using Castle.Core.Logging;
using ModpackUpdater.Manager;
using Newtonsoft.Json;
using Pilz;
using Pilz.Configuration;
using System.Runtime.InteropServices;

[assembly: AssemblyAppVersion("1.6.6.0")]

namespace ModpackUpdater.Apps.Client;

public static class Program
{
    private static readonly SettingsManager settingsManager;
    private static readonly ILogger log = new ConsoleLogger();

    public static ISettings Settings => settingsManager.Instance;

    public static ILogger Log => log;

    internal static Options Options { get; private set; }

    [DllImport("kernel32.dll")]
    static extern nint GetConsoleWindow();

    [DllImport("user32.dll")]
    static extern bool ShowWindow(nint hWnd, int nCmdShow);

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

    [STAThread]
    internal static void Main(string[] args)
    {
        Options = new Options(args);
        if (Options.Help)
            Options.DrawHelp();
        else if (Options.NoUi)
            InstallWithoutGui(Options.UpdateOptions, Options.Silent);
        else
        {
            ShowWindow(GetConsoleWindow(), 0);
            RunApp(Options.UpdateOptions);
        }
    }

    private static void RunApp(UpdateCheckOptionsAdv updateOptions)
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.SetHighDpiMode(HighDpiMode.PerMonitorV2);
        AppGlobals.Initialize();
        Application.Run(new Form1(updateOptions));
    }

    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);
    }

    private static void InstallWithoutGui(UpdateCheckOptionsAdv updateOptions, bool silent)
    {
        var info = ModpackInfo.TryLoad(updateOptions.ProfileFolder);
        var config = ModpackConfig.LoadFromUrl(CheckModpackConfigUrl(updateOptions.ModpackConfig, info));
        var features = new ModpackFeatures(config);

        // Check features
        if (!string.IsNullOrWhiteSpace(updateOptions.ExtrasKey))
            info.ExtrasKey = updateOptions.ExtrasKey;
        if (!string.IsNullOrWhiteSpace(info.ExtrasKey))
            updateOptions.IncludeExtras = features.IsEnabled(ModpackFeatures.FeatureAllowExtas, new AllowExtrasFeatureContext(info));

        // Check for update
        var installer = new ModpackInstaller(config, info)
        {
            OverwriteRefTag = Options.RefTag,
            Log = Log,
        };
        var result = installer.Check(updateOptions).Result;

        if (!silent && !updateOptions.NoUpdate && new AppUpdater().Check().Result)
            Log.Info("A new version is available!");

        if (result.HasUpdates)
        {
            var success = installer.Install(result).Result;
            if (!silent)
                Log.Info($"Installation {(success ?? false ? "completed successfully" : "failed")}!");
        }
        else if (!silent)
            Log.Info("No updates available");
    }

    private static string CheckModpackConfigUrl(string configUrl, ModpackInfo info)
    {
        if (string.IsNullOrWhiteSpace(configUrl) && !string.IsNullOrWhiteSpace(info.ConfigUrl))
            return info.ConfigUrl;
        return configUrl;
    }
}