mesh-go-example main logic

main.go

func main() {
	// Log into the Gentics Mesh backend to retrieve session cookie
	MeshLogin(USERNAME, PASSWORD)

	// Set up router handling incoming requests
	router := mux.NewRouter()
	router.HandleFunc("/", IndexHandler)
	router.HandleFunc("/{path:.*}", PathHandler)
	loggedRouter := handlers.LoggingHandler(os.Stdout, router)

	// Start http server
	log.Print("Starting HTTP Server on \"http://localhost:8081\"")
	err := http.ListenAndServe(":8081", loggedRouter)
	log.Print(err)
}

// IndexHandler handles requests to the webroot
func IndexHandler(w http.ResponseWriter, req *http.Request) {
	t, _ := template.ParseFiles("templates/base.html", "templates/navigation.html", "templates/welcome.html")
	data := templateData{
		Breadcrumb: LoadBreadcrumb(),
	}

	t.Execute(w, data)
}

// PathHandler handles requests all pages except the index
func PathHandler(w http.ResponseWriter, req *http.Request) {
	// Use the requested path on the webroot endpoint to get a node
	path := mux.Vars(req)["path"]
	r := MeshGetRequest("demo/webroot/" + path + "?resolveLinks=short")
	defer r.Body.Close()

	// Check if the loaded node is an image and simply pass through the data if
	// it is.
	if match, _ := regexp.MatchString("^image/.*", r.Header["Content-Type"][0]); match {
		w.Header().Set("Content-Type", r.Header["Content-Type"][0])
		io.Copy(w, r.Body)

	} else {
		// Otherwise parse the body to json
		bytes, _ := ioutil.ReadAll(r.Body)
		node := gjson.ParseBytes(bytes)

		// If the loaded node is a vehicle, render the product
		// detail page.
		if node.Get("schema.name").String() == "vehicle" {
			t, _ := template.ParseFiles("templates/base.html", "templates/navigation.html", "templates/productDetail.html")
			data := templateData{
				Breadcrumb: LoadBreadcrumb(),
				Products:   &[]gjson.Result{node},
			}
			t.Execute(w, data)
		} else {
			// In all other cases the node is a category, render product
			// list.
			t, _ := template.ParseFiles("templates/base.html", "templates/navigation.html", "templates/productList.html")
			data := templateData{
				Breadcrumb: LoadBreadcrumb(),
				Category:   &node,
				Products:   LoadChildren(node.Get("uuid").String()),
			}

			t.Execute(w, data)
		}
	}
}