using System;
using System.IO;
using System.Net.Http;
using System.Threading.Tasks;
using Paca.Server;
using Xunit;

namespace Paca.Tests.Server;

public class ServerSmartPlaylistGateTests
{
    [Fact]
    public async Task Gate235_ServerHost_GetPlaylistM3u8_ReturnsValidContent()
    {
        var tempDir = Path.Combine(Path.GetTempPath(), "paca_playlist_test_" + Guid.NewGuid());
        Directory.CreateDirectory(tempDir);
        try
        {
            var testFile1 = Path.Combine(tempDir, "video1.mp4");
            File.WriteAllBytes(testFile1, new byte[1024]);

            var options = new ServerOptions
            {
                Port = 0,
                Token = "test-token-123456",
                LibraryFolder = tempDir,
                DeviceName = "TestPC",
                Queue = new TestQueueAdapter()
            };

            await using var host = await ServerHost.StartAsync(options);
            using var client = new HttpClient();
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "test-token-123456");

            var resp = await client.GetAsync($"http://127.0.0.1:{host.Port}/api/playlist/all.m3u8");
            Assert.True(resp.IsSuccessStatusCode);
            Assert.Contains("mpegurl", resp.Content.Headers.ContentType?.MediaType ?? "");

            var body = await resp.Content.ReadAsStringAsync();
            Assert.StartsWith("#EXTM3U", body.Trim());
            Assert.Contains("video1.mp4", body);
        }
        finally
        {
            try { Directory.Delete(tempDir, true); } catch { }
        }
    }

    [Fact]
    public async Task Gate236_ServerHost_GetPlaylistM3u8_SpecificCollection_FiltersCorrectly()
    {
        var tempDir = Path.Combine(Path.GetTempPath(), "paca_playlist_test_filtered_" + Guid.NewGuid());
        Directory.CreateDirectory(tempDir);
        try
        {
            var audioFile = Path.Combine(tempDir, "song.mp3");
            var videoFile = Path.Combine(tempDir, "lecture.mp4");
            File.WriteAllBytes(audioFile, new byte[1024]);
            File.WriteAllBytes(videoFile, new byte[1024]);

            var options = new ServerOptions
            {
                Port = 0,
                Token = "test-token-789",
                LibraryFolder = tempDir,
                DeviceName = "TestPC",
                Queue = new TestQueueAdapter()
            };

            await using var host = await ServerHost.StartAsync(options);
            using var client = new HttpClient();
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", "test-token-789");

            var resp = await client.GetAsync($"http://127.0.0.1:{host.Port}/api/playlist/Music%20%26%20Podcasts.m3u8");
            Assert.True(resp.IsSuccessStatusCode);

            var body = await resp.Content.ReadAsStringAsync();
            Assert.StartsWith("#EXTM3U", body.Trim());
            Assert.Contains("song.mp3", body);
            Assert.DoesNotContain("lecture.mp4", body);
        }
        finally
        {
            try { Directory.Delete(tempDir, true); } catch { }
        }
    }

    private class TestQueueAdapter : IQueueAdapter
    {
        public Task<string> AddAsync(string url, string? title = null) => Task.FromResult("q1");
        public Task CancelAsync(string id) => Task.CompletedTask;
        public Task<IReadOnlyList<QueueItemDto>> GetItemsAsync() => Task.FromResult<IReadOnlyList<QueueItemDto>>(Array.Empty<QueueItemDto>());
        public Task PauseAsync(string id) => Task.CompletedTask;
        public Task ResumeAsync(string id) => Task.CompletedTask;
        public event Action? Changed { add { } remove { } }
    }
}