using Microsoft.Data.Sqlite;
using ytLive.Models;

namespace ytLive.Services;

public partial class LayoutStore : IDisposable
{
    public List<Scene> Load()
    {
        Webcam = null;
        Socials = null;
        Music = null;
        var scenes = new List<Scene>();
        var sourcesByScene = new Dictionary<string, List<Source>>();
        var configsByScene = new Dictionary<string, List<WebcamSceneConfig>>();

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = "SELECT Id, Name, IsHidden, IsChatScene, HasBackground, HasSocialBar FROM Scene ORDER BY SortOrder";
            using var reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                scenes.Add(new Scene
                {
                    Id = reader.GetString(0),
                    Name = reader.GetString(1),
                    IsHidden = reader.GetInt32(2) != 0,
                    IsChatScene = reader.GetInt32(3) != 0,
                    HasBackground = reader.GetInt32(4) != 0,
                    HasSocialBar = reader.FieldCount > 5 && !reader.IsDBNull(5) && reader.GetInt32(5) != 0,
                });
            }
        }

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = "SELECT Id, DeviceId, Name FROM Webcam;";
            using var reader = cmd.ExecuteReader();
            if (reader.Read())
            {
                Webcam = new Webcam
                {
                    Id = reader.GetString(0),
                    DeviceId = reader.GetString(1),
                    Name = reader.GetString(2),
                };
            }
        }

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = "SELECT Id, BarPosition, BarEnabled FROM Socials LIMIT 1;";
            using var reader = cmd.ExecuteReader();
            if (reader.Read())
            {
                Socials = new SocialsConfig
                {
                    BarPosition = Enum.TryParse<SocialBarPosition>(reader.GetString(1), out var pos) ? pos : SocialBarPosition.Bottom,
                    BarEnabled = reader.FieldCount > 2 && !reader.IsDBNull(2) && reader.GetInt32(2) != 0,
                };
                var socialsId = reader.GetString(0);

                using var entryCmd = _connection.CreateCommand();
                entryCmd.CommandText = "SELECT Service, Handle, ProfileUrl, Software FROM SocialEntry WHERE SocialsId = $id ORDER BY SortOrder;";
                entryCmd.Parameters.AddWithValue("$id", socialsId);
                using var entryReader = entryCmd.ExecuteReader();
                while (entryReader.Read())
                {
                    Socials.Entries.Add(new SocialEntry
                    {
                        Service = Enum.TryParse<SocialService>(entryReader.GetString(0), out var svc) ? svc : SocialService.Link,
                        Handle = entryReader.GetString(1),
                        ProfileUrl = entryReader.GetString(2),
                        FediverseSoftware = entryReader.FieldCount > 3 && !entryReader.IsDBNull(3) ? entryReader.GetString(3) : null,
                    });
                }
            }
        }

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = "SELECT TrackPath, IsEnabled FROM Music LIMIT 1;";
            using var reader = cmd.ExecuteReader();
            if (reader.Read())
            {
                Music = new Music
                {
                    TrackPath = reader.GetString(0),
                    IsEnabled = reader.GetInt32(1) != 0,
                };
            }
        }

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = """
                SELECT Id, SceneId, AssetId, Type, Name, IsEnabled,
                       X, Y, Width, Height, Opacity, MonitorIndex, ClipShape, IsMirrored,
                       IsBackground, CaptureKey, ShowDesktop,
                       ChatFontSize, ChatFontColor, ChatBackgroundColor, ChatMaxMessages,
                       ChatShowTimestamps, ChatShowBadges, ChatMemberColor, ChatSuperChatColor,
                       WebUri, MediaPath, MediaIsLooping, MediaVolume, MediaPlaybackState
                FROM Source ORDER BY SortOrder
                """;
            using var reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                var sceneId = reader.GetString(1);
                var type = Enum.Parse<SourceType>(reader.GetString(3));
                var source = new Source
                {
                    Id = reader.GetString(0),
                    AssetId = reader.IsDBNull(2) ? null : reader.GetString(2),
                    Type = type,
                    Name = reader.GetString(4),
                    IsEnabled = reader.GetInt32(5) != 0,
                    X = reader.GetDouble(6),
                    Y = reader.GetDouble(7),
                    Width = reader.GetDouble(8),
                    Height = reader.GetDouble(9),
                    Opacity = reader.GetDouble(10),
                    MonitorIndex = reader.IsDBNull(11) ? null : reader.GetInt32(11),
                    ClipShape = Enum.TryParse<ClipShape>(reader.GetString(12), out var clip) ? clip : ClipShape.Traditional,
                    IsMirrored = reader.GetInt32(13) != 0,
                    // Rows saved before the Type setter derived the flag carry
                    // IsBackground=0; derive from Type, keeping the persisted bit
                    // for legacy DisplayCapture backdrops.
                    IsBackground = type == SourceType.Background || reader.GetInt32(14) != 0,
                    CaptureKey = reader.IsDBNull(15) ? null : reader.GetString(15),
                    ShowDesktop = reader.GetInt32(16) != 0,
                    ChatFontSize = reader.IsDBNull(17) ? 16 : reader.GetDouble(17),
                    ChatFontColor = reader.IsDBNull(18) ? "#FFFFFF" : reader.GetString(18),
                    ChatBackgroundColor = reader.IsDBNull(19) ? "#80000000" : reader.GetString(19),
                    ChatMaxMessages = reader.IsDBNull(20) ? 5 : reader.GetInt32(20),
                    ChatShowTimestamps = reader.IsDBNull(21) ? true : reader.GetInt32(21) != 0,
                    ChatShowBadges = reader.IsDBNull(22) ? true : reader.GetInt32(22) != 0,
                    ChatMemberColor = reader.IsDBNull(23) ? "#e94560" : reader.GetString(23),
                    ChatSuperChatColor = reader.IsDBNull(24) ? "#eab308" : reader.GetString(24),
                    WebUri = reader.IsDBNull(25) ? null : reader.GetString(25),
                    MediaPath = reader.IsDBNull(26) ? null : reader.GetString(26),
                    MediaIsLooping = reader.IsDBNull(27) ? false : reader.GetInt32(27) != 0,
                    MediaVolume = reader.IsDBNull(28) ? 1.0 : reader.GetDouble(28),
                    MediaPlaybackState = reader.IsDBNull(29)
                        ? MediaPlaybackState.Stopped
                        : Enum.TryParse<MediaPlaybackState>(reader.GetString(29), out var ps)
                            ? ps
                            : MediaPlaybackState.Stopped,
                };
                if (!sourcesByScene.TryGetValue(sceneId, out var list))
                    sourcesByScene[sceneId] = list = new List<Source>();
                list.Add(source);
            }
        }

        using (var cmd = _connection.CreateCommand())
        {
            cmd.CommandText = """
                SELECT SceneId, WebcamId, IsVisible, X, Y, Width, Height, Opacity,
                       ClipShape, IsMirrored, BorderColor, BorderOpacity, BorderWidth, BorderAnimation,
                       RectWidth, RectHeight
                FROM WebcamSceneConfig ORDER BY SortOrder
                """;
            using var reader = cmd.ExecuteReader();
            while (reader.Read())
            {
                var sceneId = reader.GetString(0);
                var config = new WebcamSceneConfig
                {
                    WebcamId = reader.GetString(1),
                    Name = Webcam?.Name ?? "Webcam",
                    IsVisible = reader.GetInt32(2) != 0,
                    X = reader.GetDouble(3),
                    Y = reader.GetDouble(4),
                    Width = reader.GetDouble(5),
                    Height = reader.GetDouble(6),
                    Opacity = reader.GetDouble(7),
                    ClipShape = Enum.TryParse<ClipShape>(reader.GetString(8), out var clip) ? clip : ClipShape.Traditional,
                    IsMirrored = reader.GetInt32(9) != 0,
                    BorderColor = reader.IsDBNull(10) ? string.Empty : reader.GetString(10),
                    BorderOpacity = reader.IsDBNull(11) ? 1.0 : reader.GetDouble(11),
                    BorderWidth = reader.IsDBNull(12) ? 0 : reader.GetInt32(12),
                    BorderAnimation = Enum.TryParse<BorderAnimation>(reader.GetString(13), out var anim) ? anim : BorderAnimation.None,
                    RectWidth = reader.IsDBNull(14) ? null : reader.GetDouble(14),
                    RectHeight = reader.IsDBNull(15) ? null : reader.GetDouble(15),
                };
                if (!configsByScene.TryGetValue(sceneId, out var list))
                    configsByScene[sceneId] = list = new List<WebcamSceneConfig>();
                list.Add(config);
            }
        }

        foreach (var scene in scenes)
        {
            if (sourcesByScene.TryGetValue(scene.Id, out var sources))
                foreach (var source in sources)
                    scene.Elements.Add(source);
            if (configsByScene.TryGetValue(scene.Id, out var configs))
                foreach (var config in configs)
                    scene.Elements.Add(config);

            var bg = scene.Elements.OfType<Source>().FirstOrDefault(s => s.IsBackground);
            if (bg != null)
            {
                // Load from source-keyed settings (new) or scene-keyed (legacy migration)
                var path = GetSetting($"BackgroundPath_{bg.Id}");
                if (string.IsNullOrWhiteSpace(path))
                    path = GetSetting($"BackgroundPath_{scene.Id}");
                if (!string.IsNullOrWhiteSpace(path))
                    bg.CustomBackgroundPath = path;

                var useDefault = GetSetting($"BackgroundUseDefault_{bg.Id}");
                if (string.IsNullOrWhiteSpace(useDefault))
                    useDefault = GetSetting($"BackgroundUseDefault_{scene.Id}");
                if (useDefault == "0")
                    bg.UseDefaultBackground = false;
            }
        }

        return scenes;
    }
}