using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using NT8.Core.Analytics;
using NT8.Core.Common.Models;
using NT8.Core.Intelligence;
using NT8.Core.Logging;

namespace NT8.Integration.Tests
{
    [TestClass]
    public class Phase5IntegrationTests
    {
        private BasicLogger _logger;

        [TestInitialize]
        public void TestInitialize()
        {
            _logger = new BasicLogger("Phase5IntegrationTests");
        }

        [TestMethod]
        public void EndToEnd_Recorder_ToReportGenerator_Works()
        {
            var recorder = new TradeRecorder(_logger);
            recorder.RecordEntry("T1", Intent(), Fill(1, 100), Score(), RiskMode.PCP);
            recorder.RecordExit("T1", Fill(1, 105));

            var trades = recorder.GetTrades(DateTime.UtcNow.AddHours(-1), DateTime.UtcNow.AddHours(1));
            var generator = new ReportGenerator(_logger);
            var daily = generator.GenerateDailyReport(DateTime.UtcNow, trades);

            Assert.IsNotNull(daily);
            Assert.IsTrue(daily.SummaryMetrics.TotalTrades >= 1);
        }

        [TestMethod]
        public void EndToEnd_Attribution_GradeAnalysis_Works()
        {
            var trades = Trades();
            var attributor = new PnLAttributor(_logger);
            var grade = attributor.AttributeByGrade(trades);

            var gradeAnalyzer = new GradePerformanceAnalyzer(_logger);
            var report = gradeAnalyzer.AnalyzeByGrade(trades);

            Assert.IsTrue(grade.Slices.Count > 0);
            Assert.IsTrue(report.MetricsByGrade.Count > 0);
        }

        [TestMethod]
        public void EndToEnd_Regime_Confluence_Works()
        {
            var trades = Trades();
            var regime = new RegimePerformanceAnalyzer(_logger).AnalyzeByRegime(trades);
            var weights = new ConfluenceValidator(_logger).RecommendWeights(trades);

            Assert.IsTrue(regime.CombinedMetrics.Count > 0);
            Assert.IsTrue(weights.Count > 0);
        }

        [TestMethod]
        public void EndToEnd_Optimization_MonteCarlo_Portfolio_Works()
        {
            var trades = Trades();
            var opt = new ParameterOptimizer(_logger);
            var single = opt.OptimizeParameter("x", new List<double> { 1, 2, 3 }, trades);

            var mc = new MonteCarloSimulator(_logger);
            var sim = mc.Simulate(trades, 50, 20);

            var po = new PortfolioOptimizer(_logger);
            var alloc = po.OptimizeAllocation(Strategies());

            Assert.IsNotNull(single);
            Assert.AreEqual(50, sim.FinalPnLDistribution.Count);
            Assert.IsTrue(alloc.Allocation.Count > 0);
        }

        [TestMethod]
        public void EndToEnd_Blotter_FilterSort_Works()
        {
            var blotter = new TradeBlotter(_logger);
            blotter.SetTrades(Trades());

            var bySymbol = blotter.FilterBySymbol("ES");
            var sorted = blotter.SortBy("pnl", SortDirection.Desc);

            Assert.IsTrue(bySymbol.Count > 0);
            Assert.IsTrue(sorted.Count > 0);
        }

        [TestMethod]
        public void EndToEnd_DrawdownAnalysis_Works()
        {
            var analyzer = new DrawdownAnalyzer(_logger);
            var report = analyzer.Analyze(Trades());
            Assert.IsNotNull(report);
        }

        [TestMethod]
        public void EndToEnd_ReportExports_Works()
        {
            var generator = new ReportGenerator(_logger);
            var daily = generator.GenerateDailyReport(DateTime.UtcNow, Trades());
            var text = generator.ExportToText(daily);
            var json = generator.ExportToJson(daily);
            var csv = generator.ExportToCsv(Trades());

            Assert.IsTrue(text.Length > 0);
            Assert.IsTrue(json.Length > 0);
            Assert.IsTrue(csv.Length > 0);
        }

        [TestMethod]
        public void EndToEnd_EquityCurve_Works()
        {
            var curve = new ReportGenerator(_logger).BuildEquityCurve(Trades());
            Assert.IsTrue(curve.Points.Count > 0);
        }

        [TestMethod]
        public void EndToEnd_RiskOfRuin_Works()
        {
            var ror = new MonteCarloSimulator(_logger).CalculateRiskOfRuin(Trades(), 30.0);
            Assert.IsTrue(ror >= 0.0 && ror <= 1.0);
        }

        [TestMethod]
        public void EndToEnd_TransitionAnalysis_Works()
        {
            var impacts = new RegimePerformanceAnalyzer(_logger).AnalyzeTransitions(Trades());
            Assert.IsNotNull(impacts);
        }

        private static StrategyIntent Intent()
        {
            return new StrategyIntent("ES", OrderSide.Buy, OrderType.Market, null, 8, 16, 0.8, "test", new Dictionary<string, object>());
        }

        private static ConfluenceScore Score()
        {
            return new ConfluenceScore(0.7, 0.7, TradeGrade.B, new List<ConfluenceFactor>(), DateTime.UtcNow, new Dictionary<string, object>());
        }

        private static OrderFill Fill(int qty, double price)
        {
            return new OrderFill("O1", "ES", qty, price, DateTime.UtcNow, 1.0, Guid.NewGuid().ToString());
        }

        private static List<TradeRecord> Trades()
        {
            var list = new List<TradeRecord>();
            for (var i = 0; i < 20; i++)
            {
                var t = new TradeRecord();
                t.TradeId = i.ToString();
                t.Symbol = "ES";
                t.StrategyName = i % 2 == 0 ? "S1" : "S2";
                t.EntryTime = DateTime.UtcNow.Date.AddMinutes(i * 10);
                t.ExitTime = t.EntryTime.AddMinutes(5);
                t.Side = OrderSide.Buy;
                t.Quantity = 1;
                t.EntryPrice = 100;
                t.ExitPrice = 101;
                t.RealizedPnL = i % 3 == 0 ? -10 : 15;
                t.Grade = i % 2 == 0 ? TradeGrade.A : TradeGrade.B;
                t.RiskMode = RiskMode.PCP;
                t.VolatilityRegime = i % 2 == 0 ? VolatilityRegime.Normal : VolatilityRegime.Elevated;
                t.TrendRegime = i % 2 == 0 ? TrendRegime.StrongUp : TrendRegime.Range;
                t.StopTicks = 8;
                t.TargetTicks = 16;
                t.RMultiple = t.RealizedPnL / 8.0;
                t.Duration = TimeSpan.FromMinutes(5);
                list.Add(t);
            }

            return list;
        }

        private static List<StrategyPerformance> Strategies()
        {
            var a = new StrategyPerformance();
            a.StrategyName = "S1";
            a.MeanReturn = 1.2;
            a.StdDevReturn = 0.9;
            a.Sharpe = 1.3;
            a.Correlations.Add("S2", 0.3);

            var b = new StrategyPerformance();
            b.StrategyName = "S2";
            b.MeanReturn = 1.0;
            b.StdDevReturn = 0.8;
            b.Sharpe = 1.25;
            b.Correlations.Add("S1", 0.3);

            return new List<StrategyPerformance> { a, b };
        }
    }
}