using EmbyToolbox.Models;

namespace EmbyToolbox.Services;

public sealed class ProfileOverrideBuilder
{
    public EffectiveProfileSettings Build(
        ConversionProfileSettingsEntry source,
        ConversionProfileSettingsEntry formValues,
        string sourceProfileName)
    {
        var changed = new List<string>();
        AddIfChanged(changed, "Container", source.Container, formValues.Container);
        AddIfChanged(changed, "Video", source.Video, formValues.Video);
        AddIfChanged(changed, "PixelFormat", source.PixelFormat, formValues.PixelFormat);
        AddIfChanged(changed, "Resolution", source.Resolution, formValues.Resolution);
        AddIfChanged(changed, "Fps", source.Fps, formValues.Fps);
        AddIfChanged(changed, "Audio", source.Audio, formValues.Audio);
        AddIfChanged(changed, "Bitrate", source.Bitrate, formValues.Bitrate);
        AddIfChanged(changed, "VideoBitrateMode", source.VideoBitrateMode, formValues.VideoBitrateMode);
        if (source.VideoBitrateMbps != formValues.VideoBitrateMbps)
        {
            changed.Add("VideoBitrateMbps");
        }

        AddIfChanged(changed, "Subtitles", source.Subtitles, formValues.Subtitles);
        AddIfChanged(changed, "ExternalTracks", source.ExternalTracks, formValues.ExternalTracks);
        AddIfChanged(changed, "ExternalSubtitles", source.ExternalSubtitles, formValues.ExternalSubtitles);
        AddIfChanged(changed, "Fonts", source.Fonts, formValues.Fonts);

        return new EffectiveProfileSettings
        {
            SourceProfileName = sourceProfileName,
            Profile = Clone(formValues, sourceProfileName),
            ChangedFields = changed
        };
    }

    public static ConversionProfileSettingsEntry Clone(ConversionProfileSettingsEntry source, string? profileName = null) =>
        new()
        {
            Profile = string.IsNullOrWhiteSpace(profileName) ? source.Profile : profileName!,
            Container = source.Container,
            Video = source.Video,
            PixelFormat = source.PixelFormat,
            Resolution = source.Resolution,
            Fps = source.Fps,
            Audio = source.Audio,
            Bitrate = source.Bitrate,
            VideoBitrateMode = source.VideoBitrateMode,
            VideoBitrateMbps = source.VideoBitrateMbps,
            Subtitles = source.Subtitles,
            ExternalTracks = source.ExternalTracks,
            ExternalSubtitles = source.ExternalSubtitles,
            Fonts = source.Fonts
        };

    private static void AddIfChanged(List<string> changed, string name, string? source, string? value)
    {
        if (!string.Equals(source?.Trim(), value?.Trim(), StringComparison.Ordinal))
        {
            changed.Add(name);
        }
    }
}