using Admin.NET.Plugin.AiDOP.Dto.SmartOps;
using Admin.NET.Plugin.AiDOP.Entity;
using Admin.NET.Plugin.AiDOP.SmartOps;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.SmartOps;

public class KpiTargetServiceTests
{
    private static KpiTargetService Svc(FakeKpiTargetStore store)
    {
        store.Kpis.Add(new AdoSmartOpsKpiMaster { TenantId = 9, MetricCode = "S1_L1_001", ModuleCode = "S1", IsEnabled = true });
        var resolver = new KpiTargetResolver(store, new LegacyKpiTargetProvider(new FakeDailyReader(), new Microsoft.Extensions.Logging.Abstractions.NullLogger<LegacyKpiTargetProvider>()), new Microsoft.Extensions.Logging.Abstractions.NullLogger<KpiTargetResolver>());
        return new KpiTargetService(store, resolver, null!);
    }

    [Fact]
    public void Overlap_InclusiveBounds()
    {
        Assert.True(KpiTargetRules.Overlaps(new DateTime(2026, 1, 1), new DateTime(2026, 1, 31), new DateTime(2026, 1, 31), null));
        Assert.False(KpiTargetRules.Overlaps(new DateTime(2026, 1, 1), new DateTime(2026, 1, 30), new DateTime(2026, 1, 31), null));
    }

    [Fact]
    public async Task Create_RejectsNonPositive()
    {
        var svc = Svc(new FakeKpiTargetStore());
        await Assert.ThrowsAsync<KpiTargetValidationException>(() => svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 0, EffectiveFrom = new DateTime(2026, 9, 1)
        }, KpiTargetConfigSource.Manual, null, 1));
    }

    [Fact]
    public async Task Create_RejectsCrossTenantMetric()
    {
        var svc = Svc(new FakeKpiTargetStore());
        await Assert.ThrowsAsync<KpiTargetNotFoundException>(() => svc.CreateCoreAsync(99, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 3, EffectiveFrom = new DateTime(2026, 9, 1)
        }, KpiTargetConfigSource.Manual, null, 1));
    }

    [Fact]
    public async Task Create_RejectsOverlap()
    {
        var store = new FakeKpiTargetStore();
        var svc = Svc(store);
        await svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 3, EffectiveFrom = new DateTime(2026, 9, 1)
        }, KpiTargetConfigSource.Manual, null, 1);
        await Assert.ThrowsAsync<KpiTargetConflictException>(() => svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 4, EffectiveFrom = new DateTime(2026, 9, 15)
        }, KpiTargetConfigSource.Manual, null, 1));
    }

    [Fact]
    public async Task Create_ClosePrevious_AllowsFuture()
    {
        var store = new FakeKpiTargetStore();
        var svc = Svc(store);
        await svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 3, EffectiveFrom = new DateTime(2026, 1, 1)
        }, KpiTargetConfigSource.Manual, null, 1);
        var next = await svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 4, EffectiveFrom = new DateTime(2026, 9, 1), ClosePrevious = true
        }, KpiTargetConfigSource.Manual, null, 1);
        Assert.Equal(4m, next.TargetValue);
        Assert.Equal(new DateTime(2026, 8, 31), store.Configs[0].EffectiveTo);
    }

    [Fact]
    public async Task Update_EffectiveTargetValue_Rejected()
    {
        var store = new FakeKpiTargetStore();
        var svc = Svc(store);
        var created = await svc.CreateCoreAsync(9, new KpiTargetCreateDto
        {
            MetricCode = "S1_L1_001", FactoryId = 1, TargetValue = 3, EffectiveFrom = DateTime.Today.AddDays(-1)
        }, KpiTargetConfigSource.Manual, null, 1);
        await Assert.ThrowsAsync<KpiTargetConflictException>(() => svc.UpdateCoreAsync(9, created.Id, new KpiTargetUpdateDto { TargetValue = 9 }));
    }
}