using System.Text.Json;

namespace MatrixImageEditor;

internal static class Program
{
    [STAThread]
    private static int Main(string[] args)
    {
        try
        {
            if (args.Length > 0)
            {
                return RunCommand(args);
            }
            ApplicationConfiguration.Initialize();
            Application.Run(new MainForm());
            return 0;
        }
        catch (Exception exception)
        {
            if (Environment.UserInteractive && args.Length == 0)
            {
                AppDialog.Error(null, exception.Message, "镜像配置编辑器");
            }
            else
            {
                Console.Error.WriteLine(exception.Message);
            }
            return 1;
        }
    }

    private static int RunCommand(string[] args)
    {
        if (args is ["--validate", var image])
        {
            var config = ImageOperations.ReadConfig(image);
            var publicInfo = new
            {
                valid = true,
                config.SoftwareVersion,
                config.Account.Username,
                config.Wifi.Ssid,
                config.Ipv4.Mode,
                config.Ipv4.Address,
            };
            Console.WriteLine(JsonSerializer.Serialize(publicInfo));
            return 0;
        }
        if (args is ["--apply", var source, var configPath, var destination])
        {
            var sourcePath = ImagePathRules.ValidateExistingImage(source);
            var destinationPath = ImagePathRules.ValidateNewDestination(sourcePath, destination);
            var config = ImageConfigCodec.Deserialize(File.ReadAllText(configPath));
            _ = ImageOperations.ReadConfig(sourcePath);
            try
            {
                File.Copy(sourcePath, destinationPath, overwrite: false);
                ImageOperations.WriteConfig(destinationPath, config);
                ImageOperations.WriteSha256(destinationPath, null);
                _ = ImageOperations.ReadConfig(destinationPath);
            }
            catch (Exception exception)
            {
                var cleanupError = ImagePathRules.CleanupNewDestination(destinationPath);
                if (cleanupError is not null) throw new IOException($"{exception.Message}\n清理失败：{cleanupError}", exception);
                throw;
            }
            Console.WriteLine(destinationPath);
            return 0;
        }
        Console.Error.WriteLine("用法：镜像配置编辑器.exe [--validate 镜像 | --apply 原镜像 配置.json 新镜像]");
        return 2;
    }
}