Add model class

model.json

@@ -0,0 +1 @@
+{"bar": "foo", "foo": 3, "test": 4}

model.py

@@ -0,0 +1,64 @@
+import random
+import base64
+import json
+import os
+import datetime
+
+
+class Model:
+    def __init__(self, filename = "model.json"):
+        self.filename = filename
+        self.sessions = None
+        if os.path.isfile(filename):
+            with open(filename) as f:
+                try:
+                    self.sessions = json.load(f)
+                except:
+                    self.sessions = {}
+        else:
+            self.sessions = {}
+    
+    def handle_post(self, data):
+        pass
+        # handle post request data
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exception_type, exception_value, traceback):
+        if not (exception_type or exception_value or traceback):
+            with open(self.filename, "w") as f:
+                json.dump(self.sessions, f)
+        if not os.path.isdir("backups"):
+            try:
+                os.mkdir("backups")
+            except FileExistsError:
+                print("backups is a file, no directory. Please delete yourself")
+        datestring = datetime.datetime.strftime(datetime.datetime.now(), "%Y-%m-%d-%H%M%S")
+        with open(f"backups/{datestring}_{self.filename}", "w") as f:
+            json.dump(self.sessions, f)
+
+
+
+    def create_session(self) -> str:
+        sessionname = base64.b32encode(bytearray(random.randint(0, 0xFF) for _ in range(10)))[:16].decode().lower()
+        self.sessions[sessionname] = {}
+        return sessionname
+
+    def subscribe(self, clientid, socket):
+        pass
+        # todo subscribe socket, match with id
+        
+    
+    def unsubscribe(self, socket):
+        pass
+        # remove socket from all clients
+
+
+
+        
+
+    """
+new session : ()
+add player : uuid
+"""