http.handler.go

import (
	"net/http"
  "log"
)

func main() {
	http.Handle("/", reactServer())
	http.Handle("/dist/", assetHandler())
	http.HandleFunc("/api/", apiHandler)
	api.Init()
	log.Fatal(http.ListenAndServe(":8000", nil))
}

func assetHandler() http.Handler {
	return http.FileServer(http.Dir("."))
}

func reactServer() http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		http.ServeFile(w, r, "index.html")
		log.Printf("Serving index.html")
	}
	return http.HandlerFunc(fn)
}

func apiHandler(w http.ResponseWriter, req *http.Request) {
	cmd := req.URL.Path[len("/api/"):]
	if cmd[0:2] == "pr" {
		PRHandler(w, req)
	} else {
		fmt.Fprintf(w, "Support for %v not implemented!\n", cmd)
		log.Printf("Support for %v not implemented!\n", cmd)
	}
}

func PRHandler(w http.ResponseWriter, req *http.Request) {
	components := strings.Split(req.URL.Path[len("/api/pr/"):], "/")
	if len(components) != 2 {
		log.Printf("invalid url %s", req.URL.Path)
		return
	}
  // etc. etc.
}