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

mod helpers;

use crate::solana_program::pubkey::Pubkey;
use helpers::*;

use bincode::deserialize;
use solana_sdk::{
    instruction::InstructionError,
    signature::{Keypair, Signer},
    transaction::Transaction,
    transaction::TransactionError,
    transport::TransportError,
};
use spl_stake_pool::*;

#[tokio::test]
async fn test_create_validator_stake_account() {
    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 validator = Pubkey::new_unique();
    let user_stake_authority = Keypair::new();
    let user_withdraw_authority = Keypair::new();

    let (stake_account, _) = processor::Processor::find_stake_address_for_validator(
        &id(),
        &validator,
        &stake_pool_accounts.stake_pool.pubkey(),
    );

    let mut transaction = Transaction::new_with_payer(
        &[instruction::create_validator_stake_account(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &payer.pubkey(),
            &stake_account,
            &validator,
            &user_stake_authority.pubkey(),
            &user_withdraw_authority.pubkey(),
            &solana_program::system_program::id(),
            &stake::id(),
        )
        .unwrap()],
        Some(&payer.pubkey()),
    );
    transaction.sign(&[&payer], recent_blockhash);
    banks_client.process_transaction(transaction).await.unwrap();

    // Check authorities
    let stake = get_account(&mut banks_client, &stake_account).await;
    let stake_state = deserialize::<stake::StakeState>(&stake.data).unwrap();
    match stake_state {
        stake::StakeState::Initialized(meta) => {
            assert_eq!(&meta.authorized.staker, &user_stake_authority.pubkey());
            assert_eq!(
                &meta.authorized.withdrawer,
                &user_withdraw_authority.pubkey()
            );
        }
        _ => panic!(),
    }
}

#[tokio::test]
async fn test_create_validator_stake_account_with_incorrect_address() {
    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 validator = Pubkey::new_unique();
    let user_stake_authority = Keypair::new();
    let user_withdraw_authority = Keypair::new();
    let stake_account = Keypair::new();

    let mut transaction = Transaction::new_with_payer(
        &[instruction::create_validator_stake_account(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &payer.pubkey(),
            &stake_account.pubkey(),
            &validator,
            &user_stake_authority.pubkey(),
            &user_withdraw_authority.pubkey(),
            &solana_program::system_program::id(),
            &stake::id(),
        )
        .unwrap()],
        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::InvalidStakeAccountAddress as u32;
            assert_eq!(error_index, program_error);
        }
        _ => panic!(
            "Wrong error occurs while try to create validator stake account with incorrect address"
        ),
    }
}

#[tokio::test]
async fn test_create_validator_stake_account_with_wrong_system_program() {
    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 validator = Pubkey::new_unique();
    let user_stake_authority = Keypair::new();
    let user_withdraw_authority = Keypair::new();

    let (stake_account, _) = processor::Processor::find_stake_address_for_validator(
        &id(),
        &validator,
        &stake_pool_accounts.stake_pool.pubkey(),
    );

    let wrong_system_program = Keypair::new();

    let mut transaction = Transaction::new_with_payer(
        &[instruction::create_validator_stake_account(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &payer.pubkey(),
            &stake_account,
            &validator,
            &user_stake_authority.pubkey(),
            &user_withdraw_authority.pubkey(),
            &wrong_system_program.pubkey(),
            &stake::id(),
        )
        .unwrap()],
        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(_, error)) => {
            assert_eq!(error, InstructionError::IncorrectProgramId);
        }
        _ => panic!(
            "Wrong error occurs while try to create validator stake account with wrong token program ID"
        ),
    }
}

#[tokio::test]
async fn test_create_validator_stake_account_with_wrong_stake_program() {
    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 validator = Pubkey::new_unique();
    let user_stake_authority = Keypair::new();
    let user_withdraw_authority = Keypair::new();

    let (stake_account, _) = processor::Processor::find_stake_address_for_validator(
        &id(),
        &validator,
        &stake_pool_accounts.stake_pool.pubkey(),
    );

    let wrong_stake_program = Keypair::new();

    let mut transaction = Transaction::new_with_payer(
        &[instruction::create_validator_stake_account(
            &id(),
            &stake_pool_accounts.stake_pool.pubkey(),
            &payer.pubkey(),
            &stake_account,
            &validator,
            &user_stake_authority.pubkey(),
            &user_withdraw_authority.pubkey(),
            &solana_program::system_program::id(),
            &wrong_stake_program.pubkey(),
        )
        .unwrap()],
        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(_, error)) => {
            assert_eq!(error, InstructionError::IncorrectProgramId);
        }
        _ => panic!(
            "Wrong error occurs while try to create validator stake account with wrong stake program ID"
        ),
    }
}