package handler

import (
	"net/http"
	"rpc_safe_guard_01/pkg/okapi"
	"strings"
)

func Handler(w http.ResponseWriter, r *http.Request) {
	if r.Method != "POST" {
		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		return
	}

	contentType := r.Header.Get("Content-Type")
	if !strings.Contains(contentType, "application/json") {
		http.Error(w, "Unsupported media type", http.StatusUnsupportedMediaType)
		return
	}

	var req okapi.Request
	err := req.Decode(r)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	data, err := Execute(req)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.Write([]byte(data))
}