server.go

package main

import (
	"log"
	"net/http"
)

func main() {
	mux := http.NewServeMux()
	mux.HandleFunc("GET /health", func(w http.ResponseWriter, _ *http.Request) {
		w.WriteHeader(http.StatusNoContent)
	})
	mux.HandleFunc("GET /accounts/{id}", func(w http.ResponseWriter, r *http.Request) {
		if r.Header.Get("X-Verified-Account-ID") != r.PathValue("id") {
			http.Error(w, "unauthorized", http.StatusUnauthorized)
			return
		}
		_, _ = w.Write([]byte("account ready\n"))
	})

	log.Fatal(http.ListenAndServe(":8080", mux))
}