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import validators
import random
import string
import datetime
import sqlalchemy
from sqlalchemy import exc
from db import engine
"""
Generate and return a new randomized link that is connected to the user
Links are composed of 5 uppercase ASCII characters + numbers
"""
def generate_link(request, owner):
content_type = request.headers.get('Content-Type')
if content_type == 'application/json':
try:
redirect_link = request.json['redirect_link']
except KeyError:
return 'Redirect link not provided', 400
if not validators.url(redirect_link):
return 'Redirect link is malformed. Please try again', 400
else:
return 'Content-Type not supported', 400
with engine.begin() as conn:
choices = string.ascii_uppercase + '1234567890'
while True:
try:
link = ''.join(random.choices(choices, k=5))
expire_date = (datetime.datetime.now() + datetime.timedelta(days=7)).strftime('%d/%m/%Y')
expire_date = datetime.datetime.strptime(expire_date, '%d/%m/%Y')
conn.execute(sqlalchemy.text('INSERT INTO links(owner, link, redirect_link, expire_date) VALUES (:owner, :link, :redirect_link, :expire_date)'), [{'owner': owner, 'link': link, 'redirect_link': redirect_link, 'expire_date': expire_date}])
conn.commit()
break
except exc.IntegrityError:
continue
return link, 200
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