using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media.Imaging;
using System.Windows;
using PDF_Office.Model.EditTools.Background;
using PDF_Office.Model.EditTools.Watermark;

namespace PDF_Office.Helper
{
    public static class EditToolsHelper
    {
        public static byte[] ConvertColor(string color)
        {
            byte[] rgb_array = new byte[] { 0, 0, 0 };
            rgb_array[0] = (byte)(color[1] * 15 + color[2]);
            rgb_array[1] = (byte)(color[3] * 15 + color[4]);
            rgb_array[2] = (byte)(color[5] * 15 + color[6]);
            return rgb_array;
        }

        public static void ChooseFile(string filePath,ref BackgroundInfo backgroundInfo)
        {
            using (FileStream fileData = File.OpenRead(filePath))
            {
                string fileExt = Path.GetExtension(filePath).ToLower();
                BitmapFrame frame = null;
                BitmapDecoder decoder = BitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                if (decoder != null && decoder.Frames.Count > 0)
                {
                    frame = decoder.Frames[0];
                }
                if (frame != null)
                {
                    backgroundInfo.ImageArray = new byte[frame.PixelWidth * frame.PixelHeight * 4];
                    backgroundInfo.ImageWidth = frame.PixelWidth;
                    backgroundInfo.ImageHeight = frame.PixelHeight;
                    frame.CopyPixels(backgroundInfo.ImageArray, frame.PixelWidth * 4, 0);
#if DEBUG
                    Trace.WriteLine("width :" + backgroundInfo.ImageWidth);
                    Trace.WriteLine("height :" + backgroundInfo.ImageHeight);
#endif
                }
            }
        }

        public static void ChooseFile(string filePath, ref WatermarkInfo watermarkInfo)
        {
            using (FileStream fileData = File.OpenRead(filePath))
            {
                string fileExt = Path.GetExtension(filePath).ToLower();
                BitmapFrame frame = null;
                BitmapDecoder decoder = BitmapDecoder.Create(fileData, BitmapCreateOptions.None, BitmapCacheOption.Default);
                if (decoder != null && decoder.Frames.Count > 0)
                {
                    frame = decoder.Frames[0];
                }
                if (frame != null)
                {
                    watermarkInfo.ImageArray = new byte[frame.PixelWidth * frame.PixelHeight * 4];
                    watermarkInfo.ImageWidth = frame.PixelWidth;
                    watermarkInfo.ImageHeight = frame.PixelHeight;
                    frame.CopyPixels(watermarkInfo.ImageArray, frame.PixelWidth * 4, 0);
#if DEBUG
                    Trace.WriteLine("width :" + watermarkInfo.ImageWidth);
                    Trace.WriteLine("height :" + watermarkInfo.ImageHeight);
#endif
                }
            }
        }
    }
}