Add bfxapi/websocket/manager.py file. Separate channel handlers from BfxWebsocketClient.py to manager.py. Fix bug in subscribe method.

bfxapi/websocket/manager.py

@@ -0,0 +1,29 @@
+from .channels import Channels
+
+class Manager(object):
+    def __init__(self, event_emitter):
+        self.event_emitter = event_emitter
+
+        self.__handlers = {
+            Channels.TICKER: self.__ticker_channel_handler,
+            Channels.TRADES: self.__trades_channel_handler,
+            Channels.BOOK: self.__book_channel_handler
+        }
+
+    def handle(self, subscription, *parameters):
+        return self.__handlers[subscription["channel"]](subscription, *parameters)
+
+    def __ticker_channel_handler(self, subscription, *parameters):
+        self.event_emitter.emit("ticker", subscription, parameters[0])
+
+    def __trades_channel_handler(self, subscription, *parameters):
+        if len(parameters) == 1:
+            self.event_emitter.emit("trades_snapshot", subscription, parameters[0])
+
+        if len(parameters) == 2:
+            self.event_emitter.emit("trades_update", subscription, parameters[0], parameters[1])
+
+    def __book_channel_handler(self, subscription, *parameters):
+        if all(isinstance(element, list) for element in parameters[0]):
+            self.event_emitter.emit("book_snapshot", subscription, parameters[0])
+        else: self.event_emitter.emit("book_update", subscription, parameters[0])