Excel2Mailer

Excel2Mailer is a Node.js application that allows you to upload an Excel file, convert its data to JSON, and send certificates to users via email.

Features

• User Management: Add users to the database with their name and email.
• Excel File Upload: Upload an Excel file containing user data, convert it to JSON, and store it in MongoDB.
• Generate Certificates: Automatically generate PDF certificates for users who have not received one and send them via email.

Prerequisites

Before running the application, make sure you have the following installed:

• Node.js
• MongoDB
• npm (Node Package Manager)

Installation

1. Clone the repository:

   git clone https://github.com/your-username/Excel2Mailer.git

2. Install dependencies:

   cd Excel2Mailer
   npm install

3. Set up a .env file in the project root with the following variables:

   MONGO_URL=your_mongo_db_url
   USER_EMAIL=your_gmail_email
   USER_PASS=your_gmail_password
   

   Note: Ensure that your Gmail account allows access to less secure apps. For production, consider using OAuth2.

Usage

1. Start the application:

   npm start

2. Open your browser and navigate to http://localhost:3000 to access the application.

3. Use the provided forms to add users, upload Excel files, and generate/send certificates.

Routes

• /: Home page with the main interface.
• /addUser: Form to add a new user.
• /upload: Endpoint to upload an Excel file.
• /getall: Retrieve all users from the database.
• /generate-certificates: Generate and send certificates to users.

Dependencies

• express
• mongoose
• dotenv
• multer
• convert-excel-to-json
• nodemailer
• puppeteer