toolz.py

import random 
import re
import os
import string
from flask_mail import Message
from app import mail
from config import Config
import smtplib
def validate_email(email):
    if email is None:
        return False

    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$'
    if re.match(pattern, email):
        return True
    else:
        return False

  # generate a random number for the token
def random_generator(size=6, chars=string.ascii_uppercase + string.digits):
    return ''.join(random.choice(chars) for _ in range(size))
    

# validate_phone
def validate_phone_update(existing_phone, new_phone):
    if new_phone == "":
        new_phone = phone

    # new phone is not provided
    if new_phone is None:
        return True

    # must add new phone number
    if new_phone is not None and existing_phone is not None:
        print("ERROR : Cannot input a new phone number because one already exists")
        return False

    return False


# Email Sender function
def send_email(subject, receiver, text_body, html_body):
    msg = Message(subject=subject, sender=('FinTech', Config.MAIL_USERNAME), recipients=[receiver])
    msg.body = text_body
    msg.html = html_body
    mail.send(msg)