EmailTemplateEngine.java
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package com.ecommerce.notification.template;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import java.util.Map;
@Component
public class EmailTemplateEngine {
public String processTemplate(String template, Map<String, Object> variables) {
if (!StringUtils.hasText(template) || variables == null) {
return template;
}
String processed = template;
for (Map.Entry<String, Object> entry : variables.entrySet()) {
String placeholder = "{{" + entry.getKey() + "}}";
String value = entry.getValue() != null ? entry.getValue().toString() : "";
processed = processed.replace(placeholder, value);
}
return processed;
}
public String generateOrderConfirmationEmail(Map<String, Object> variables) {
StringBuilder template = new StringBuilder();
template.append("<!DOCTYPE html>")
.append("<html>")
.append("<head>")
.append(" <meta charset=\"UTF-8\">")
.append(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")
.append(" <title>Order Confirmation</title>")
.append(" <style>")
.append(" body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; }")
.append(" .container { max-width: 600px; margin: 0 auto; background: #ffffff; padding: 0; }")
.append(" .header { background: #4CAF50; color: white; padding: 20px; text-align: center; }")
.append(" .content { padding: 30px; background: white; }")
.append(" .footer { text-align: center; padding: 20px; color: #666; font-size: 12px; background: #f9f9f9; }")
.append(" .order-details { background: #f9f9f9; padding: 15px; border-radius: 5px; margin: 20px 0; }")
.append(" .button { display: inline-block; padding: 12px 24px; background: #4CAF50; color: white; text-decoration: none; border-radius: 4px; margin: 10px 0; }")
.append(" </style>")
.append("</head>")
.append("<body>")
.append(" <div class=\"container\">")
.append(" <div class=\"header\">")
.append(" <h1>Order Confirmation</h1>")
.append(" </div>")
.append(" <div class=\"content\">")
.append(" <h2>Thank you for your order!</h2>")
.append(" <p>Dear {{customerName}},</p>")
.append(" <p>Your order <strong>{{orderNumber}}</strong> has been received and is being processed.</p>")
.append(" <div class=\"order-details\">")
.append(" <h3>Order Summary</h3>")
.append(" <p><strong>Order Number:</strong> {{orderNumber}}</p>")
.append(" <p><strong>Order Date:</strong> {{orderDate}}</p>")
.append(" <p><strong>Total Amount:</strong> ${{totalAmount}}</p>")
.append(" <p><strong>Shipping Address:</strong><br>{{shippingAddress}}</p>")
.append(" </div>")
.append(" <p>We'll send you another email when your order ships. You can track your order status anytime by clicking the button below:</p>")
.append(" <a href=\"{{trackingUrl}}\" class=\"button\">Track Your Order</a>")
.append(" <p>If you have any questions about your order, please contact our customer service team.</p>")
.append(" <p>Thank you for shopping with us!</p>")
.append(" <p><strong>The E-Commerce Team</strong></p>")
.append(" </div>")
.append(" <div class=\"footer\">")
.append(" <p>© 2024 E-Commerce Store. All rights reserved.</p>")
.append(" <p>1234 Commerce Street, Business City, BC 12345</p>")
.append(" </div>")
.append(" </div>")
.append("</body>")
.append("</html>");
return processTemplate(template.toString(), variables);
}
public String generatePaymentSuccessEmail(Map<String, Object> variables) {
StringBuilder template = new StringBuilder();
template.append("<!DOCTYPE html>")
.append("<html>")
.append("<head>")
.append(" <meta charset=\"UTF-8\">")
.append(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")
.append(" <title>Payment Successful</title>")
.append(" <style>")
.append(" body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; }")
.append(" .container { max-width: 600px; margin: 0 auto; background: #ffffff; padding: 0; }")
.append(" .header { background: #2196F3; color: white; padding: 20px; text-align: center; }")
.append(" .content { padding: 30px; background: white; }")
.append(" .footer { text-align: center; padding: 20px; color: #666; font-size: 12px; background: #f9f9f9; }")
.append(" .payment-details { background: #f9f9f9; padding: 15px; border-radius: 5px; margin: 20px 0; }")
.append(" </style>")
.append("</head>")
.append("<body>")
.append(" <div class=\"container\">")
.append(" <div class=\"header\">")
.append(" <h1>Payment Successful</h1>")
.append(" </div>")
.append(" <div class=\"content\">")
.append(" <h2>Thank you for your payment!</h2>")
.append(" <p>Dear {{customerName}},</p>")
.append(" <p>Your payment for order <strong>{{orderNumber}}</strong> has been processed successfully.</p>")
.append(" <div class=\"payment-details\">")
.append(" <h3>Payment Details</h3>")
.append(" <p><strong>Payment ID:</strong> {{paymentId}}</p>")
.append(" <p><strong>Amount:</strong> ${{amount}}</p>")
.append(" <p><strong>Date:</strong> {{paymentDate}}</p>")
.append(" <p><strong>Payment Method:</strong> {{paymentMethod}}</p>")
.append(" </div>")
.append(" <p>Your order is now being prepared for shipment. We'll notify you when it ships.</p>")
.append(" <p>Thank you for your business!</p>")
.append(" <p><strong>The E-Commerce Team</strong></p>")
.append(" </div>")
.append(" <div class=\"footer\">")
.append(" <p>© 2024 E-Commerce Store. All rights reserved.</p>")
.append(" <p>1234 Commerce Street, Business City, BC 12345</p>")
.append(" </div>")
.append(" </div>")
.append("</body>")
.append("</html>");
return processTemplate(template.toString(), variables);
}
public String generateShippingUpdateEmail(Map<String, Object> variables) {
StringBuilder template = new StringBuilder();
template.append("<!DOCTYPE html>")
.append("<html>")
.append("<head>")
.append(" <meta charset=\"UTF-8\">")
.append(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")
.append(" <title>Shipping Update</title>")
.append(" <style>")
.append(" body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; }")
.append(" .container { max-width: 600px; margin: 0 auto; background: #ffffff; padding: 0; }")
.append(" .header { background: #FF9800; color: white; padding: 20px; text-align: center; }")
.append(" .content { padding: 30px; background: white; }")
.append(" .footer { text-align: center; padding: 20px; color: #666; font-size: 12px; background: #f9f9f9; }")
.append(" .shipping-info { background: #f9f9f9; padding: 15px; border-radius: 5px; margin: 20px 0; }")
.append(" .button { display: inline-block; padding: 12px 24px; background: #FF9800; color: white; text-decoration: none; border-radius: 4px; margin: 10px 0; }")
.append(" </style>")
.append("</head>")
.append("<body>")
.append(" <div class=\"container\">")
.append(" <div class=\"header\">")
.append(" <h1>Shipping Update</h1>")
.append(" </div>")
.append(" <div class=\"content\">")
.append(" <h2>Your order is on the way!</h2>")
.append(" <p>Dear {{customerName}},</p>")
.append(" <p>Great news! Your order <strong>{{orderNumber}}</strong> has been shipped.</p>")
.append(" <div class=\"shipping-info\">")
.append(" <h3>Shipping Information</h3>")
.append(" <p><strong>Tracking Number:</strong> {{trackingNumber}}</p>")
.append(" <p><strong>Carrier:</strong> {{carrier}}</p>")
.append(" <p><strong>Estimated Delivery:</strong> {{estimatedDelivery}}</p>")
.append(" <p><strong>Shipping Address:</strong><br>{{shippingAddress}}</p>")
.append(" </div>")
.append(" <p>You can track your package using the button below:</p>")
.append(" <a href=\"{{trackingUrl}}\" class=\"button\">Track Package</a>")
.append(" <p>If you have any questions about your shipment, please contact our customer service team.</p>")
.append(" <p>Thank you for shopping with us!</p>")
.append(" <p><strong>The E-Commerce Team</strong></p>")
.append(" </div>")
.append(" <div class=\"footer\">")
.append(" <p>© 2024 E-Commerce Store. All rights reserved.</p>")
.append(" <p>1234 Commerce Street, Business City, BC 12345</p>")
.append(" </div>")
.append(" </div>")
.append("</body>")
.append("</html>");
return processTemplate(template.toString(), variables);
}
public String generatePasswordResetEmail(Map<String, Object> variables) {
StringBuilder template = new StringBuilder();
template.append("<!DOCTYPE html>")
.append("<html>")
.append("<head>")
.append(" <meta charset=\"UTF-8\">")
.append(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")
.append(" <title>Password Reset</title>")
.append(" <style>")
.append(" body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; }")
.append(" .container { max-width: 600px; margin: 0 auto; background: #ffffff; padding: 0; }")
.append(" .header { background: #F44336; color: white; padding: 20px; text-align: center; }")
.append(" .content { padding: 30px; background: white; }")
.append(" .footer { text-align: center; padding: 20px; color: #666; font-size: 12px; background: #f9f9f9; }")
.append(" .reset-button { display: inline-block; padding: 12px 24px; background: #F44336; color: white; text-decoration: none; border-radius: 4px; margin: 10px 0; }")
.append(" .note { background: #fff3cd; padding: 10px; border-radius: 4px; border-left: 4px solid #ffc107; margin: 15px 0; }")
.append(" </style>")
.append("</head>")
.append("<body>")
.append(" <div class=\"container\">")
.append(" <div class=\"header\">")
.append(" <h1>Password Reset Request</h1>")
.append(" </div>")
.append(" <div class=\"content\">")
.append(" <h2>Reset Your Password</h2>")
.append(" <p>Dear {{customerName}},</p>")
.append(" <p>We received a request to reset your password for your E-Commerce account.</p>")
.append(" <p>Click the button below to reset your password:</p>")
.append(" <a href=\"{{resetUrl}}\" class=\"reset-button\">Reset Password</a>")
.append(" <div class=\"note\">")
.append(" <p><strong>Note:</strong> This password reset link will expire in {{expiryTime}}.</p>")
.append(" <p>If you didn't request a password reset, please ignore this email.</p>")
.append(" </div>")
.append(" <p>For security reasons, do not share this link with anyone.</p>")
.append(" <p>If you have any questions, please contact our support team.</p>")
.append(" <p><strong>The E-Commerce Team</strong></p>")
.append(" </div>")
.append(" <div class=\"footer\">")
.append(" <p>© 2024 E-Commerce Store. All rights reserved.</p>")
.append(" <p>1234 Commerce Street, Business City, BC 12345</p>")
.append(" </div>")
.append(" </div>")
.append("</body>")
.append("</html>");
return processTemplate(template.toString(), variables);
}
public String generateWelcomeEmail(Map<String, Object> variables) {
StringBuilder template = new StringBuilder();
template.append("<!DOCTYPE html>")
.append("<html>")
.append("<head>")
.append(" <meta charset=\"UTF-8\">")
.append(" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">")
.append(" <title>Welcome to E-Commerce</title>")
.append(" <style>")
.append(" body { font-family: Arial, sans-serif; margin: 0; padding: 20px; background-color: #f4f4f4; }")
.append(" .container { max-width: 600px; margin: 0 auto; background: #ffffff; padding: 0; }")
.append(" .header { background: #9C27B0; color: white; padding: 20px; text-align: center; }")
.append(" .content { padding: 30px; background: white; }")
.append(" .footer { text-align: center; padding: 20px; color: #666; font-size: 12px; background: #f9f9f9; }")
.append(" .welcome-bonus { background: #e8f5e8; padding: 15px; border-radius: 5px; margin: 20px 0; border-left: 4px solid #4CAF50; }")
.append(" .button { display: inline-block; padding: 12px 24px; background: #9C27B0; color: white; text-decoration: none; border-radius: 4px; margin: 10px 0; }")
.append(" </style>")
.append("</head>")
.append("<body>")
.append(" <div class=\"container\">")
.append(" <div class=\"header\">")
.append(" <h1>Welcome to E-Commerce!</h1>")
.append(" </div>")
.append(" <div class=\"content\">")
.append(" <h2>Hello {{customerName}},</h2>")
.append(" <p>Welcome to our E-Commerce family! We're thrilled to have you on board.</p>")
.append(" <div class=\"welcome-bonus\">")
.append(" <h3>🎉 Special Welcome Offer!</h3>")
.append(" <p>As a new member, enjoy <strong>{{discountPercentage}}% OFF</strong> your first order.</p>")
.append(" <p><strong>Use code: {{promoCode}}</strong></p>")
.append(" <p>Offer valid until {{offerExpiry}}</p>")
.append(" </div>")
.append(" <p>Start shopping now and discover our amazing products:</p>")
.append(" <a href=\"{{shopUrl}}\" class=\"button\">Start Shopping</a>")
.append(" <p>With your account, you can:</p>")
.append(" <ul>")
.append(" <li>Track your orders</li>")
.append(" <li>Save your favorite items</li>")
.append(" <li>Get exclusive member discounts</li>")
.append(" <li>Receive early access to sales</li>")
.append(" </ul>")
.append(" <p>If you have any questions, our customer service team is here to help.</p>")
.append(" <p>Happy shopping!</p>")
.append(" <p><strong>The E-Commerce Team</strong></p>")
.append(" </div>")
.append(" <div class=\"footer\">")
.append(" <p>© 2024 E-Commerce Store. All rights reserved.</p>")
.append(" <p>1234 Commerce Street, Business City, BC 12345</p>")
.append(" </div>")
.append(" </div>")
.append("</body>")
.append("</html>");
return processTemplate(template.toString(), variables);
}
}