main code cleanup

main.py

@@ -14,19 +14,45 @@ from bfxbot.currency import Symbol
 from bfxbot.models import PositionWrapper, SymbolStatus, Event, EventKind
 from strategy import TrailingStopStrategy
 
+
+async def bot_loop():
+    await bot.start()
+
+    while True:
+        await bot.update()
+
+
+asyncio.new_event_loop()
+
+dotenv.load_dotenv()
+
+API_KEY = os.getenv("API_KEY")
+API_SECRET = os.getenv("API_SECRET")
+
 app = Flask(__name__)
 socketio = SocketIO(app, async_mode="threading")
-dotenv.load_dotenv()
-loop = asyncio.new_event_loop()
+bot = BfxBot(api_key=API_KEY, api_secret=API_SECRET,
+             symbols=[Symbol.BTC], tick_duration=20)
+bot.set_strategy(Symbol.BTC, TrailingStopStrategy())
+btc_eh = bot.event_handler(Symbol.BTC)
 
-bot: BfxBot = None
+# initializing and starting bot on other thread
+threading.Thread(target=lambda: asyncio.run(bot_loop())).start()
 
 
+###################################
+# Flask callbacks
+###################################
+
 @app.route('/')
 def entry():
     return render_template('index.html')
 
 
+###################################
+# Socker.IO callbacks
+###################################
+
 @socketio.on("close")
 def on_message(message: dict):
     position_id = message['id']
@@ -35,52 +61,35 @@ def on_message(message: dict):
 
 
 @socketio.on('connect')
-def start_bot():
-    global bot
-
-    asyncio.set_event_loop(loop)
-
-    API_KEY = os.getenv("API_KEY")
-    API_SECRET = os.getenv("API_SECRET")
-
-    if not bot:
-        bot = BfxBot(api_key=API_KEY, api_secret=API_SECRET,
-                     symbols=[Symbol.BTC], tick_duration=20)
-        strategy = TrailingStopStrategy()
-        bot.set_strategy(Symbol.BTC, strategy)
-
-        threading.Thread(target=lambda: asyncio.run(bot_loop())).start()
-        print("Bot started.")
-
+def on_connect():
     socketio.emit("first_connect",
                   {"ticks": bot.status[Symbol.BTC].all_ticks(),
                    "prices": bot.status[Symbol.BTC].all_prices()})
 
 
-async def bot_loop():
-    global bot
+###################################
+# Bot callbacks
+###################################
 
-    eh = bot.event_handler(Symbol.BTC)
-
-    @eh.on_event(EventKind.NEW_TICK)
+@btc_eh.on_event(EventKind.NEW_TICK)
 def on_new_tick(event: Event, status: SymbolStatus):
+    # TODO: finalize JSON structure
+    def pos_to_json(pw: PositionWrapper):
+        return {
+            "id": pw.position.id,
+            "symbol": pw.position.symbol,
+            "profit_loss": pw.position.profit_loss,
+            "profit_loss_percentage": pw.position.profit_loss_percentage
+        }
+
     tick = event.tick
     price = status.prices[event.tick]
-        positions: List[PositionWrapper] = status.positions[event.tick] if event.tick in status.positions else []
 
-        # wrapping into json
-        positions = list(
-            map(lambda x: {"id": x.position.id, "symbol": x.position.symbol, "profit_loss": x.position.profit_loss,
-                           "profit_loss_percentage": x.position.profit_loss_percentage}, positions))
+    positions: List[PositionWrapper] = status.positions[event.tick] if event.tick in status.positions else []
 
     socketio.emit("new_tick", {"tick": tick,
                                "price": price,
-                                   "positions": positions})
-
-    await bot.start()
-
-    while True:
-        await bot.update()
+                               "positions": list(map(pos_to_json, positions))})
 
 
 if __name__ == '__main__':