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Bulk Voter Import Feature - Implementation Checklist

Completed Tasks

1. Dependencies Added (pom.xml)

Apache POI 5.2.5 for Excel file processing
OpenCSV 5.9 for CSV file processing

2. DTO Classes Created

VoterImportResult.java - Tracks import results with success/failure counts
VoterImportData.java - Represents individual voter data during import

3. Service Layer Created

BulkImportService.java - Handles Excel/CSV parsing, validation, and password generation
Auto-generates passwords as: firstName + "123"
Encrypts passwords with BCrypt before saving

4. Controller Endpoints Added (AdminController.java)

GET /admin/voters/import - Shows import page
POST /admin/voters/import - Handles file upload and processing
GET /admin/voters/download-template - Downloads Excel template

5. Templates Created/Updated

voter-import.html - New import page with drag-drop upload, template download, and results display
voter-management.html - Added link to Bulk Import page

6. Validation Features

Username: required, unique (checks database and within file)
Full Name: required
Email: optional, unique if provided

7. Features Implemented

Accepts Excel (.xlsx, .xls) and CSV files
Standardized template with columns: Username, Full Name, Email
Auto-generates default password (firstName + "123")
Passwords encrypted with BCrypt
Detailed feedback showing success/failure counts
Failed records shown with error reasons
Template download with example data
Drag-and-drop file upload UI

Testing Instructions

Start the application: ./mvnw spring-boot:run
Navigate to http://localhost:8080
Login as admin
Go to Voter Management page
Click "Bulk Import Voters" button
Download the template and prepare your voter data
Upload the file and verify import results

Expected Behavior

Successfully imported voters will have encrypted passwords in the format: john123 (for "John Doe")
Failed records will be listed with specific error reasons
Total processed, successful, and failed counts will be displayed