/django-eSamudaay

Primary LanguagePythonMIT LicenseMIT

django-eSamudaay-app

Technology/Frameworks used

  • Python, Django, Django REST

Important Technical Decisions

Solution for delivery_cost slab

  • Was looking for optimal way to define delivery_cost slab so that it can be configured easily and new slab can be updated easily
  • Used hash table to store slabs as configuration in settings.py
DELIVERY_FEE_CONFIG = {
    #upto_distance(mt) : Rs(paisa)
    10000: 5000,
    20000: 10000,
    50000: 50000,
    500000: 100000
}

Keeping main logic minimal and organised as possible

  • Moved important logic like calculating discount, delivery_cost, total cost for all item in other file called utils.py, to keep main code block in views.py clean and small as possible

Proper validations for input request data

  • Handled and validated all cases for i/p API request
  • E.g required and non-required fields, offer_type can be FLAT or DELIVERY, offer_val can not be null for FLAT offer

Setup

Clone this repository by

  • git clone https://github.com/yashpatel7025/django-eSamudaay.git

  • Go to the project directory

    cd django-eSamudaay

Install dependencies

  • pip3 install -r requirements.txt

Migrate in-built models into your database schema (Optional)

  • python3 manage.py migrate

To run the server

  • python3 manage.py runserver

At this point, Django app should be running locally at port 8000 port, app can be access from http://127.0.0.1:8000/

Deployed on Microsoft Azure

Endpoint

  • POST http://52.172.236.204:8080/order/

API Contract

curl --location --request POST 'http://52.172.236.204:8080/order/' \
--header 'Content-Type: application/json' \
--header 'Cookie: messages=.eJyLjlaKj88qzs-Lz00tLk5MT1XSMdAxMtVRcs1NzMxRKE7NK1EoLk1OBkqmlebkVCrF6gwTHbEApChW_w:1lvLtB:qtNlgoJpWMOaGhHwdGWN7U9nZ0lJ7EVXpa-_F5NoBgs' \
--data-raw '
{
  "order_items": [
    {
      "name": "bread",
      "quantity": 2,
      "price": 2200
    },
    {
      "name": "butter",
      "quantity": 1,
      "price": 5900
    }
  ],
  "distance": 1200,
  "offer": {
    "offer_type": "FLAT",
    "offer_val": 1000
  }
}

'

Screenshots of API Responses from Postman

  • valid API Request(given as example)

  • order_total = sum [ price(i) * quantity(i) ] + delivery_fee - discount = ( 235 * 2 ) + ( 1 * 52 ) + 1000 - 500 = 1022Rs

  • order_total = sum[ price(i) * quantity(i) ] + delivery_fee - discount(discount is equal to deliver_fee) = (2352)+(152) + 1000 - 1000 = 522Rs

  • order_total = sum[ price(i) * quantity(i) ] + delivery_fee - discount(discount is deliver_fee) = (222)+(159) + 50 - 200 = -47 -> 0 Rs

Contact for if need any help