: recipient2Ata,
  authority: sender.address,
  amount: 250_000n // 0.25 tokens
});

// Prepare and send both transfers in a single transaction using @solana/client
const signature = await client.transaction.prepareAndSend({
  authority: sender,
  instructions: [transfer1Instruction, transfer2Instruction],
  version: 0
});

console.log("\n=== Batch Token Payment Complete ===");
console.log("Transaction Signature:", signature.toString());

// Fetch final token account balances using @solana/client SPL token helper
const splToken = client.splToken({
  mint: mint.address,
  tokenProgram: "auto"
});

const senderBalance = await splToken.fetchBalance(sender.address);
const recipient1Balance = await splToken.fetchBalance(recipient1.address);
const recipient2Balance = await splToken.fetchBalance(recipient2.address);

console.log("\nSender Token Account Balance:", senderBalance);
console.log("Recipient 1 Token Account Balance:", recipient1Balance);
console.log("Recipient 2 Token Account Balance:", recipient2Balance);

// =============================================================================
// Demo Setup Helper Function
// =============================================================================