using System.Drawing.Imaging;
using Dalamud.Configuration;
using Dalamud.Game.ClientState.GamePad;
using FFXIVClientStructs.FFXIV.Client.UI;
using Scriban;
using Scriban.Parsing;

namespace Screenie;

[Serializable]
public class Configuration : IPluginConfiguration {
    public int Version { get; set; } = 1;

    public string SaveDirectory = Path.Join(Environment.GetFolderPath(Environment.SpecialFolder.MyPictures), "Screenie");
    public Format SaveFormat = Format.Png;
    public int SaveFormatData = 90;

    public string SaveFileNameFormat = """
                                       {{ captured_at_local | date.to_string '%Y/%m %b/[%H.%M.%S]' }}
                                       {{ if active_character -}}
                                       {{ active_character.name }} - {{ location }}
                                       {{- else -}}
                                       Main Menu or Loading Screen
                                       {{- end -}}

                                       {{- if area }} ({{ area }}) {{- end -}}
                                       {{- if ward }} W{{ ward }} {{- end -}}
                                       {{- if plot -}} P{{ plot }} {{- end -}}
                                       """;

    public GamepadButtons GamepadKeybind = GamepadButtons.L1 | GamepadButtons.Start;
    public List<SeVirtualKey> KeyboardKeybind = [];
    public bool DisableNativeScreenshots = true;

    private int _templateHashCode;
    private Template? _template;

    internal Template SaveFileNameTemplate {
        get {
            var currentHash = this.SaveFileNameFormat.GetHashCode();
            if (currentHash == this._templateHashCode && this._template != null) {
                return this._template;
            }

            this._templateHashCode = currentHash;
            this._template = Template.Parse(
                this.SaveFileNameFormat,
                parserOptions: new ParserOptions {
                    LiquidFunctionsToScriban = true,
                }
            );

            return this._template;
        }
    }
}

public enum Format {
    Png,
    WebpLossless,
    WebpLossy,
    Jpg,
    // AvifLossless,
    // AvifLossy,
    // HeicLossless,
    // HeicLossy,
}

public static class FormatExt {
    public static string Name(this Format format) {
        return format switch {
            Format.Png => "PNG",
            Format.WebpLossless => "WEBP (lossless)",
            Format.WebpLossy => "WEBP (lossy)",
            Format.Jpg => "JPG",
            // Format.AvifLossless => "AVIF (lossless)",
            // Format.AvifLossy => "AVIF (lossy)",
            // Format.HeicLossless => "HEIC (lossless)",
            // Format.HeicLossy => "HEIC (lossy)",
            _ => throw new ArgumentOutOfRangeException(nameof(format), format, null),
        };
    }

    public static ImageFormat? ToImageFormat(this Format format) {
        return format switch {
            Format.Png => ImageFormat.Png,
            Format.WebpLossless => null,
            Format.WebpLossy => null,
            Format.Jpg => ImageFormat.Jpeg,
            // Format.AvifLossless => null,
            // Format.AvifLossy => null,
            // Format.HeicLossless => null,
            // Format.HeicLossy => null,
            _ => throw new ArgumentOutOfRangeException(nameof(format), format, null),
        };
    }
}