Fix init mail render logic (go-gitea#20704)

This bug affects tests which are sending emails (go-gitea#20307). Some tests reinitialise the web routes (like `TestNodeinfo`) which messed up the mail templates. There is no reason why the templates should be loaded in the routes method.

routers/web/web.go

@@ -22,7 +22,6 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/storage"
 	"code.gitea.io/gitea/modules/structs"
-	"code.gitea.io/gitea/modules/templates"
 	"code.gitea.io/gitea/modules/validation"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/modules/web/routing"
@@ -43,7 +42,6 @@ import (
 	context_service "code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/forms"
 	"code.gitea.io/gitea/services/lfs"
-	"code.gitea.io/gitea/services/mailer"
 
 	_ "code.gitea.io/gitea/modules/session" // to registers all internal adapters
 
@@ -152,8 +150,6 @@ func Routes() *web.Route {
 		common = append(common, h)
 	}
 
-	mailer.InitMailRender(templates.Mailer())
-
 	if setting.Service.EnableCaptcha {
 		// The captcha http.Handler should only fire on /captcha/* so we can just mount this on that url
 		routes.Route("/captcha/*", "GET,HEAD", append(common, captcha.Captchaer(context.GetImageCaptcha()))...)

services/mailer/mail.go

@@ -55,12 +55,6 @@ var (
 	subjectRemoveSpaces = regexp.MustCompile(`[\s]+`)
 )
 
-// InitMailRender initializes the mail renderer
-func InitMailRender(subjectTpl *texttmpl.Template, bodyTpl *template.Template) {
-	subjectTemplates = subjectTpl
-	bodyTemplates = bodyTpl
-}
-
 // SendTestMail sends a test mail
 func SendTestMail(email string) error {
 	if setting.MailService == nil {

services/mailer/mail_test.go

@@ -67,9 +67,8 @@ func prepareMailerTest(t *testing.T) (doer *user_model.User, repo *repo_model.Re
 func TestComposeIssueCommentMessage(t *testing.T) {
 	doer, _, issue, comment := prepareMailerTest(t)
 
-	stpl := texttmpl.Must(texttmpl.New("issue/comment").Parse(subjectTpl))
-	btpl := template.Must(template.New("issue/comment").Parse(bodyTpl))
-	InitMailRender(stpl, btpl)
+	subjectTemplates = texttmpl.Must(texttmpl.New("issue/comment").Parse(subjectTpl))
+	bodyTemplates = template.Must(template.New("issue/comment").Parse(bodyTpl))
 
 	recipients := []*user_model.User{{Name: "Test", Email: "test@gitea.com"}, {Name: "Test2", Email: "test2@gitea.com"}}
 	msgs, err := composeIssueCommentMessages(&mailCommentContext{
@@ -97,9 +96,8 @@ func TestComposeIssueCommentMessage(t *testing.T) {
 func TestComposeIssueMessage(t *testing.T) {
 	doer, _, issue, _ := prepareMailerTest(t)
 
-	stpl := texttmpl.Must(texttmpl.New("issue/new").Parse(subjectTpl))
-	btpl := template.Must(template.New("issue/new").Parse(bodyTpl))
-	InitMailRender(stpl, btpl)
+	subjectTemplates = texttmpl.Must(texttmpl.New("issue/new").Parse(subjectTpl))
+	bodyTemplates = template.Must(template.New("issue/new").Parse(bodyTpl))
 
 	recipients := []*user_model.User{{Name: "Test", Email: "test@gitea.com"}, {Name: "Test2", Email: "test2@gitea.com"}}
 	msgs, err := composeIssueCommentMessages(&mailCommentContext{
@@ -128,17 +126,15 @@ func TestTemplateSelection(t *testing.T) {
 	doer, repo, issue, comment := prepareMailerTest(t)
 	recipients := []*user_model.User{{Name: "Test", Email: "test@gitea.com"}}
 
-	stpl := texttmpl.Must(texttmpl.New("issue/default").Parse("issue/default/subject"))
-	texttmpl.Must(stpl.New("issue/new").Parse("issue/new/subject"))
-	texttmpl.Must(stpl.New("pull/comment").Parse("pull/comment/subject"))
-	texttmpl.Must(stpl.New("issue/close").Parse("")) // Must default to fallback subject
+	subjectTemplates = texttmpl.Must(texttmpl.New("issue/default").Parse("issue/default/subject"))
+	texttmpl.Must(subjectTemplates.New("issue/new").Parse("issue/new/subject"))
+	texttmpl.Must(subjectTemplates.New("pull/comment").Parse("pull/comment/subject"))
+	texttmpl.Must(subjectTemplates.New("issue/close").Parse("")) // Must default to fallback subject
 
-	btpl := template.Must(template.New("issue/default").Parse("issue/default/body"))
-	template.Must(btpl.New("issue/new").Parse("issue/new/body"))
-	template.Must(btpl.New("pull/comment").Parse("pull/comment/body"))
-	template.Must(btpl.New("issue/close").Parse("issue/close/body"))
-
-	InitMailRender(stpl, btpl)
+	bodyTemplates = template.Must(template.New("issue/default").Parse("issue/default/body"))
+	template.Must(bodyTemplates.New("issue/new").Parse("issue/new/body"))
+	template.Must(bodyTemplates.New("pull/comment").Parse("pull/comment/body"))
+	template.Must(bodyTemplates.New("issue/close").Parse("issue/close/body"))
 
 	expect := func(t *testing.T, msg *Message, expSubject, expBody string) {
 		subject := msg.ToMessage().GetHeader("Subject")
@@ -187,9 +183,8 @@ func TestTemplateServices(t *testing.T) {
 	expect := func(t *testing.T, issue *issues_model.Issue, comment *issues_model.Comment, doer *user_model.User,
 		actionType models.ActionType, fromMention bool, tplSubject, tplBody, expSubject, expBody string,
 	) {
-		stpl := texttmpl.Must(texttmpl.New("issue/default").Parse(tplSubject))
-		btpl := template.Must(template.New("issue/default").Parse(tplBody))
-		InitMailRender(stpl, btpl)
+		subjectTemplates = texttmpl.Must(texttmpl.New("issue/default").Parse(tplSubject))
+		bodyTemplates = template.Must(template.New("issue/default").Parse(tplBody))
 
 		recipients := []*user_model.User{{Name: "Test", Email: "test@gitea.com"}}
 		msg := testComposeIssueCommentMessage(t, &mailCommentContext{

services/mailer/mailer.go

@@ -24,6 +24,7 @@ import (
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/queue"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/templates"
 
 	"github.com/jaytaylor/html2text"
 	"gopkg.in/gomail.v2"
@@ -379,6 +380,8 @@ func NewContext() {
 	}, &Message{})
 
 	go graceful.GetManager().RunWithShutdownFns(mailQueue.Run)
+
+	subjectTemplates, bodyTemplates = templates.Mailer()
 }
 
 // SendAsync send mail asynchronously