Musify/backend/Tests/Musify.Api.Tests/Endpoints/AlbumEndpointsTests.cs

using System.Net;
using System.Net.Http.Json;
using Musify.Api.DataTransferObjects.Albums;
using Musify.Api.DataTransferObjects.Users;
using Musify.Api.Tests.TestSupport;
using Musify.Application.Albums.Responses;
using Musify.Application.Contracts;
using NSubstitute;
using Xunit;

namespace Musify.Api.Tests.Endpoints
{
    [Collection(ApiCollection.Name)]
    public sealed class AlbumEndpointsTests(ApiTestFixture fixture)
    {
        private async Task<long> CreateUserAsync()
        {
            var userId = Random.Shared.NextInt64(1, long.MaxValue);
            var response = await fixture.CreateAnonymousClient()
                .PostAsJsonAsync("/users", new CreateUserRequest(userId, $"user-{userId}", null, null));
            response.EnsureSuccessStatusCode();
            return userId;
        }

        private async Task<Guid> CreatePictureIntentAsync(HttpClient client)
        {
            fixture.StorageService
                .GetUploadUrlAsync(Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<TimeSpan>(), Arg.Any<CancellationToken>())
                .Returns("https://storage.musify.test/presigned-upload");
            fixture.StorageService
                .HeadObjectAsync(Arg.Any<string>(), Arg.Any<string>(), Arg.Any<CancellationToken>())
                .Returns(new ObjectMetaData("image/webp", 1024));

            var response = await client.PostAsJsonAsync(
                "/albums/upload-picture",
                new RequestAlbumPictureUploadRequest("webp", "image/webp"),
                TestContext.Current.CancellationToken);
            response.EnsureSuccessStatusCode();

            var body = await response.Content.ReadFromJsonAsync<AlbumPictureUploadResponse>(TestContext.Current.CancellationToken);
            return body!.IntentId;
        }

        [Fact]
        public async Task PostAlbums_NoAuthHeader_ReturnsUnauthorized()
        {
            var response = await fixture.CreateAnonymousClient()
                .PostAsJsonAsync("/albums", new CreateAlbumRequest("Unauthorized Album", null, null, Guid.NewGuid()), TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
        }

        [Fact]
        public async Task PostAlbums_AuthenticatedExistingUser_ReturnsCreatedAlbum()
        {
            var userId = await CreateUserAsync();
            var client = fixture.CreateAuthenticatedClient(userId);
            var pictureIntentId = await CreatePictureIntentAsync(client);

            var response = await client.PostAsJsonAsync("/albums", new CreateAlbumRequest("My Album", "desc", 2024, pictureIntentId), TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.Created, response.StatusCode);
            var body = await response.Content.ReadFromJsonAsync<AlbumApplicationResponse>(TestContext.Current.CancellationToken);
            Assert.NotNull(body);
            Assert.Equal("My Album", body.Title);
            Assert.Equal(userId, body.OwnerUserId);
        }

        [Fact]
        public async Task PostAlbums_BlankTitle_ReturnsValidationProblem()
        {
            var userId = await CreateUserAsync();
            var client = fixture.CreateAuthenticatedClient(userId);

            var response = await client.PostAsJsonAsync("/albums", new CreateAlbumRequest("", null, null, Guid.NewGuid()), TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
        }

        [Fact]
        public async Task PostAlbums_MissingPictureIntent_ReturnsValidationProblem()
        {
            var userId = await CreateUserAsync();
            var client = fixture.CreateAuthenticatedClient(userId);

            var response = await client.PostAsJsonAsync("/albums", new CreateAlbumRequest("No Picture", null, null, Guid.Empty), TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
        }

        [Fact]
        public async Task GetAlbumById_AfterCreate_ReturnsIt()
        {
            var userId = await CreateUserAsync();
            var client = fixture.CreateAuthenticatedClient(userId);
            var pictureIntentId = await CreatePictureIntentAsync(client);
            var created = await (await client.PostAsJsonAsync("/albums", new CreateAlbumRequest("Findable", null, null, pictureIntentId), TestContext.Current.CancellationToken))
                .Content.ReadFromJsonAsync<AlbumApplicationResponse>(TestContext.Current.CancellationToken);

            var response = await fixture.CreateAnonymousClient().GetAsync($"/albums/{created!.Id}", TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
        }

        [Fact]
        public async Task DeleteAlbum_NotTheOwner_ReturnsUnauthorized()
        {
            var owner = await CreateUserAsync();
            var stranger = await CreateUserAsync();
            var ownerClient = fixture.CreateAuthenticatedClient(owner);
            var pictureIntentId = await CreatePictureIntentAsync(ownerClient);
            var created = await (await ownerClient.PostAsJsonAsync("/albums", new CreateAlbumRequest("Owned", null, null, pictureIntentId), TestContext.Current.CancellationToken))
                .Content.ReadFromJsonAsync<AlbumApplicationResponse>(TestContext.Current.CancellationToken);

            var response = await fixture.CreateAuthenticatedClient(stranger).DeleteAsync($"/albums/{created!.Id}", TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
        }

        [Fact]
        public async Task DeleteAlbum_Owner_ReturnsNoContentAndAlbumIsGone()
        {
            var userId = await CreateUserAsync();
            var client = fixture.CreateAuthenticatedClient(userId);
            var pictureIntentId = await CreatePictureIntentAsync(client);
            var created = await (await client.PostAsJsonAsync("/albums", new CreateAlbumRequest("Deletable", null, null, pictureIntentId), TestContext.Current.CancellationToken))
                .Content.ReadFromJsonAsync<AlbumApplicationResponse>(TestContext.Current.CancellationToken);

            var deleteResponse = await client.DeleteAsync($"/albums/{created!.Id}", TestContext.Current.CancellationToken);
            var getResponse = await fixture.CreateAnonymousClient().GetAsync($"/albums/{created.Id}", TestContext.Current.CancellationToken);

            Assert.Equal(HttpStatusCode.NoContent, deleteResponse.StatusCode);
            Assert.Equal(HttpStatusCode.NotFound, getResponse.StatusCode);
        }
    }
}