rizperdana/flask-mail-scheduler

Flask Mail Scheduler

This repository is example of email scheduler using Flask as API and routing management and Redis Queue as scheduler

Important

The timestamp saved is assumed as UTC+8 (Asia / Singapore).

Requirements

1. Python preferably 3.9
2. Pipenv to manage environment
3. PostgreSQL
4. redis-server

Setup

1. Install environment pipenv install.
2. Create .env & .env.test file as in .env.example.
3. pipenv shell.
4. Initialize alembic and migrate database.

FLASK_APP=run.py flask db init
FLASK_APP=run.py flask db migrate
FLASK_APP=run.py flask db upgrade

5. Run python run.py
6. Open new terminal and get to the project root directory. Then run rq worker. Example: rq worker --url redis://127.0.0.1:6379/0 --with-scheduler

Setup Test

1. Create a copy of the original database.
2. Create .env.test as in .env.test.example.
3. Run python -m unittest discover -v -s app/tests/ -p "test_*.py"

API Docs

• /save_emails

  Used to save email content. URL: /save_emails Method: POST Data Requirements

  {
      "event_id": [number, required],
      "email_subject": [string, required],
      "email_content": [string, required],
      "timestamp": [string, required]
  }
  

  Data Example

  {
      "event_id": 3,
      "email_subject": "Subject",
      "email_content": "Content",
      "timestamp": "13 Mar 2020 20:30"
  }
  

  Success Response

  Status Code: 200 Example:

  {
      "data": {
          "email_content": "Lorem ipsuom dolor sit amet",
          "email_subject": "😋 Lorem",
          "event_id": 3,
          "timestamp": "13 Mar 2022 20:30"
      },
      "message": "success",
      "status": "success",
      "status_code": 200
  }
  

  Error Response

  Status Code: 422 Example:

  {
      "data": {
          "email_content": [
              "The email content field is required.",
              "The email content must be a string."
          ],
          "email_subject": [
              "The email subject field is required.",
              "The email subject must be a string."
          ],
          "event_id": [
              "The event id field is required.",
              "The event id must be an integer."
          ],
          "timestamp": [
              "The timestamp field is required.",
              "The timestamp is not a valid date."
          ]
      },
      "message": "validation_form_error",
      "status": "error",
      "status_code": 422
  }
  

  Status Code: 500 Example:

  {
      "data": {},
      "message": "Internal Error",
      "status": "error",
      "status_code": 500
  }
  

• /save_recipient

  Used to email and event id of recipient. URL: /save_recipient Method: POST Data Requirements

  {
      "event_id": [number, required],
      "email_recipient": [string, required]
  }
  

  Data Example

  {
      "event_id": 3,
      "email_recipient": "recipient@email.com"
  }
  

  Success Response

  Status Code: 200 Example:

  {
      "data": {
          "event_id": 3,
          "email_recipient": "recipient@email.com"
      },
      "message": "success",
      "status": "success",
      "status_code": 200
  }
  

  Error Response

  Status Code: 422 Example:

  {
      "data": {
          "email_recipient": [
              "The email recipient field is required.",
              "The email recipient must be a string."
          ],
          "event_id": [
              "The event id field is required.",
              "The event id must be an integer."
          ]
      },
      "message": "validation_form_error",
      "status": "error",
      "status_code": 422
  }
  

  Status Code: 500 Example:

  {
      "data": {},
      "message": "Internal Error",
      "status": "error",
      "status_code": 500
  }
  

• /manage_email

  Used to get list of email contents and delete email content to cancel sending email. URL: /manage_email Method: GET

  Success Response

  Status Code: 200 Example:

  {
      "data": [
          {
              "email_content": "Content",
              "email_subject": "Subject",
              "event_id": 2,
              "id": 99,
              "timestamp": "2022-03-13T20:10:00"
          },
          {
              "email_content": "Content",
              "email_subject": "Subject",
              "event_id": 1,
              "id": 101,
              "timestamp": "2022-03-13T17:00:00"
          }
      ],
      "message": "success",
      "status": "success",
      "status_code": 200
  }
  

  Error Response

  Status Code: 500 Example:

  {
      "data": {},
      "message": "Internal Error",
      "status": "error",
      "status_code": 500
  }
  

  URL: /manage_email?email_content_id=1 Query String: email_content_id where email_content_id is id of email content in database. Method: DELETE

  Success Response

  Status Code: 200 Example:

  {
      "data": {},
      "message": "success",
      "status": "success",
      "status_code": 200
  }
  

  Error Response

  Status Code: 500 Example:

  {
      "data": {},
      "message": "Internal Error",
      "status": "error",
      "status_code": 500
  }