add load methddos

src/feed/feed.py

@@ -14,12 +14,39 @@ class Feed:
         self.config_path = None
         self.feed_folder_path = None
         self.feed_config = None
+        self.feed_file_path = None
+        self.serializer = None
         self.setup_feed(feed_name, feed_type, link_type, feed_url)
 
     def load_feed(self):
         assert self.feed_config is not None
         return feedparser.parse(self.feed_config["FeedUrl"])
 
+    def load_new_feed(self):
+        assert (not os.path.exists(self.feed_file_path))
+        assert (self.serializer is not None)
+        feed_file = FeedFile(self.feed_file_path)
+        feed_file.write_feed_json_file(self.load_feed(), self.serializer)
+
+    def load_existing_feed(self):
+
+        assert (os.path.exists(self.feed_file_path))
+        assert (self.serializer is not None)
+
+        tmp_feed_file = FeedFile(self.feed_file_path + "tmp")
+        tmp_feed_file.write_feed_json_file(self.load_feed(), self.serializer)
+
+        feed_file = FeedFile(self.feed_file_path)
+
+        if tmp_feed_file.read_feed_file() == feed_file.read_feed_file():
+            feed_file.write_json_file(self.feed_file_path)
+        tmp_feed_file.check_and_remove_file()
+
+    def get_serializer(self):
+        return {
+            "podcast": PodcastSerializer(self.feed_config["LinkType"])
+        }.get(self.feed_config["FeedType"], PodcastSerializer(self.feed_config["LinkType"]))
+
     def setup_feed(self, feed_name, feed_type, link_type, feed_url):
         assert feed_name is not None
         assert feed_type is not None
@@ -31,6 +58,9 @@ class Feed:
         if os.path.exists(self.config_path) is False:
             self.write_feed_config_file()
 
+        self.feed_file_path = self.feed_folder_path+"/"+self.feed_config["FeedName"]+".json"
+        self.serializer = self.get_serializer()
+
     def new_feed_folder(self):
 
         if self.feed_folder_path is None: