using System;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.IO;
using System.ComponentModel;
using System.Windows.Forms;
using System.Net;

namespace scoreboardManager
{
    public partial class Startup : Window
    {
        private CheckDataUpdates checkDataUpdates = new CheckDataUpdates();
        private string settingsPath = "";
        private string teamDatabasePath = "";
        private string studioURL = "http://studio.cbtg.us/scoreman/login.php";
        private string userDocumentPath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "/scoreman/";
        //Username: MrTest Pass: Chrisdw1945!
        public Startup()
        {
            InitializeComponent();//XAML built in initalization
            AppInitalize();
        }
        private void AppInitalize()
        {
            //---------------Check connection
            if (CheckInternetConnection(studioURL) == false)
                return;
            //---------------Check if the directory exists
            if (Directory.Exists(userDocumentPath))
                settingsPath = userDocumentPath + "scoreman.ini";
            else
            {
                DirectoryInfo basePath = System.IO.Directory.CreateDirectory(userDocumentPath);
                settingsPath = basePath + "scoreman.ini";
            }
            //---------------Check if the scoreman.ini exists
            if (!File.Exists(settingsPath))
            {
                System.Windows.Forms.MessageBox.Show("Please Select a path containing the Team Database");
                using (FolderBrowserDialog folderBrowserDialog = new FolderBrowserDialog())
                {
                    DialogResult folderBrowserDialogResult = folderBrowserDialog.ShowDialog();

                    if (folderBrowserDialogResult == System.Windows.Forms.DialogResult.OK && !string.IsNullOrEmpty(folderBrowserDialog.SelectedPath))
                        teamDatabasePath = folderBrowserDialog.SelectedPath;
                    else
                        System.Windows.Forms.MessageBox.Show("Team Data not found! Must be a root folder containing teamData and teamLogos, Configure this under the options menu.");
                }
                using (StreamWriter f = File.CreateText(settingsPath))
                {
                    f.WriteLine(settingsPath);//path
                    f.WriteLine(teamDatabasePath);//team path
                    f.WriteLine("");//username
                    f.WriteLine("");//password
                }
            }
            //---------------Read scoreman.ini
            using (StreamReader sr = new StreamReader(settingsPath))
            {
                string[] lines = { sr.ReadLine(), sr.ReadLine(), sr.ReadLine(), sr.ReadLine() };// 0 = settingsPath, 1 = teamDatabasePath, 2 = username, 3 = password

                if (string.IsNullOrEmpty(lines[1]))
                    System.Windows.MessageBox.Show("Team Data could not be found, please re-assign these paths");

                if (lines[1] != " ")
                    TeamData_Path_Input.Text = lines[1];

                if (!String.IsNullOrEmpty(lines[2]) || !String.IsNullOrEmpty(lines[3]))
                {
                    Username.Text = lines[2];
                    Password.Text = lines[3];
                }
            }
            ApplicationLogIn(true);
        }
        private void ApplyChangesToINI()
        {
            using (StreamWriter writer = new StreamWriter(File.Open(settingsPath, FileMode.Truncate)))
            {
                writer.Flush();
                writer.WriteLine(settingsPath);
                writer.WriteLine(TeamData_Path_Input.Text);
                if (RememberLogin.IsChecked == true)
                {
                    writer.WriteLine(Username.Text);
                    writer.WriteLine(Password.Text);
                }
                writer.Close();
            }
        }
        private bool VerifyAccountOnServer(string url, string user, string pass, bool startingUp)
        {
            WebRequest request = WebRequest.Create(url);
            string postData = "user_name=" + user;
            postData += "&user_password=" + pass;
            byte[] data = Encoding.ASCII.GetBytes(postData);

            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = data.Length;

            using (Stream stream = request.GetRequestStream())
                stream.Write(data, 0, data.Length);

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

            if (responseString == "0")
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Missing Password");
                return false;
            }
            else if (responseString == "1")
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Missing Username");
                return false;
            }
            else if (responseString == "2")
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Wrong Password");
                return false;
            }
            else if (responseString == "3")
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Wrong Username");
                return false;
            }
            else if (responseString == "4")
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Database error, contact your administrator");
                return false;
            }
            else
            {
                if (!startingUp)
                    System.Windows.Forms.MessageBox.Show("Login Sucessful");//sucess = parse out comments, turn into array ( 5, {username}, {apikey} )
                return true;
            }
        }
        private void ApplicationLogIn (bool startup)
        {
            ApplyChangesToINI();
            if (VerifyAccountOnServer(studioURL, Username.Text, Password.Text, startup))
            {
                Login_Barrier.Visibility = Visibility.Hidden;
                RememberLogin.IsChecked = true;
                LoginIdentifer.Content = "Connected";
            }
            else
            {
                LoginIdentifer.Content = "Login Failed";
                Login_Barrier.Visibility = Visibility.Visible;
            }
        }
        private static bool CheckInternetConnection(string url)
        {
            try
            {
                using (var client = new WebClient())
                {
                    using (client.OpenRead(url))
                        return true;
                }
            }
            catch
            {
                System.Windows.Forms.MessageBox.Show("Unable to establish connection with server, please check your internet connection.", "Error");
                return false;
            }
        }
        //------------LINK OUR FUNCTIONS TO XAML FUNCTIONS--------------
        protected override void OnClosing(CancelEventArgs e)
        {
            if(SportSelection.SelectedIndex == 0) //if there is no sport selected go ahead and close the app fully
            {
                DialogResult confirmation = System.Windows.Forms.MessageBox.Show("Are you sure you want to quit?", " Qutting", MessageBoxButtons.YesNo);
                if (confirmation == System.Windows.Forms.DialogResult.Yes)
                {
                    System.Windows.Application.Current.Shutdown();
                    e.Cancel = false;
                }
                else if (confirmation == System.Windows.Forms.DialogResult.No)
                    e.Cancel = true;
            }
        }
        private void Browse_TeamData_Click(object sender, RoutedEventArgs e)
        {
            FolderBrowserDialog fb1 = new FolderBrowserDialog();
            DialogResult r1 = fb1.ShowDialog();

            if (r1 == System.Windows.Forms.DialogResult.Cancel)
                TeamData_Path_Input.Text = TeamData_Path_Input.Text;
            else if (r1 == System.Windows.Forms.DialogResult.Yes)
            {
                TeamData_Path_Input.Text = fb1.SelectedPath;
                ApplyChangesToINI();
            }
        }
        private void CheckUpdates_Click(object sender, RoutedEventArgs e) { checkDataUpdates.Show(); }
        private void SportSelection_SelectionChanged(object sender, SelectionChangedEventArgs e) { MainWindow mw = new MainWindow(); mw.Show(); Close(); }
        private void LogOn_Click(object sender, RoutedEventArgs e) { ApplicationLogIn(false); }
    }
}