Send notifications for mentions in pulls, issues, (code-)comments (#14218)

Fixes #14187: mention handling extracted from email notification code
Fixes #14013: add notification for mentions in pull request code comments
Fixes #13450: Not receiving any emails with setting "Only Email on Mention"

2 files changed, 31 insertions, 3 deletions

diff --git a/services/pull/pull.go b/services/pull/pull.go
index 476c5dad54..35dcbf9604 100644
--- a/services/pull/pull.go
+++ b/services/pull/pull.go
@@ -53,7 +53,12 @@ func NewPullRequest(repo *models.Repository, pull *models.Issue, labelIDs []int6
 		return err
 	}
 
-	notification.NotifyNewPullRequest(pr)
+	mentions, err := pull.FindAndUpdateIssueMentions(models.DefaultDBContext(), pull.Poster, pull.Content)
+	if err != nil {
+		return err
+	}
+
+	notification.NotifyNewPullRequest(pr, mentions)
 
 	// add first push codes comment
 	baseGitRepo, err := git.OpenRepository(pr.BaseRepo.RepoPath())
diff --git a/services/pull/review.go b/services/pull/review.go
index 6781136061..8994a9e78a 100644
--- a/services/pull/review.go
+++ b/services/pull/review.go
@@ -57,7 +57,12 @@ func CreateCodeComment(doer *models.User, gitRepo *git.Repository, issue *models
 			return nil, err
 		}
 
-		notification.NotifyCreateIssueComment(doer, issue.Repo, issue, comment)
+		mentions, err := issue.FindAndUpdateIssueMentions(models.DefaultDBContext(), doer, comment.Content)
+		if err != nil {
+			return nil, err
+		}
+
+		notification.NotifyCreateIssueComment(doer, issue.Repo, issue, comment, mentions)
 
 		return comment, nil
 	}
@@ -226,7 +231,25 @@ func SubmitReview(doer *models.User, gitRepo *git.Repository, issue *models.Issu
 		return nil, nil, err
 	}
 
-	notification.NotifyPullRequestReview(pr, review, comm)
+	ctx := models.DefaultDBContext()
+	mentions, err := issue.FindAndUpdateIssueMentions(ctx, doer, comm.Content)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	notification.NotifyPullRequestReview(pr, review, comm, mentions)
+
+	for _, lines := range review.CodeComments {
+		for _, comments := range lines {
+			for _, codeComment := range comments {
+				mentions, err := issue.FindAndUpdateIssueMentions(ctx, doer, codeComment.Content)
+				if err != nil {
+					return nil, nil, err
+				}
+				notification.NotifyPullRequestCodeComment(pr, codeComment, mentions)
+			}
+		}
+	}
 
 	return review, comm, nil
 }