fix: mention notification (#2670)

* fix: mention notification

* feat: updated mentions for comments in the notification background task

* feat: added subscription for issue_comment_mentions as well

* fix: removed the print statement

* fix: double notification popup for mentioned assignees

* fix: added issue subscriber

* fix: removed creator for subscribed

* fix: creator will not be subscribed to issue

* fix: double notification removed

---------

Co-authored-by: Henit Chobisa <chobisa.henit@gmail.com>

apiserver/plane/bgtasks/notification_task.py

@@ -1,8 +1,6 @@
 # Python imports
 import json
-
+import uuid
-# Django imports
-from django.utils import timezone
 
 # Module imports
 from plane.db.models import (
@@ -14,6 +12,7 @@ from plane.db.models import (
     Issue,
     Notification,
     IssueComment,
+    IssueActivity
 )
 
 # Third Party imports
@@ -21,12 +20,35 @@ from celery import shared_task
 from bs4 import BeautifulSoup
 
 
+    
+# =========== Issue Description Html Parsing and Notification Functions ======================
+
+def update_mentions_for_issue(issue, project, new_mentions, removed_mention):
+    aggregated_issue_mentions = []
+
+    for mention_id in new_mentions:
+        aggregated_issue_mentions.append(
+            IssueMention(
+                mention_id=mention_id,
+                issue=issue,
+                project=project,
+                workspace_id=project.workspace_id
+            )
+        )
+
+    IssueMention.objects.bulk_create(
+        aggregated_issue_mentions, batch_size=100)
+    IssueMention.objects.filter(
+        issue=issue, mention__in=removed_mention).delete()
+
+
 def get_new_mentions(requested_instance, current_instance):
     # requested_data is the newer instance of the current issue
     # current_instance is the older instance of the current issue, saved in the database
 
     # extract mentions from both the instance of data
     mentions_older = extract_mentions(current_instance)
+    
     mentions_newer = extract_mentions(requested_instance)
 
     # Getting Set Difference from mentions_newer
@@ -64,25 +86,26 @@ def extract_mentions_as_subscribers(project_id, issue_id, mentions):
         # If the particular mention has not already been subscribed to the issue, he must be sent the mentioned notification
         if not IssueSubscriber.objects.filter(
             issue_id=issue_id,
-            subscriber=mention_id,
+            subscriber_id=mention_id,
-            project=project_id,
+            project_id=project_id,
+        ).exists() and not IssueAssignee.objects.filter(
+            project_id=project_id, issue_id=issue_id,
+            assignee_id=mention_id
+        ).exists() and not Issue.objects.filter(
+            project_id=project_id, pk=issue_id, created_by_id=mention_id
         ).exists():
-            mentioned_user = User.objects.get(pk=mention_id)
 
             project = Project.objects.get(pk=project_id)
-            issue = Issue.objects.get(pk=issue_id)
 
             bulk_mention_subscribers.append(IssueSubscriber(
-                workspace=project.workspace,
+                workspace_id=project.workspace_id,
-                project=project,
+                project_id=project_id,
-                issue=issue,
+                issue_id=issue_id,
-                subscriber=mentioned_user,
+                subscriber_id=mention_id,
             ))
     return bulk_mention_subscribers
 
 # Parse Issue Description & extracts mentions
-
-
 def extract_mentions(issue_instance):
     try:
         # issue_instance has to be a dictionary passed, containing the description_html and other set of activity data.
@@ -101,6 +124,65 @@ def extract_mentions(issue_instance):
         return []
     
     
+# =========== Comment Parsing and Notification Functions ======================
+def extract_comment_mentions(comment_value):
+    try:
+        mentions = []
+        soup = BeautifulSoup(comment_value, 'html.parser')
+        mentions_tags = soup.find_all(
+            'mention-component', attrs={'target': 'users'}
+        )
+        for mention_tag in mentions_tags:
+            mentions.append(mention_tag['id'])
+        return list(set(mentions))
+    except Exception as e:
+        return []
+    
+def get_new_comment_mentions(new_value, old_value):
+    
+    mentions_newer = extract_comment_mentions(new_value)
+    if old_value is None:
+        return mentions_newer
+    
+    mentions_older = extract_comment_mentions(old_value)
+    # Getting Set Difference from mentions_newer
+    new_mentions = [
+        mention for mention in mentions_newer if mention not in mentions_older]
+
+    return new_mentions
+
+
+def createMentionNotification(project, notification_comment, issue, actor_id, mention_id, issue_id, activity):
+    return Notification(
+        workspace=project.workspace,
+        sender="in_app:issue_activities:mentioned",
+        triggered_by_id=actor_id,
+        receiver_id=mention_id,
+        entity_identifier=issue_id,
+        entity_name="issue",
+        project=project,
+        message=notification_comment,
+        data={
+            "issue": {
+                "id": str(issue_id),
+                "name": str(issue.name),
+                "identifier": str(issue.project.identifier),
+                "sequence_id": issue.sequence_id,
+                "state_name": issue.state.name,
+                "state_group": issue.state.group,
+            },
+            "issue_activity": {
+                "id": str(activity.get("id")),
+                "verb": str(activity.get("verb")),
+                "field": str(activity.get("field")),
+                "actor": str(activity.get("actor_id")),
+                "new_value": str(activity.get("new_value")),
+                "old_value": str(activity.get("old_value")),
+            }
+        },
+    )
+
+
 @shared_task
 def notifications(type, issue_id, project_id, actor_id, subscriber, issue_activities_created, requested_data, current_instance):
     issue_activities_created = (
@@ -137,50 +219,86 @@ def notifications(type, issue_id, project_id, actor_id, subscriber, issue_activi
         removed_mention = get_removed_mentions(
             requested_instance=requested_data, current_instance=current_instance)
         
+        comment_mentions = []
+        all_comment_mentions = []
+
         # Get New Subscribers from the mentions of the newer instance
         requested_mentions = extract_mentions(
             issue_instance=requested_data)
         mention_subscribers = extract_mentions_as_subscribers(
             project_id=project_id, issue_id=issue_id, mentions=requested_mentions)
         
-        issue_subscribers = list(
+        for issue_activity in issue_activities_created:
-            IssueSubscriber.objects.filter(
+            issue_comment = issue_activity.get("issue_comment")
-                project_id=project_id, issue_id=issue_id)
+            issue_comment_new_value = issue_activity.get("new_value")
-            .exclude(subscriber_id__in=list(new_mentions + [actor_id]))
+            issue_comment_old_value = issue_activity.get("old_value")
-            .values_list("subscriber", flat=True)
+            if issue_comment is not None:
-        )
+                # TODO: Maybe save the comment mentions, so that in future, we can filter out the issues based on comment mentions as well.
+                
+                all_comment_mentions = all_comment_mentions + extract_comment_mentions(issue_comment_new_value)
+                
+                new_comment_mentions = get_new_comment_mentions(old_value=issue_comment_old_value, new_value=issue_comment_new_value)
+                comment_mentions = comment_mentions + new_comment_mentions
+                
+        comment_mention_subscribers = extract_mentions_as_subscribers( project_id=project_id, issue_id=issue_id, mentions=all_comment_mentions)
+        """
+        We will not send subscription activity notification to the below mentioned user sets
+        - Those who have been newly mentioned in the issue description, we will send mention notification to them.
+        - When the activity is a comment_created and there exist a mention in the comment, then we have to send the "mention_in_comment" notification
+        - When the activity is a comment_updated and there exist a mention change, then also we have to send the "mention_in_comment" notification
+        """
         
         issue_assignees = list(
             IssueAssignee.objects.filter(
                 project_id=project_id, issue_id=issue_id)
-            .exclude(assignee_id=actor_id)
+            .exclude(assignee_id__in=list(new_mentions + comment_mentions))
             .values_list("assignee", flat=True)
         )
         
-        issue_subscribers = issue_subscribers + issue_assignees
+        issue_subscribers = list(
+            IssueSubscriber.objects.filter(
+                project_id=project_id, issue_id=issue_id)
+            .exclude(subscriber_id__in=list(new_mentions + comment_mentions + [actor_id]))
+            .values_list("subscriber", flat=True)
+        )
 
         issue = Issue.objects.filter(pk=issue_id).first()
 
+        if (issue.created_by_id is not None and str(issue.created_by_id) != str(actor_id)):
+            issue_subscribers = issue_subscribers + [issue.created_by_id]
+
         if subscriber:
             # add the user to issue subscriber
             try:
+                if str(issue.created_by_id) != str(actor_id) and uuid.UUID(actor_id) not in issue_assignees:
                     _ = IssueSubscriber.objects.get_or_create(
-                    issue_id=issue_id, subscriber_id=actor_id
+                        project_id=project_id, issue_id=issue_id, subscriber_id=actor_id
                     )
             except Exception as e:
                 pass
 
         project = Project.objects.get(pk=project_id)
 
-        for subscriber in list(set(issue_subscribers)):
+        issue_subscribers = list(set(issue_subscribers + issue_assignees) - {uuid.UUID(actor_id)})
+
+        for subscriber in issue_subscribers:
+            if subscriber in issue_subscribers:
+                sender = "in_app:issue_activities:subscribed"
+            if issue.created_by_id is not None and subscriber == issue.created_by_id:
+                sender = "in_app:issue_activities:created"
+            if subscriber in issue_assignees:
+                sender = "in_app:issue_activities:assigned"
+
             for issue_activity in issue_activities_created:
                 issue_comment = issue_activity.get("issue_comment")
                 if issue_comment is not None:
-                    issue_comment = IssueComment.objects.get(id=issue_comment, issue_id=issue_id, project_id=project_id, workspace_id=project.workspace_id)
+                    issue_comment = IssueComment.objects.get(
+                        id=issue_comment, issue_id=issue_id, project_id=project_id, workspace_id=project.workspace_id)
+                    
                 bulk_notifications.append(
                     Notification(
                         workspace=project.workspace,
-                        sender="in_app:issue_activities",
+                        sender=sender,
                         triggered_by_id=actor_id,
                         receiver_id=subscriber,
                         entity_identifier=issue_id,
@@ -215,15 +333,42 @@ def notifications(type, issue_id, project_id, actor_id, subscriber, issue_activi
 
         # Add Mentioned as Issue Subscribers
         IssueSubscriber.objects.bulk_create(
-            mention_subscribers, batch_size=100)
+            mention_subscribers + comment_mention_subscribers, batch_size=100)
+
+        last_activity = (
+            IssueActivity.objects.filter(issue_id=issue_id)
+            .order_by("-created_at")
+            .first()
+        )
+        
+        actor = User.objects.get(pk=actor_id)
+        
+        for mention_id in comment_mentions:
+            if (mention_id != actor_id):
+                for issue_activity in issue_activities_created:
+                    notification = createMentionNotification(
+                        project=project,
+                        issue=issue,
+                        notification_comment=f"{actor.display_name} has mentioned you in a comment in issue {issue.name}",
+                        actor_id=actor_id,
+                        mention_id=mention_id,
+                        issue_id=issue_id,
+                        activity=issue_activity
+                    )
+                    bulk_notifications.append(notification)
+                    
 
         for mention_id in new_mentions:
             if (mention_id != actor_id):
-                for issue_activity in issue_activities_created:
+                if (
+                    last_activity is not None
+                    and last_activity.field == "description"
+                    and actor_id == str(last_activity.actor_id)
+                ):
                     bulk_notifications.append(
                          Notification(
                              workspace=project.workspace,
-                            sender="in_app:issue_activities:mention",
+                            sender="in_app:issue_activities:mentioned",
                             triggered_by_id=actor_id,
                             receiver_id=mention_id,
                             entity_identifier=issue_id,
@@ -240,35 +385,34 @@ def notifications(type, issue_id, project_id, actor_id, subscriber, issue_activi
                                      "state_group": issue.state.group,
                                  },
                                  "issue_activity": {
-                                    "id": str(issue_activity.get("id")),
+                                     "id": str(last_activity.id),
-                                    "verb": str(issue_activity.get("verb")),
+                                     "verb": str(last_activity.verb),
-                                    "field": str(issue_activity.get("field")),
+                                     "field": str(last_activity.field),
-                                    "actor": str(issue_activity.get("actor_id")),
+                                     "actor": str(last_activity.actor_id),
-                                    "new_value": str(issue_activity.get("new_value")),
+                                     "new_value": str(last_activity.new_value),
-                                    "old_value": str(issue_activity.get("old_value")),
+                                     "old_value": str(last_activity.old_value),
                                  },
                              },
                          )
                      )
-
+                else:
-        # Create New Mentions Here
+                    for issue_activity in issue_activities_created:
-        aggregated_issue_mentions = []
+                        notification = createMentionNotification(
-
-        for mention_id in new_mentions:
-            mentioned_user = User.objects.get(pk=mention_id)
-            aggregated_issue_mentions.append(
-                IssueMention(
-                    mention=mentioned_user,
-                    issue=issue,
                             project=project,
-                    workspace=project.workspace
+                            issue=issue,
-                )
+                            notification_comment=f"You have been mentioned in the issue {issue.name}",
+                            actor_id=actor_id,
+                            mention_id=mention_id,
+                            issue_id=issue_id,
+                            activity=issue_activity
                         )
+                        bulk_notifications.append(notification)
 
-        IssueMention.objects.bulk_create(
+        # save new mentions for the particular issue and remove the mentions that has been deleted from the description
-            aggregated_issue_mentions, batch_size=100)
+        update_mentions_for_issue(issue=issue, project=project, new_mentions=new_mentions, 
-        IssueMention.objects.filter(
+                                  removed_mention=removed_mention)
-            issue=issue, mention__in=removed_mention).delete()
         
         # Bulk create notifications
         Notification.objects.bulk_create(bulk_notifications, batch_size=100)
+        
+