using System.Text.Json;
using Microsoft.Extensions.DependencyInjection;
using Moq;
using Shouldly;
using Tnsu.ApprovalRoute.Application.BasisRequests;
using Tnsu.ApprovalRoute.Application.ListPartitioning;
using Tnsu.ApprovalRoute.Application.RequestTypes;
using Tnsu.ApprovalRoute.Infrastructure.Persistence;
using Tnsu.ApprovalRoute.Infrastructure.SharePoint;
using Tnsu.ApprovalRoute.IntegrationTests.Infrastructure;

namespace Tnsu.ApprovalRoute.IntegrationTests.ApplicationServices;

/// <summary>
/// Заявки по одному основанию: видны все (чтение от имени приложения), а
/// CanOpen — только там, где у вызывающего есть права на элемент.
/// </summary>
public sealed class BasisRequestsServiceTests : IClassFixture<PostgresDatabaseFixture>
{
    private const string SiteUrl = "https://tnsukz.sharepoint.com/sites/requests";
    private const string CallerEmail = "initiator@tnsu.kz";
    private const string BasisKey = "need:8028c7ac-ac23-8dd8-11f0-946facc42464";

    private readonly ServiceProvider _services;

    public BasisRequestsServiceTests(PostgresDatabaseFixture fixture)
    {
        _services = TestServiceProviderFactory.Build(fixture.ConnectionString, CallerEmail);
    }

    private static JsonElement Json(object value) => JsonSerializer.SerializeToElement(value);

    private async Task<(BasisRequestsService Service, Mock<ISharePointClient> SharePoint, int TypeId)> BuildAsync(
        string name, string listUrl, IReadOnlyList<object> items, IReadOnlySet<int> openableIds)
    {
        var type = await _services.GetRequiredService<RequestTypeService>().CreateAsync(
            new CreateRequestTypeRequest($"Оплата {name}", $"/оплата-{name}", listUrl, SiteUrl, "General"),
            CancellationToken.None);

        var sharePoint = new Mock<ISharePointClient>();
        sharePoint
            .Setup(x => x.GetItemsByListUrlAsync(SiteUrl, listUrl, It.IsAny<string>(), It.IsAny<CancellationToken>()))
            .ReturnsAsync(items.Select(Json).ToList());
        sharePoint
            .Setup(x => x.CanUserViewItemAsync(SiteUrl, listUrl, It.IsAny<int>(), CallerEmail, It.IsAny<CancellationToken>()))
            .ReturnsAsync((string _, string _, int id, string _, CancellationToken _) => openableIds.Contains(id));

        var service = new BasisRequestsService(
            _services.GetRequiredService<ApprovalRouteDbContext>(),
            sharePoint.Object,
            _services.GetRequiredService<ListPartitionRegistry>(),
            new TestCurrentUser(CallerEmail));

        return (service, sharePoint, type.Value.Id);
    }

    [Fact]
    public async Task Returns_all_requests_and_marks_only_permitted_as_openable()
    {
        const string list = "/sites/requests/Lists/Оплата-all";
        var (service, sharePoint, typeId) = await BuildAsync("all", list,
        [
            // Number-колонка приходит дробной («50000.0») — тест держит её такой же.
            new { Id = 1, RequestUniqueCode = "24-2610-1", RequestStatus = "Согласовано", PayAmount = 50000.0 },
            new { Id = 2, RequestUniqueCode = "24-2610-2", RequestStatus = "На согласовании", PayAmount = 35000.5 }
        ], new HashSet<int> { 2 });

        var result = await service.GetByBasisAsync(typeId, BasisKey, CancellationToken.None);

        result.IsSuccess.ShouldBeTrue();
        result.Value.Count.ShouldBe(2);
        result.Value.Single(x => x.Id == 1).ShouldBe(new BasisRequestDto(1, list, "24-2610-1", "Согласовано", 50000, false));
        result.Value.Single(x => x.Id == 2).ShouldBe(new BasisRequestDto(2, list, "24-2610-2", "На согласовании", 35000.5, true));

        // Фильтр по основанию уходит в SharePoint, а не применяется в памяти.
        sharePoint.Verify(x => x.GetItemsByListUrlAsync(
            SiteUrl, list,
            It.Is<string>(q => q.Contains("BasisKey eq 'need%3A8028c7ac-ac23-8dd8-11f0-946facc42464'")),
            It.IsAny<CancellationToken>()), Times.Once);
    }

    [Fact]
    public async Task Empty_basis_key_is_a_validation_error()
    {
        var (service, _, typeId) = await BuildAsync("empty", "/sites/requests/Lists/Оплата-empty", [], new HashSet<int>());

        var result = await service.GetByBasisAsync(typeId, "  ", CancellationToken.None);

        result.IsFailed.ShouldBeTrue();
    }
}