using Api.SeaHavenIndustries.Controllers;
using Api.SeaHavenIndustries.Helper;
using Api.SeaHavenIndustries.Infrastructure;
using Data.SeaHavenIndustries;
using FluentAssertions;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Moq;
using SeaHaven.DataServices.Implementation;
using SeaHaven.DataServices.Interfaces;
using SeaHaven.Services.Configuration;
using SeaHaven.Services.Implementation;
using SeaHaven.Services.Interfaces;
using Xunit;

namespace Api.SeaHavenIndustries.Tests;

public sealed class VendorPortalDocumentTests : IDisposable
{
    private const string Token = "vendor-document-test-token";
    private readonly string _contentRoot = Path.Combine(
        Path.GetTempPath(),
        $"seahaven-vendor-documents-{Guid.NewGuid():N}");

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

    private VendorPortalController NewController(ApplicationDbContext context)
    {
        var vendorData = new VendorDataService(context);
        var tokenService = new VendorPortalTokenService(
            vendorData,
            Microsoft.Extensions.Options.Options.Create(new VendorPortalOptions()));
        var documentData = new VendorDocumentDataService(context);
        var storageEnvironment = new Mock<IWebHostEnvironment>();
        storageEnvironment.SetupGet(item => item.ContentRootPath).Returns(_contentRoot);
        var storage = new VendorDocumentStorageAdapter(storageEnvironment.Object);

        var service = new VendorPortalService(
            tokenService,
            new DispatchDataService(context),
            Mock.Of<IUpliftDataService>(),
            Mock.Of<ICommentDataService>(),
            Mock.Of<IUserDataService>(),
            Mock.Of<IEmailSender>(),
            documentData,
            storage,
            Microsoft.Extensions.Options.Options.Create(new FrontendOptions()),
            Microsoft.Extensions.Options.Options.Create(new ApprovalsOptions()),
            Microsoft.Extensions.Options.Options.Create(new VendorDocumentsOptions()));

        var controller = new VendorPortalController(service, Mock.Of<ILogger<VendorPortalController>>());
        controller.ControllerContext = new ControllerContext
        {
            HttpContext = new DefaultHttpContext()
        };
        controller.Request.Headers["X-Vendor-Token"] = Token;
        return controller;
    }

    private static async Task<(Vendor Vendor, Dispatch Dispatch)> SeedDispatch(
        ApplicationDbContext context)
    {
        var vendor = new Vendor { CompanyName = "Gateway", IsActive = true };
        var workOrder = new WorkOrder { WorkerOrderTitle = "Repair" };
        context.AddRange(vendor, workOrder);
        await context.SaveChangesAsync();
        var dispatch = new Dispatch
        {
            VendorId = vendor.Id,
            WorkOrderId = workOrder.Id,
            Status = "Completed"
        };
        context.Dispatches.Add(dispatch);
        context.VendorAccessTokens.Add(new VendorAccessToken
        {
            VendorId = vendor.Id,
            Token = Token,
            IssuedAt = DateTime.UtcNow,
            ExpiresAt = DateTime.UtcNow.AddDays(1)
        });
        await context.SaveChangesAsync();
        return (vendor, dispatch);
    }

    private static FormFile FormFile(byte[] bytes, string fileName, string contentType)
    {
        return new FormFile(new MemoryStream(bytes), 0, bytes.Length, "file", fileName)
        {
            Headers = new HeaderDictionary(),
            ContentType = contentType
        };
    }

    [Fact]
    public async Task UploadCompletionDocument_RejectsMismatchedFileSignature()
    {
        using var context = NewContext();
        var (_, dispatch) = await SeedDispatch(context);

        var result = await NewController(context).UploadCompletionDocument(
            dispatch.Id,
            FormFile("not a pdf"u8.ToArray(), "completion.pdf", "application/pdf"));

        result.Should().BeOfType<BadRequestObjectResult>();
        context.VendorCompletionDocuments.Should().BeEmpty();
    }

    [Fact]
    public async Task UploadCompletionDocument_QuarantinesValidFileUntilScanPasses()
    {
        using var context = NewContext();
        var (_, dispatch) = await SeedDispatch(context);
        var controller = NewController(context);
        var pdf = "%PDF-1.4\nvendor completion"u8.ToArray();

        var upload = await controller.UploadCompletionDocument(
            dispatch.Id,
            FormFile(pdf, "completion.pdf", "application/pdf"));

        upload.Should().BeOfType<OkObjectResult>();
        var document = await context.VendorCompletionDocuments.SingleAsync();
        document.ScanStatus.Should().Be("Pending");
        document.ReviewStatus.Should().Be("Processing");
        File.Exists(VendorDocumentStorage.ResolvePath(_contentRoot, document)).Should().BeTrue();

        var download = await controller.DownloadCompletionDocument(dispatch.Id, document.Id);

        var locked = download.Should().BeOfType<ObjectResult>().Subject;
        locked.StatusCode.Should().Be(StatusCodes.Status423Locked);
    }

    [Fact]
    public async Task UploadCompletionDocument_AcceptsMixedCasePdfContentType()
    {
        using var context = NewContext();
        var (_, dispatch) = await SeedDispatch(context);
        var pdf = "%PDF-1.4\nvendor completion"u8.ToArray();

        var result = await NewController(context).UploadCompletionDocument(
            dispatch.Id,
            FormFile(pdf, "completion.pdf", "Application/PDF"));

        result.Should().BeOfType<OkObjectResult>();
        context.VendorCompletionDocuments.Should().HaveCount(1);
    }

    [Fact]
    public async Task UploadCompletionDocument_AcceptsMixedCaseImageContentType()
    {
        using var context = NewContext();
        var (_, dispatch) = await SeedDispatch(context);
        var png = new byte[] { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00 };

        var result = await NewController(context).UploadCompletionDocument(
            dispatch.Id,
            FormFile(png, "photo.png", "Image/PNG"));

        result.Should().BeOfType<OkObjectResult>();
        context.VendorCompletionDocuments.Should().HaveCount(1);
    }

    public void Dispose()
    {
        if (Directory.Exists(_contentRoot))
        {
            Directory.Delete(_contentRoot, recursive: true);
        }
    }
}