(feat): Fixed database URL, added remove_email function

database.py

@@ -4,7 +4,7 @@ from dotenv import load_dotenv
 
 load_dotenv()
 
-DATABASE_URL = os.getenv("DATABASE_URL")
+DATABASE_URL = os.getenv("DATABASE_FILE")
 
 def init_db():
     conn = sqlite3.connect(DATABASE_URL)
@@ -20,11 +20,26 @@ def init_db():
 
 def add_email(email):
     try:
-        conn = sqlite3.connect(DATABASE_URL)
+        with sqlite3.connect(DATABASE_URL, timeout=10) as conn:
             cursor = conn.cursor()
             cursor.execute("INSERT INTO subscribers (email) VALUES (?)", (email,))
             conn.commit()
-        conn.close()
         return True
     except sqlite3.IntegrityError:
         return False
+    except sqlite3.OperationalError as e:
+        print(f"Operational Error: {e}")
+        return False
+
+def remove_email(email):
+    try:
+        with sqlite3.connect(DATABASE_URL, timeout=10) as conn:
+            cursor = conn.cursor()
+            cursor.execute("DELETE FROM subscribers WHERE email = ?", (email,))
+            conn.commit()
+            if cursor.rowcount > 0:
+                return True
+            return False
+    except Exception as e:
+        print(f"Error removing email: {e}")
+        return False