using Microsoft.Extensions.Options;
using System.Application.Models;
using System.Application.Properties;
using System.Application.UI;
using System.Diagnostics;
using System.IO;
using System.Text;
using static System.Application.Services.IAppUpdateService;

namespace System.Application.Services.Implementation
{
    public abstract class DesktopAppUpdateServiceImpl : AppUpdateServiceImpl
    {
        public DesktopAppUpdateServiceImpl(IToast toast, ICloudServiceClient client, IOptions<AppSettings> options) : base(toast, client, options)
        {
        }

        protected override Version OSVersion => Environment.OSVersion.Version;

        protected sealed override void OpenInAppStore() => throw new NotImplementedException();

        protected abstract void OnExit();

        protected override void OverwriteUpgrade(string fileName)
        {
            var dirPath = Path.Combine(AppContext.BaseDirectory, Path.GetFileNameWithoutExtension(fileName));

            if (Directory.Exists(dirPath))
            {
                Directory.Delete(dirPath, true);
            }

            CurrentProgressValue = 0;

            void OnReport(float value) => CurrentProgressValue = value;

            if (TarGZipHelper.Unpack(fileName, dirPath, progress: new Progress<float>(OnReport)))
            {
                ClearProgressValue(MaxProgressValue);

                IOPath.FileTryDelete(fileName);

                OnExit();

                var updateCommandPath = Path.Combine(AppContext.BaseDirectory, "update.cmd");
                IOPath.FileIfExistsItDelete(updateCommandPath);

                var updateCommand = string.Format(
                    SR.ProgramUpdateCmd_,
                    AppHelper.ProgramName,
                    dirPath,
                    AppContext.BaseDirectory,
                    AppHelper.ProgramName);

                File.WriteAllText(updateCommandPath, updateCommand, Encoding.Default);

                using var p = new Process();
                p.StartInfo.FileName = updateCommandPath;
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.CreateNoWindow = true; // 不显示程序窗口
                p.StartInfo.Verb = "runas"; // 管理员权限运行
                p.Start(); // 启动程序
            }
            else
            {
                toast.Show(SR.UpdateUnpackFail);
                ClearProgressValue(MaxProgressValue);
            }
        }
    }
}