[BugFix] Avoid mailing explicit unwatched (#10475)

* Avoid mailing explicit unwatched

* CI.restart()

* back to normal

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

models/issue_watch.go

@@ -64,11 +64,11 @@ func getIssueWatch(e Engine, userID, issueID int64) (iw *IssueWatch, exists bool
 	return
 }
 
-// GetIssueWatchersIDs returns IDs of subscribers to a given issue id
+// GetIssueWatchersIDs returns IDs of subscribers or explicit unsubscribers to a given issue id
 // but avoids joining with `user` for performance reasons
 // User permissions must be verified elsewhere if required
-func GetIssueWatchersIDs(issueID int64) ([]int64, error) {
-	return getIssueWatchersIDs(x, issueID, true)
+func GetIssueWatchersIDs(issueID int64, watching bool) ([]int64, error) {
+	return getIssueWatchersIDs(x, issueID, watching)
 }
 
 func getIssueWatchersIDs(e Engine, issueID int64, watching bool) ([]int64, error) {

services/mailer/mail_issue.go

@@ -62,7 +62,7 @@ func mailIssueCommentToParticipants(ctx *mailCommentContext, mentions []int64) e
 	unfiltered = append(unfiltered, ids...)
 
 	// =========== Issue watchers ===========
-	ids, err = models.GetIssueWatchersIDs(ctx.Issue.ID)
+	ids, err = models.GetIssueWatchersIDs(ctx.Issue.ID, true)
 	if err != nil {
 		return fmt.Errorf("GetIssueWatchersIDs(%d): %v", ctx.Issue.ID, err)
 	}
@@ -80,6 +80,14 @@ func mailIssueCommentToParticipants(ctx *mailCommentContext, mentions []int64) e
 
 	// Avoid mailing the doer
 	visited[ctx.Doer.ID] = true
+	// Avoid mailing explicit unwatched
+	ids, err = models.GetIssueWatchersIDs(ctx.Issue.ID, false)
+	if err != nil {
+		return fmt.Errorf("GetIssueWatchersIDs(%d): %v", ctx.Issue.ID, err)
+	}
+	for _, i := range ids {
+		visited[i] = true
+	}
 
 	if err = mailIssueCommentBatch(ctx, unfiltered, visited, false); err != nil {
 		return fmt.Errorf("mailIssueCommentBatch(): %v", err)