100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package main
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import (
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"context"
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"fmt"
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"html/template"
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"net/http"
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"time"
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"github.com/Unknwon/i18n"
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"github.com/Xe/ln"
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)
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func logTemplateTime(name string, from time.Time) {
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now := time.Now()
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ln.Log(context.Background(), ln.F{"action": "template_rendered", "dur": now.Sub(from).String(), "name": name})
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}
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func (s *Site) renderTemplatePage(templateFname string, data interface{}) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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defer logTemplateTime(templateFname, time.Now())
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s.tlock.RLock()
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defer s.tlock.RUnlock()
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const fallbackLang = `en-US`
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getTranslation := func(group, key string, vals ...interface{}) string {
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var lang string
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locale, err := GetPreferredLocale(r)
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if err != nil {
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ln.Error(r.Context(), err)
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lang = fallbackLang
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goto skip
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}
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if !i18n.IsExist(locale.Lang) {
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lang = fallbackLang
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goto skip
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}
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lang = locale.Lang
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skip:
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return i18n.Tr(lang, group+"."+key, vals...)
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}
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funcMap := template.FuncMap{
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"trans": getTranslation,
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}
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var t = template.New(templateFname).Funcs(funcMap)
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var err error
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if s.templates[templateFname] == nil {
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t, err = template.ParseFiles("templates/base.html", "templates/"+templateFname)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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ln.Error(context.Background(), err, ln.F{"action": "renderTemplatePage", "page": templateFname})
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fmt.Fprintf(w, "error: %v", err)
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}
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ln.Log(context.Background(), ln.F{"action": "loaded_new_template", "fname": templateFname})
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s.tlock.RUnlock()
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s.tlock.Lock()
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s.templates[templateFname] = t
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s.tlock.Unlock()
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s.tlock.RLock()
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} else {
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t = s.templates[templateFname]
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}
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err = t.Execute(w, data)
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if err != nil {
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panic(err)
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}
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})
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}
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func (s *Site) showPost(w http.ResponseWriter, r *http.Request) {
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if r.RequestURI == "/blog/" {
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http.Redirect(w, r, "/blog", http.StatusSeeOther)
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return
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}
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var p *Post
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for _, pst := range s.Posts {
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if pst.Link == r.RequestURI[1:] {
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p = pst
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}
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}
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if p == nil {
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w.WriteHeader(http.StatusNotFound)
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s.renderTemplatePage("error.html", "no such post found: "+r.RequestURI).ServeHTTP(w, r)
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return
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}
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s.renderTemplatePage("blogpost.html", p).ServeHTTP(w, r)
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}
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