Introduce i18n. Теперь переведу сайт на русский!

cmd/dwelling-home/main.go

@@ -15,8 +15,10 @@ import (
 	"git.arav.su/Arav/dwelling-home/internal/version"
 	mfsqlite "git.arav.su/Arav/dwelling-home/pkg/mindflow/database/sqlite"
 	"git.arav.su/Arav/dwelling-home/web"
+	"git.arav.su/Arav/dwelling-home/web/locales"
 	"git.arav.su/Arav/httpr"
 	gb "git.arav.su/Arav/justguestbook"
+	"github.com/invopop/ctxi18n"
 )
 
 var (
@@ -50,6 +52,10 @@ func main() {
 	}
 	defer mindflowDB.Close()
 
+	if err := ctxi18n.LoadWithDefault(locales.Content, "en"); err != nil {
+		log.Fatalln("Failed to load i18n:", err)
+	}
+
 	hand := dwhttp.NewHandlers(*captchaExpiry, owner, *guestbookPageSize, guestbookDB, mindflowDB)
 
 	r := httpr.New()
@@ -101,7 +107,7 @@ func main() {
 	s.Handler(http.MethodPatch, "/category/:id", mindflowApi.EditCategory)
 	s.Handler(http.MethodDelete, "/category/:id", mindflowApi.DeleteCategory)
 
-	srv := dwhttp.NewHttpServer(r)
+	srv := dwhttp.NewHttpServer(I18nMiddleware(r))
 
 	if err := srv.Start(*listenAddress); err != nil {
 		log.Fatalln(err)
@@ -117,3 +123,13 @@ func main() {
 
 	<-doneSignal
 }
+
+func I18nMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		ctx, err := ctxi18n.WithLocale(r.Context(), r.Header.Get("Accept-Language"))
+		if err != nil {
+			log.Println("i18nmw:", err)
+		}
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}

internal/http/web_handlers.go

@@ -1,7 +1,6 @@
 package http
 
 import (
-	"context"
 	"log"
 	"math"
 	"net/http"
@@ -36,15 +35,15 @@ func NewHandlers(captchaExpire time.Duration, owner string, gbPageSize int64,
 }
 
 func (h *Handlers) Index(w http.ResponseWriter, r *http.Request) {
-	web.Index(r).Render(context.Background(), w)
+	web.Index(r).Render(r.Context(), w)
 }
 
 func (h *Handlers) Privacy(w http.ResponseWriter, r *http.Request) {
-	web.Privacy(r).Render(context.Background(), w)
+	web.Privacy(r).Render(r.Context(), w)
 }
 
 func (h *Handlers) Stuff(w http.ResponseWriter, r *http.Request) {
-	web.Stuff(r).Render(context.Background(), w)
+	web.Stuff(r).Render(r.Context(), w)
 }
 
 func (h *Handlers) Mindflow(w http.ResponseWriter, r *http.Request) {
@@ -62,7 +61,7 @@ func (h *Handlers) Mindflow(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	web.Mindflow(posts, categories, r).Render(context.Background(), w)
+	web.Mindflow(posts, categories, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) MindflowAdmin(w http.ResponseWriter, r *http.Request) {
@@ -78,7 +77,7 @@ func (h *Handlers) MindflowAdmin(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	web.MindflowAdmin(posts, categories, r).Render(context.Background(), w)
+	web.MindflowAdmin(posts, categories, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) About(w http.ResponseWriter, r *http.Request) {
@@ -96,7 +95,7 @@ func (h *Handlers) About(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	web.About(&lst, r).Render(context.Background(), w)
+	web.About(&lst, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) Article(w http.ResponseWriter, r *http.Request) {
@@ -107,7 +106,7 @@ func (h *Handlers) Article(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	web.Article(artcl.Title, artcl.Description, string(artcl.Body), name, artcl.Date, r).Render(context.Background(), w)
+	web.Article(artcl.Title, artcl.Description, string(artcl.Body), name, artcl.Date, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) Guestbook(w http.ResponseWriter, r *http.Request) {
@@ -144,7 +143,7 @@ func (h *Handlers) Guestbook(w http.ResponseWriter, r *http.Request) {
 	dwc := dwcaptcha.NewDwellingCaptcha(h.captchaExpire)
 	_, id := inmemdb.New(r.RemoteAddr, dwc)
 
-	web.Guestbook(string(id), h.owner, entries, pageCount, page, r).Render(context.Background(), w)
+	web.Guestbook(string(id), h.owner, entries, pageCount, page, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) GuestbookAdmin(w http.ResponseWriter, r *http.Request) {
@@ -158,7 +157,7 @@ func (h *Handlers) GuestbookAdmin(w http.ResponseWriter, r *http.Request) {
 		entry.Message = strings.ReplaceAll(entry.Message, "\\n", "\n")
 	}
 
-	web.GuestbookAdmin(h.owner, entries, r).Render(context.Background(), w)
+	web.GuestbookAdmin(h.owner, entries, r).Render(r.Context(), w)
 }
 
 func (h *Handlers) RSS(w http.ResponseWriter, r *http.Request) {
@@ -172,7 +171,7 @@ func (h *Handlers) RSS(w http.ResponseWriter, r *http.Request) {
 		scheme = "http"
 	}
 
-	web.RSS(scheme+"://"+r.Host, h.owner, posts, r).Render(context.Background(), w)
+	web.RSS(scheme+"://"+r.Host, h.owner, posts, r).Render(r.Context(), w)
 }
 
 func ServeAsset(path string) func(http.ResponseWriter, *http.Request) {
@@ -184,7 +183,7 @@ func ServeAsset(path string) func(http.ResponseWriter, *http.Request) {
 
 func Error(w http.ResponseWriter, code int, reason, message string, r *http.Request) {
 	w.WriteHeader(code)
-	web.ErrorXXX(code, reason, message, r).Render(context.Background(), w)
+	web.ErrorXXX(code, reason, message, r).Render(r.Context(), w)
 }
 
 func cleanupNewlines(text string) (out string) {

web/locales/en/en.yaml

@@ -0,0 +1,30 @@
+en:
+  base:
+    rss-feed: "RSS"
+    rss-feed-title: "Stay up to date on what's going on."
+    copy-author: "Alexander \"Arav\" Andreev"
+    privacy-statements-link: "Privacy statements"
+    menu:
+      home: "Home"
+      stuff: "Stuff"
+      mindflow: "Mindflow"
+      about: "About"
+      guestbook: "Guestbook"
+      privacy: "Privacy"
+  article:
+    go-back: "Back to a list"
+  guestbook:
+    description: "This is my guestbook. Welcome."
+    form:
+      name: "Name (Anonymous if left blank)"
+      website: "Website (optional)"
+      message: "Your message"
+      hide-website: "Hide website <small>(only I can see if set)</small>"
+      quote-usage: "Use > to make a quote."
+      captcha-validity: "Valid for <b>10</b> minutes."
+      send-post: "Send"
+    post:
+      by: "by"
+      on: "on"
+      reply: "Reply by"
+      no-posts: "No posts."

web/locales/locales.go

@@ -0,0 +1,9 @@
+package locales
+
+import (
+	"embed"
+)
+
+//go:embed en
+//go:embed ru
+var Content embed.FS

web/locales/ru/ru.yaml

@@ -0,0 +1,31 @@
+ru:
+  base:
+    rss-feed: "RSS"
+    rss-feed-title: "Будь в курсе происходящего."
+    copy-author: "Александр «Arav» Андреев"
+    privacy-statements-link: "О приватности"
+    section:
+      home: "Домой"
+      stuff: "Всякое"
+      mindflow: "Блог"
+      about: "О..."
+      guestbook: "Гостевая"
+      privacy: "Приватность"
+  article:
+    go-back: "К списку"
+  guestbook:
+    description: "Моя гостевая. Добро пожаловать."
+    form:
+      name: "Имя (Аноним если оставить пустым)"
+      website: "Вебсайт (необязательно)"
+      message: "Твоё сообщение"
+      hide-website-1: "Скрыть вебсайт"
+      hide-website-2: "(будет видно только мне)"
+      quote-usage: "Используй > для цитаты."
+      captcha-validity: "Действительна <b>10</b> минут."
+      send-post: "Отправить"
+    post:
+      by: "от"
+      on: " "
+      reply: "Ответ"
+      no-posts: "Нет постов."