var gmap;
var geocoder;

function initialize() {
    var mapOptions = {
        zoom: 13,
        center: new google.maps.LatLng(35.023319, 135.763292),
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: true,
        mapTypeControlOptions: {
            style: google.maps.MapTypeControlStyle.DROPDOWN_MENU
        },
        scaleControl: true,
        zoomControl: true,
        zoomControlOptions: {
            style: google.maps.ZoomControlStyle.SMALL
        }
    };
    gmap = new google.maps.Map(document.getElementById('map-canvas'),
        mapOptions);
    geocoder = new google.maps.Geocoder();
    getGeolocation(true);
    $("#map-canvas").css('height', $("#container").css('height'));
    $("#address").on("focus", function() {
        if ($("#address").val() == "Address in English  / 中文地址") { //"Enter an address in English  / 请中文输入地址"
            $("#address").val("");
        }
    });
    $("#address").smartenter(function() {
        callGeodosuGeocoder();
    });
    $("#search").on("click", callGeodosuGeocoder);
    setInterval(function() {
        getGeolocation(false)
    }, 10000);
}

function getGeolocation(move) {
    return; //temporaly disabled
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(function(position) {
            var pos = new google.maps.LatLng(position.coords.latitude,
                position.coords.longitude);
            if (gmap.currentMarker != null) {
                gmap.currentMarker.setMap(null);
                gmap.currentMarker = null;
            }
            var image = {
                url: './img/blue_circle.png',
                origin: new google.maps.Point(0, 0),
                anchor: new google.maps.Point(10, 10),
                scaledSize: new google.maps.Size(20, 20)
            };
            gmap.currentMarker = new google.maps.Marker({
                position: pos,
                map: gmap,
                icon: image,
                title: "You are Here"
            });
            if (move) {
                gmap.setCenter(pos);
            }
        }, function() {
            $("#currentlocation").html("GeoLocation Unavailable/");
        });
    } else {
        $("#currentlocation").html("GeoLocation Unavailable/");
    }
}


function callGeodosuGeocoder() {
    var s = document.getElementById('__universal_script_get');
    if (s != null) {
        s.parentNode.removeChild(s); //prevent a lot of script elements created
        s = null;
    }
    s = document.createElement("script");
    s.setAttribute("id", "__universal_script_get");
    s.setAttribute("type", "text/javascript");
    s.setAttribute("charset", "utf-8");
    s.setAttribute("onload", "geodosuCallback()");
    s.setAttribute("src", "./callGeodosu.js?address=" + encodeURI($("#address").val()));
    document.body.appendChild(s);
}

function geodosuCallback() {
    if (gmap.jsonret["lat"] == "" || gmap.jsonret["lon"] == "") {
        //Call Google Geocoder
        callGoogleGeocoder(gmap.jsonret["query_address"], null, null, null);
    } else {
        //Succeed
        if (gmap.jsonret["CompletePostalAddress"] == "banchi") {
            //alert(gmap.jsonret["pre_processed_postal_address"]);
            //Call Google Geocoder for precise result
            callGoogleGeocoder(gmap.jsonret["query_address"], gmap.jsonret["lat"] - 0, gmap.jsonret["lon"] - 0, gmap.jsonret["detectedType"]);
        } else {
            //Use Geodosu's result
            placeMarker(gmap.jsonret["lat"], gmap.jsonret["lon"], gmap.jsonret["query_address"]);
            gmap.jsonret = null;
        }
    }
    var s = document.getElementById('__universal_script_get');
    if (s != null) {
        s.parentNode.removeChild(s); //prevent a lot of script elements created
        s = null;
    }
}

function callGoogleGeocoder(address, geodosulat, geodosulon, geodosulevel) {
    geocoder.geocode({
        'address': address
    }, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
            var bestPos = results[0].geometry.location;
            var bestType = results[0].geometry.location_type;
            for (var i = 0; i < results.length; i++) {
                if (results[i].geometry.location_type == google.maps.GeocoderLocationType.ROOFTOP) {
                    bestPos = results[i].geometry.location;
                    bestType = results[i].geometry.location_type;
                } else if (bestType == google.maps.GeocoderLocationType.APPROXIMATE && results[i].geometry.location_type == google.maps.GeocoderLocationType.GEOMETRIC_CENTER) {
                    bestPos = results[i].geometry.location;
                    bestType = results[i].geometry.location_type;
                } else if (bestType == google.maps.GeocoderLocationType.GEOMETRIC_CENTER && results[i].geometry.location_type == google.maps.GeocoderLocationType.RANGE_INTERPOLATED) {
                    bestPos = results[i].geometry.location;
                    bestType = results[i].geometry.location_type;
                }
            }
            //Choose Best
            if (geodosulat == null || geodosulon == null) {
                placeMarker(bestPos.lat(), bestPos.lng(), gmap.jsonret["query_address"]);
            } else if (bestPos == google.maps.GeocoderLocationType.ROOFTOP) {
                placeMarker(bestPos.lat(), bestPos.lng(), gmap.jsonret["query_address"]);
            } else if (bestPos != google.maps.GeocoderLocationType.ROOFTOP && (gmap.jsonret["detectedType"] == "twoStreets" || gmap.jsonret["detectedType"] == "crossingName")) {
                placeMarker(geodosulat, geodosulon, gmap.jsonret["query_address"]);
            } else {
                placeMarker(bestPos.lat(), bestPos.lng(), gmap.jsonret["query_address"]);
            }
            gmap.jsonret = null;
        } else {
            if (geodosulat == null || geodosulon == null) {
                alert('Address Not Found / 地址未发现');
            } else {
                placeMarker(geodosulat, geodosulon, gmap.jsonret["query_address"]);
                gmap.jsonret = null;
            }
        }
    });
}

function placeMarker(lat, lon, address) {
    var pos = new google.maps.LatLng(lat, lon);
    gmap.setCenter(pos);
    gmap.setZoom(17);
    if (gmap.targetMarker != null) {
        gmap.targetMarker.setMap(null);
        gmap.targetMarker = null;
    }
    var image = {
        url: './img/red_marker.png',
        origin: new google.maps.Point(0, 0),
        anchor: new google.maps.Point(10, 34),
        scaledSize: new google.maps.Size(20, 34)
    };
    gmap.targetMarker = new google.maps.Marker({
        position: pos,
        map: gmap,
        icon: image,
        title: address
    });
    google.maps.event.addListener(gmap.targetMarker, 'click', function() {
        if (confirm("Open Map Application? \n 打开地图应用?")) {
            var pos = gmap.targetMarker.getPosition();
            window.open("http://maps.apple.com/?q=" + pos.lat() + "," + pos.lng());
        }
    });

}

google.maps.event.addDomListener(window, 'load', initialize);