using Newtonsoft.Json;
using YLErp.DBModels;
using YLErp.DBModels.Enums;

namespace YLErp.Modules.SwapModule
{
    /// <summary>
    /// ClearSwapPositions 重收盘清理 - 合成单元测试
    /// ============================================================================
    /// 验证 78751f0a 的核心修复：重收盘清理自动互换资金记录时，
    /// 正确排除手动互换的资金记录（manualClientCashIds）。
    ///
    /// 核心方法：GetLegacyAutoSwapClientCashRecords（SwapTradeBaseService）
    /// 它接收自动互换事件列表，返回应该删除的资金记录。
    /// 关键逻辑：cs:491 !manualClientCashIds.Contains(x.id) 排除手动互换的记录。
    /// ============================================================================
    [TestClass]
    public class ClearSwapPositionsScenarioTest
    {
        private const int TradeId = 300;

        #region Stub

        private sealed class StubService : TestableSwapEodPositionService
        {
            // 注入的内存数据
            public List<swap_flow_event> FlowEvents { get; set; } = new();
            public List<swap_event> SwapEvents { get; set; } = new();
            public List<ClientCashInCashOut> CashRecords { get; set; } = new();

            public List<ClientCashInCashOut> DeletedRecords { get; } = new();

            public StubService() : base(nameof(ClearSwapPositionsScenarioTest))
            {
            }

            // override GetLegacyAutoSwapClientCashRecords 的内部依赖
            protected override List<swap_flow_event> FindFlowEventsByEventIds(List<long> eventIds)
            {
                return FlowEvents.Where(x => x.EventId.HasValue && eventIds.Contains(x.EventId.Value)).ToList();
            }

            protected override List<int> FindManualClientCashIds(int swapTradeId)
            {
                return SwapEvents
                    .Where(x => x.SwapTradeId == swapTradeId
                             && x.ClientCashId > 0
                             && x.EventType != (int)SwapEventTypeEnum.自动互换)
                    .Select(x => x.ClientCashId)
                    .ToList();
            }

            protected override List<ClientCashInCashOut> FindClientCashRecords(int tradeId)
            {
                return CashRecords.Where(x => x.TradeId == tradeId).ToList();
            }

            // public 包装
            public List<ClientCashInCashOut> ExecuteGetLegacyAutoSwapClientCashRecords(
                List<swap_event> swapEvents, List<int> excludedClientCashIds)
            {
                return GetLegacyAutoSwapClientCashRecords(swapEvents, excludedClientCashIds);
            }
        }

        #endregion

        #region 数据构建

        private static swap_event CreateAutoSwapEvent(long id, DateTime valueDate, params int[] cashIds)
        {
            // SwapRealizedPnL=-100 匹配 Money=100（IsLegacyAutoSwapClientCashRecord 按金额校验）
            var data = new UnwindData
            {
                SwapTradeId = TradeId, ValueDate = valueDate,
                ClientCashIds = cashIds.ToList(),
                SwapRealizedPnL = -100m  // -Money → IsLegacyAutoSwapClientCashRecord 匹配
            };
            return new swap_event
            {
                id = id, SwapTradeId = TradeId, EventType = (int)SwapEventTypeEnum.自动互换,
                ValueDate = valueDate, ClientCashId = cashIds.FirstOrDefault(),
                EventData = JsonConvert.SerializeObject(data)
            };
        }

        private static swap_event CreateManualSwapEvent(long id, DateTime valueDate, int clientCashId)
        {
            return new swap_event
            {
                id = id, SwapTradeId = TradeId, EventType = (int)SwapEventTypeEnum.互换,
                ValueDate = valueDate, ClientCashId = clientCashId,
                EventData = JsonConvert.SerializeObject(new UnwindData { SwapTradeId = TradeId, ValueDate = valueDate })
            };
        }

        private static ClientCashInCashOut CreateCashRecord(int id, string action, DateTime happenDate, double money = 100)
        {
            return new ClientCashInCashOut
            {
                id = id, TradeId = TradeId, Action = action,
                HappenDate = happenDate, Money = money,
                State = ClientCashInCashOut.已确认, ValidState = "Valid"
            };
        }

        #endregion

        // ================================================================
        // 场景1：自动互换资金记录被正确选中删除
        // ================================================================

        /// <summary>
        /// [CSW_001] 只有一条自动互换资金记录 → 应被选中删除
        /// ---------------------------------------------------------------
        /// 构造1条自动互换事件(EventData含ClientCashIds)，
        /// 1条资金记录(Action=系统操作-互换)。
        /// GetLegacyAutoSwapClientCashRecords 应返回这条资金记录。
        /// </summary>
        [TestMethod]
        public void CSW_001_自动互换资金记录被选中删除()
        {
            var date = new DateTime(2026, 6, 29);
            var service = new StubService();

            // 不含ClientCashIds → 走legacy路径
            var autoEvent = CreateAutoSwapEvent(id: 5001, valueDate: date);
            service.SwapEvents.Add(autoEvent);

            var cashRecord = CreateCashRecord(id: 7001, action: ClientCashInCashOut.系统操作_互换, happenDate: date);
            service.CashRecords.Add(cashRecord);

            var result = service.ExecuteGetLegacyAutoSwapClientCashRecords(
                new List<swap_event> { autoEvent }, excludedClientCashIds: new List<int>());

            Assert.AreEqual(1, result.Count, "应选中1条自动互换资金记录");
            Assert.AreEqual(7001, result[0].id, "选中的应是id=7001");
            Console.WriteLine($"自动互换资金记录(id=7001)被正确选中 ✅");
        }

        // ================================================================
        // 场景2：手动互换资金记录被排除（78751f0a 核心修复）
        // ================================================================

        /// <summary>
        /// [CSW_002] 手动互换资金记录不被选中（manualClientCashIds排除）
        /// ---------------------------------------------------------------
        /// 构造1条自动互换事件 + 1条手动互换事件(ClientCashId=8001)。
        /// 2条资金记录都是Action=系统操作-互换，但1条属于手动(id=8001)。
        /// GetLegacyAutoSwapClientCashRecords 应只返回自动的那条，排除手动的。
        /// </summary>
        [TestMethod]
        public void CSW_002_手动互换资金记录被排除()
        {
            var date = new DateTime(2026, 6, 29);
            var service = new StubService();

            // 自动互换事件（无ClientCashIds，走legacy路径）
            var autoEvent = CreateAutoSwapEvent(id: 5001, valueDate: date);
            // 手动互换事件（ClientCashId=8001）
            var manualEvent = CreateManualSwapEvent(id: 5002, valueDate: date, clientCashId: 8001);
            service.SwapEvents.Add(autoEvent);
            service.SwapEvents.Add(manualEvent);

            // 两条资金记录都是系统操作-互换
            var autoCash = CreateCashRecord(id: 7001, action: ClientCashInCashOut.系统操作_互换, happenDate: date);
            var manualCash = CreateCashRecord(id: 8001, action: ClientCashInCashOut.系统操作_互换, happenDate: date);
            service.CashRecords.Add(autoCash);
            service.CashRecords.Add(manualCash);

            var result = service.ExecuteGetLegacyAutoSwapClientCashRecords(
                new List<swap_event> { autoEvent }, excludedClientCashIds: new List<int>());

            // 应只返回自动的(7001)，排除手动的(8001)
            Assert.AreEqual(1, result.Count, "应只选中1条（排除手动的）");
            Assert.AreEqual(7001, result[0].id, "选中的应是自动的id=7001");
            Assert.IsFalse(result.Any(x => x.id == 8001), "手动互换(id=8001)不应被选中");
            Console.WriteLine($"手动互换资金记录(id=8001)被正确排除 ✅");
        }

        // ================================================================
        // 场景3：excludedClientCashIds 排除已处理的记录
        // ================================================================

        /// <summary>
        /// [CSW_003] 已在excludedClientCashIds中的记录不被重复选中
        /// ---------------------------------------------------------------
        /// 资金记录id=7001已在excludedClientCashIds中（之前已处理过），
        /// 不应再次被选中。
        /// </summary>
        [TestMethod]
        public void CSW_003_已处理的记录不重复选中()
        {
            var date = new DateTime(2026, 6, 29);
            var service = new StubService();

            var autoEvent = CreateAutoSwapEvent(id: 5001, valueDate: date);
            service.SwapEvents.Add(autoEvent);

            var cash1 = CreateCashRecord(id: 7001, action: ClientCashInCashOut.系统操作_互换, happenDate: date);
            var cash2 = CreateCashRecord(id: 7002, action: ClientCashInCashOut.系统操作_互换, happenDate: date);
            service.CashRecords.Add(cash1);
            service.CashRecords.Add(cash2);

            // 7001 已在 excludedClientCashIds 中
            var result = service.ExecuteGetLegacyAutoSwapClientCashRecords(
                new List<swap_event> { autoEvent }, excludedClientCashIds: new List<int> { 7001 });

            Assert.AreEqual(1, result.Count, "应只选中1条（排除已处理的7001）");
            Assert.AreEqual(7002, result[0].id, "选中的应是未处理的7002");
            Console.WriteLine($"已处理记录(7001)被排除，只选中7002 ✅");
        }

        // ================================================================
        // 场景4：预付金返息记录也被正确处理
        // ================================================================

        /// <summary>
        /// [CSW_004] 预付金返息记录(Action=系统操作-预付金返息)也参与清理
        /// ---------------------------------------------------------------
        /// 自动互换产生的预付金返息记录应被选中，手动的不应被选中。
        /// </summary>
        [TestMethod]
        public void CSW_004_预付金返息记录参与清理()
        {
            var date = new DateTime(2026, 6, 29);
            var service = new StubService();

            var autoEvent = CreateAutoSwapEvent(id: 5001, valueDate: date);
            // 预付金返息匹配 SwapMarginRebatePnl，覆盖默认的 SwapRealizedPnL
            var autoData = JsonConvert.DeserializeObject<UnwindData>(autoEvent.EventData);
            autoData.SwapMarginRebatePnl = -100m;
            autoData.SwapRealizedPnL = 0m;
            autoEvent.EventData = JsonConvert.SerializeObject(autoData);
            var manualEvent = CreateManualSwapEvent(id: 5002, valueDate: date, clientCashId: 8001);
            service.SwapEvents.Add(autoEvent);
            service.SwapEvents.Add(manualEvent);

            // 预付金返息记录
            var autoRebate = CreateCashRecord(id: 7001, action: ClientCashInCashOut.系统操作_预付金返息, happenDate: date);
            var manualRebate = CreateCashRecord(id: 8001, action: ClientCashInCashOut.系统操作_预付金返息, happenDate: date);
            service.CashRecords.Add(autoRebate);
            service.CashRecords.Add(manualRebate);

            var result = service.ExecuteGetLegacyAutoSwapClientCashRecords(
                new List<swap_event> { autoEvent }, excludedClientCashIds: new List<int>());

            Assert.AreEqual(1, result.Count, "应只选中1条预付金返息（排除手动的）");
            Assert.AreEqual(7001, result[0].id, "选中的应是自动的预付金返息7001");
            Console.WriteLine($"预付金返息: 自动的(7001)被选中, 手动的(8001)被排除 ✅");
        }
    }
}