Added the token generator

tiny0/token.py

@@ -1,8 +1,19 @@
-#from tiny0.models import URL
+from tiny0.models import URL
 from secrets import choice
 
-'''
+# The characters used to generate the token
+token_characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz_-"
 
-Generate valid token
+def gen_valid_token():
+	while True:
+		# Generate a token
+		token = "".join(choice(token_characters) for i in range(8))
+
+		# If the token does not exists in the database
+		if not URL.query.filter_by(token=token).first():
+			# Break the loop
+			break
+
+	# Return the token
+	return token
 
-'''