added Offline Mode

JohnCoates · Oct 31, 2015 · 5b1be6c · 5b1be6c
1 parent 545db76
commit 5b1be6c
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Showing 3 changed files with 38 additions and 1 deletion.
diff --git a/Aerial/Source/Models/AerialVideo.swift b/Aerial/Source/Models/AerialVideo.swift
@@ -17,6 +17,12 @@ class AerialVideo {
     let url:NSURL;
     var arrayPosition:Int = 1;
 
+    var isAvailableOffline:Bool {
+        get {
+            return VideoCache.isVideoAvailableOffline(self);
+        }
+    }
+
 
     init(id:String, name:String, type:String, timeOfDay:String, url:String) {
         self.id = id;

diff --git a/Aerial/Source/Models/Cache/VideoCache.swift b/Aerial/Source/Models/Cache/VideoCache.swift
@@ -63,6 +63,24 @@ class VideoCache {
         }
     }
 
+    static func isVideoAvailableOffline(video:AerialVideo) -> Bool {
+        guard let appCacheDirectory = VideoCache.cacheDirectory else {
+            return false;
+        }
+
+        guard let filename = video.url.lastPathComponent else {
+            NSLog("Aerial Error: Couldn't get filename from URL for cache.");
+            return false;
+        }
+
+        let videoCachePath = appCacheDirectory.stringByAppendingPathComponent(filename);
+
+        let fileManager = NSFileManager.defaultManager()
+
+
+        return fileManager.fileExistsAtPath(videoCachePath)
+    }
+
     init(URL:NSURL) {
         videoData = NSData()
         loading = true

diff --git a/Aerial/Source/Models/ManifestLoader.swift b/Aerial/Source/Models/ManifestLoader.swift
@@ -18,6 +18,7 @@ class ManifestLoader {
     var callbacks = [manifestLoadCallback]();
     var loadedManifest = [AerialVideo]();
     var playedVideos = [AerialVideo]();
+    var offlineMode:Bool = false
 
     func addCallback(callback:manifestLoadCallback) {
         if (loadedManifest.count > 0) {
@@ -33,6 +34,7 @@ class ManifestLoader {
         let shuffled = loadedManifest.shuffle();
 
         for video in shuffled {
+            // check if this video id has been disabled in preferences
             let possible = defaults.objectForKey(video.id);
 
             if let possible = possible as? NSNumber {
@@ -41,6 +43,13 @@ class ManifestLoader {
                 }
             }
 
+            // check if we're in offline mode
+            if offlineMode == true {
+                if video.isAvailableOffline == false {
+                    continue;
+                }
+            }
+
             return video;
         }
 
@@ -71,7 +80,10 @@ class ManifestLoader {
 
         };
         let url = NSURL(string: "http://a1.phobos.apple.com/us/r1000/000/Features/atv/AutumnResources/videos/entries.json");
-        let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler:completionHandler);
+        // use ephemeral session so when we load json offline it fails and puts us in offline mode
+        let configuration = NSURLSessionConfiguration.ephemeralSessionConfiguration()
+        let session = NSURLSession(configuration: configuration)
+        let task = session.dataTaskWithURL(url!, completionHandler:completionHandler);
         task.resume();
     }
 
@@ -81,6 +93,7 @@ class ManifestLoader {
             return;
         }
 
+        offlineMode = true;
         readJSONFromData(savedJSON)
     }