feat(web): send test email button (#10011)

* feat(web): test email button

* openapi

* UI button

* Show notification

* pr feedback

* remove jobs

* send email directly from repository and add feedback

* avoid sending many emails

* linter

* pr feedback

* lint

* lint

* lint

server/src/services/notification.service.ts

@@ -1,7 +1,8 @@
-import { Inject, Injectable } from '@nestjs/common';
+import { HttpException, HttpStatus, Inject, Injectable } from '@nestjs/common';
 import { DEFAULT_EXTERNAL_DOMAIN } from 'src/constants';
 import { SystemConfigCore } from 'src/cores/system-config.core';
 import { OnServerEvent } from 'src/decorators';
+import { SystemConfigSmtpDto } from 'src/dtos/system-config.dto';
 import { AlbumEntity } from 'src/entities/album.entity';
 import { IAlbumRepository } from 'src/interfaces/album.interface';
 import { IAssetRepository } from 'src/interfaces/asset.interface';
@@ -55,6 +56,38 @@ export class NotificationService {
     }
   }
 
+  async sendTestEmail(id: string, dto: SystemConfigSmtpDto) {
+    const user = await this.userRepository.get(id, { withDeleted: false });
+    if (!user) {
+      throw new Error('User not found');
+    }
+
+    try {
+      await this.notificationRepository.verifySmtp(dto.transport);
+    } catch (error) {
+      throw new HttpException('Failed to verify SMTP configuration', HttpStatus.BAD_REQUEST, { cause: error });
+    }
+
+    const { server } = await this.configCore.getConfig();
+    const { html, text } = this.notificationRepository.renderEmail({
+      template: EmailTemplate.TEST_EMAIL,
+      data: {
+        baseUrl: server.externalDomain || DEFAULT_EXTERNAL_DOMAIN,
+        displayName: user.name,
+      },
+    });
+
+    await this.notificationRepository.sendEmail({
+      to: user.email,
+      subject: 'Test email from Immich',
+      html,
+      text,
+      from: dto.from,
+      replyTo: dto.replyTo || dto.from,
+      smtp: dto.transport,
+    });
+  }
+
   async handleUserSignup({ id, tempPassword }: INotifySignupJob) {
     const user = await this.userRepository.get(id, { withDeleted: false });
     if (!user) {