#![cfg(feature = "test-bpf")]

mod helpers;

use helpers::*;
use solana_program::hash::Hash;
use solana_program::instruction::AccountMeta;
use solana_program::instruction::Instruction;
use solana_program_test::*;
use solana_sdk::{
    instruction::InstructionError, signature::Keypair, signature::Signer, transaction::Transaction,
    transaction::TransactionError, transport::TransportError,
};
use spl_stake_pool::*;

async fn setup() -> (
    BanksClient,
    Keypair,
    Hash,
    StakePoolAccounts,
    Keypair,
    Keypair,
) {
    let (mut banks_client, payer, recent_blockhash) = program_test().start().await;
    let stake_pool_accounts = StakePoolAccounts::new();
    stake_pool_accounts
        .initialize_stake_pool(&mut banks_client, &payer, &recent_blockhash)
        .await
        .unwrap();

    let new_pool_fee = Keypair::new();
    let new_owner = Keypair::new();
    create_token_account(
        &mut banks_client,
        &payer,
        &recent_blockhash,
        &new_pool_fee,
        &stake_pool_accounts.pool_mint.pubkey(),
        &new_owner.pubkey(),
    )
    .await
    .unwrap();

    (
        banks_client,
        payer,
        recent_blockhash,
        stake_pool_accounts,
        new_pool_fee,
        new_owner,
    )
}

#[tokio::test]
async fn test_set_owner() {
    let (mut banks_client, payer, recent_blockhash, stake_pool_accounts, new_pool_fee, new_owner) =
        setup().await;

    let mut transaction = Transaction::new_with_payer(
        &[instruction::set_owner(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &stake_pool_accounts.owner.pubkey(),
            &new_owner.pubkey(),
            &new_pool_fee.pubkey(),
        )
        .unwrap()],
        Some(&payer.pubkey()),
    );
    transaction.sign(&[&payer, &stake_pool_accounts.owner], recent_blockhash);
    banks_client.process_transaction(transaction).await.unwrap();

    let stake_pool = get_account(&mut banks_client, &stake_pool_accounts.stake_pool.pubkey()).await;
    let stake_pool = state::StakePool::deserialize(&stake_pool.data.as_slice()).unwrap();

    assert_eq!(stake_pool.owner, new_owner.pubkey());
}

#[tokio::test]
async fn test_set_owner_by_malicious() {
    let (mut banks_client, payer, recent_blockhash, stake_pool_accounts, new_pool_fee, new_owner) =
        setup().await;

    let mut transaction = Transaction::new_with_payer(
        &[instruction::set_owner(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &new_owner.pubkey(),
            &new_owner.pubkey(),
            &new_pool_fee.pubkey(),
        )
        .unwrap()],
        Some(&payer.pubkey()),
    );
    transaction.sign(&[&payer, &new_owner], recent_blockhash);
    let transaction_error = banks_client
        .process_transaction(transaction)
        .await
        .err()
        .unwrap();

    match transaction_error {
        TransportError::TransactionError(TransactionError::InstructionError(
            _,
            InstructionError::Custom(error_index),
        )) => {
            let program_error = error::StakePoolError::WrongOwner as u32;
            assert_eq!(error_index, program_error);
        }
        _ => panic!("Wrong error occurs while malicious try to set owner"),
    }
}

#[tokio::test]
async fn test_set_owner_without_signature() {
    let (mut banks_client, payer, recent_blockhash, stake_pool_accounts, new_pool_fee, new_owner) =
        setup().await;

    let args = instruction::StakePoolInstruction::SetOwner;
    let data = args.serialize().unwrap();
    let accounts = vec![
        AccountMeta::new(stake_pool_accounts.stake_pool.pubkey(), false),
        AccountMeta::new_readonly(stake_pool_accounts.owner.pubkey(), false),
        AccountMeta::new_readonly(new_owner.pubkey(), false),
        AccountMeta::new_readonly(new_pool_fee.pubkey(), false),
    ];
    let instruction = Instruction {
        program_id: id(),
        accounts,
        data,
    };

    let mut transaction = Transaction::new_with_payer(&[instruction], Some(&payer.pubkey()));
    transaction.sign(&[&payer], recent_blockhash);
    let transaction_error = banks_client
        .process_transaction(transaction)
        .await
        .err()
        .unwrap();

    match transaction_error {
        TransportError::TransactionError(TransactionError::InstructionError(
            _,
            InstructionError::Custom(error_index),
        )) => {
            let program_error = error::StakePoolError::SignatureMissing as u32;
            assert_eq!(error_index, program_error);
        }
        _ => panic!("Wrong error occurs while try to set new owner without signature"),
    }
}

#[tokio::test]
async fn test_set_owner_with_wrong_mint_for_pool_fee_acc() {
    let (mut banks_client, payer, recent_blockhash) = program_test().start().await;
    let stake_pool_accounts = StakePoolAccounts::new();
    stake_pool_accounts
        .initialize_stake_pool(&mut banks_client, &payer, &recent_blockhash)
        .await
        .unwrap();

    let new_mint = Keypair::new();
    let new_withdraw_auth = Keypair::new();
    let new_pool_fee = Keypair::new();
    let new_owner = Keypair::new();

    create_mint(
        &mut banks_client,
        &payer,
        &recent_blockhash,
        &new_mint,
        &new_withdraw_auth.pubkey(),
    )
    .await
    .unwrap();
    create_token_account(
        &mut banks_client,
        &payer,
        &recent_blockhash,
        &new_pool_fee,
        &new_mint.pubkey(),
        &new_owner.pubkey(),
    )
    .await
    .unwrap();

    let mut transaction = Transaction::new_with_payer(
        &[instruction::set_owner(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &stake_pool_accounts.owner.pubkey(),
            &new_owner.pubkey(),
            &new_pool_fee.pubkey(),
        )
        .unwrap()],
        Some(&payer.pubkey()),
    );
    transaction.sign(&[&payer, &stake_pool_accounts.owner], recent_blockhash);
    let transaction_error = banks_client
        .process_transaction(transaction)
        .await
        .err()
        .unwrap();

    match transaction_error {
        TransportError::TransactionError(TransactionError::InstructionError(
            _,
            InstructionError::Custom(error_index),
        )) => {
            let program_error = error::StakePoolError::WrongAccountMint as u32;
            assert_eq!(error_index, program_error);
        }
        _ => panic!("Wrong error occurs while try to set new owner with wrong mint"),
    }
}