//! 虚拟银行测试设置
//!
//! 提供虚拟银行的初始化和配置辅助函数

use rust_decimal::Decimal;
use rust_decimal_macros::dec;

use rustjr::infrastructure::bank_integration::{
    BankClient,
    mock_bank::{FailureConfig, MockBankClient, MockBankTestEnv},
};

use super::fixtures::{
    gen_inmate_account_no, FAMILY_ACCOUNT, FAMILY_ACCOUNT_NAME,
    PRISON_MAIN_ACCOUNT, PRISON_MAIN_ACCOUNT_NAME,
};

// ==================== 虚拟银行环境 ====================

/// 标准测试银行环境
pub struct TestBankEnv {
    /// 虚拟银行客户端
    pub client: MockBankClient,
    /// 监狱主账户号
    pub prison_account: String,
    /// 家属账户号
    pub family_account: String,
}

impl TestBankEnv {
    /// 创建标准测试环境
    ///
    /// 包含：
    /// - 监狱主账户：初始余额 1,000,000
    /// - 家属账户：初始余额 100,000
    pub fn new() -> Self {
        let client = MockBankClient::new();

        // 创建监狱主账户
        client
            .create_account(
                PRISON_MAIN_ACCOUNT,
                PRISON_MAIN_ACCOUNT_NAME,
                dec!(1000000.00),
            )
            .expect("创建监狱账户失败");

        // 创建家属账户
        client
            .create_account(FAMILY_ACCOUNT, FAMILY_ACCOUNT_NAME, dec!(100000.00))
            .expect("创建家属账户失败");

        Self {
            client,
            prison_account: PRISON_MAIN_ACCOUNT.to_string(),
            family_account: FAMILY_ACCOUNT.to_string(),
        }
    }

    /// 创建罪犯子账户
    pub fn create_inmate_account(
        &self,
        inmate_id: i64,
        initial_balance: Decimal,
    ) -> String {
        let account_no = gen_inmate_account_no(inmate_id);
        let account_name = format!("罪犯{}账户", inmate_id);

        self.client
            .create_account(&account_no, &account_name, initial_balance)
            .expect("创建罪犯账户失败");

        account_no
    }

    /// 启用故障注入
    pub fn enable_failures(&self) {
        self.client
            .set_failure_config(FailureConfig::for_testing());
    }

    /// 禁用故障注入
    pub fn disable_failures(&self) {
        self.client.set_failure_enabled(false);
    }

    /// 配置强制超时
    pub fn force_timeout(&self) {
        self.client.set_failure_config(FailureConfig::force_timeout());
    }

    /// 配置强制失败
    pub fn force_failure(&self) {
        self.client.set_failure_config(FailureConfig::force_failure());
    }

    /// 重置环境
    pub fn reset(&self) {
        self.client.reset();
        // 重新创建账户
        self.client
            .create_account(
                PRISON_MAIN_ACCOUNT,
                PRISON_MAIN_ACCOUNT_NAME,
                dec!(1000000.00),
            )
            .expect("重建监狱账户失败");

        self.client
            .create_account(FAMILY_ACCOUNT, FAMILY_ACCOUNT_NAME, dec!(100000.00))
            .expect("重建家属账户失败");
    }
}

impl Default for TestBankEnv {
    fn default() -> Self {
        Self::new()
    }
}

// ==================== 快捷创建函数 ====================

/// 创建标准测试银行环境
pub fn setup_test_bank() -> TestBankEnv {
    TestBankEnv::new()
}

/// 创建带故障注入的测试银行环境
pub fn setup_test_bank_with_failures() -> TestBankEnv {
    let env = TestBankEnv::new();
    env.enable_failures();
    env
}

/// 创建强制超时的测试银行环境
pub fn setup_test_bank_force_timeout() -> TestBankEnv {
    let env = TestBankEnv::new();
    env.force_timeout();
    env
}

/// 创建强制失败的测试银行环境
pub fn setup_test_bank_force_failure() -> TestBankEnv {
    let env = TestBankEnv::new();
    env.force_failure();
    env
}

// ==================== 验证辅助函数 ====================

/// 验证银行余额
pub async fn assert_bank_balance(
    client: &MockBankClient,
    account_no: &str,
    expected: Decimal,
) {
    let balance = client.query_balance(account_no).await.expect("查询余额失败");
    assert_eq!(
        balance.balance, expected,
        "账户 {} 余额不符: 期望 {}, 实际 {}",
        account_no, expected, balance.balance
    );
}

/// 验证银行可用余额
pub async fn assert_available_balance(
    client: &MockBankClient,
    account_no: &str,
    expected: Decimal,
) {
    let balance = client.query_balance(account_no).await.expect("查询余额失败");
    assert_eq!(
        balance.available_balance, expected,
        "账户 {} 可用余额不符: 期望 {}, 实际 {}",
        account_no, expected, balance.available_balance
    );
}

#[cfg(test)]
mod tests {
    use super::*;

    #[tokio::test]
    async fn test_setup_env() {
        let env = setup_test_bank();
        
        let prison_balance = env.client.query_balance(&env.prison_account).await.unwrap();
        assert_eq!(prison_balance.balance, dec!(1000000.00));

        let family_balance = env.client.query_balance(&env.family_account).await.unwrap();
        assert_eq!(family_balance.balance, dec!(100000.00));
    }

    #[tokio::test]
    async fn test_create_inmate_account() {
        let env = setup_test_bank();
        let inmate_account = env.create_inmate_account(1001, dec!(5000.00));
        
        let balance = env.client.query_balance(&inmate_account).await.unwrap();
        assert_eq!(balance.balance, dec!(5000.00));
    }
}