Problem: can't fetch a block with the API

Solution: add route to fetch a single with the API

main.go

@@ -1066,6 +1066,37 @@ func main() {
 	mp = NewFilePages(dataDir, searchIndex)
 
 	http.Handle("/auth/", &authHandler{})
+	http.HandleFunc("/api/block/view", wrapAuth(func(w http.ResponseWriter, r *http.Request) {
+		defer r.Body.Close()
+
+		if !r.Context().Value(authKey).(bool) {
+			http.Error(w, "Unauthorized", 401)
+			return
+		}
+
+		if r.Method != "GET" {
+			http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
+			return
+		}
+
+		id := r.URL.Query().Get("id")
+
+		repo := blockRepo{dirname: "data"}
+		block, err := repo.Load(id)
+		if err != nil {
+			http.Error(w, err.Error(), 500)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		w.Header().Set("Cache-Control", "no-store")
+		enc := json.NewEncoder(w)
+		enc.SetIndent("", "  ")
+		err = enc.Encode(block)
+		if err != nil {
+			http.Error(w, err.Error(), 500)
+		}
+	}))
 	http.HandleFunc("/api/block/", wrapAuth(func(w http.ResponseWriter, r *http.Request) {
 		defer r.Body.Close()