import * as anchor from '@coral-xyz/anchor';
import type { Program } from '@coral-xyz/anchor';
import { createMemoInstruction } from '@solana/spl-memo';
import { TOKEN_2022_PROGRAM_ID, createAccount, createMint, createTransferInstruction, mintTo } from '@solana/spl-token';
import { Transaction, sendAndConfirmTransaction } from '@solana/web3.js';
import type { MemoTransfer } from '../target/types/memo_transfer';

describe('memo-transfer', () => {
  // Configure the client to use the local cluster.
  const provider = anchor.AnchorProvider.env();
  const connection = provider.connection;
  const wallet = provider.wallet as anchor.Wallet;
  anchor.setProvider(provider);

  const program = anchor.workspace.MemoTransfer as Program<MemoTransfer>;

  const mintKeypair = new anchor.web3.Keypair();
  const tokenKeypair = new anchor.web3.Keypair();

  it('Create Token Account with RequiredMemo extension', async () => {
    await createMint(
      connection,
      wallet.payer, // Payer of the transaction and initialization fees
      wallet.publicKey, // Mint Authority
      null, // Optional Freeze Authority
      2, // Decimals of Mint
      mintKeypair, // Optional keypair
      undefined, // Options for confirming the transaction
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    const transactionSignature = await program.methods
      .initialize()
      .accounts({
        mintAccount: mintKeypair.publicKey,
        tokenAccount: tokenKeypair.publicKey,
      })
      .signers([tokenKeypair])
      .rpc({ skipPreflight: true });
    console.log('Your transaction signature', transactionSignature);
  });

  it('Attempt transfer without memo, expect fail', async () => {
    // Create a new token account to transfer to
    const sourceTokenAccount = await createAccount(
      connection,
      wallet.payer, // Payer to create Token Account
      mintKeypair.publicKey, // Mint Account address
      wallet.publicKey, // Token Account owner
      new anchor.web3.Keypair(), // Optional keypair,
      undefined, // Confirmation options
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    await mintTo(connection, wallet.payer, mintKeypair.publicKey, sourceTokenAccount, wallet.payer, 1, [], null, TOKEN_2022_PROGRAM_ID);

    const transferInstruction = createTransferInstruction(
      sourceTokenAccount, // Source Token Account
      tokenKeypair.publicKey, // Destination Token Account
      wallet.publicKey, // Source Token Account owner
      1, // Amount
      undefined, // Additional signers
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    const transaction = new Transaction().add(transferInstruction);

    try {
      // Send transaction
      await sendAndConfirmTransaction(
        connection,
        transaction,
        [wallet.payer], // Signers
      );
    } catch (error) {
      console.log('\nExpect Error:', error.logs);
    }
  });

  it('Attempt transfer with memo, expect success', async () => {
    // Create a new token account to transfer to
    const sourceTokenAccount = await createAccount(
      connection,
      wallet.payer, // Payer to create Token Account
      mintKeypair.publicKey, // Mint Account address
      wallet.publicKey, // Token Account owner
      new anchor.web3.Keypair(), // Optional keypair, default to Associated Token Account
      undefined, // Confirmation options
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    await mintTo(connection, wallet.payer, mintKeypair.publicKey, sourceTokenAccount, wallet.payer, 1, [], null, TOKEN_2022_PROGRAM_ID);

    const memoInstruction = createMemoInstruction('hello, world', [wallet.publicKey]);

    const transferInstruction = createTransferInstruction(
      sourceTokenAccount, // Source Token Account
      tokenKeypair.publicKey, // Destination Token Account
      wallet.publicKey, // Source Token Account owner
      1, // Amount
      undefined, // Additional signers
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    const transaction = new Transaction().add(memoInstruction, transferInstruction);

    const transactionSignature = await sendAndConfirmTransaction(
      connection,
      transaction,
      [wallet.payer], // Signers
    );

    console.log('Your transaction signature', transactionSignature);
  });

  it('Disable RequiredMemo extension', async () => {
    const transactionSignature = await program.methods
      .disable()
      .accounts({
        tokenAccount: tokenKeypair.publicKey,
      })
      .rpc({ skipPreflight: true });
    console.log('Your transaction signature', transactionSignature);
  });

  it('Attempt transfer without memo, expect success', async () => {
    // Create a new token account to transfer to
    const sourceTokenAccount = await createAccount(
      connection,
      wallet.payer, // Payer to create Token Account
      mintKeypair.publicKey, // Mint Account address
      wallet.publicKey, // Token Account owner
      new anchor.web3.Keypair(), // Optional keypair,
      undefined, // Confirmation options
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    await mintTo(connection, wallet.payer, mintKeypair.publicKey, sourceTokenAccount, wallet.payer, 1, [], null, TOKEN_2022_PROGRAM_ID);

    const transferInstruction = createTransferInstruction(
      sourceTokenAccount, // Source Token Account
      tokenKeypair.publicKey, // Destination Token Account
      wallet.publicKey, // Source Token Account owner
      1, // Amount
      undefined, // Additional signers
      TOKEN_2022_PROGRAM_ID, // Token Extension Program ID
    );

    const transaction = new Transaction().add(transferInstruction);

    const transactionSignature = await sendAndConfirmTransaction(
      connection,
      transaction,
      [wallet.payer], // Signers
    );

    console.log('Your transaction signature', transactionSignature);
  });
});