L.TileLayer.WMTS = L.TileLayer.extend({
    defaultWmtsParams: {
        service: 'WMTS',
        request: 'GetTile',
        version: '1.0.0',
        layers: '',
        styles: '',
        tilematrixSet: '',
        format: 'image/jpeg'
    },

    initialize: function (url, options) { // (String, Object)
        this._url = url;
        var wmtsParams = L.extend({}, this.defaultWmtsParams);
        var tileSize = options.tileSize || this.options.tileSize;
        if (options.detectRetina && L.Browser.retina) {
            wmtsParams.width = wmtsParams.height = tileSize * 2;
        } else {
            wmtsParams.width = wmtsParams.height = tileSize;
        }
        for (var i in options) {
            // all keys that are not TileLayer options go to WMTS params
            if (!this.options.hasOwnProperty(i) && i!="matrixIds" && i!= "jsonUrl") {
                wmtsParams[i] = options[i];
            }
        }
        this.wmtsParams = wmtsParams;
        this.matrixIds = options.matrixIds||this.getDefaultMatrix();
        L.setOptions(this, options);
    },

    onAdd: function (map) {
        this._crs = this.options.crs || map.options.crs;
        L.TileLayer.prototype.onAdd.call(this, map);
    },

    getParamString: function (obj, existingUrl, uppercase) {
        var params = [];
        for (var i in obj) {
            if (i == 'secret')
                continue;
            params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
        }
        return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
    },

    getTileUrl: function (coords) { // (Point, Number) -> String
        var url = L.Util.template(this._url, {s: this._getSubdomain(coords)});
        //argis版本的要-1
        url += this.getParamString(this.wmtsParams, url) + "&tilematrix=" + (coords.z) + "&tilerow=" + coords.y +"&tilecol=" + coords.x;
        if (this.wmtsParams.hnjhpt_rid) {
            var date = new Date();
            var time = date.getTime();
            var message = this.wmtsParams.hnjhpt_sid + this.wmtsParams.hnjhpt_rid + time;
            var hash = CryptoJS.HmacSHA256(message, this.wmtsParams.secret);
            var hashInBase64 = CryptoJS.enc.Base64.stringify(hash);
            url += "&hnjhpt_sign=" + encodeURIComponent(hashInBase64) + "&hnjhpt_rtime=" + time
        }
        return url;
    },

    setParams: function (params, noRedraw) {
        L.extend(this.wmtsParams, params);
        if (!noRedraw) {
            this.redraw();
        }
        return this;
    },

    getDefaultMatrix : function () {
        /**
         * the matrix3857 represents the projection
         * for in the IGN WMTS for the google coordinates.
         */
        var matrixIds3857 = new Array(22);
        for (var i= 0; i<22; i++) {
            matrixIds3857[i]= {
                identifier    : "" + i,
                topLeftCorner : new L.LatLng(20037508.3428,-20037508.3428)
            };
        }
        return matrixIds3857;
    }
});

L.tileLayer.wmts = function (url, options) {
    return new L.TileLayer.WMTS(url, options);
};