feat: page update notifications (#2074)

* feat: watchers notification and email preferences

* fix: email copy

* digests

* clean up

* fix

* clean up

* move backlinks queue-up to history processor

* fix

* fix keys

* feat: group notifications

* filter

* adjust email digest window

apps/server/src/collaboration/processors/history.processor.ts

@@ -1,8 +1,17 @@
 import { Logger, OnModuleDestroy } from '@nestjs/common';
 import { OnWorkerEvent, Processor, WorkerHost } from '@nestjs/bullmq';
-import { Job } from 'bullmq';
+import { InjectQueue } from '@nestjs/bullmq';
+import { Job, Queue } from 'bullmq';
 import { QueueJob, QueueName } from '../../integrations/queue/constants';
-import { IPageHistoryJob } from '../../integrations/queue/constants/queue.interface';
+import {
+  IPageBacklinkJob,
+  IPageHistoryJob,
+  IPageUpdateNotificationJob,
+} from '../../integrations/queue/constants/queue.interface';
+import {
+  extractMentions,
+  extractPageMentions,
+} from '../../common/helpers/prosemirror/utils';
 import { PageHistoryRepo } from '@docmost/db/repos/page/page-history.repo';
 import { PageRepo } from '@docmost/db/repos/page/page.repo';
 import { isDeepStrictEqual } from 'node:util';
@@ -18,6 +27,8 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
     private readonly pageRepo: PageRepo,
     private readonly collabHistory: CollabHistoryService,
     private readonly watcherService: WatcherService,
+    @InjectQueue(QueueName.NOTIFICATION_QUEUE) private notificationQueue: Queue,
+    @InjectQueue(QueueName.GENERAL_QUEUE) private generalQueue: Queue,
   ) {
     super();
   }
@@ -47,8 +58,7 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
         !lastHistory ||
         !isDeepStrictEqual(lastHistory.content, page.content)
       ) {
-        const contributorIds =
-          await this.collabHistory.popContributors(pageId);
+        const contributorIds = await this.collabHistory.popContributors(pageId);
 
         try {
           await this.watcherService.addPageWatchers(
@@ -61,12 +71,39 @@ export class HistoryProcessor extends WorkerHost implements OnModuleDestroy {
           await this.pageHistoryRepo.saveHistory(page, { contributorIds });
           this.logger.debug(`History created for page: ${pageId}`);
         } catch (err) {
-          await this.collabHistory.addContributors(
-            pageId,
-            contributorIds,
-          );
+          await this.collabHistory.addContributors(pageId, contributorIds);
           throw err;
         }
+
+        const mentions = extractMentions(page.content);
+        const pageMentions = extractPageMentions(mentions);
+
+        await this.generalQueue
+          .add(QueueJob.PAGE_BACKLINKS, {
+            pageId,
+            workspaceId: page.workspaceId,
+            mentions: pageMentions,
+          } as IPageBacklinkJob)
+          .catch((err) => {
+            this.logger.error(
+              `Failed to queue backlinks for ${pageId}: ${err.message}`,
+            );
+          });
+
+        if (contributorIds.length > 0 && lastHistory?.content) {
+          await this.notificationQueue
+            .add(QueueJob.PAGE_UPDATED, {
+              pageId,
+              spaceId: page.spaceId,
+              workspaceId: page.workspaceId,
+              actorIds: contributorIds,
+            } as IPageUpdateNotificationJob)
+            .catch((err) => {
+              this.logger.error(
+                `Failed to queue page update notification for ${pageId}: ${err.message}`,
+              );
+            });
+        }
       }
     } catch (err) {
       throw err;