using Microsoft.Extensions.Logging;
using Moq;
using RdtClient.Data.Enums;
using RdtClient.Data.Models.Data;
using RdtClient.Data.Models.DebridClient;
using RdtClient.Service.Services;
using System.Text.Json;

namespace RdtClient.Service.Test.Services;

public class QBittorrentTest
{
    private readonly Mock<Authentication> _authenticationMock;
    private readonly Mock<ILogger<QBittorrent>> _loggerMock;
    private readonly QBittorrent _qBittorrent;
    private readonly Mock<Torrents> _torrentsMock;

    public QBittorrentTest()
    {
        _loggerMock = new();
        _torrentsMock = new(null!, null!, null!, null!, null!, null!, null!, null!, null!, null!, null!);
        _authenticationMock = new(null!, null!, null!);

        _qBittorrent = new(_loggerMock.Object, null!, _authenticationMock.Object, _torrentsMock.Object, null!);
    }

    [Fact]
    public async Task TorrentInfo_ShouldOnlyReturnTorrents()
    {
        // Arrange
        var allTorrents = new List<Torrent>
        {
            new()
            {
                TorrentId = Guid.NewGuid(),
                Hash = "hash1",
                RdName = "Torrent 1",
                Type = DownloadType.Torrent
            },
            new()
            {
                TorrentId = Guid.NewGuid(),
                Hash = "hash2",
                RdName = "NZB 1",
                Type = DownloadType.Nzb
            }
        };

        _torrentsMock.Setup(m => m.Get()).ReturnsAsync(allTorrents);

        // Act
        var result = await _qBittorrent.TorrentInfo();

        // Assert
        Assert.Single(result);
        Assert.Equal("hash1", result[0].Hash);
        Assert.Equal("Torrent 1", result[0].Name);
    }

    [Fact]
    public async Task TorrentInfo_ShouldReport100Percent_WhenDownloadIsComplete()
    {
        // Arrange
        var downloadId = Guid.NewGuid();
        var torrentId = Guid.NewGuid();

        var allTorrents = new List<Torrent>
        {
            new()
            {
                TorrentId = torrentId,
                Hash = "hash1",
                RdName = "Torrent 1",
                RdProgress = 100, // Real-Debrid is 100%
                Type = DownloadType.Torrent,
                Downloads = new List<Download>
                {
                    new()
                    {
                        DownloadId = downloadId,
                        TorrentId = torrentId
                    }
                }
            }
        };

        _torrentsMock.Setup(m => m.Get()).ReturnsAsync(allTorrents);

        // Local download is also 100%
        _torrentsMock.Setup(m => m.GetDownloadStats(downloadId)).Returns((0, 1000, 1000));

        // Act
        var result = await _qBittorrent.TorrentInfo();

        // Assert
        Assert.Single(result);
        Assert.Equal(1.0f, result[0].Progress);
    }

    [Fact]
    public async Task TorrentInfo_ShouldReport90Percent_WhenRDIs100AndLocalIs80()
    {
        // Arrange
        var downloadId = Guid.NewGuid();
        var torrentId = Guid.NewGuid();

        var allTorrents = new List<Torrent>
        {
            new()
            {
                TorrentId = torrentId,
                Hash = "hash1",
                RdName = "Torrent 1",
                RdProgress = 100, // Real-Debrid is 100%
                Type = DownloadType.Torrent,
                Downloads = new List<Download>
                {
                    new()
                    {
                        DownloadId = downloadId,
                        TorrentId = torrentId
                    }
                }
            }
        };

        _torrentsMock.Setup(m => m.Get()).ReturnsAsync(allTorrents);

        // Local download is 80%
        _torrentsMock.Setup(m => m.GetDownloadStats(downloadId)).Returns((0, 1000, 800));

        // Act
        var result = await _qBittorrent.TorrentInfo();

        // Assert
        Assert.Single(result);

        // Current behavior is (1.0 + 0.8) / 2 = 0.9
        Assert.Equal(0.9f, result[0].Progress);
    }

    [Fact]
    public async Task TorrentFileContents_ShouldReturnAllFiles_WithIndexesAndPriority()
    {
        // Arrange
        var torrent = new Torrent
        {
            Hash = "hash1",
            Type = DownloadType.Torrent,
            RdFiles = JsonSerializer.Serialize(new List<DebridClientFile>
            {
                new()
                {
                    Id = 1,
                    Path = "good.mkv",
                    Bytes = 1000,
                    Selected = true
                },
                new()
                {
                    Id = 2,
                    Path = "dangerous.exe",
                    Bytes = 10,
                    Selected = false
                }
            })
        };

        _torrentsMock.Setup(m => m.GetByHash("hash1")).ReturnsAsync(torrent);

        // Act
        var result = await _qBittorrent.TorrentFileContents("hash1");

        // Assert
        Assert.NotNull(result);
        Assert.Collection(result!,
            first =>
            {
                Assert.Equal(0, first.Index);
                Assert.Equal("good.mkv", first.Name);
                Assert.Equal(1, first.Priority);
            },
            second =>
            {
                Assert.Equal(1, second.Index);
                Assert.Equal("dangerous.exe", second.Name);
                Assert.Equal(0, second.Priority);
            });
    }

    [Fact]
    public async Task TorrentProperties_ShouldExposePublicTorrentFlag()
    {
        // Arrange
        var torrent = new Torrent
        {
            Hash = "hash1",
            Type = DownloadType.Torrent,
            Added = DateTimeOffset.UtcNow
        };

        _torrentsMock.Setup(m => m.GetByHash("hash1")).ReturnsAsync(torrent);

        // Act
        var result = await _qBittorrent.TorrentProperties("hash1");

        // Assert
        Assert.NotNull(result);
        Assert.False(result!.IsPrivate);
    }
}