using System;
using System.Data;
using Microsoft.EntityFrameworkCore;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using YLErp.DBModels;

namespace YLErp.Modules.SwapModule
{
    /// <summary>
    /// EQD-6968 UAT 辅助：从 96 真实库抽取"在途 FR007 互换"具体历史交易，
    /// 打印完整交易要素，供 UAT 直接选用（替代手动猜要素）。
    /// 标 [Ignore]，手动跑一次即可；依赖 app.config 中 xray 连接（你的环境已指向 96）。
    /// 复用 GLMS20260105GoldenTest 的连库写法：DbContextFactory.GetYLDbContext()。
    /// 用原生 ADO.NET 读结果，规避 EF 实体映射类型踩坑。
    /// </summary>
    [TestClass]
    public class GLMS20260819Fr007TradeDiscoveryTest
    {
        private const string TradeSql = @"
SELECT
    t.id                                                              AS TradeId,
    p.id                                                              AS PositionId,
    t.TradeNumber                                                     AS TradeNumber,
    t.StartDate                                                       AS StartDate,
    t.ExerciseDate                                                    AS ExerciseDate,
    t.ValidState                                                      AS ValidState,
    p.interest_rest_days                                              AS interest_rest_days,
    p.interest_rule                                                   AS interest_rule,
    p.FloatRateUnderlyingCode                                         AS FloatRateUnderlyingCode,
    p.IsInitial                                                       AS IsInitial,
    p.InterestType                                                    AS InterestType,
    p.InterestMode                                                    AS InterestMode,
    CASE WHEN te.ExtendJson LIKE '%""InterestCalcMode""%'
         THEN SUBSTRING_INDEX(SUBSTRING_INDEX(te.ExtendJson, '""InterestCalcMode"":""', -1), '""', 1)
         ELSE '11' END                                               AS InterestCalcMode
FROM      trade         t
JOIN      swap_position p  ON p.SwapTradeId = t.id
LEFT JOIN trade_extend te  ON te.TradeId    = t.id
WHERE     t.ValidState = 'Valid'
  AND     p.Invalid    = 0
  AND     p.IsInitial  = 1
  AND     p.FloatRateUnderlyingCode = 'FR007'
  AND     t.ExerciseDate >= CURDATE()
ORDER BY t.StartDate;";

        private const string FixingSql = @"
SELECT ValueDate, ReferencePrice
FROM   eod_commodity_future_price
WHERE  FutureContractId = 'FR007'
  AND  ValueDate >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
ORDER BY ValueDate DESC;";

        private TestContext _testContext;
        public TestContext TestContext
        {
            get => _testContext;
            set => _testContext = value;
        }

        private static string Fmt(object v) =>
            v == null || v == DBNull.Value ? "NULL"
            : (v is DateTime dt ? dt.ToString("yyyy-MM-dd") : v.ToString());

        [TestMethod]
        [Ignore]
        [TestCategory("Discovery")]
        public void Discover_InTransitFr007Trades()
        {
            using (var db = DbContextFactory.GetYLDbContext())
            {
                var conn = db.Database.GetDbConnection();
                if (conn.State != ConnectionState.Open) conn.Open();
                using (var cmd = conn.CreateCommand())
                {
                    cmd.CommandText = TradeSql;
                    using (var reader = cmd.ExecuteReader())
                    {
                        int n = 0;
                        while (reader.Read())
                        {
                            n++;
                            TestContext.WriteLine(
                                $"TradeId={reader["TradeId"]} PosId={reader["PositionId"]} No={reader["TradeNumber"]} " +
                                $"Start={Fmt(reader["StartDate"])} Expr={Fmt(reader["ExerciseDate"])} " +
                                $"CalcMode={Fmt(reader["InterestCalcMode"])} rule={Fmt(reader["interest_rule"])} rest={Fmt(reader["interest_rest_days"])} " +
                                $"IntType={Fmt(reader["InterestType"])} Mode={Fmt(reader["InterestMode"])}");
                        }
                        TestContext.WriteLine($"=== 在途 FR007 互换共 {n} 笔 ===");
                    }
                }
            }
        }

        [TestMethod]
        [Ignore]
        [TestCategory("Discovery")]
        public void Discover_Fr007FixingStatus()
        {
            using (var db = DbContextFactory.GetYLDbContext())
            {
                var conn = db.Database.GetDbConnection();
                if (conn.State != ConnectionState.Open) conn.Open();
                using (var cmd = conn.CreateCommand())
                {
                    cmd.CommandText = FixingSql;
                    using (var reader = cmd.ExecuteReader())
                    {
                        int n = 0;
                        while (reader.Read())
                        {
                            n++;
                            TestContext.WriteLine($"FR007 ValueDate={Fmt(reader["ValueDate"])} ReferencePrice={Fmt(reader["ReferencePrice"])}");
                        }
                        TestContext.WriteLine($"=== FR007 定盘近 30 天共 {n} 条 ===");
                    }
                }
            }
        }
    }
}