/**
* 使用方法：
* 1、printApi.init();
* 2、printApi.printOrder(vm.print);
* 3、printApi.close();
*/
window.printApi = (function(w, undefined){
	var devices = [];
	var device = app.getSettings('print_device') || null;
	var rate = 9600;
	var printControl = null;

	var loadPlugin = function () {
	    var _PRINT = 'PluginPrintFunction', B = window.plus.bridge;

	    this.getDevicePaths = function () {
	        return B.execSync(_PRINT, "PluginGetDevice", []);
	    }

	    //初始化信息
	    this.initMachine = function (path ,rate, successCallback) {
	        var success = typeof successCallback !== 'function' ? null : function(args){
	            successCallback(args);
	        }
	        callbackID = B.callbackId(success , null);
	        return B.exec(_PRINT, "PluginInit", [callbackID,path,rate]);
	    }

	    this.closeMachine = function () {
	        return B.execSync(_PRINT, "PluginClose", []);
	    }

	    this.printPic = function (base64 , successCallback) {
	        var success = typeof successCallback !== 'function' ? null : function(args){
	            successCallback(args);
	        }

	        callbackID = B.callbackId(success , null);
	        return B.exec(_PRINT, "PluginPrintPic", [callbackID , base64]);
	    }

	    this.printText = function (txt , successCallback) {
	        var success = typeof successCallback !== 'function' ? null : function(args){
	            successCallback(args);
	        }
	        callbackID = B.callbackId(success , null);
	        return B.exec(_PRINT, "PluginPrintText", [callbackID , txt]);
	    }

	    this.runPaper = function (row ,successCallback) {
	        var success = typeof successCallback !== 'function' ? null : function(args){
	            successCallback(args);
	        }
	        callbackID = B.callbackId(success , null);
	        return B.exec(_PRINT, "PluginRunPaper", [callbackID , row]);
	    }

	    window.plus.print = this;
	};

	var getDevicePaths = function(callback){
		if (typeof plus.print == 'undefined') {
			mui.alert('打印插件未安装，请联系客服');
			return ;
		}
		try {
			var msg = plus.print.getDevicePaths();
	        devices = JSON.parse(msg);
	        if (devices.length < 1) {
				device = null;
				return ;
			}
			var buttons = [];
			mui.each(devices, function(i, n){
				buttons.push({
					title: n
				});
			});
			plus.nativeUI.actionSheet({
				title: "请选择打印机",
				cancel: "取消",
				buttons: buttons
			}, function(b) {
				if (b.index > 0) {
					device = devices[b.index - 1];

					callback();
				}
			});
        } catch (e) {
        	devices = [];
        	device = null;
       		mui.alert('未检测到打印机设备，请确认');
        }
	};

	var init = function(){
		if (printControl === null) {
			printControl = new loadPlugin();
		}
		if (device === null) {
			getDevicePaths(init);
		}
		var result = plus.print.initMachine(device, rate, function(msg) {
            console.log("print init1: " + msg);
        });
        console.log("print init2: " + result);

        return true;
	};

	var printOrder = function(data) {
		if (device == null) {
			mui.toast('打印插件初始化失败');
			return ;
		}
		var txt = "门店:" + data.order.store_name + "\n";
	    txt = txt + '单号：' + data.order.order_sn + "\n";
	    if (data.order.user_name) {
	    	txt = txt + '会员：' + data.order.user_name + "\n";
	    }
	    if (data.order.buyer_name) {
	    	txt = txt + '收银员：' + data.order.buyer_name + "\n";
	    }
	    txt = txt + '时间：' + data.order.pay_time + "\n";
	    txt = txt + '===============================' + "\n";
	    txt = txt + '品名       单价   数量    金额' + "\n";
	    var num = 0;
	    mui.each(data.goods, function(i, n){
	    	txt = txt + n.name + '  ' + n.price +'  ' + n.number + '  ' + (n.price * n.number).toFixed(2) + "\n";
	    	num += n.number;
	    });
	    txt = txt + '===============================' + "\n";
	    txt = txt + '商品数：       ' + num + '件' + "\n";
	    txt = txt + '总金额：       ' + data.order.amount + "\n";
	    txt = txt + '实收金额：     ' + data.order.real + "\n";
	    txt = txt + '找零：         ' + data.order.balance + "\n";
	    txt = txt + '===============================' + "\n";
	    txt = txt + '温馨提示：商品如出现质量问题7日内凭此票办理退货，开具发票请在本月内办理！谢谢惠顾，欢迎下次光临！' + "\n";
	    txt = txt + '门店客服电话：'+data.order.store_phone + "\n";

	    console.log(txt);
	    try {
		    plus.print.printText(txt, function (msg) {
		        console.log("printTest:" + msg);

		        plus.print.runPaper(5, function (msg) {
		            console.log("runPaper:" + msg);
		        });

		        app.setSettings(device, 'print_device');
		    });
	    } catch (e) {
	    	app.setSettings(null, 'print_device');
	    	mui.alert('打印失败: ' + e.message);
	    }
	};

	var printPic = function(base64, callback){
		if (device == null) {
			mui.toast('打印插件初始化失败');
			return ;
		}
		var next = callback || function (msg) {
            console.log('printPic:' + msg);
        };
		return plus.print.printPic(base64, next);
	};

	var printText = function(txt, callback){
		if (device == null) {
			mui.toast('打印插件初始化失败');
			return ;
		}
		var next = callback || function (msg) {
            console.log("printText:" + msg);
        };
		return plus.print.printText(txt, next);
	};

	var runPaper = function(lines, callback){
		if (device == null) {
			mui.toast('打印插件初始化失败');
			return ;
		}
		var next = callback || function (msg) {
            console.log("runPaper:" + msg);
        };
		return plus.print.runPaper(5, next);
	};

	var close = function(){
		if (device == null) {
			//mui.toast('打印插件初始化失败');
			return ;
		}
		return window.plus.print.closeMachine();
	}

	return {
		init: init,
		printOrder: printOrder,
		printPic: printPic,
		printText: printText,
		runPaper: runPaper,
		close: close
	};
})(window);