Implementing embended image sending with email media messenger ##83

src/backend/model/mediamessengers/EmailMediaMessenger.ts

@@ -1,7 +1,13 @@
 import {createTransport, Transporter} from 'nodemailer';
-import {MediaDTO} from '../../../common/entities/MediaDTO';
+import {MediaDTO, MediaDTOUtils} from '../../../common/entities/MediaDTO';
 import {Config} from '../../../common/config/private/Config';
 import {EmailMessagingType} from '../../../common/config/private/MessagingConfig';
+import {PhotoProcessing} from '../fileprocessing/PhotoProcessing';
+import {ThumbnailSourceType} from '../threading/PhotoWorker';
+import {ProjectPath} from '../../ProjectPath';
+import * as path from 'path';
+import {PhotoMetadata} from '../../../common/entities/PhotoDTO';
+import {Utils} from '../../../common/Utils';
 
 export class EmailMediaMessenger {
   transporter: Transporter;
@@ -26,6 +32,15 @@ export class EmailMediaMessenger {
 
   }
 
+  private async getThumbnail(m: MediaDTO) {
+    return await PhotoProcessing.generateThumbnail(
+      path.join(ProjectPath.ImageFolder, m.directory.path, m.directory.name, m.name),
+      Config.Media.Thumbnail.thumbnailSizes[0],
+      MediaDTOUtils.isPhoto(m) ? ThumbnailSourceType.Photo : ThumbnailSourceType.Video,
+      false
+    );
+  }
+
   public async sendMedia(mailSettings: {
     from: string,
     to: string,
@@ -33,11 +48,47 @@ export class EmailMediaMessenger {
     text: string
   }, media: MediaDTO[]) {
 
+    const attachments = [];
+    const htmlStart = '<h1 style="text-align: center; margin-bottom: 2em">' + Config.Server.applicationTitle + '</h1>\n' +
+      '<h3>' + mailSettings.text + '</h3>\n' +
+      '<table style="margin-left: auto;  margin-right: auto;">\n' +
+      '  <tbody>\n';
+    const htmlEnd = '  </tr>\n' +
+      '  </tbody>\n' +
+      '</table>';
+    let htmlMiddle = '';
+    for (let i = 0; i < media.length; ++i) {
+      const thPath = await this.getThumbnail(media[i]);
+      const linkUrl = Utils.concatUrls(Config.Server.publicUrl, '/gallery/', path.join(media[i].directory.path, media[i].directory.name));
+      const location = (media[0].metadata as PhotoMetadata).positionData?.country ?
+        (media[0].metadata as PhotoMetadata).positionData?.country :
+        ((media[0].metadata as PhotoMetadata).positionData?.city ?
+          (media[0].metadata as PhotoMetadata).positionData?.city : '');
+      const caption = (new Date(media[0].metadata.creationDate)).getFullYear() + (location ? ', ' + location : '');
+      attachments.push({
+        filename: media[i].name,
+        path: thPath,
+        cid: 'img' + i
+      });
+      if (i % 2 == 0) {
+        htmlMiddle += '<tr>';
+      }
+      htmlMiddle += '<td>\n' +
+        '      <a style="display: block;text-align: center;" href="' + linkUrl + '"><img alt="' + media[i].name + '" style="max-width: 200px; height: 150px" src="cid:img' + i + '"/></a>\n' +
+        caption +
+        '    </td>\n';
+
+      if (i % 2 == 1 || i === media.length - 1) {
+        htmlMiddle += '</tr>';
+      }
+    }
+
     return await this.transporter.sendMail({
       from: mailSettings.from,
       to: mailSettings.to,
       subject: mailSettings.subject,
-      text: mailSettings.text + media.map(m => m.name).join(', ')
+      html: htmlStart + htmlMiddle + htmlEnd,
+      attachments: attachments
     });
   }
 }