var PdfReader = function(options) {
	this.version = "4.1.0.0";
	this.domain = window.location.host;
	this.pdf = null;
	this.plugin = true;
	this._pageNum = options.pageNum;
	this._totalPageNum = options.totalPageNum;
	this._readLink = options.readLink;
	this._pageWidth = typeof (options.pageWidth) != "undefined" ? options.pageWidth
			: null;
	this._pageHeight = typeof (options.pageHeight) != "undefined" ? options.pageHeight
			: null;
	this._sessionId = typeof (options.sessionId) != "undefined" ? options.sessionId
			: null;
	this._rcUrl = "/pages/screen/web/readers/js/pdf/SC_TC_JP_KR.CAB";
	this._patchPath = "/pages/screen/web/readers/js/pdf/PDFView.zip";
	this.setOptions(typeof (options.toolbar) != "undefined" ? options.toolbar
			: {});
};
PdfReader.prototype = {
	setOptions : function(toolbar) {
		this.toolbar = {
			viewType : typeof (toolbar.viewType) != "undefined" ? toolbar.viewType
					: 2, // 2:单页，5:双页
			fitType : typeof (toolbar.fitType) != "undefined" ? toolbar.fitType
					: "width", // width:适宽，height:适高
			pageTurning : typeof (toolbar.pageTurning) != "undefined" ? toolbar.pageTurning
					: 2, // 2:上下滚动，3:左右滑动
			readPattern : typeof (toolbar.readPattern) != "undefined" ? toolbar.readPattern
					: 0, // 0:阅读，1:选择，2:截图
			openZoom : typeof (toolbar.openZoom) != "undefined" ? toolbar.openZoom
					: true, // true:打开，false:关闭
			openRotate : typeof (toolbar.openRotate) != "undefined" ? toolbar.openRotate
					: true, // true:打开，false:关闭
			openNote : typeof (toolbar.openNote) != "undefined" ? toolbar.openNote
					: true, // true:打开，false:关闭
			uploadLink : typeof (toolbar.uploadLink) != "undefined" ? toolbar.uploadLink
					: null
		// 注释上传附件地址
		};
	},
	initPdfReader : function() {
		this.plugin = checkPlugin();

		if (!this.plugin) {
			this.buildInPdf();
		} else {
			this.ycanPdf();
			this.ycanConfig();
		}
	},
	checkVersion : function(curVersion, newVersion) {
		var newVer = newVersion.split('.');
		var curVer = curVersion.split('.');
		if (parseInt(newVer[0]) > parseInt(curVer[0])) {
			return true;
		}
		if (parseInt(newVer[0]) == parseInt(curVer[0])
				&& parseInt(newVer[1]) > parseInt(curVer[1])) {
			return true;
		}
		if (parseInt(newVer[0]) == parseInt(curVer[0])
				&& parseInt(newVer[1]) == parseInt(curVer[1])
				&& parseInt(newVer[2]) > parseInt(curVer[2])) {
			return true;
		}
		if (parseInt(newVer[0]) == parseInt(curVer[0])
				&& parseInt(newVer[1]) == parseInt(curVer[1])
				&& parseInt(newVer[2]) == parseInt(curVer[2])
				&& parseInt(newVer[3]) > parseInt(curVer[3])) {
			return true;
		}
		return false;
	},
	buildInPdf : function() {
		var str = "<div id=\"container\">";
		str += "<div class=\"lightbox\"></div>";
		str += "<div id=\"pop\" class=\"pop\">";
		str += "<canvas id=\"the-canvas\"></canvas>";
		str += "</div>";
		str += "</div>";
		$("#pdfContentLoader").html(str);
		PDFJS.workerSrc = '/pages/screen/web/readers/js/pdf/pdf.worker.min.js';
		//var h = $(window).height() - 155;
		//$("#pdfContentLoader").height(h);

		var link = "http://" + this.domain + this._readLink + "&pageNum=" + this._pageNum;
		PDFJS.getDocument(link).then(function getPdfPage(pdf) {
		 pdf.getPage(1).then(function getPdfPage(page) {
		     var scale = 1;
		     var viewport = page.getViewport(scale);
		     scale = $("#pdfContentLoader").width()/viewport.width;
		     viewport = page.getViewport(scale);
		     var canvas = document.getElementById('the-canvas');
		     var context = canvas.getContext('2d');
		     canvas.height = viewport.height;
		     canvas.width = viewport.width;
		     var renderContext = {
		         canvasContext: context,
		         viewport: viewport
		     };
		     page.render(renderContext);
			 $("#controlContainer").css("overflow","scroll");
			 $("#controlContainer").scrollTop(0);
		 });
		});
		/*
		var agent = navigator.userAgent.toLowerCase();
		var html = "<iframe id='pdfDisplayFrame' src='http://" + this.domain
				+ this._readLink;
		html += "&pageNum=" + this._pageNum + "' ";
		if (agent.indexOf("pad") > 0 || agent.indexOf("mobile") > 0) {
			html += "width='" + this._width + "' height='";
			html += this._pageHeight / this._pageWidth * 935 + "' ";
		} else {
			html += "width='100%' attrHeight='" + this._pageHeight + "' ";
			html += "attrWidth='" + this._pageWidth + "' ";
			var h = $(window).height() - 150;
			if(!this.plugin) h += 42;
			html += "height='" + h + "'";
		}
		html += '></iframe>';
		$("#pdfContentLoader").html(html);
		*/
	},
	ycanPdf : function() {
		var tips = null;
		if (window.ActiveXObject || 'ActiveXObject' in window) {
			try {
				var obj = new ActiveXObject('PDFVIEWYC.PDFViewCtrl.1');
				this.pdf = document.getElementById('YCanPDFIE');
			} catch (e) {
				tips = '您尚未安装PDF控件，点这里进行安装...';
			}
		} else { // 非IE
			var obj = navigator.plugins['npPDFViewyc dll'];
			if (obj == undefined) {
				tips = '您尚未安装PDF控件，点这里进行安装...';
			} else {
				this.pdf = document.getElementById('YCanPDFNOTIE');
			}
		}
		if (tips == null) {
			var curVersion = this.pdf.GetVersion();
			//if (!this.checkVersion(curVersion, this.version))
				//return;
//			if (this.checkVersion(curVersion, this.version)) {
//				tips = '发现新版本阅读控件，点这里进行更新安装...';
//			} else { // 用户当前使用版本大于等于新版最低版本，按照新版本方式更新
//				var curVer = this.pdf.GetVersionUpdate(this.version, "http://"
//						+ this.domain + this._patchPath, 0);
//				if (curVer == "程序默认升级失败") {
//					tips = '程序默认升级失败,请关闭正在使用的页面，手动升级程序!';
//				}
//			}
		}

		if (tips != null) {
			$("#controlContainer")
					.html(
							'<a href="http://'
									+ this.domain
									+ '/pages/screen/web/readers/js/pdf/caPDFPluginInst.exe" class="install">'
									+ tips + '</a>');
			if (this.pdf != null) {
				this.pdf.CloseFile();
				this.pdf = null;
			}
		}
	},
	ycanConfig : function() {
		this.pdf.HttpSetVualue("JSESSIONID", this._sessionId, 0);
		this.pdf.SetRCURL("http://" + this.domain + this._rcUrl, 0);

		this.pdf.BeginBook();
		for (var i = 1; i < this._totalPageNum; i++) {
			this.pdf.AddPage("http://" + this.domain + this._readLink
					+ "&pageNum=" + i);
		}
		this.pdf.EndBook();
		this.pdf.PageIndex = this._pageNum;

		if (this.toolbar.openNote && this.toolbar.uploadLink != null) {
			this.pdf.SetUpLoadPath("http://" + this.domain + this.toolbar.uploadLink, 5*1024*1024, 0);
		}

		this.pdf.SetViewType(this.toolbar.viewType);
		if (!"width" == this.toolbar.fitType) {
			this.pdf.FitHeight();
		} else {
			this.pdf.FitWidth();
		}
	},
	getNoteRegionsSingle : function (commentIndex) {
		return this.pdf.getNoteRegions(commentIndex,"");
	}
};
var checkPlugin = function() {
	var agent = navigator.userAgent.toLowerCase();
	if (agent.indexOf("edge") > 0 || agent.indexOf("mobile") > 0
			|| agent.indexOf("pad") > 0 || agent.indexOf("mac") > 0) {
		return false;
	} else if (agent.indexOf("chrome") > 0) {
		if (agent.indexOf("linux") > 0) {
			return false;
		} else {
			var regStr_chrome = /chrome\/[\d.]+/gi;
			var v = (agent.match(regStr_chrome) + "").replace(/[^0-9.]/ig,
					"");
			if (Number(v.substring(0, v.indexOf("."))) > 42) {
				return false;
			}
		}
	}
	return true;
};