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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package utils
import (
"bytes"
"html/template"
"net/http"
l4g "github.com/alecthomas/log4go"
"github.com/fsnotify/fsnotify"
"github.com/nicksnyder/go-i18n/i18n"
)
// Global storage for templates
var htmlTemplates *template.Template
type HTMLTemplate struct {
TemplateName string
Props map[string]interface{}
Html map[string]template.HTML
Locale string
}
func InitHTML() {
InitHTMLWithDir("templates")
}
func InitHTMLWithDir(dir string) {
if htmlTemplates != nil {
return
}
templatesDir, _ := FindDir(dir)
l4g.Debug(T("api.api.init.parsing_templates.debug"), templatesDir)
var err error
if htmlTemplates, err = template.ParseGlob(templatesDir + "*.html"); err != nil {
l4g.Error(T("api.api.init.parsing_templates.error"), err)
}
// Watch the templates folder for changes.
watcher, err := fsnotify.NewWatcher()
if err != nil {
l4g.Error(T("web.create_dir.error"), err)
}
go func() {
for {
select {
case event := <-watcher.Events:
if event.Op&fsnotify.Write == fsnotify.Write {
l4g.Info(T("web.reparse_templates.info"), event.Name)
if htmlTemplates, err = template.ParseGlob(templatesDir + "*.html"); err != nil {
l4g.Error(T("web.parsing_templates.error"), err)
}
}
case err := <-watcher.Errors:
l4g.Error(T("web.dir_fail.error"), err)
}
}
}()
err = watcher.Add(templatesDir)
if err != nil {
l4g.Error(T("web.watcher_fail.error"), err)
}
}
func NewHTMLTemplate(templateName string, locale string) *HTMLTemplate {
return &HTMLTemplate{
TemplateName: templateName,
Props: make(map[string]interface{}),
Html: make(map[string]template.HTML),
Locale: locale,
}
}
func (t *HTMLTemplate) addDefaultProps() {
var localT i18n.TranslateFunc
if len(t.Locale) > 0 {
localT = GetUserTranslations(t.Locale)
} else {
localT = T
}
t.Props["Footer"] = localT("api.templates.email_footer")
if *Cfg.EmailSettings.FeedbackOrganization != "" {
t.Props["Organization"] = localT("api.templates.email_organization") + *Cfg.EmailSettings.FeedbackOrganization
} else {
t.Props["Organization"] = ""
}
t.Html["EmailInfo"] = template.HTML(localT("api.templates.email_info",
map[string]interface{}{"SupportEmail": Cfg.SupportSettings.SupportEmail, "SiteName": Cfg.TeamSettings.SiteName}))
}
func (t *HTMLTemplate) Render() string {
t.addDefaultProps()
var text bytes.Buffer
if err := htmlTemplates.ExecuteTemplate(&text, t.TemplateName, t); err != nil {
l4g.Error(T("api.api.render.error"), t.TemplateName, err)
}
return text.String()
}
func (t *HTMLTemplate) RenderToWriter(w http.ResponseWriter) error {
t.addDefaultProps()
if err := htmlTemplates.ExecuteTemplate(w, t.TemplateName, t); err != nil {
l4g.Error(T("api.api.render.error"), t.TemplateName, err)
return err
}
return nil
}
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