CSV Email Sender API

This project allows admins to add users to a list via CSV upload, efficiently handling 10,000+ records, and send email notifications to them using the provided CSV file.

API Endpoints

1. Create a List

• URL: http://localhost:3000/post

• Method: POST

• Description: Creates a new list with a title and custom properties.

• Request Body:

  {
    "title": "My List",
    "customProperties": [
      { "title": "city", "fallbackValue": "Unknown" }
    ]
  }

• Response:

  • 201 Created: List created successfully.
  • 400 Bad Request: Missing or invalid parameters.
  • 409 Conflict: List with the same title already exists.

• Example:

  curl -X POST http://localhost:3000/post -H "Content-Type: application/json" -d '{
    "title": "My List",
    "customProperties": [
      { "title": "city", "fallbackValue": "Unknown" }
    ]
  }'

  ✅ List creation with title and custom properties

2. Upload Users via CSV

• URL: http://localhost:3000/:listTitle/users

• Method: POST

• Description: Adds users to the specified list via CSV upload. The CSV must have a header row with 'name' and 'email' as required fields. Custom properties should match the headers.

• URL Parameters:

  • listTitle (string) - The title of the list to add users to.

• Request Body: Multipart/form-data

  • file: CSV file containing users to be added.

• Sample CSV Format:

  name	email	city
  John Doe	john.doe@example.com	Bengaluru
  Jane Doe	jane.doe@example.com

  • Note: The second record doesn't have the city value defined, so the fallback value present in the list should be used.

• Response:

  • 200 OK: Users added successfully with details.
  • 400 Bad Request: Missing or invalid parameters.
  • 404 Not Found: List not found.
  • 409 Conflict: Duplicate emails found.
  • Partial Success: Users added with some errors. The response will include details about the errors and successful additions.

• Example:

  curl -X POST http://localhost:3000/My%20List/users -H "Content-Type: multipart/form-data" -F "file=@/path/to/your/file.csv"

  ✅ Upload CSV file to add users to the list

Error Handling

• Invalid Parameters: Ensure all required parameters are included in the request body or URL.
• Unique Emails: Ensure no duplicate emails are present in the CSV file.
• List Not Found: Ensure the list title specified in the URL exists.

Example Usage

Create a New List

curl -X POST http://localhost:3000/post -H "Content-Type: application/json" -d '{
  "title": "Friends List",
  "customProperties": [
    { "title": "hobby", "fallbackValue": "Unknown" }
  ]
}'

Add Users to a List via CSV Upload

curl -X POST http://localhost:3000/Friends%20List/users -H "Content-Type: multipart/form-data" -F "file=@/path/to/your/file.csv"

Environment Variables

Ensure to set up the following environment variables:

• AUTH_EMAIL - The email address used for sending emails.
• AUTH_EMAIL_PASS - The password or app-specific password for the email account.
• MONGODB_URI - The url for mongodb.

AUTH_EMAIL=your-email@gmail.com
AUTH_EMAIL_PASS=your-email-password
MONGODB_URI= mongoDB-url