Update app.py

app.py

@@ -57,17 +57,14 @@ import sqlite3
 from datetime import datetime
 
 def init_db():
-    print("Initializing database...")
-    conn = None
     try:
         conn = sqlite3.connect('chat_history.db')
         c = conn.cursor()
         
-        # 테이블 생성
+        # 테이블이 없을 때만 생성
         c.execute('''CREATE TABLE IF NOT EXISTS sessions
                      (session_id TEXT PRIMARY KEY, 
                       created_at TIMESTAMP)''')
-                      
         c.execute('''CREATE TABLE IF NOT EXISTS chat_history
                      (id INTEGER PRIMARY KEY AUTOINCREMENT,
                       session_id TEXT,
@@ -75,12 +72,11 @@ def init_db():
                       response TEXT,
                       timestamp TIMESTAMP,
                       FOREIGN KEY (session_id) REFERENCES sessions(session_id))''')
-                      
         conn.commit()
         print("Database initialized successfully")
         
     except sqlite3.Error as e:
-        print(f"Database initialization error: {e}")
+        print(f"Database error: {e}")
         raise
     finally:
         if conn: