Price-drop-alert

This is a simple price drop alert system made with Django.

Working

• User needs to register first, with an email id of their choice .
• Then login with the registered credentials.
• User may enter a product URL copied from flipkart ,then check the response and add it to the watchlist.
• All URLs in the watchlist are scraped every time the scheduler runs.
• Changes to the price or availability of the product is then saved to the database.
• User will get an email when the product experiences a price drop or whenever the product is back in stock.

Dependencies

Install dependencies beforehand.

pip install -r requirements.txt

Quick setup before running

1) Add a .env file in 'pricedrop' folder with following contents

EMAIL_HOST_USER = "replace this with the email-id( Gmail id ) you are going to use."
EMAIL_HOST_PASSWORD = "the google account password"

Note: This Email-id and password(must be a Gmail one) is for the system to mail the alerts to the users. The registering users must enter their email-id on the sign-up page.

Also enable less secure app access in google account

2) Create a MySQL data base named 'django_pricedrop_db'

The database used is MySQL due to limitations in SQLite.

3) Comment the ready() method in 'linkadd/apps.py'

This is to prevent "Table 'django_pricedrop_db.django_apscheduler_djangojob' doesn't exist" error when migrating the database.

    # def ready(self):
    #         from .scheduler import scheduler
    #         scheduler.start()

4) Migrate the database

python manage.py makemigrations

then

python manage.py migrate

5) Final step , Uncomment the ready() method in 'linkadd/apps.py'

as below This is to start the periodic scheduler

    def ready(self):
            from .scheduler import scheduler
            scheduler.start()

Running

For running use

python manage.py runserver --noreload

use --noreload otherwise scheduler will run twice

Disclaimer

Web scraping and crawling aren't illegal, but scraping a website without the owners permission is not legal.

Use it only for educational purpose and don't overwhelm the servers by sending mass requests.