Statically compile templates in the final binary (#84)

pkg/mail/send_mail.go

@@ -19,10 +19,12 @@ package mail
 import (
 	"bytes"
 	"code.vikunja.io/api/pkg/config"
+	"code.vikunja.io/api/pkg/log"
+	"code.vikunja.io/api/pkg/static"
 	"code.vikunja.io/api/pkg/utils"
-	"github.com/labstack/gommon/log"
+	"github.com/shurcooL/httpfs/html/vfstemplate"
 	"gopkg.in/gomail.v2"
-	"text/template"
+	"html/template"
 )
 
 // Opts holds infos for a mail
@@ -84,8 +86,10 @@ func SendMailWithTemplate(to, subject, tpl string, data map[string]interface{})
 	var htmlContent bytes.Buffer
 	var plainContent bytes.Buffer
 
-	t := &Template{
-		Templates: template.Must(template.ParseGlob(config.ServiceRootpath.GetString() + "/templates/mail/*.tmpl")),
+	t, err := vfstemplate.ParseGlob(static.Templates, nil, "*.tmpl")
+	if err != nil {
+		log.Log.Errorf("SendMailWithTemplate: ParseGlob: %v", err)
+		return
 	}
 
 	boundary := "np" + utils.MakeRandomString(13)
@@ -93,13 +97,13 @@ func SendMailWithTemplate(to, subject, tpl string, data map[string]interface{})
 	data["Boundary"] = boundary
 	data["FrontendURL"] = config.ServiceFrontendurl.GetString()
 
-	if err := t.Templates.ExecuteTemplate(&htmlContent, tpl+".html.tmpl", data); err != nil {
-		log.Error(3, "Template: %v", err)
+	if err := t.ExecuteTemplate(&htmlContent, tpl+".html.tmpl", data); err != nil {
+		log.Log.Errorf("ExecuteTemplate: %v", err)
 		return
 	}
 
-	if err := t.Templates.ExecuteTemplate(&plainContent, tpl+".plain.tmpl", data); err != nil {
-		log.Error(3, "Template: %v", err)
+	if err := t.ExecuteTemplate(&plainContent, tpl+".plain.tmpl", data); err != nil {
+		log.Log.Errorf("ExecuteTemplate: %v", err)
 		return
 	}
 

pkg/static/static.go

@@ -0,0 +1,21 @@
+//   Vikunja is a todo-list application to facilitate your life.
+//   Copyright 2019 Vikunja and contributors. All rights reserved.
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//go:generate go run -tags=dev templates_generate.go
+
+package static
+
+// The single purpose of this file is to invoke the generation of static files

pkg/static/templates.go

@@ -0,0 +1,23 @@
+//   Vikunja is a todo-list application to facilitate your life.
+//   Copyright 2019 Vikunja and contributors. All rights reserved.
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build dev
+
+package static
+
+import "net/http"
+
+var Templates http.FileSystem = http.Dir(`templates/mail`)

pkg/static/templates_generate.go

@@ -0,0 +1,37 @@
+//   Vikunja is a todo-list application to facilitate your life.
+//   Copyright 2019 Vikunja and contributors. All rights reserved.
+//
+//   This program is free software: you can redistribute it and/or modify
+//   it under the terms of the GNU General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public License
+//   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+// +build ignore
+
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"github.com/shurcooL/vfsgen"
+)
+
+func main() {
+	err := vfsgen.Generate(http.Dir(`../../templates/mail`), vfsgen.Options{
+		PackageName:  "static",
+		BuildTags:    "!dev",
+		VariableName: "Templates",
+	})
+	if err != nil {
+		log.Fatalln(err)
+	}
+}