using PWAppUpdater.FTP;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace PWAppUpdater
{
    class Updater
    {
        public static void Update(string installPath, ProgressBar progress, Label stepInfo, string tempPath = "")
        {
            try
            {

                progress.PerformStep();
                stepInfo.Text = "Creating temp directories...";
                stepInfo.Update();
                if (tempPath == "")
                {
                    tempPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
                    tempPath = Path.Combine(tempPath, "PWAPP\\Temp");
                }
                progress.PerformStep();
                if (!Directory.Exists(tempPath))
                {
                    Directory.CreateDirectory(tempPath);
                }
                progress.PerformStep();
                stepInfo.Text = "Downloading update...";
                stepInfo.Update();
                FTP.FTPManager ftpManager = new FTPManager("ftp://waws-prod-blu-109.ftp.azurewebsites.windows.net/", "patientweb\\$patientweb", "vHBnkgxPDS4Q410eehaFlXb8DH67QW50m9Rsxf1omXyYWRDgYioWJL63Tagp");
                ftpManager.DownloadFile("pwapp/current/Release.zip", tempPath + "\\Release.zip");
                progress.PerformStep();
                stepInfo.Text = "Removing old installation...";
                stepInfo.Update();
                progress.PerformStep();
                stepInfo.Text = "Creating new install directory...";
                stepInfo.Update();
                Directory.CreateDirectory(installPath);
                progress.PerformStep();
                stepInfo.Text = "Unpacking update...";
                stepInfo.Update();
                Zip.ZipManager.UnZip(tempPath + "\\Release.zip", installPath, true);
                progress.PerformStep();
                stepInfo.Text = "Cleaning up installation...";
                stepInfo.Update();
                Directory.Delete(tempPath, true);
                progress.PerformStep();

                stepInfo.Text = "Complete!";
                stepInfo.Update();
            }
            catch (UnauthorizedAccessException)
            {
                MessageBox.Show("Updater does not have sufficent permissions to perform update. Please run with administrator privilages to continue.");
                throw new NoAuthException();
            }
            
        }
    }

    class NoAuthException : Exception { }

    class CouldNotFindInstallPathException : Exception
    {

    }
}