public string GetPictureUrl(Media picture, int width = 0, int height = 0, bool returnDefaultIfNotFound = false)
{
if (picture == null)
{
return(returnDefaultIfNotFound ? ApplicationEngine.MapUrl(ApplicationConfig.DefaultImagePath, true) : null);
}
var serveFileDirectory = ServerHelper.MapPath(ApplicationConfig.MediaServeDirectory, true);
//abc
var fileNameWithoutExtension = _localFileProvider.GetFileNameWithoutExtension(picture.SystemName);
//.jpg
var extension = _localFileProvider.GetExtension(picture.SystemName);
//abc_150_150.jpg
var fileName = string.Format(PictureFileNameFormat, fileNameWithoutExtension, width, height, extension);
//c:\\www\\abc_150_150.jpg
var fileNameWithDirectory = _localFileProvider.CombinePaths(serveFileDirectory, fileName);
if (_localFileProvider.FileExists(fileNameWithDirectory))
{
return(ApplicationEngine.MapUrl(fileNameWithDirectory)); // /abc_150_150.jpg
}
//we'll need to create a file
//first resize the image from actual file
var mediaFileDirectory = ServerHelper.MapPath(ApplicationConfig.MediaDirectory, true);
var originalFile = _localFileProvider.CombinePaths(mediaFileDirectory, picture.SystemName);
//does the original file exist?
if (!_localFileProvider.FileExists(originalFile))
{
return(returnDefaultIfNotFound ? ApplicationEngine.MapUrl(ApplicationConfig.DefaultImagePath, true) : null);
}
//read original file
var originalFileBytes = _localFileProvider.ReadBytes(originalFile);
//resize the image
var resizedBytes = _imageProcessor.ResizeImage(originalFileBytes, width, height);
//write this to disk
var resizedFileName = SafeWriteBytesToFile(fileName, serveFileDirectory, resizedBytes);
fileNameWithDirectory = _localFileProvider.CombinePaths(serveFileDirectory, resizedFileName);
//now return
return(ApplicationEngine.MapUrl(fileNameWithDirectory)); // /abc_150_150.jpg
}
