Billing-Counter Backend

Backend system for Billing Counter built on DRF

• local: http://localhost:/
• production: http://54.198.181.201/

Requirements

For running the script

• Python
• PostgreSQL
• Libraries mentioned below

Cloning

• Create a virtual environment

python -m venv ./venv
source ./venv/bin/activate

• Use git clone to clone the repo

git clone git@github.com:FumaxIN/Billing-Counter.git

Running

• Install the requirements

  pip install -r requirements.txt

• Create a databse 'billing' on psql createdb psql and make migrations

python manage.py migrate

• Run server

python manage.py runserver

Swagger-Doc

Note: In each post request, url and external_id field are auto generated for navigation.

Auth Endpoints:

• Login for existing employee

  POST: /v1/auth/login
  

  Request body:

  {
      "email": "user@example.com",
      "password": "string"
  }
  

  An access token will be returned. Click the Authorize button at the top-right section of the swagger page and paste the token to login

• Registration for a new employee

  POST: /v1/auth/register
  

  Request body:

  {
      "email": "user@example.com",
      "name": "Jane Smith",
      "password": "string",
      "password2": "string"
  }
  

  An access token will be returned. Click the Authorize button at the top-right section of the swagger page and paste the token to login

Product endpoints

• Add a product

  POST: /v1/products
  

  Request body:

  {
      "name": "LeeCooper Jeans",
      "description": "Lee Cooper Skinny jeans unisex",
      "price": "2499.00"
  }
  

• Get products

  GET: /v1/products
  

• Fetch a product /v1/products/{url}

  GET: /v1/products/AbdFE3e6
  

• Update a product /v1/products/{url}

  PATCH: /v1/products/AbdFE3e6
  

  Request body:

  {
      "price": "1399.00"
  }
  

• Delete a product

  DELETE: /v1/products/{url}
  

Customer endpoints

• Add a customer

  POST: /v1/customers
  

  Request body:

  {
    "name": "John Doe",
    "email": "johndoe@example.com",
    "phone": "9421459476",
    "address": "string"
  }
  

• Get customers

  GET: /v1/customers
  

• Fetch a customer /v1/customers/{external_id}

  GET: /v1/customers/04171903-6d50-43d2-a079-8c21d93bbfc3
  

• Update customer details /v1/customers/{external_id}

  PATCH: /v1/customers/04171903-6d50-43d2-a079-8c21d93bbfc3
  

  Request body:

  {
      "phone": "9342781065",
      "address": "New address"
  }
  

• Delete a customer

  DELETE: /v1/customers/{external_id}
  

Billing endpoints

• Generate a new bill

  POST: /v1/bills
  

  Request body:

  {
    "customer_id": "04171903-6d50-43d2-a079-8c21d93bbfc3",
    "products_id":  [ 
          { 
              "a05f4c35-323e-4439-b76b-93e34ad7c9dd": 2
          },
          { 
              "690775a6-96c2-4cc9-93d6-878c322cac6d": 1
          }
      ]
  }
  

  In the backend, each product will be fetched, price to be multiplied with quantity to ge the final amount.

  Response:

  {
    "external_id": "4c9d1de8-a9a7-4af8-a011-7a08292f5d4c",
    "url": "Cff03bf9",
    "amount": "13497.00",
    "orders": [
      {
        "product": {
          "external_id": "a05f4c35-323e-4439-b76b-93e34ad7c9dd",
          "url": "AbdFE3e6",
          "name": "Lee Cooper Jeans",
          "description": "unisex skinny jeans",
          "price": "2499.00",
          "created_at": "2024-04-06T17:28:56.921158Z",
          "updated_at": "2024-04-06T17:37:58.986056Z"
        },
        "quantity": 2,
        "total": "4998.00"
      },
      {
        "product": {
          "external_id": "690775a6-96c2-4cc9-93d6-878c322cac6d",
          "url": "200478ff",
          "name": "Casio Watch",
          "description": "Unisex Chronograph Watch by Casio",
          "price": "8499.00",
          "created_at": "2024-04-05T16:27:26.307872Z",
          "updated_at": "2024-04-05T16:27:26.307892Z"
        },
        "quantity": 1,
        "total": "8499.00"
      }
    ],
    "customer": {
      "external_id": "04171903-6d50-43d2-a079-8c21d93bbfc3",
      "url": "F3EE7a75",
      "name": "John Doe",
      "email": "johndoe@example.com",
      "phone": "9780119670",
      "address": "South Ex, New Delhi",
      "created_at": "2024-04-06T17:15:16.415319Z",
      "updated_at": "2024-04-06T17:15:16.415337Z"
    },
    "employee": {
      "external_id": "87526cf6-2cd5-4ef1-bd36-0bf7461e91db",
      "email": "harshit@gmail.com",
      "name": "Harshit",
      "meta": {
        "is_admin": false,
        "is_staff": false,
        "is_superuser": false
      },
      "created_at": "2024-04-06T16:15:36.659393Z",
      "updated_at": "2024-04-06T16:15:36.659422Z"
    },
    "created_at": "2024-04-06T17:39:47.179698Z",
    "modified_at": "2024-04-06T17:39:47.179716Z",
    "deleted": false
  }
  

• Get bills

  GET: /v1/bills
  

• Fetch a bill /v1/bills/{url}

  GET: /v1/bills/Cff03bf9
  

Analytics Endpoint

• Get analytics

  GET: /v1/analytics
  

  Fetches top employee wrt revenue and top selling product along with the details

  Response:

  {
    "top_employee": {
      "user": {
        "external_id": "87526cf6-2cd5-4ef1-bd36-0bf7461e91db",
        "email": "harshit@gmail.com",
        "name": "Harshit",
        "meta": {
          "is_admin": false,
          "is_staff": false,
          "is_superuser": false
        },
        "created_at": "2024-04-06T16:15:36.659393Z",
        "updated_at": "2024-04-06T16:15:36.659422Z"
      },
      "total_revenue": 18495
    },
    "top_product": {
      "name": {
        "external_id": "a05f4c35-323e-4439-b76b-93e34ad7c9dd",
        "url": "AbdFE3e6",
        "name": "Lee Cooper Jeans",
        "description": "unisex skinny jeans",
        "price": "2499.00",
        "created_at": "2024-04-06T17:28:56.921158Z",
        "updated_at": "2024-04-06T17:39:47.183438Z"
      },
      "total_units_sold": 4
    }
  }