// Copyright 2014 by Sascha L. Teichmann
// Use of this source code is governed by the MIT license
// that can be found in the LICENSE file.

package main

import (
	"encoding/json"
	"log"
	"net/http"
)

type tileUpdater struct {
	mapDir    string
	redisHost string
	redisPort int
}

type xz struct {
	X int16
	Z int16
}

func newTileUpdater(mapDir, redisHost string, redisPort int) *tileUpdater {
	return &tileUpdater{
		mapDir:    mapDir,
		redisHost: redisHost,
		redisPort: redisPort}

}

func (tu *tileUpdater) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
	var err error
	var data []xz
	decoder := json.NewDecoder(r.Body)
	if err = decoder.Decode(&data); err != nil {
		log.Printf("WARN: JSON document broken: %s", err)
		http.Error(rw, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
		return
	}
	log.Printf("Changes: #%d %+v\n", len(data), data)
	rw.WriteHeader(http.StatusOK)
}