using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;

namespace SaveWizard_rewritten
{
    public partial class UpdateForm: Form
    {
        private static readonly string githubLink = "https://raw.githubusercontent.com/JDM170/SaveWizard/configs/";

        public UpdateForm()
        {
            InitializeComponent();
        }
        
        private static void CheckPath(string path)
        {
            string currentDirectory = Environment.CurrentDirectory;
            foreach (string unit in Regex.Split(path, "/"))
            {
                currentDirectory = Path.Combine(currentDirectory, unit);
                if (!unit.Contains(".json"))
                {
                    if (!Directory.Exists(currentDirectory))
                        Directory.CreateDirectory(currentDirectory);
                }
                else
                {
                    if (!File.Exists(currentDirectory))
                        File.WriteAllText(currentDirectory, "");
                }
            }
        }

        private void ProgressWindow_Load(object sender, EventArgs e)
        {
            backgroundWorker1.RunWorkerAsync();
        }

        private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            using (WebClient wb = new WebClient())
            {
                wb.Encoding = Encoding.UTF8;
                string responseInString = wb.DownloadString($"{githubLink}configs/version.cfg");
                Dictionary<string, string> result = JsonConvert.DeserializeObject<Dictionary<string, string>>(responseInString);
                string[] splitted;
                string path;
                foreach (KeyValuePair<string, string> unit in result)
                {
                    splitted = Regex.Split(unit.Key, "_");
                    path = $"configs/{splitted.GetValue(0)}/{splitted.GetValue(1)}.json";
                    CheckPath(path);
                    if (Utils.GenerateMD5(path) != unit.Value)
                    {
                        string newConfigText = wb.DownloadString($"{githubLink}{path}");
                        File.WriteAllText(Path.Combine(Environment.CurrentDirectory, path), newConfigText);
                    }
                    backgroundWorker1.ReportProgress(progressBar1.Value + 1);
                }
            }
        }

        private void backgroundWorker1_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e)
        {
            progressBar1.Value = e.ProgressPercentage;
            lbl_progress.Text = $"{e.ProgressPercentage}/6";
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e)
        {
            this.Close();
        }
    }
}