fix: implement MailService and configuration for email notifications

.env.example

@@ -15,3 +15,11 @@ JWT_REFRESH_EXPIRES_IN=7d
 
 REDIS_HOST=redis
 REDIS_PORT=6381
+
+MAIL_HOST=smtp.gmail.com
+MAIL_PORT=587
+MAIL_SECURE=false
+MAIL_USER=your_gmail_user@gmail.com
+MAIL_PASS=your_gmail_app_password
+MAIL_FROM="FinWise <noreply@gmail.com>"
+APP_URL=http://localhost:7777
\ No newline at end of file

src/common/services/mail.service.ts

@@ -57,7 +57,7 @@ export class MailService {
   }
 
   async sendPasswordResetEmail(email: string, token: string, fullName?: string) {
-    const resetUrl = `${mailConfig.verificationUrl.replace('verify-email', 'reset-password')}?token=${token}`;
+    const resetUrl = `${mailConfig.resetPasswordUrl}?token=${token}`;
     const mailOptions = {
       from: mailConfig.from,
       to: email,

src/config/mail.config.ts

+const appUrl = process.env.APP_URL || 'http://localhost:7777';
+
 export const mailConfig = {
   host: process.env.MAIL_HOST || 'smtp.gmail.com',
   port: parseInt(process.env.MAIL_PORT || '587', 10),
@@ -7,5 +9,6 @@ export const mailConfig = {
     pass: process.env.MAIL_PASS || '',
   },
   from: process.env.MAIL_FROM || 'FinWise <noreply@gmail.com>',
-  verificationUrl: process.env.MAIL_VERIFICATION_URL || 'http://localhost:7777/api/v1/auth/verify-email',
+  verificationUrl: `${appUrl}/api/v1/auth/verify-email`,
+  resetPasswordUrl: `${appUrl}/api/v1/auth/reset-password`,
 };