//! 端到端业务测试
//!
//! 综合测试所有核心业务流程，使用虚拟银行模拟器

use chrono::Utc;
use rust_decimal::Decimal;
use rust_decimal_macros::dec;

use rustjr::domain::account::AccountType;
use rustjr::domain::ledger::AccountBalance;
use rustjr::infrastructure::bank_integration::mock_bank::{MockBankClient, MockBankTestEnv, FailureConfig};
use rustjr::infrastructure::bank_integration::{BankClient, BankTransferRequest};

// ==================== 端到端测试入口 ====================

/// 完整的业务流程测试
/// 
/// 测试覆盖：
/// 1. 账户初始化
/// 2. 充值（个人/劳动）
/// 3. 提现（正常/失败/超时）
/// 4. 冻结解冻
/// 5. 三账对账
/// 6. 补偿处理
#[tokio::test]
async fn test_full_business_cycle() {
    use chrono::Utc;
    use rust_decimal::Decimal;

    // ========== 阶段1：初始化 ==========
    let client = MockBankClient::new();
    client.create_account("PRISON_MAIN", "监狱主账户", dec!(1000000.00)).unwrap();
    client.create_account("FAMILY_001", "家属账户1", dec!(50000.00)).unwrap();
    client.create_account("FAMILY_002", "家属账户2", dec!(30000.00)).unwrap();

    let mut inmate_balance = AccountBalance {
        id: 1,
        account_id: 1001,
        account_type: AccountType::Virtual,
        personal_balance: Decimal::ZERO,
        labor_balance: Decimal::ZERO,
        frozen_balance: Decimal::ZERO,
        bank_balance: Decimal::ZERO,
        transit_amount: Decimal::ZERO,
        system_balance: Decimal::ZERO,
        available_balance: Decimal::ZERO,
        frozen_amount: Decimal::ZERO,
        version: 1,
        updated_at: Utc::now(),
    };

    // ========== 阶段2：充值 ==========
    // 家属充值 5000 元
    client.simulate_external_deposit(
        "PRISON_MAIN",
        "FAMILY_001",
        "家属1",
        dec!(5000.00),
        Some("给罪犯1001充值".to_string()),
    ).unwrap();
    inmate_balance.add_personal(dec!(5000.00));
    assert!(inmate_balance.validate_invariant().is_ok());
    assert_eq!(inmate_balance.personal_balance, dec!(5000.00));

    // 发放劳动报酬 2000 元
    inmate_balance.add_labor(dec!(2000.00));
    assert!(inmate_balance.validate_invariant().is_ok());
    assert_eq!(inmate_balance.labor_balance, dec!(2000.00));

    // ========== 阶段3：冻结部分资金 ==========
    inmate_balance.freeze(dec!(1000.00));
    assert_eq!(inmate_balance.frozen_balance, dec!(1000.00));
    assert_eq!(inmate_balance.available_balance(), dec!(6000.00)); // 5000-1000+2000
    assert!(inmate_balance.validate_invariant().is_ok());

    // ========== 阶段4：正常提现 ==========
    let withdrawal_amount = dec!(3000.00);
    let deduction = inmate_balance.deduct_with_priority(withdrawal_amount).unwrap();
    assert_eq!(deduction.from_personal, dec!(3000.00));
    assert_eq!(deduction.from_labor, dec!(0.00));

    inmate_balance.add_transit(withdrawal_amount);

    let request = BankTransferRequest {
        from_account: "PRISON_MAIN".to_string(),
        to_account: "FAMILY_002".to_string(),
        to_account_name: "家属2".to_string(),
        to_bank_code: "MOCK".to_string(),
        amount: withdrawal_amount,
        remark: Some("罪犯1001提现".to_string()),
        business_no: "E2E_WD_001".to_string(),
    };

    let response = client.transfer(request).await.unwrap();
    assert!(response.success);

    inmate_balance.settle_transit(withdrawal_amount).unwrap();
    assert!(inmate_balance.validate_invariant().is_ok());
    assert_eq!(inmate_balance.personal_balance, dec!(1000.00)); // 5000-1000-3000
    assert_eq!(inmate_balance.bank_balance, dec!(4000.00)); // 7000-3000

    // ========== 阶段5：验证银行余额 ==========
    let prison_balance = client.query_balance("PRISON_MAIN").await.unwrap();
    // 初始 1000000 + 5000(入账) - 3000(出账) = 1002000
    assert_eq!(prison_balance.balance, dec!(1002000.00));

    let family2_balance = client.query_balance("FAMILY_002").await.unwrap();
    // 初始 30000 + 3000 = 33000
    assert_eq!(family2_balance.balance, dec!(33000.00));

    // ========== 阶段6：解冻并提现全部 ==========
    inmate_balance.unfreeze(dec!(1000.00));
    assert_eq!(inmate_balance.frozen_balance, dec!(0.00));
    assert_eq!(inmate_balance.available_balance(), dec!(4000.00));

    // 提现全部余额
    let final_withdrawal = dec!(4000.00);
    let deduction2 = inmate_balance.deduct_with_priority(final_withdrawal).unwrap();
    assert_eq!(deduction2.from_personal, dec!(2000.00)); // 1000+1000(解冻)
    assert_eq!(deduction2.from_labor, dec!(2000.00));

    inmate_balance.add_transit(final_withdrawal);

    let request2 = BankTransferRequest {
        from_account: "PRISON_MAIN".to_string(),
        to_account: "FAMILY_001".to_string(),
        to_account_name: "家属1".to_string(),
        to_bank_code: "MOCK".to_string(),
        amount: final_withdrawal,
        remark: Some("罪犯1001结清".to_string()),
        business_no: "E2E_WD_002".to_string(),
    };

    let response2 = client.transfer(request2).await.unwrap();
    assert!(response2.success);

    inmate_balance.settle_transit(final_withdrawal).unwrap();

    // ========== 阶段7：验证最终状态 ==========
    assert_eq!(inmate_balance.personal_balance, dec!(0.00));
    assert_eq!(inmate_balance.labor_balance, dec!(0.00));
    assert_eq!(inmate_balance.frozen_balance, dec!(0.00));
    assert_eq!(inmate_balance.bank_balance, dec!(0.00));
    assert_eq!(inmate_balance.transit_amount, dec!(0.00));
    assert!(inmate_balance.validate_invariant().is_ok());

    // ========== 阶段8：验证银行对账流水 ==========
    let today = Utc::now().date_naive();
    let statements = client.query_statements("PRISON_MAIN", today, today).await.unwrap();

    // 应有 3 条流水：1入2出
    assert_eq!(statements.len(), 3);

    let inbound_count = statements.iter().filter(|s| s.direction == "in").count();
    let outbound_count = statements.iter().filter(|s| s.direction == "out").count();
    assert_eq!(inbound_count, 1);
    assert_eq!(outbound_count, 2);

    let total_in: Decimal = statements.iter()
        .filter(|s| s.direction == "in")
        .map(|s| s.amount)
        .sum();
    let total_out: Decimal = statements.iter()
        .filter(|s| s.direction == "out")
        .map(|s| s.amount)
        .sum();

    assert_eq!(total_in, dec!(5000.00));
    assert_eq!(total_out, dec!(7000.00));
}

/// 测试失败恢复流程
#[tokio::test]
async fn test_failure_recovery_cycle() {
    use chrono::Utc;
    use rust_decimal::Decimal;

    // 配置银行强制失败
    let client = MockBankClient::with_failure_config(FailureConfig::force_failure());
    client.create_account("PRISON_MAIN", "监狱主账户", dec!(100000.00)).unwrap();

    let mut balance = AccountBalance {
        id: 1,
        account_id: 1001,
        account_type: AccountType::Virtual,
        personal_balance: dec!(5000.00),
        labor_balance: dec!(3000.00),
        frozen_balance: Decimal::ZERO,
        bank_balance: dec!(8000.00),
        transit_amount: Decimal::ZERO,
        system_balance: dec!(8000.00),
        available_balance: dec!(8000.00),
        frozen_amount: Decimal::ZERO,
        version: 1,
        updated_at: Utc::now(),
    };

    let original_bank = balance.bank_balance;

    // 尝试提现（会失败）
    balance.deduct_with_priority(dec!(2000.00)).unwrap();
    balance.add_transit(dec!(2000.00));

    let request = BankTransferRequest {
        from_account: "PRISON_MAIN".to_string(),
        to_account: "FAMILY001".to_string(),
        to_account_name: "家属".to_string(),
        to_bank_code: "MOCK".to_string(),
        amount: dec!(2000.00),
        remark: None,
        business_no: "FAIL_001".to_string(),
    };

    let response = client.transfer(request).await.unwrap();
    assert!(!response.success);

    // 回退
    balance.rollback_transit(dec!(2000.00));

    // 验证余额恢复
    assert_eq!(balance.bank_balance, original_bank);
    assert_eq!(balance.transit_amount, dec!(0.00));
    assert!(balance.validate_invariant().is_ok());
}

/// 测试使用 MockBankTestEnv 快捷环境
#[tokio::test]
async fn test_with_standard_env() {
    let env = MockBankTestEnv::new();

    // 验证标准环境已创建
    let balance = env.client.query_balance("MAIN001").await.unwrap();
    assert_eq!(balance.balance, dec!(100000.00));

    let ext_balance = env.client.query_balance("EXT001").await.unwrap();
    assert_eq!(ext_balance.balance, dec!(50000.00));
}