using System.Text;
using CVRManager.Models;

namespace CVRManager.Services;

public static class AppManifest
{
    public static string LocalBuildId(InstallInfo i)
    {
        try
        {
            var path = Paths.Manifest(i);
            if (!File.Exists(path)) return "";
            return Vdf.ParseDocument(File.ReadAllText(path)).Dict("AppState")?.Str("buildid") ?? "";
        }
        catch { return ""; }
    }

    public static string LocalBranch(InstallInfo i)
    {
        try
        {
            var path = Paths.Manifest(i);
            if (!File.Exists(path)) return "";
            var key = Vdf.ParseDocument(File.ReadAllText(path)).Dict("AppState")?.Dict("UserConfig")?.Str("BetaKey") ?? "";
            return key.Length == 0 ? "public" : key;
        }
        catch { return ""; }
    }

    public static void Write(string gameDir, string buildId, string branch)
    {
        var dir = Path.Combine(gameDir, "steamapps");
        Directory.CreateDirectory(dir);
        var sb = new StringBuilder();
        sb.AppendLine("\"AppState\"");
        sb.AppendLine("{");
        sb.AppendLine($"\t\"appid\"\t\t\"{Paths.AppId}\"");
        sb.AppendLine("\t\"Universe\"\t\t\"1\"");
        sb.AppendLine("\t\"name\"\t\t\"ChilloutVR\"");
        sb.AppendLine("\t\"StateFlags\"\t\t\"4\"");
        sb.AppendLine($"\t\"installdir\"\t\t\"{Path.GetFileName(gameDir)}\"");
        sb.AppendLine($"\t\"buildid\"\t\t\"{buildId}\"");
        sb.AppendLine("\t\"UserConfig\"");
        sb.AppendLine("\t{");
        sb.AppendLine("\t\t\"language\"\t\t\"english\"");
        sb.AppendLine($"\t\t\"BetaKey\"\t\t\"{branch}\"");
        sb.AppendLine("\t}");
        sb.AppendLine("\t\"MountedConfig\"");
        sb.AppendLine("\t{");
        sb.AppendLine($"\t\t\"BetaKey\"\t\t\"{branch}\"");
        sb.AppendLine("\t}");
        sb.AppendLine("}");
        var file = Path.Combine(dir, $"appmanifest_{Paths.AppId}.acf");
        File.WriteAllText(file + ".tmp", sb.ToString());
        File.Move(file + ".tmp", file, true);
    }
}