Files
edr-platform/apps/edr-passenger-api/src/modules/notifications/notification.adapters.ts

217 lines
6.6 KiB
TypeScript

import { Injectable, Logger } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import * as sgMail from '@sendgrid/mail';
import { HttpService } from '@nestjs/axios';
import { firstValueFrom } from 'rxjs';
export interface NotificationChannel {
send(recipient: string, subject: string, body: string, context?: Record<string, unknown>): Promise<boolean>;
}
@Injectable()
export class EmailAdapter implements NotificationChannel {
private readonly logger = new Logger(EmailAdapter.name);
constructor(private readonly config: ConfigService) {
const apiKey = this.config.get<string>('SENDGRID_API_KEY');
if (apiKey) {
sgMail.setApiKey(apiKey);
this.logger.log('SendGrid Email adapter initialized');
} else {
this.logger.warn('SENDGRID_API_KEY not configured - emails will be logged only');
}
}
async send(
recipient: string,
subject: string,
body: string,
context?: Record<string, unknown>,
): Promise<boolean> {
const apiKey = this.config.get<string>('SENDGRID_API_KEY');
const fromEmail = this.config.get<string>('SENDGRID_FROM_EMAIL') || 'noreply@edr-platform.com';
if (!apiKey) {
this.logger.log(`[EMAIL MOCK] To: ${recipient} | Subject: ${subject} | Body: ${body.substring(0, 100)}`);
return true;
}
try {
const msg: sgMail.MailDataRequired = {
to: recipient,
from: fromEmail,
subject,
text: body,
html: this.formatHtml(body, context),
};
await sgMail.send(msg);
this.logger.log(`Email sent successfully to ${recipient}`);
return true;
} catch (err) {
const message = err instanceof Error ? err.message : String(err);
this.logger.error(`Failed to send email to ${recipient}: ${message}`);
return false;
}
}
private formatHtml(body: string, context?: Record<string, unknown>): string {
const contextHtml = context
? `<div style="margin-top: 20px; padding: 10px; background: #f5f5f5; border-radius: 4px;">
<small>${JSON.stringify(context, null, 2)}</small>
</div>`
: '';
return `
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; }
.container { max-width: 600px; margin: 0 auto; padding: 20px; }
.header { background: #0066cc; color: white; padding: 20px; text-align: center; }
.content { padding: 20px; background: white; }
.footer { text-align: center; padding: 20px; color: #666; font-size: 12px; }
</style>
</head>
<body>
<div class="container">
<div class="header">
<h2>Ethio-Djibouti Railway</h2>
</div>
<div class="content">
${body.replace(/\n/g, '<br>')}
${contextHtml}
</div>
<div class="footer">
<p>© 2024 Ethio-Djibouti Railway. All rights reserved.</p>
</div>
</div>
</body>
</html>
`;
}
}
@Injectable()
export class SmsAdapter implements NotificationChannel {
private readonly logger = new Logger(SmsAdapter.name);
constructor(
private readonly config: ConfigService,
private readonly http: HttpService,
) {
const provider = this.config.get<string>('SMS_PROVIDER');
this.logger.log(`SMS adapter initialized with provider: ${provider || 'MOCK'}`);
}
async send(
recipient: string,
subject: string,
body: string,
_context?: Record<string, unknown>,
): Promise<boolean> {
const provider = this.config.get<string>('SMS_PROVIDER');
const apiKey = this.config.get<string>('SMS_API_KEY');
if (!provider || !apiKey) {
this.logger.log(`[SMS MOCK] To: ${recipient} | Message: ${body.substring(0, 100)}`);
return true;
}
try {
switch (provider.toLowerCase()) {
case 'twilio':
return await this.sendViaTwilio(recipient, body);
case 'africastalking':
return await this.sendViaAfricasTalking(recipient, body);
default:
this.logger.warn(`Unknown SMS provider: ${provider}`);
return false;
}
} catch (err) {
const message = err instanceof Error ? err.message : String(err);
this.logger.error(`Failed to send SMS to ${recipient}: ${message}`);
return false;
}
}
private async sendViaTwilio(to: string, body: string): Promise<boolean> {
const accountSid = this.config.get<string>('TWILIO_ACCOUNT_SID');
const authToken = this.config.get<string>('TWILIO_AUTH_TOKEN');
const fromNumber = this.config.get<string>('TWILIO_FROM_NUMBER');
const url = `https://api.twilio.com/2010-04-01/Accounts/${accountSid}/Messages.json`;
const auth = Buffer.from(`${accountSid}:${authToken}`).toString('base64');
const response = await firstValueFrom(
this.http.post(
url,
new URLSearchParams({
To: to,
From: fromNumber || '',
Body: body,
}),
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'Authorization': `Basic ${auth}`,
},
},
),
);
return response.status === 201;
}
private async sendViaAfricasTalking(to: string, body: string): Promise<boolean> {
const apiKey = this.config.get<string>('SMS_API_KEY');
const username = this.config.get<string>('AFRICASTALKING_USERNAME');
const from = this.config.get<string>('AFRICASTALKING_FROM');
const url = 'https://api.africastalking.com/version1/messaging';
const response = await firstValueFrom(
this.http.post(
url,
new URLSearchParams({
username: username || '',
to,
message: body,
from: from || '',
}),
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
'apiKey': apiKey || '',
},
},
),
);
return response.status === 201;
}
}
@Injectable()
export class PushAdapter implements NotificationChannel {
private readonly logger = new Logger(PushAdapter.name);
constructor(private readonly config: ConfigService) {
this.logger.log('Push notification adapter initialized');
}
async send(
recipient: string,
subject: string,
body: string,
context?: Record<string, unknown>,
): Promise<boolean> {
// Push notifications would typically use FCM/APNS
// For now, just log
this.logger.log(`[PUSH MOCK] To: ${recipient} | Title: ${subject} | Body: ${body.substring(0, 100)}`);
return true;
}
}