using Data.SeaHavenIndustries;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using SeaHaven.DataServices.Implementation;
using Xunit;

namespace Api.SeaHavenIndustries.Tests;

public class WorkOrderDataServiceBatchingTests
{
    private static ApplicationDbContext NewContext()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        return new ApplicationDbContext(options);
    }

    private static async Task SeedAsync(ApplicationDbContext context)
    {
        context.Locations.Add(new Locations { Id = 100, Name = "Site A", Address1 = "1 Main St" });
        context.workOrders.AddRange(
            new WorkOrder { Id = 1, InternalWONumber = "WO-1", WorkerOrderTitle = "First", LocationId = 100 },
            new WorkOrder { Id = 2, InternalWONumber = "WO-2", WorkerOrderTitle = "Second", LocationId = 100 },
            new WorkOrder { Id = 3, InternalWONumber = "WO-3", WorkerOrderTitle = "Third", LocationId = 100 },
            new WorkOrder { Id = 4, InternalWONumber = "WO-T", WorkerOrderTitle = "Template", LocationId = 100, istemplate = true });
        await context.SaveChangesAsync();
    }

    [Fact]
    public async Task GetByRequestedIdsWithDetailsAsync_ReturnsResultsInInputOrder()
    {
        await using var context = NewContext();
        await SeedAsync(context);
        var service = new WorkOrderDataService(context);

        var result = await service.GetByRequestedIdsWithDetailsAsync(
            new[] { 3, 1, 2 },
            CancellationToken.None);

        result.Select(w => w.Id).Should().Equal(new[] { 3, 1, 2 });
    }

    [Fact]
    public async Task GetByRequestedIdsWithDetailsAsync_DeduplicatesIdsAndSkipsMissing()
    {
        await using var context = NewContext();
        await SeedAsync(context);
        var service = new WorkOrderDataService(context);

        var result = await service.GetByRequestedIdsWithDetailsAsync(
            new[] { 2, 2, 999, 1 },
            CancellationToken.None);

        result.Select(w => w.Id).Should().Equal(new[] { 2, 1 });
    }

    [Fact]
    public async Task GetByRequestedIdsWithDetailsAsync_ExcludesTemplatesAndEagerLoadsLocation()
    {
        await using var context = NewContext();
        await SeedAsync(context);
        var service = new WorkOrderDataService(context);

        var result = await service.GetByRequestedIdsWithDetailsAsync(
            new[] { 1, 4 },
            CancellationToken.None);

        result.Select(w => w.Id).Should().Equal(new[] { 1 });
        result.Single().Locations.Should().NotBeNull();
        result.Single().Locations!.Name.Should().Be("Site A");
    }

    [Fact]
    public async Task AddAuditLogsAsync_PersistsAllRowsInSingleSave()
    {
        await using var context = NewContext();
        await SeedAsync(context);
        var service = new WorkOrderDataService(context);

        await service.AddAuditLogsAsync(new[]
        {
            new WorkOrderAuditLog { WorkOrderId = 1, FieldName = "Dispatch", Action = "Dispatch" },
            new WorkOrderAuditLog { WorkOrderId = 2, FieldName = "Dispatch", Action = "Dispatch" }
        });

        context.WorkOrderAuditLogs.Should().HaveCount(2);
    }

    [Fact]
    public async Task GetByIdsOrderedAsync_PreservesInputOrderDeduplicatesAndSkipsMissing()
    {
        await using var context = NewContext();
        context.Vendors.AddRange(
            new Vendor { Id = 7, CompanyName = "V7", Email = "v7@x.io" },
            new Vendor { Id = 8, CompanyName = "V8", Email = "v8@x.io" });
        await context.SaveChangesAsync();
        var service = new VendorDataService(context);

        var result = await service.GetByIdsOrderedAsync(new[] { 8, 8, 7, 999 }, CancellationToken.None);

        result.Select(v => v.Id).Should().Equal(new[] { 8, 7 });
    }
}