@ideal-photography/shared/services/EmailNotificationService.js

Shared MongoDB and utility logic for Ideal Photography PWAs: users, products, services, bookings, orders/cart, galleries, reviews, notifications, campaigns, settings, audit logs, minimart items/orders, and push notification subscriptions.

import { sendMail } from '../utils/email.js';

// Mapping from templateKey to builder function imported lazily to avoid heavy require cost
const templateBuilders = {
    'welcome': async () => (await import('../utils/email.js')).buildWelcomeEmail,
    'verification-status': async () => (await import('../utils/email.js')).buildIDVerificationStatusEmail,
    'booking-confirmation': async () => (await import('../utils/email.js')).buildBookingConfirmationEmail,
    'payment-confirmation': async () => (await import('../utils/email.js')).buildPaymentConfirmationEmail,
    'booking-reminder': async () => (await import('../utils/email.js')).buildReminderEmail,
    'error-notification': async () => (await import('../utils/email.js')).buildErrorNotificationEmail,
    // add more mapping as templates are added
};

class EmailNotificationService {
    /**
     * Sends an email using a template builder
     * @param {string} templateKey   key in templateBuilders
     * @param {object} data          data passed to template builder
     * @param {string|string[]} to   recipient email(s)
     */
    static async send(templateKey, data, to) {
        if (!templateBuilders[templateKey]) {
            throw new Error(`Email template '${templateKey}' not registered`);
        }

        const builderImporter = templateBuilders[templateKey];
        const builder = await builderImporter();
        const { html, text } = builder(data);

        const subject = EmailNotificationService._deriveSubject(templateKey, data);

        return sendMail({ to, subject, html, text });
    }

    static _deriveSubject(templateKey, data) {
        switch (templateKey) {
            case 'welcome':
                return 'Welcome to IDEAS MEDIA COMPANY';
            case 'verification-status':
                return `ID Verification ${data.status === 'verified' ? 'Approved' : 'Update'}`;
            case 'booking-confirmation':
                return 'Your Booking is Confirmed!';
            case 'payment-confirmation':
                return 'Payment Received';
            case 'booking-reminder':
                return 'Session Reminder';
            case 'error-notification':
                return `🚨 Error in ${data.pwaType?.toUpperCase?.()} PWA - ${data.errorId}`;
            default:
                return 'Notification from IDEAS MEDIA COMPANY';
        }
    }
}

export default EmailNotificationService;