using System;
using System.Collections.Generic;
using ExperionCrawler.Core.Application.Feedforward;
using ExperionCrawler.Infrastructure.Control;
using Xunit;

namespace ExperionCrawler.Tests;

// 온도 HIGH LIMIT(raw, UI 설정) → 전환류 트리거(단독 severe). 코러보 불요.
public class FeedforwardTempHighLimitTests
{
    private static ColumnConfig Cfg(double tempHigh) => new()
    {
        Id = 1, Name = "C-TH", Enabled = true, FeedTag = "f", ProductKey = "P", ScanSec = 2,
        PressureTag = null, FeedMoveThresholdPerMin = 0.0,
        RecoveryEnabled = true, RecoveryAutoArm = true,        // 자동무장(테스트 간소화)
        ImbalanceTriggerFrac = 0.10, ImbalanceTriggerSec = 4,  // 짧게
        TempHighLimit = tempHigh,
        TempTags = new[] { "a", "b", "c", "d" },
        Streams = new[] { new StreamConfig { Key = "P", FlowTag = "ficq-6118", Role = StreamRole.Commanded, Grade = Confidence.A, TargetCoeff = 0.95 } }
    };

    private static PvSnapshot Snap(double maxTemp) => new(
        new TagSample("f", 100, true, DateTime.UtcNow), null, Array.Empty<TagSample>(),
        new Dictionary<string, TagSample> { ["P"] = new TagSample("ficq-6118", 95, true, DateTime.UtcNow) })
        {
            Temps = new[]
            {
                new TagSample("a", maxTemp, true, DateTime.UtcNow), new TagSample("b", maxTemp - 5, true, DateTime.UtcNow),
                new TagSample("c", maxTemp - 10, true, DateTime.UtcNow), new TagSample("d", maxTemp - 20, true, DateTime.UtcNow)
            }
        };

    [Fact]
    public void Temp_above_high_limit_triggers_recovery_standalone()
    {
        var engine = new FeedforwardEngine(); var st = new ColumnState();
        var cfg = Cfg(tempHigh: 120);   // 한계 120
        AdvisoryResult res = null!; string entryReason = "";
        // 최고온도 130 > 120, 다른 신호(vloss/ΔP) 없음에도 지속 시 단독 트리거.
        // 진입 틱의 사유에 "온도HIGH" 표기(이후 틱은 평형대기).
        for (int i = 0; i < 5; i++)
        {
            res = engine.Tick(cfg, Snap(130), st, DateTime.UtcNow);
            if (res.Mode == ColumnMode.Recovering && (res.ModeReason ?? "").Contains("진입")) entryReason = res.ModeReason!;
        }
        Assert.Equal(ColumnMode.Recovering, res.Mode);
        Assert.Contains("온도HIGH", entryReason);
    }

    [Fact]
    public void Temp_below_limit_no_trigger()
    {
        var engine = new FeedforwardEngine(); var st = new ColumnState();
        var cfg = Cfg(tempHigh: 120);
        AdvisoryResult res = null!;
        for (int i = 0; i < 6; i++) res = engine.Tick(cfg, Snap(110), st, DateTime.UtcNow);   // 110 < 120
        Assert.Equal(ColumnMode.Normal, res.Mode);
    }

    [Fact]
    public void Default_limit_disabled()
    {
        var engine = new FeedforwardEngine(); var st = new ColumnState();
        var cfg = Cfg(tempHigh: double.MaxValue);   // 기본=비활성
        AdvisoryResult res = null!;
        for (int i = 0; i < 6; i++) res = engine.Tick(cfg, Snap(500), st, DateTime.UtcNow);   // 매우 높아도
        Assert.Equal(ColumnMode.Normal, res.Mode);
    }
}