-> Add ConsoleTools::fileExtensionFromContentType

-> Update cachePathForMediaURL with this new method

matrixConsole/API/ConsoleTools.h

@@ -29,6 +29,9 @@
 // largeFilesFirst: move the largest file to the list head (large > 100KB). It can be combined isTimeSorted
 + (NSArray*)listFiles:(NSString *)folderPath timeSorted:(BOOL)isTimeSorted largeFilesFirst:(BOOL)largeFilesFirst;
 
+// return the file extension from a contentType
++ (NSString*) fileExtensionFromContentType:(NSString*)contentType;
+
 // Image
 + (UIImage *)resize:(UIImage *)image toFitInSize:(CGSize)size;
 

matrixConsole/API/ConsoleTools.m

@@ -16,6 +16,8 @@
 
 #import "ConsoleTools.h"
 
+#import <MobileCoreServices/MobileCoreServices.h>
+
 @implementation ConsoleTools
 
 #pragma mark - Time interval
@@ -137,6 +139,47 @@
     }
 }
 
+// return the file extension from a contentType
++ (NSString*) fileExtensionFromContentType:(NSString*)contentType
+{
+    if (!contentType)
+    {
+        return @"";
+    }
+    
+    CFStringRef mimeType = (__bridge CFStringRef)contentType;
+    CFStringRef uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, mimeType, NULL);
+    
+    NSString* extension = (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass(uti, kUTTagClassFilenameExtension);
+    
+    CFRelease(uti);
+    
+    if (extension)
+    {
+        return [NSString stringWithFormat:@".%@", extension];
+    }
+    
+    // else undefined type
+    if ([contentType isEqualToString:@"application/jpeg"])
+    {
+        return @".jpg";
+    }
+    else  if ([contentType isEqualToString:@"audio/x-alaw-basic"])
+    {
+        return @".alaw";
+    }
+    else  if ([contentType isEqualToString:@"audio/x-caf"])
+    {
+        return @".caf";
+    }
+    else  if ([contentType isEqualToString:@"audio/aac"])
+    {
+        return @".aac";
+    }
+    
+    return @"";
+}
+
 #pragma mark - Image
 
 + (UIImage *)resize:(UIImage *)image toFitInSize:(CGSize)size {

matrixConsole/API/MediaManager.h

@@ -18,6 +18,7 @@
 #import "MediaLoader.h"
 
 extern NSString *const kMediaManagerPrefixForDummyURL;
+extern NSString *const kMediaManagerThumbnailDirectory;
 
 // notify when a media download is finished (object: URL)
 extern NSString *const kMediaDownloadDidFinishNotification;

matrixConsole/API/MediaManager.m

@@ -23,6 +23,8 @@ NSString *const kMediaManagerPrefixForDummyURL = @"dummyUrl-";
 NSString *const kMediaDownloadDidFinishNotification = @"kMediaDownloadDidFinishNotification";
 NSString *const kMediaDownloadDidFailNotification = @"kMediaDownloadDidFailNotification";
 
+NSString *const kMediaManagerThumbnailDirectory = @"kMediaManagerThumbnailDirectory";
+
 static NSString* mediaCachePath  = nil;
 static NSString *mediaDir        = @"mediacache";
 
@@ -126,22 +128,18 @@ static NSMutableDictionary* uploadTableById = nil;
 }
 
 + (NSString*)cachePathForMediaURL:(NSString*)mediaURL andType:(NSString *)mimeType {
-    NSString *fileName;
-    if ([mimeType isEqualToString:@"image/jpeg"]) {
-        fileName = [NSString stringWithFormat:@"ima%lu.jpg", (unsigned long)mediaURL.hash];
-    } else if ([mimeType isEqualToString:@"video/mp4"]) {
-        fileName = [NSString stringWithFormat:@"video%lu.mp4", (unsigned long)mediaURL.hash];
-    } else if ([mimeType isEqualToString:@"video/quicktime"]) {
-        fileName = [NSString stringWithFormat:@"video%lu.mov", (unsigned long)mediaURL.hash];
-    } else {
-        NSString *extension = @"";
-        NSArray *components = [mediaURL componentsSeparatedByString:@"."];
-        if (components && components.count > 1) {
-            extension = [components lastObject];
-        }
-        fileName = [NSString stringWithFormat:@"%lu.%@", (unsigned long)mediaURL.hash, extension];
+    
+    NSString* fileExt = [ConsoleTools fileExtensionFromContentType:mimeType];
+    NSString* fileBase = @"";
+    
+    // use the mime type to extract a base filename
+    if ([mimeType rangeOfString:@"/"].location != NSNotFound){
+        NSArray *components = [mimeType componentsSeparatedByString:@"/"];
+        fileBase = [components objectAtIndex:0];
     }
     
+    NSString *fileName = [NSString stringWithFormat:@"%@%lu%@", [fileBase substringToIndex:3], (unsigned long)mediaURL.hash, fileExt];
+    
     return [[MediaManager getCachePath] stringByAppendingPathComponent:fileName];
 }