Avoid storing images in the database

Limelight/Network/AppAssetManager.h

@@ -21,5 +21,6 @@
 - (id) initWithCallback:(id<AppAssetCallback>)callback;
 - (void) retrieveAssetsFromHost:(TemporaryHost*)host;
 - (void) stopRetrieving;
++ (NSString*) boxArtPathForApp:(TemporaryApp*)app;
 
 @end

Limelight/Network/AppAssetManager.m

@@ -19,6 +19,22 @@
 
 static const int MAX_REQUEST_COUNT = 4;
 
++ (NSString*) boxArtPathForApp:(TemporaryApp*)app {
+    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
+    NSString *filePath = [paths objectAtIndex:0];
+    
+    // Keep app assets separate by host UUID
+    filePath = [filePath stringByAppendingPathComponent:app.host.uuid];
+    
+    // Use the app ID as the file name
+    filePath = [filePath stringByAppendingPathComponent:app.id];
+    
+    // Add a png extension
+    filePath = [filePath stringByAppendingPathExtension:@"png"];
+    
+    return filePath;
+}
+
 - (id) initWithCallback:(id<AppAssetCallback>)callback {
     self = [super init];
     _callback = callback;
@@ -30,7 +46,7 @@ static const int MAX_REQUEST_COUNT = 4;
 
 - (void) retrieveAssetsFromHost:(TemporaryHost*)host {
     for (TemporaryApp* app in host.appList) {
-        if (app.image == nil) {
+        if (![[NSFileManager defaultManager] fileExistsAtPath:[AppAssetManager boxArtPathForApp:app]]) {
             AppAssetRetriever* retriever = [[AppAssetRetriever alloc] init];
             retriever.app = app;
             retriever.host = host;

Limelight/Network/AppAssetRetriever.m

@@ -18,25 +18,24 @@ static const double RETRY_DELAY = 2; // seconds
 static const int MAX_ATTEMPTS = 5;
 
 - (void) main {
-
-    OSImage* appImage = nil;
-    
     int attempts = 0;
-    while (![self isCancelled] && appImage == nil && attempts++ < MAX_ATTEMPTS) {
-        
+    while (![self isCancelled] && attempts++ < MAX_ATTEMPTS) {
         HttpManager* hMan = [[HttpManager alloc] initWithHost:_host.activeAddress uniqueId:[IdManager getUniqueId] deviceName:deviceName cert:[CryptoManager readCertFromFile]];
         AppAssetResponse* appAssetResp = [[AppAssetResponse alloc] init];
         [hMan executeRequestSynchronously:[HttpRequest requestForResponse:appAssetResp withUrlRequest:[hMan newAppAssetRequestWithAppId:self.app.id]]];
 
 #if TARGET_OS_IPHONE
-        appImage = [UIImage imageWithData:appAssetResp.data];
-        self.app.image = UIImagePNGRepresentation(appImage);
+        if (appAssetResp.data != nil) {
+            NSString* boxArtPath = [AppAssetManager boxArtPathForApp:self.app];
+            [[NSFileManager defaultManager] createDirectoryAtPath:[boxArtPath stringByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
+            [appAssetResp.data writeToFile:boxArtPath atomically:NO];
+            break;
+        }
 #else
         
 #endif
-
         
-        if (![self isCancelled] && appImage == nil) {
+        if (![self isCancelled]) {
             [NSThread sleepForTimeInterval:RETRY_DELAY];
         }
     }