Extract getPageBase

main.go

@@ -281,22 +281,33 @@ func (h *historyHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err = t.Execute(w, historyPage{
-		pageBaseInfo: pageBaseInfo{
-			BaseURL:     ClientID,
-			RedirectURI: RedirectURI,
-		},
+	pageBase := getPageBase()
+	pageData := historyPage{
+		pageBaseInfo: pageBase,
 		Session:      sess,
 		Title:        "History of " + cleanTitle(page),
 		Name:         page,
 		History:      history,
-	})
+	}
+
+	err = t.Execute(w, pageData)
 	if err != nil {
 		http.Error(w, err.Error(), 500)
 		return
 	}
 }
 
+func getPageBase() pageBaseInfo {
+	clientID := ClientID
+	redirectURI := RedirectURI
+
+	pageBase := pageBaseInfo{
+		BaseURL:     clientID,
+		RedirectURI: redirectURI,
+	}
+	return pageBase
+}
+
 func (h *saveHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	defer r.Body.Close()
 
@@ -395,11 +406,9 @@ func (h *editHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 `, html.EscapeString(pageText)))
 	}
 
+	pageBase := getPageBase()
 	data := editPage{
-		pageBaseInfo: pageBaseInfo{
-			BaseURL:     ClientID,
-			RedirectURI: RedirectURI,
-		},
+		pageBaseInfo: pageBase,
 		Session:  sess,
 		Title:    cleanTitle(page),
 		Content:  pageText,
@@ -500,11 +509,9 @@ func (h *indexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	)
 	pageText = md.RenderToString([]byte(pageText))
 
+	pageBase := getPageBase()
 	data := indexPage{
-		pageBaseInfo: pageBaseInfo{
-			BaseURL:     ClientID,
-			RedirectURI: RedirectURI,
-		},
+		pageBaseInfo: pageBase,
 		Session:  sess,
 		Title:    cleanTitle(page),
 		Content:  template.HTML(pageText),
@@ -574,11 +581,9 @@ func (h *recentHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	pageBase := getPageBase()
 	err = t.Execute(w, recentPage{
-		pageBaseInfo: pageBaseInfo{
-			BaseURL:     ClientID,
-			RedirectURI: RedirectURI,
-		},
+		pageBaseInfo: pageBase,
 		Session: sess,
 		Title:   "Recent changes",
 		Name:    "Recent changes",