Refactor database connection and data initialization in app.py

Separated database connection and data initialization into distinct functions. Updated the initialization process to improve modularity and leverage Streamlit's caching mechanism for data retrieval. Removed redundant code and simplified the data loading workflow.

app.py

@@ -14,17 +14,22 @@ def init_conn():
         client = pymongo.MongoClient(uri, retryWrites=True, serverSelectionTimeoutMS=500000)
         db = client["League_of_Legends_Database"]
 
-        current_date = datetime.now()
+        return db
 
-        collection = db["gamelogs"] 
-        max_date = current_date - timedelta(days=1)
-        min_date = current_date - timedelta(days=365)
-        team_names = collection.distinct("teamname")
-        player_names = collection.distinct("playername")
+@st.cache_resource(ttl = 300)
+def init_data():
+    current_date = datetime.now()
+
+    collection = db["gamelogs"] 
+    max_date = current_date - timedelta(days=1)
+    min_date = current_date - timedelta(days=365)
+    team_names = collection.distinct("teamname")
+    player_names = collection.distinct("playername")
 
-        return db, team_names, player_names, min_date, max_date
+    return team_names, player_names, min_date, max_date
     
-db, team_names, player_names, min_date, max_date = init_conn()
+db = init_conn()
+team_names, player_names, min_date, max_date = init_data()
 
 display_formats = {'wKill%': '{:.2%}', 'wDeath%': '{:.2%}', 'wAssist%': '{:.2%}', 'lKill%': '{:.2%}', 'lDeath%': '{:.2%}', 'lAssist%': '{:.2%}', 'Over %': '{:.2%}', 'Under %': '{:.2%}'}
 leagues = ['AL', 'CBLOL', 'GLL', 'HM', 'LCK', 'LCS', 'LEC', 'LFL', 'LLA', 'LPL', 'LPLOL', 'LVP SL', 'MSI', 'PCS', 'PGN', 'PRM', 'TCL', 'VCS', 'LTAN', 'LTAS',