using System.Net;
using System.Security.Cryptography;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using RadicadeServer.Admin;
using RadicadeServer.DB;
using Xunit;

namespace RadicadeServer.Tests;

[Collection(DbFactoryCollection.Name)]
public class AdminBundleUploadTests
{
    [Theory]
    [InlineData("/admin/panel/upload/datablob")]
    [InlineData("/admin/rooms/upload/datablob")]
    public async Task LargeBundleUploadsPreserveBytesAndStillRequireTheKey(string route)
    {
        var root = Directory.CreateTempSubdirectory("radicade-upload-test-").FullName;
        var oldStorage = DBConfig.CDNStorage;
        var oldKey = DBConfig.AdminApiKey;
        DBConfig.CDNStorage = root;
        DBConfig.AdminApiKey = "bundle-upload-test-key";
        var builder = WebApplication.CreateBuilder();
        builder.WebHost.UseKestrel().UseUrls("http://127.0.0.1:0");
        builder.Logging.ClearProviders();
        builder.Services.AddControllers().AddApplicationPart(typeof(AdminPanelAPI).Assembly);
        builder.Services.AddCors(options => options.AddPolicy("AdminPanel", policy => policy.AllowAnyOrigin()));
        builder.Services.Configure<FormOptions>(options => options.MultipartBodyLengthLimit = 256L * 1024 * 1024);
        builder.Services.AddDbContext<RecDBContext>(options => options.UseInMemoryDatabase(Guid.NewGuid().ToString()));
        await using var app = builder.Build();
        app.UseCors();
        app.MapControllers();
        try
        {
            await app.StartAsync();
            using var client = new HttpClient { BaseAddress = new Uri(app.Urls.Single()) };
            // Exercise real Kestrel and MVC model binding, beyond the default 30 MB ceiling.
            var bytes = new byte[39_000_000];
            RandomNumberGenerator.Fill(bytes);
            using var form = new MultipartFormDataContent();
            form.Add(new ByteArrayContent(bytes), "file", "bundle.assetbundle");
            using var response = await client.PostAsync(route + "?key=bundle-upload-test-key&name=bundle.assetbundle", form);
            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
            Assert.Equal(SHA256.HashData(bytes), SHA256.HashData(await File.ReadAllBytesAsync(Path.Join(root, "bundle.assetbundle"))));

            using var unauthorizedForm = new MultipartFormDataContent();
            unauthorizedForm.Add(new ByteArrayContent(new byte[] { 1, 2, 3 }), "file", "unauthorized.assetbundle");
            using var unauthorized = await client.PostAsync(route + "?key=wrong&name=unauthorized.assetbundle", unauthorizedForm);
            Assert.Equal(HttpStatusCode.Unauthorized, unauthorized.StatusCode);
            Assert.False(File.Exists(Path.Join(root, "unauthorized.assetbundle")));

            using var malformed = new ByteArrayContent(new byte[] { 1, 2, 3 });
            malformed.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("multipart/form-data");
            using var badRequest = await client.PostAsync(route + "?key=bundle-upload-test-key&name=broken.assetbundle", malformed);
            Assert.Equal(HttpStatusCode.BadRequest, badRequest.StatusCode);
            Assert.DoesNotContain("Invalid secret", await badRequest.Content.ReadAsStringAsync());
            Assert.False(File.Exists(Path.Join(root, "broken.assetbundle")));
        }
        finally
        {
            await app.StopAsync();
            DBConfig.CDNStorage = oldStorage;
            DBConfig.AdminApiKey = oldKey;
            Directory.Delete(root, recursive: true);
        }
    }
}