//
//  Copyright 2012, Xamarin Inc.
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//        http://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
//
using System;
using System.IO.IsolatedStorage;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using System.Linq;

namespace EmployeeDirectory.WinPhone.Utilities
{
    public static class ImageUtilties
    {
		const string SharedDirectory = "Shared";
		const string SharedShellContentDirectory = SharedDirectory + "\\ShellContent";

		static ImageUtilties ()
		{
			var iso = IsolatedStorageFile.GetUserStoreForApplication ();
			if (!iso.DirectoryExists (SharedDirectory)) {
				iso.CreateDirectory (SharedDirectory);
			}

			if (!iso.DirectoryExists (SharedShellContentDirectory)) {
				iso.CreateDirectory (SharedShellContentDirectory);
			}
		}

        public static Uri SaveAsTile (this BitmapSource image, string key)
        {
			var safeKey = new string (key.Where (c => char.IsLetterOrDigit (c)).ToArray ());            

			var bmp = new WriteableBitmap (image);

			var path = SharedShellContentDirectory + "\\" + safeKey + ".jpg";

			var iso = IsolatedStorageFile.GetUserStoreForApplication ();
            using (var stream = iso.CreateFile (path)) {
                bmp.SaveJpeg (stream, 173, 173, 0, 90);
            }

			return new Uri ("isostore:/Shared/ShellContent/" + safeKey + ".jpg", UriKind.RelativeOrAbsolute);
        }
    }
}
