package main

import (
	"log"
	"net/http"
	"strings"
)

// makeHandler возвращает http-хендлер, маршрутизирующий по первому сегменту пути.
func makeHandler(notifiers map[string]Notifier) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		paths := strings.Split(r.URL.Path, "/")
		if len(paths) < 2 || paths[1] == "" {
			w.WriteHeader(http.StatusNotFound)
			return
		}
		n, ok := notifiers[paths[1]]
		if !ok {
			w.WriteHeader(http.StatusNotFound)
			return
		}
		data := ExtractRequest(r)
		if err := n.Send(data); err != nil {
			log.Println(err)
			w.WriteHeader(http.StatusBadGateway)
			_, _ = w.Write([]byte(err.Error()))
			return
		}
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte("OK"))
	}
}