using Avalonia;
using Castle.Core.Logging;
using Newtonsoft.Json;
using Pilz;
using Pilz.Configuration;

namespace ModpackUpdater.Apps.Client.Gui;

public static class Program
{
    public const string UpdateUrl = "https://git.pilzinsel64.de/litw-refined/minecraft-modpack-updater/-/snippets/3/raw/main/updates-new.json";

    private static readonly SettingsManager settingsManager;

    public static string ProcessPath = EnvironmentEx.ProcessPath!;
    public static ISettings Settings => settingsManager.Instance;
    public static ILogger Log { get; } = new ConsoleLogger();

    static Program()
    {
        settingsManager = new(GetSettingsPath(2), true);
        MigrateLegacySettings(GetSettingsPath(null));
    }

    [STAThread]
    internal static void Main(string[] args)
    {
        AppGlobals.Initialize();
        BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
    }

    public static AppBuilder BuildAvaloniaApp()
    {
        return AppBuilder.Configure<App>()
            .UsePlatformDetect()
            .WithInterFont()
            .LogToTrace();
    }

    private static string GetSettingsPath(int? settingsVersion = 3)
    {
        const string appDataDirectoryName = "MinecraftModpackUpdater";
        var fileNamePostfix = settingsVersion == null ? string.Empty : $"V{settingsVersion}";
        var settingsFileName = $"Settings{fileNamePostfix}.json";

        var settingsPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), appDataDirectoryName);
        Directory.CreateDirectory(settingsPath);
        settingsPath = Path.Combine(settingsPath, settingsFileName);

        return settingsPath;
    }

    private static void MigrateLegacySettings(string settingsPath)
    {
        // Try load legacy config file
        if (!File.Exists(settingsPath) || JsonConvert.DeserializeObject<AppConfig>(File.ReadAllText(settingsPath)) is not AppConfig legacyConfig)
            return;

        // Migrate
        var newConfig = Settings.Get<AppConfig>();
        newConfig.LastMinecraftProfilePath = legacyConfig.LastMinecraftProfilePath;

        if (ModpackInfo.TryLoad(legacyConfig.LastMinecraftProfilePath) is ModpackInfo info)
#pragma warning disable CS0612 // Typ oder Element ist veraltet
            info.ConfigUrl = legacyConfig.ConfigFilePath;

        // Ensure save settings
        settingsManager.Save();

        // Delete legacy config file
        File.Delete(settingsPath);
    }
}