using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace Phihong_EVSE_UI_Tool
{
    public static class Utility
    {
        public const string BG_PARENTFOLDER = @"Background\";

        public const string BG_INITIAL = "0_init.bmp";
        public const string BG_IDLE = "1_idle.bmp";
        public const string BG_VERIFY = "2_verify.bmp";
        public const string BG_VERIFYOK = "3_carChkok.bmp";
        public const string BG_VERIFYFAIL = "4_chkfail.bmp";
        public const string BG_PLUG = "5_plug.bmp";
        public const string BG_PRECHARGE = "6_precharge.bmp";
        public const string BG_CHARGING = "7_charging.bmp";
        public const string BG_COMPLETE = "8_complete.bmp";
        public const string BG_MAINTAIN = "9_fix.bmp";

        public const string ICO_PARENTFOLDER = @"ICO\";

        public const string ICO_LOGO = "10_logo.bmp";
        public const string ICO_NAME = "60.ICO";

        public static readonly string OUTPUT_DIRECTORY = Environment.CurrentDirectory + @"\Output\";
        public static readonly string CUSTOM_DIRECTORY = Environment.CurrentDirectory + @"\CustomTemp\";

        public static void CopyFileFromResource(Uri uriString, string destPath)
        {
            using (var resource = Application.GetResourceStream(uriString).Stream)
            {
                using (var file = new FileStream(destPath, FileMode.Create, FileAccess.Write))
                {
                    resource.CopyTo(file);
                }
            }
        }

        public static void LoadImageFromPath(Image imgControl, string path)
        {
            FileStream fstream = new FileStream(path, FileMode.Open);

            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.StreamSource = fstream;
            bitmap.CacheOption = BitmapCacheOption.OnLoad;
            bitmap.EndInit();
            fstream.Close();

            imgControl.BeginInit();
            imgControl.Source = bitmap;
            imgControl.EndInit();
        }

        public static bool IsBackgroundImageSizeQualified(string path)
        {
            FileStream fstream = new FileStream(path, FileMode.Open);

            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.StreamSource = fstream;
            bitmap.CacheOption = BitmapCacheOption.OnLoad;
            bitmap.EndInit();
            fstream.Close();

            if (bitmap.PixelWidth != 800 || bitmap.PixelHeight != 480)
            {
                return false;
            }

            return true;
        }

        public static bool IsIcoImageSizeQualified(string path)
        {
            FileStream fstream = new FileStream(path, FileMode.Open);

            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.StreamSource = fstream;
            bitmap.CacheOption = BitmapCacheOption.OnLoad;
            bitmap.EndInit();
            fstream.Close();

            if (bitmap.PixelWidth > 255 || bitmap.PixelHeight > 255)
            {
                return false;
            }

            return true;
        }

        public static bool IsIcoLogoSizeQualified(string path)
        {
            FileStream fstream = new FileStream(path, FileMode.Open);

            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.StreamSource = fstream;
            bitmap.CacheOption = BitmapCacheOption.OnLoad;
            bitmap.EndInit();
            fstream.Close();

            if (bitmap.PixelWidth != 186 || bitmap.PixelHeight != 34)
            {
                return false;
            }

            return true;
        }

        public static void ConvertToBitmap565Array(string path, out int width, out int height, out byte[] pixels)
        {
            FileStream fstream = new FileStream(path, FileMode.Open);

            BitmapImage bitmap = new BitmapImage();
            bitmap.BeginInit();
            bitmap.StreamSource = fstream;
            bitmap.CacheOption = BitmapCacheOption.OnLoad;
            bitmap.EndInit();
            fstream.Close();

            FormatConvertedBitmap newFormated = new FormatConvertedBitmap();
            newFormated.BeginInit();
            newFormated.Source = bitmap;
            newFormated.DestinationFormat = PixelFormats.Bgr565;
            newFormated.EndInit();

            width = newFormated.PixelWidth;
            height = newFormated.PixelHeight;

            var stride = (newFormated.PixelWidth * newFormated.Format.BitsPerPixel + 7) / 8;
            pixels = new byte[newFormated.PixelHeight * stride];
            newFormated.CopyPixels(pixels, stride, 0);

            for (int i = 0; i < pixels.Length; i += 2)
            {
                byte temp = pixels[i];
                pixels[i] = pixels[i + 1];
                pixels[i + 1] = temp;
            }
        }
    }
}