Split models.py into several files (#398)

* Move exception models into separate file
* Move thread model into separate file
* Move user model into separate file
* Move group and room models into separate file
* Move page model into separate file
* Move message model into separate file
* Move basic attachment models into separate file
* Move sticker model into separate file
* Move location models into separate file
* Move file attachment models into separate file
* Move mention model to reside with message model
* Move quick reply models into separate file
* Move poll models into separate file
* Move plan model into separate file
* Move active status model to reside with user model
* Move core enum model into separate file
* Move thread-related enums to reside with thread model
* Move typingstatus model to reside with user model
* Move emojisize and reaction enums to reside wtih message model

fbchat/_plan.py

@@ -0,0 +1,46 @@
+# -*- coding: UTF-8 -*-
+from __future__ import unicode_literals
+
+
+class Plan(object):
+    #: ID of the plan
+    uid = None
+    #: Plan time (unix time stamp), only precise down to the minute
+    time = None
+    #: Plan title
+    title = None
+    #: Plan location name
+    location = None
+    #: Plan location ID
+    location_id = None
+    #: ID of the plan creator
+    author_id = None
+    #: List of the people IDs who will take part in the plan
+    going = None
+    #: List of the people IDs who won't take part in the plan
+    declined = None
+    #: List of the people IDs who are invited to the plan
+    invited = None
+
+    def __init__(self, time, title, location=None, location_id=None):
+        """Represents a plan"""
+        self.time = int(time)
+        self.title = title
+        self.location = location or ""
+        self.location_id = location_id or ""
+        self.author_id = None
+        self.going = []
+        self.declined = []
+        self.invited = []
+
+    def __repr__(self):
+        return self.__unicode__()
+
+    def __unicode__(self):
+        return "<Plan ({}): {} time={}, location={}, location_id={}>".format(
+            self.uid,
+            repr(self.title),
+            self.time,
+            repr(self.location),
+            repr(self.location_id),
+        )