/* 朝日中央地区: LatLng(38.671707, 139.795534), LatLng(38.572461, 139.880335) */
document.addEventListener("DOMContentLoaded", () => {
    var bounds = [[38.671707, 139.795534], [38.572461, 139.880335]]
    var center = [38.617121, 139.8417];
    var inizoom = 13;
    var infobox = document.getElementById("info");
    var mymapL = L.map("leftmap").setView(center, inizoom);
    L.tileLayer('//{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
	attribution:
	'&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
    }).addTo(mymapL);
    mymapL.on('contextmenu', (e) => {
	// alert(e.latlng);
	let b=mymapL.getBounds(),
	    b1=b.getNorthWest(), b2=b.getSouthEast();
	infobox.innerText = `${e.latlng}, bound=${b1}, ${b2}`;
    });
    var mymapR = L.map("rightmap").setView(center, inizoom);
    // LatLng(38.903357, 139.813385), LatLng(38.878639, 139.834585)
    var leftBounds = mymapL.getBounds();
    L.imageOverlay("asahi-chuo2.jpg", bounds).addTo(mymapR);
    // L.imageOverlay("asahi-chuo2.jpg", leftBounds).addTo(mymapR);
    mymapR.setMaxBounds(bounds);
    function syncmap(srcmap, destmap) { // mapをlatLng中心にする
	var z=srcmap.getZoom(), c=srcmap.getCenter()
	destmap.setZoom(z); destmap.setView(c);
	infobox.innerText = `Center: ${c}, zm=${z}`;
    }
    
    var gpsmarker = L.marker(mymapL.getCenter()).addTo(mymapL);
    gpsmarker.bindPopup("START").openPopup();
    var geticon = L.icon({iconUrl:"Yellow.png",iconSize:[40,41],iconAnchor:[10,41],popupAnchor:[3,-40]});
    var gpsmarkerR = L.marker(mymapR.getCenter()).addTo(mymapR);
    var nTrial = 10;
    var watchId = null;
    
    let titen =[];
    let marker =[];
    let judge = [];
    
    function getCSV(){
	var req = new XMLHttpRequest();
	req.open("get", "latlng.csv", true);
	req.send(null);
	
	req.onload =function(){
	    convertCSVtoArray(req.responseText);
	}
    }
    function convertCSVtoArray(str) {
	var point =[];
	var tmp = str.split("\n");
	for(var x=1;x<tmp.length;x++){
	    point[x] = tmp[x].split(',');
	    for(var i2 = 0; i2 < point[x].length; i2++){
		if(point[x][i2].match(/\-?\d+(.\d+)?(e[\+\-]d+)?/)){
		    point[x][i2] = parseFloat(point[x][i2].replace('"',''));
		}
	    }
	    titen[x] = L.latLng(point[x]);
	    marker[x] = L.marker(point[x]).addTo(mymapL);
	}
    }
    getCSV();
    
    function stopGPS() {
	console.log("watchId="+watchId);
	if (watchId != null) {
	    navigator.geolocation.clearWatch(watchId);
	    gpsmarker.setPopupContent("停止");
	}
	watchId = null;
    }
    function tryWatchGPS() {
	stopGPS();
	watchId = navigator.geolocation.watchPosition(
	    onSuccess,onError,{
		maximumAge: 0, timeout: 3000, enableHighAccuracy: true});
    }
    
    function onSuccess(pos) {
	var latlng = L.latLng([pos.coords.latitude, pos.coords.longitude]);
	mymapL.panTo(latlng);
	console.log(latlng);
	gpsmarker.setLatLng(latlng).setPopupContent(
	    "lat="+latlng.lat+",lng="+latlng.lng+"です"
	).openPopup();
	gpsmarkerR.setLatLng(latlng);
	for (var i in titen){
	    if (latlng.distanceTo(titen[i]) < 50){
		if (!judge[i]){
		    judge[i] = true;
		    alert("スタンプゲット!!!");
		    let img = document.getElementById(`image${i}`);
		    img.src = "sengoku.png";
		    marker[i].setIcon(geticon);
		}
	    }
	}
    }
    function onError(err) {
	restN = "あと"+(--nTrial)+"回試行します";
	gpsmarker.setPopupContent("補足失敗:"+restN).openPopup();
	if (nTrial <= 0) {
	    navigator.geolocation.clearWatch(watchId);
	}
    }
    
    mymapL.options.singleClickTimeout = 250;
    mymapL.on('singleclick', function(e) {
	if (true) {
	    latlng = L.latLng(e.latlng);
	    gpsmarker.setLatLng(e.latlng).setPopupContent(
		"lat="+latlng.lat+",lng="+latlng.lng+""
	    ).openPopup();
	    gpsmarkerR.setLatLng(e.latlng);
	}
	
	for (var i in titen) {
	    if (latlng.distanceTo(titen[i]) < 50) {
		if (!judge[i]){
		    judge[i] = true;
		    let img = document.getElementById(`image${i}`);
		    img.src = "sengoku.png";
		    alert("スタンプゲット!!!");
		    marker[i].setIcon(geticon);
		}
	    }
	}
    })
    
    
    mymapL.on('zoomend', (e) => {syncmap(mymapL, mymapR);});
    mymapL.on('moveend', (e) => {syncmap(mymapL, mymapR);});
    document.getElementById("start").addEventListener("click", tryWatchGPS);
    document.getElementById("stop").addEventListener("click", stopGPS);
});