Update app.py

app.py

@@ -9,6 +9,7 @@ GROUP_ID = os.environ.get("GROUP_ID")
 LINE_CHANNEL_ACCESS_TOKEN = os.environ.get("LINE_CHANNEL_ACCESS_TOKEN")
 
 message_list = {}
+group_id = ""
 
 
 @app.route('/', methods=['GET'])
@@ -152,6 +153,9 @@ def api():
 
 def get_payload_dict(raw_payload) -> dict:
     # print(raw_payload)
+    global group_id
+    group_id = events.get("source", {}).get("groupId")
+    print(group_id)
     events = raw_payload.get("events", [{}])[0]
     return {"token": events.get("replyToken"),
             "quote_token": events.get("message", {}).get("quoteToken"),
@@ -200,7 +204,8 @@ def get_username(user_id: str):
 
 
 def get_users_number() -> int:
-    url = f"https://api.line.me/v2/bot/group/{GROUP_ID}/members/count"
+    global group_id
+    url = f"https://api.line.me/v2/bot/group/{group_id}/members/count"
     try:
         res_json = requests.get(url, headers={"Authorization": "Bearer " + LINE_CHANNEL_ACCESS_TOKEN}).json()
         return int(res_json.get("count"))