feat: otp table

utils/constants.py

@@ -1,5 +1,6 @@
 import dotenv
 import os
+import random
 dotenv.load_dotenv()
 
 DEFAULT_SKIP = 0
@@ -11,4 +12,23 @@ DEFAULT_ORDER = "desc"
 # jwt
 JWT_ALGORITHM = os.getenv("JWT_ALGORITHM")
 JWT_SECRET = os.getenv("JWT_SECRET")
-JWT_EXPIRE_MINUTES = os.getenv("JWT_EXPIRE_MINUTES")
+JWT_EXPIRE_MINUTES = os.getenv("JWT_EXPIRE_MINUTES")
+
+def generateOTP(length: int = 6) -> str:
+    """
+    Generate a secure numeric OTP (One-Time Password) of specified length.
+    
+    Args:
+        length: Length of the OTP to generate (default: 6)
+    
+    Returns:
+        A string containing the generated numeric OTP
+    """
+    if length < 4:
+        # Ensure minimum security with at least 4 characters
+        length = 4
+        
+    # Generate a numeric OTP with exactly 'length' digits
+    # This ensures we get a number with the correct number of digits
+    # For example, length=6 gives a number between 100000-999999
+    return str(random.randint(10**(length-1), 10**length - 1))