using BetterGenshinImpact.GameTask.Common;
using Microsoft.Extensions.Logging;
using Microsoft.Win32;
using System;
using System.Collections.Frozen;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

namespace BetterGenshinImpact.Genshin.Paths;

/// <summary>
/// 已经弃用
/// </summary>
[Obsolete]
internal partial class GameExePath
{
    public static readonly FrozenSet<string> GameRegistryPaths = FrozenSet.ToFrozenSet(
    [
        @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\原神",
        @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Genshin Impact",
        // @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\云·原神",
    ]);

    /// <summary>
    /// 游戏路径（云原神除外）
    /// </summary>
    public static string? GetWithoutCloud()
    {
        return GameRegistryPaths.Select(regKey => GetGameExePathFromRegistry(regKey, false)).FirstOrDefault(exePath => !string.IsNullOrEmpty(exePath));
    }

    /// <summary>
    /// 从注册表查找游戏路径
    /// </summary>
    /// <param name="key"></param>
    /// <param name="isCloud">云原神</param>
    /// <returns></returns>
    private static string? GetGameExePathFromRegistry(string key, bool isCloud)
    {
        try
        {
            var launcherPath = Registry.GetValue(key, "InstallPath", null) as string;
            if (isCloud)
            {
                var exeName = Registry.GetValue(key, "ExeName", null) as string;
                var exePath = Path.Join(launcherPath, exeName);
                if (File.Exists(exePath))
                {
                    return exePath;
                }
            }
            else
            {
                var configPath = Path.Join(launcherPath, "config.ini");
                if (File.Exists(configPath))
                {
                    var str = File.ReadAllText(configPath);
                    var installPath = GameInstallPathRegex().Match(str).Groups[1].Value.Trim();
                    var exeName = GameStartNameRegex().Match(str).Groups[1].Value.Trim();
                    var exePath = Path.GetFullPath(exeName, installPath);
                    if (File.Exists(exePath))
                    {
                        return exePath;
                    }
                }
            }
        }
        catch (Exception e)
        {
            TaskControl.Logger.LogWarning(e, "从注册表和启动器查找游戏路径失败");
        }

        return null;
    }

    [GeneratedRegex(@"game_install_path=(.+)")]
    private static partial Regex GameInstallPathRegex();

    [GeneratedRegex(@"game_start_name=(.+)")]
    private static partial Regex GameStartNameRegex();
}