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myteamwallet_backend/src/mail/mail-config.service.ts

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+import * as path from 'path';
+import { Injectable } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { MailerOptions, MailerOptionsFactory } from '@nestjs-modules/mailer';
+import { HandlebarsAdapter } from '@nestjs-modules/mailer/dist/adapters/handlebars.adapter';
+
+@Injectable()
+export class MailConfigService implements MailerOptionsFactory {
+  constructor(private configService: ConfigService) {}
+
+  createMailerOptions(): MailerOptions {
+    return {
+      transport: {
+        host: this.configService.get('mail.host'),
+        port: this.configService.get('mail.port'),
+        ignoreTLS: this.configService.get('mail.ignoreTLS'),
+        secure: this.configService.get('mail.secure'),
+        requireTLS: this.configService.get('mail.requireTLS'),
+        auth: {
+          user: this.configService.get('mail.user'),
+          pass: this.configService.get('mail.password'),
+        },
+      },
+      defaults: {
+        from: `"${this.configService.get(
+          'mail.defaultName',
+        )}" <${this.configService.get('mail.defaultEmail')}>`,
+      },
+      template: {
+        dir: path.join(
+          this.configService.get('app.workingDirectory'),
+          'src',
+          'mail',
+          'mail-templates',
+        ),
+        adapter: new HandlebarsAdapter(),
+        options: {
+          strict: true,
+        },
+      },
+    } as MailerOptions;
+  }
+}