Move all mail related codes from models to services/mailer (#7200)

* move all mail related codes from models to modules/mailer

* fix lint

* use DBContext instead Engine

* use WithContext not WithEngine

* Use DBContext instead of Engine

* don't use defer when sess.Close()

* move DBContext to context.go and add some methods

* move mailer from modules/ to services

* fix lint

* fix tests

* fix fmt

* add gitea copyright

* fix tests

* don't expose db functions

* make code clear

* add DefaultDBContext

* fix build

* fix bug

1 files changed, 6 insertions, 5 deletions

diff --git a/modules/notification/mail/mail.go b/modules/notification/mail/mail.go
index 9d0db4f415..e1ae391f78 100644
--- a/modules/notification/mail/mail.go
+++ b/modules/notification/mail/mail.go
@@ -8,6 +8,7 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/notification/base"
+	"code.gitea.io/gitea/services/mailer"
 )
 
 type mailNotifier struct {
@@ -36,13 +37,13 @@ func (m *mailNotifier) NotifyCreateIssueComment(doer *models.User, repo *models.
 		act = models.ActionCommentIssue
 	}
 
-	if err := comment.MailParticipants(act, issue); err != nil {
+	if err := mailer.MailParticipantsComment(comment, act, issue); err != nil {
 		log.Error("MailParticipants: %v", err)
 	}
 }
 
 func (m *mailNotifier) NotifyNewIssue(issue *models.Issue) {
-	if err := issue.MailParticipants(issue.Poster, models.ActionCreateIssue); err != nil {
+	if err := mailer.MailParticipants(issue, issue.Poster, models.ActionCreateIssue); err != nil {
 		log.Error("MailParticipants: %v", err)
 	}
 }
@@ -63,13 +64,13 @@ func (m *mailNotifier) NotifyIssueChangeStatus(doer *models.User, issue *models.
 		}
 	}
 
-	if err := issue.MailParticipants(doer, actionType); err != nil {
+	if err := mailer.MailParticipants(issue, doer, actionType); err != nil {
 		log.Error("MailParticipants: %v", err)
 	}
 }
 
 func (m *mailNotifier) NotifyNewPullRequest(pr *models.PullRequest) {
-	if err := pr.Issue.MailParticipants(pr.Issue.Poster, models.ActionCreatePullRequest); err != nil {
+	if err := mailer.MailParticipants(pr.Issue, pr.Issue.Poster, models.ActionCreatePullRequest); err != nil {
 		log.Error("MailParticipants: %v", err)
 	}
 }
@@ -83,7 +84,7 @@ func (m *mailNotifier) NotifyPullRequestReview(pr *models.PullRequest, r *models
 	} else if comment.Type == models.CommentTypeComment {
 		act = models.ActionCommentIssue
 	}
-	if err := comment.MailParticipants(act, pr.Issue); err != nil {
+	if err := mailer.MailParticipantsComment(comment, act, pr.Issue); err != nil {
 		log.Error("MailParticipants: %v", err)
 	}
 }