using FluentAssertions;
using foodmarket.Api.Background;
using foodmarket.Domain.Organizations;
using foodmarket.Infrastructure.Persistence;
using foodmarket.IntegrationTests.Support;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging.Abstractions;
using Xunit;

namespace foodmarket.IntegrationTests;

/// <summary>Sprint 28: тест для <see cref="HousekeepingJobs.PruneQualityTestOrgsAsync"/>
/// (введён в Sprint 25). Требует реальный PostgreSQL — метод использует
/// information_schema + DO $$ блоки, которых нет в SQLite.
///
/// Проверяет:
///  - Только org'и с именем <c>quality-%</c> старше N часов удаляются.
///  - Свежие <c>quality-*</c> не трогаются.
///  - Не-quality org'и (включая <c>Test-*</c>, реальные имена) не трогаются.
///  - FK-loop ретрая работает (нет foreign_key_violation при множественных
///    зависимостях employees ↔ employee_roles).
/// </summary>
[Collection(ApiCollection.Name)]
public class PruneQualityTestOrgsTests
{
    private readonly ApiFactory _factory;
    public PruneQualityTestOrgsTests(ApiFactory factory) => _factory = factory;

    private static IConfiguration CfgWith(int hours) =>
        new ConfigurationBuilder().AddInMemoryCollection(new Dictionary<string, string?>
        {
            ["Cleanup:QualityTestOrgHours"] = hours.ToString(),
        }).Build();

    [Fact]
    public async Task Deletes_only_quality_orgs_older_than_threshold()
    {
        using var scope = _factory.Services.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();

        // Сетап: 4 org'и — quality-old (старая), quality-new (свежая),
        // real-old (реальное имя, не трогаем), quality-edge (на грани).
        var oldQuality = new Organization
        {
            Id = Guid.NewGuid(),
            Name = "quality-old-test-1",
            CreatedAt = DateTime.UtcNow.AddHours(-48),
        };
        var newQuality = new Organization
        {
            Id = Guid.NewGuid(),
            Name = "quality-new-test-2",
            CreatedAt = DateTime.UtcNow.AddMinutes(-30),
        };
        var realOld = new Organization
        {
            Id = Guid.NewGuid(),
            Name = "Real Shop LLC",
            CreatedAt = DateTime.UtcNow.AddDays(-30),
        };
        var edge = new Organization
        {
            Id = Guid.NewGuid(),
            Name = "quality-edge-test-3",
            // На самой границе threshold (24h) с небольшим запасом.
            CreatedAt = DateTime.UtcNow.AddHours(-25),
        };

        db.Organizations.AddRange(oldQuality, newQuality, realOld, edge);
        await db.SaveChangesAsync();

        // Threshold = 24 часа.
        var jobs = new HousekeepingJobs(db, CfgWith(hours: 24), NullLogger<HousekeepingJobs>.Instance);
        var deleted = await jobs.PruneQualityTestOrgsAsync();

        // Удалены должны быть oldQuality + edge (24h+ старые с quality-* префиксом).
        deleted.Should().Be(2);

        using var scope2 = _factory.Services.CreateScope();
        var db2 = scope2.ServiceProvider.GetRequiredService<AppDbContext>();
        var remaining = await db2.Organizations
            .IgnoreQueryFilters()
            .Where(o => new[] { oldQuality.Id, newQuality.Id, realOld.Id, edge.Id }.Contains(o.Id))
            .Select(o => o.Name)
            .ToListAsync();

        remaining.Should().Contain("quality-new-test-2", "свежий quality-* не удаляется");
        remaining.Should().Contain("Real Shop LLC", "реальная org не удаляется");
        remaining.Should().NotContain("quality-old-test-1", "старая quality-* удалена");
        remaining.Should().NotContain("quality-edge-test-3", "edge-старше-threshold удалена");
    }

    [Fact]
    public async Task Returns_zero_when_no_candidates_match()
    {
        using var scope = _factory.Services.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();

        // Только свежая quality-* — она НЕ должна удаляться.
        var fresh = new Organization
        {
            Id = Guid.NewGuid(),
            Name = $"quality-fresh-{Guid.NewGuid():N}",
            CreatedAt = DateTime.UtcNow,
        };
        db.Organizations.Add(fresh);
        await db.SaveChangesAsync();

        var jobs = new HousekeepingJobs(db, CfgWith(hours: 24), NullLogger<HousekeepingJobs>.Instance);
        var deleted = await jobs.PruneQualityTestOrgsAsync();

        deleted.Should().Be(0);

        using var scope2 = _factory.Services.CreateScope();
        var db2 = scope2.ServiceProvider.GetRequiredService<AppDbContext>();
        var stillExists = await db2.Organizations
            .IgnoreQueryFilters()
            .AnyAsync(o => o.Id == fresh.Id);
        stillExists.Should().BeTrue();
    }
}