recommendation state

recommendation_engine.py

@@ -30,10 +30,25 @@ class Engine:
         filename = os.path.join(self.path, 'playlists.json')
         if os.path.exists(filename):
             with open(filename) as f:
-                self.playlists = json.loads(f.read())
+                self.playlists = json.load(f)
         else:
             self.playlists = []
 
+        filename = os.path.join(self.path, 'state.json')
+        if os.path.exists(filename):
+            with open(filename) as f:
+                self.state = json.load(f)
+        else:
+            self.state = {
+                'channels': {
+                    'keywords': {'locked': False, 'value': 7},
+                    'screenings': {'locked': False, 'value': 7},
+                    'random': {'locked': True, 'value': 2}
+                },
+                'keywords': {},
+            }
+        self.update_keywords()
+
     @property
     def pandora(self):
         while not self._pandora:
@@ -101,6 +116,20 @@ class Engine:
             'name': video['name']
         } for video in videos]
 
+    def update_state(self, data):
+        for key in data:
+            if key in self.state:
+                self.state[key].update(data[key])
+            else:
+                self.state[key] = data[key]
+        self.save_state()
+        return self.state
+
+    def save_state(self):
+        filename = os.path.join(self.path, 'state.json')
+        with open(filename, 'w') as f:
+            json.dump(self.state, f, indent=4, ensure_ascii=False, sort_keys=True)
+
     def update(self):
         # Get all storylines with tags
         storylines = [{
@@ -160,6 +189,21 @@ class Engine:
         } for storyline in storylines] if playlist['clips']]
         with open(os.path.join(self.path, 'playlists.json'), 'w') as f:
             f.write(json.dumps(self.playlists, indent=4, sort_keys=True))
+        self.update_keywords()
+
+    def update_keywords(self):
+        changed = False
+        if 'keywords' not in self.state:
+            self.state['keywords'] = {}
+            changed = True
+        for playlist in self.playlists:
+            for tag in playlist.get('tags', []):
+                if tag.islower() and tag not in self.state['keywords']:
+                    self.state['keywords'][tag] = {'value': 0}
+                    changed = True
+        if changed:
+            self.save_state()
+
 
     @run_async
     def update_async(self):

server.py

@@ -28,6 +28,10 @@ def api_task(request, engine, callback):
     try:
         if request['method'] == 'getVideos':
             result = engine.get_videos(request['params'])
+        elif request['method'] == 'getRecommendations':
+            result = engine.state
+        elif request['method'] == 'setRecommendations':
+            result = engine.update_state(request['params'])
         else:
             result = {}
         response = {
@@ -53,7 +57,7 @@ class RPCHandler(tornado.web.RequestHandler):
         request = None
         try:
             request = json.loads(self.request.body.decode())
-            if request['method'] not in ('getVideos', ):
+            if request['method'] not in ('getVideos', 'getRecommendations', 'setRecommendations'):
                 raise Exception('unknown method')
         except:
             error = {'error': {'code': -32700, 'message': 'Parse error'}}