MWF.xApplication.Template = MWF.xApplication.Template || {};
MWF.xApplication.Template.utils = MWF.xApplication.Template.utils || {};

MWF.xApplication.Template.utils.ExcelUtils = new Class({
    Implements: [Options, Events],
    options:{
        'isTemplate': false,
        'headText': '',
        'headStyle': {
            font: { name: '宋体', family: 4, size: 20, bold: true },
            alignment: { vertical: 'middle', horizontal: 'center', wrapText: true }
        },
        'columnTitleStyle': {
            font: { name: '宋体', family: 4, size: 12, bold: true },
            alignment: { vertical: 'middle', horizontal: 'center', wrapText: true }
        },
        'columnContentStyle': {
            font: { name: '宋体', family: 4, size: 12, bold: false },
            alignment: { vertical: 'middle', horizontal: 'center', wrapText: true }
        }
    },
    initialize: function( options ){
        if(options)this.setOptions(options);
        this.sheet2JsonOptions = {};
        this.pollyfill();
    },
    pollyfill: function(){
        if (!FileReader.prototype.readAsBinaryString) {
            FileReader.prototype.readAsBinaryString = function (fileData) {
                var binary = "";
                var pt = this;
                var reader = new FileReader();
                reader.onload = function (e) {
                    var bytes = new Uint8Array(reader.result);
                    var length = bytes.byteLength;
                    for (var i = 0; i < length; i++) {
                        binary += String.fromCharCode(bytes[i]);
                    }
                    //pt.result  - readonly so assign binary
                    pt.content = binary;
                    pt.onload();
                };
                reader.readAsArrayBuffer(fileData);
            }
        }
    },
    _openDownloadDialog: function(url, saveName, callback){
        /**
         * 通用的打开下载对话框方法，没有测试过具体兼容性
         * @param url 下载地址，也可以是一个blob对象，必选
         * @param saveName 保存文件名，可选
         */
        if( Browser.name !== 'ie' ){
            if(typeof url == 'object' && url instanceof Blob){
                url = URL.createObjectURL(url); // 创建blob地址
            }
            var aLink = document.createElement('a');
            aLink.href = url;
            aLink.download = saveName || ''; // HTML5新增的属性，指定保存文件名，可以不要后缀，注意，file:///模式下不会生效
            var event;
            if(window.MouseEvent && typeOf( window.MouseEvent ) == "function" ) event = new MouseEvent('click');
            else
            {
                event = document.createEvent('MouseEvents');
                event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
            }
            aLink.dispatchEvent(event);
            if(callback)callback();
        }else{
            window.navigator.msSaveBlob( url, saveName);
            if(callback)callback();
        }
    },

    index2ColName : function( index ){
        if (index < 0) {
            return null;
        }
        var num = 65;// A的Unicode码
        var colName = "";
        do {
            if (colName.length > 0)index--;
            var remainder = index % 26;
            colName =  String.fromCharCode(remainder + num) + colName;
            index = (index - remainder) / 26;
        } while (index > 0);
        return colName;
    },

    upload : function ( dateColIndexArray, callback ) {
        var dateColArray = [];
        dateColIndexArray.each( function (idx) {
            dateColArray.push( this.index2ColName( idx ));
        }.bind(this))


        var uploadFileAreaNode = new Element("div");
        var html = "<input name=\"file\" type=\"file\" accept=\"csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel\" />";
        uploadFileAreaNode.set("html", html);

        var fileUploadNode = uploadFileAreaNode.getFirst();
        fileUploadNode.addEvent("change", function () {
            var files = fileNode.files;
            if (files.length) {
                var file = files.item(0);
                // if( file.name.indexOf(" ") > -1 ){
                // 	this.form.notice( MWF.xApplication.process.Xform.LP.uploadedFilesCannotHaveSpaces, "error");
                // 	return false;
                // }

                //第三个参数是日期的列
                this.importFromExcel( file, function(json){
                    //json为导入的结果
                    if(callback)callback(json);
                    uploadFileAreaNode.destroy();
                }.bind(this), dateColArray ); //["E","F"]

            }
        }.bind(this));
        var fileNode = uploadFileAreaNode.getFirst();
        fileNode.click();
    },

    _loadExportResource : function( callback ){
        if( !window.ExcelJS ){
            var uri = "../o2_lib/exceljs/babel-polyfill-6.2.js";
            var uri2 = "../o2_lib/exceljs/exceljs.min.js";
            COMMON.AjaxModule.load(uri, function(){
                COMMON.AjaxModule.load(uri2, function(){
                    callback();
                }.bind(this))
            }.bind(this))
        }else{
            callback();
        }
    },
    exportToExcel : function(array_arg, fileName_arg, colWidthArr_arg, dateIndexArray_arg, numberIndexArray_arg, callback){
        // var array = [["姓名","性别","学历","专业","出生日期","毕业日期"]];
        // array.push([ "张三","男","大学本科","计算机","2001-1-2","2019-9-2" ]);
        // array.push([ "李四","男","大学专科","数学","1998-1-2","2018-9-2" ]);
        // this.exportToExcel(array, "导出数据"+(new Date).format("db"));
        if( !MWF.xApplication.Template.LP ){
            MWF.xDesktop.requireApp("Template", "lp." + MWF.language, null, false);
        }
        this._loadExportResource(function (){
            var workbook = new ExcelJS.Workbook();
            var sheet = workbook.addWorksheet('Sheet1');
            //sheet.properties.defaultRowHeight = 25;

            var arg = {
                offsetColumnIndex: 0,
                offsetRowIndex: 0,
                sheet: sheet,
                fileName: fileName_arg,
                array: array_arg,
                colWidthArr: colWidthArr_arg,
                dateIndexArray: dateIndexArray_arg,
                numberIndexArray: numberIndexArray_arg,
                excelUtilsObject: this
            };
            this.fireEvent('beforeAppendData', [arg]);
            var offsetColumnIndex = arg.offsetColumnIndex;
            var offsetRowIndex = arg.offsetRowIndex;
            var array = arg.array;
            var colWidthArr = arg.colWidthArr;
            var dateIndexArray = arg.dateIndexArray;
            var numberIndexArray = arg.numberIndexArray;

            var titleArray = array[0];
            this.appendDataToSheet(sheet, array, colWidthArr, dateIndexArray, numberIndexArray, offsetColumnIndex, offsetRowIndex);

            var hasValidation = false;
            var ps = titleArray.map(function( title ){
                if( o2.typeOf(title) === 'object' && title.options ){
                    hasValidation = true;
                    return title.options;
                }
                return null;
            });
            if(hasValidation){
                Promise.all(ps).then(function(args){
                    for( var i=0; i<args.length; i++ ){
                        if(args[i])titleArray[i].optionsValue = args[i];
                    }
                    this.setDataValidation(workbook, sheet, titleArray, offsetColumnIndex, offsetRowIndex);
                    this.fireEvent('beforeDownload', [arg]);
                    this.downloadExcel(workbook, arg.fileName, callback);
                }.bind(this));
            }else{
                this.fireEvent('beforeDownload', [arg]);
                this.downloadExcel(workbook, arg.fileName, callback);
            }
        }.bind(this));
    },
    downloadExcel: function(workbook, fileName, callback){
        workbook.xlsx.writeBuffer().then(function(buffer){
            var blob = new Blob([buffer]);
            this._openDownloadDialog(blob, fileName + ".xlsx", callback);
        }.bind(this));
    },
    appendDataToSheet: function (sheet, array, colWidthArr, dateIndexArray, numberIndexArray, offsetColumnIndex, offsetRowIndex){
        // var titleRow = sheet.getRow(1);
        var titleArray = array.shift();

        titleArray.each( function( title, i ){
            sheet.getColumn(i+1+offsetColumnIndex).width = colWidthArr[i] ? (colWidthArr[i] / 10) : 20;
        });

        debugger;

        var startCol = this.index2ColName(offsetColumnIndex), endCol = this.index2ColName(titleArray.length-1+offsetColumnIndex);

        if( this.options.headText ){
            var headRow = sheet.getRow(1+offsetRowIndex);
            var headCell = headRow.getCell(1+offsetColumnIndex);
            headCell.value = this.options.headText;
            Object.each(this.options.headStyle || {}, function (value, key){
                headCell[key] = value;
            });
            sheet.mergeCells( startCol+(offsetRowIndex+1)+":"+ endCol+(offsetRowIndex+1));
            offsetRowIndex++;
        }

        //处理表头分类
        var titleDataParsed = [];
        var maxTitleLevel = 1;
        titleArray.each(function (title, i){
            var text = o2.typeOf(title) === 'object' ? title.text : title;
            var texts = ( text || " " ).split('\\');
            maxTitleLevel = Math.max( maxTitleLevel, texts.length );
            titleDataParsed.push( texts );
        });

        var setTitleCellStyle = function (cell){
            //cell.font = { name: '宋体', family: 4, size: 12, bold: true };
            // cell.fill = { type: 'pattern', pattern:'solid', fgColor:{argb:'FFFFFF'} };
            //cell.alignment = { vertical: 'middle', horizontal: 'center', wrapText: true };
            Object.each(this.options.columnTitleStyle || {}, function (value, key){
                cell[key] = value;
            });
        }.bind(this);

        var setDataCellStyle = function(cell, index){
            var isDate = (dateIndexArray || []).contains( index );
            var isNumber = ( numberIndexArray||[] ).contains( index );
            var style = this.options.columnContentStyle || {};
            if( isDate ){
                cell.numFmt = 'yyyy-mm-dd HH:MM:SS';
            }else if( isNumber ){
                if( style.alignment && style.alignment.wrapText ){
                    style.alignment.wrapText = false;
                }
            }else{
                cell.numFmt = '@';
            }
            Object.each(style || {}, function (value, key){
                cell[key] = value;
            });
        }.bind(this);

        for( var level=0 ;level<maxTitleLevel; level++ ){
            var titleRow = sheet.getRow(level+1+offsetRowIndex);

            var lastValue = '';
            var lastCell = null;
            var lastIndex = -1;
            var lastTitles = null;
            var lastAvailableIndex = -1;
            var startColName, starRowIndex, endColName, endRowIndex;

            titleDataParsed.each( function(titles, i){
                if( !titles[level] )return;
                lastAvailableIndex = i;
                if( lastValue !== titles[level] ){
                    var cell = titleRow.getCell(i+1+offsetColumnIndex);
                    cell.value = titles[level];
                    setTitleCellStyle(cell);

                    if(lastTitles && lastCell ){
                        //sheet.mergeCells('A2:A3');
                        startColName = this.index2ColName(lastIndex+offsetColumnIndex);
                        starRowIndex = level+1+offsetRowIndex;
                        endColName = this.index2ColName(i-1+offsetColumnIndex);
                        endRowIndex = (lastTitles[level+1] ? level+1 : maxTitleLevel)+offsetRowIndex;
                        if( (startColName !== endColName || starRowIndex !== endRowIndex) && (i===0 || titleDataParsed[i-1][level]) ){
                            sheet.mergeCells(startColName+starRowIndex+':'+endColName+endRowIndex);
                        }
                    }

                    lastValue = titles[level];
                    lastCell = cell;
                    lastIndex = i;
                    lastTitles = titles;
                }

            }.bind(this));

            debugger;

            if(lastTitles && lastCell && lastTitles[level] ){
                //sheet.mergeCells('A2:A3');
                startColName = this.index2ColName(lastIndex+offsetColumnIndex);
                starRowIndex = level+1+offsetRowIndex;
                endColName = this.index2ColName(lastAvailableIndex+offsetColumnIndex);
                endRowIndex = (lastTitles[level+1] ? level+1 : maxTitleLevel)+offsetRowIndex;
                if( startColName !== endColName || starRowIndex !== endRowIndex  ){
                    sheet.mergeCells(startColName+starRowIndex+':'+endColName+endRowIndex);
                }
            }

        }

        // titleArray.each( function( title, i ){
        //     sheet.getColumn(i+1).width = colWidthArr[i] ? (colWidthArr[i] / 10) : 20;
        //     var cell = titleRow.getCell(i+1);
        //     cell.value = o2.typeOf(title) === 'object' ? title.text : title;
        //     cell.font = { name: '宋体', family: 4, size: 12, bold: true };
        //     // cell.fill = { type: 'pattern', pattern:'solid', fgColor:{argb:'FFFFFF'} };
        //     cell.alignment = { vertical: 'middle', horizontal: 'center', wrapText: true };
        // });

        if( array.length ){
            array.each(function( contentArray, i ){
                var contentRow = sheet.getRow(i+1+maxTitleLevel+offsetRowIndex);
                contentArray.each(function( content, j ){
                    var cell = contentRow.getCell(j+1+offsetColumnIndex);
                    cell.value = content;
                    setDataCellStyle( cell, j );
                    // cell.font = { name: '宋体', family: 4, size: 12, bold: false };
                    // cell.alignment = { vertical: 'middle', horizontal: 'center', wrapText: !isNumber };
                }.bind(this));
            }.bind(this));
        }else if( this.options.isTemplate ){
            for (var rowIndex = 0; rowIndex < 3000; rowIndex++) {
                var row = sheet.getRow(rowIndex+1+maxTitleLevel+offsetRowIndex );
                titleDataParsed.each(function(titles, colIndex){
                    var cell = row.getCell(colIndex+1+offsetColumnIndex);
                    setDataCellStyle( cell, colIndex );
                }.bind(this));
            }
        }

    },
    setDataValidation: function (workbook, dataSheet, titleArray, offsetColumnIndex, offsetRowIndex){
        var validationSheet = workbook.addWorksheet('Validation');
        validationSheet.state = 'hidden'; //hidden 隐藏   veryHidden 从“隐藏/取消隐藏”对话框中隐藏工作表

        var colIndex = 0;
        titleArray.each(function(title, i){
            var optionsValue = o2.typeOf(title) === 'object' && title.optionsValue;
            if( !optionsValue )return;

            colIndex++;

            var optionsArray = o2.typeOf(optionsValue) === "array" ? optionsValue : [optionsValue];
            validationSheet.getColumn(colIndex).values = optionsArray;

            var colName = this.index2ColName(colIndex-1);

            var dataValidation = {
                type: 'list',
                allowBlank: true,
                showErrorMessage: true,
                showInputMessage: false,
                formulae: ['=Validation!$'+colName+'$1:$'+colName+'$'+optionsArray.length], // 这里引用Validation Sheet的内容 '=Validation!A1:A3'
                //formulae: ['"'+optionsArray.join(",")+'"'],
                promptTitle: MWF.xApplication.Template.LP.excelUtils.promptTitle,
                prompt: MWF.xApplication.Template.LP.excelUtils.prompt,
                errorTitle: MWF.xApplication.Template.LP.excelUtils.errorTitle,
                error: MWF.xApplication.Template.LP.excelUtils.error
            };

            var dataColName = this.index2ColName(i+offsetColumnIndex);
            for (var rowIndex = 2+offsetRowIndex; rowIndex <= 3000+offsetRowIndex; rowIndex++) {
                const cell = dataSheet.getCell(dataColName+rowIndex);
                cell.dataValidation = dataValidation;
            }
        }.bind(this));
    },
    // exportToExcel2: function(array, fileName, colWidthArr, dateIndexArray, numberIndexArray, callback){
    //     // var array = [["姓名","性别","学历","专业","出生日期","毕业日期"]];
    //     // array.push([ "张三","男","大学本科","计算机","2001-1-2","2019-9-2" ]);
    //     // array.push([ "李四","男","大学专科","数学","1998-1-2","2018-9-2" ]);
    //     // this.exportToExcel(array, "导出数据"+(new Date).format("db"));
    //     this._loadExportResource( function(){
    //         var data = window.xlsxUtils.format2Sheet(array, 0, 0, null);//偏移3行按keyMap顺序转换
    //         var wb = window.xlsxUtils.format2WB(data, "sheet1", undefined);
    //         var wopts = { bookType: 'xlsx', bookSST: false, type: 'binary' };
    //         debugger;
    //         var dataInfo = wb.Sheets[wb.SheetNames[0]];
    //
    //         var widthArray = [];
    //         array[0].each( function( v, i ){ //设置标题行样式
    //
    //             if( !colWidthArr )widthArray.push( {wpx: 100} );
    //
    //             // var at = String.fromCharCode(97 + i).toUpperCase();
    //             var at = this.index2ColName(i);
    //             var di = dataInfo[at+"1"];
    //             // di.v = v;
    //             // di.t = "s";
    //             di.s = {  //设置副标题样式
    //                 font: {
    //                     //name: '宋体',
    //                     sz: 12,
    //                     color: {rgb: "#FFFF0000"},
    //                     bold: true,
    //                     italic: false,
    //                     underline: false
    //                 },
    //                 alignment: {
    //                     horizontal: "center" ,
    //                     vertical: "center"
    //                 }
    //             };
    //         }.bind(this));
    //
    //         if( dateIndexArray && dateIndexArray.length ){
    //             dateIndexArray.each( function( value, index ){
    //                 dateIndexArray[ index ] = this.index2ColName(value);
    //             }.bind(this))
    //         }
    //
    //         if( numberIndexArray && numberIndexArray.length ){
    //             numberIndexArray.each( function( value, index ){
    //                 numberIndexArray[ index ] = this.index2ColName(value);
    //             }.bind(this))
    //         }
    //
    //         var typeFlag = ( dateIndexArray && dateIndexArray.length ) || ( numberIndexArray && numberIndexArray.length );
    //
    //         for( var key in dataInfo ){
    //             //设置所有样式，wrapText=true 后 /n会被换行
    //             if( key.substr(0, 1) !== "!" ){
    //                 var di = dataInfo[key];
    //                 if( !di.s )di.s = {};
    //                 if( !di.s.alignment )di.s.alignment = {};
    //                 di.s.alignment.wrapText = true;
    //
    //                 if( typeFlag ){
    //
    //                     var colName = key.replace(/\d+/g,''); //清除数字
    //                     var rowNum = key.replace( colName, '');
    //
    //                     if( rowNum > 1 ){
    //                         if( dateIndexArray && dateIndexArray.length && dateIndexArray.contains( colName ) ){
    //                             //di.s.numFmt = "yyyy-mm-dd HH:MM:SS"; //日期列 两种方式都可以
    //                             di.z = 'yyyy-mm-dd HH:MM:SS'; //日期列
    //                         }
    //                         if( numberIndexArray && numberIndexArray.length && numberIndexArray.contains( colName ) ){
    //                             di.s.alignment.wrapText = false;
    //                             di.t = 'n'; //数字类型
    //                         }
    //                     }
    //
    //                 }
    //             }
    //
    //         }
    //
    //         if( colWidthArr ){
    //             colWidthArr.each( function (w) {
    //                 widthArray.push( {wpx: w} );
    //             })
    //         }
    //         dataInfo['!cols'] = widthArray; //列宽度
    //
    //         this._openDownloadDialog(window.xlsxUtils.format2Blob(wb), fileName +".xlsx", callback);
    //     }.bind(this))
    // },

    _loadImportResource : function( callback ){
        if( !window.XLSX || !window.xlsxUtils ){
            var uri = "../x_component_Template/framework/xlsx/xlsx.full.js";
            var uri2 = "../x_component_Template/framework/xlsx/xlsxUtils.js";
            COMMON.AjaxModule.load(uri, function(){
                COMMON.AjaxModule.load(uri2, function(){
                    callback();
                }.bind(this))
            }.bind(this))
        }else{
            callback();
        }
    },
    importFromExcel : function( file, callback, dateColArray ){
        debugger;
        var _self = this;
        this._loadImportResource( function(){
            var reader = new FileReader();
            var workbook, data;
            reader.onload = function (e) {
                //var data = data.content;
                if (!e) {
                    data = reader.content;
                }else {
                    data = e.target.result;
                }
                workbook = window.XLSX.read(data, {
                    type:'binary',
                    cellText:false,
                    cellDates:true,
                    dateNF:'yyyy-mm-dd HH:mm:ss'
                });
                //wb.SheetNames[0]是获取Sheets中第一个Sheet的名字
                //wb.Sheets[Sheet名]获取第一个Sheet的数据
                var sheet = workbook.SheetNames[0];
                if (workbook.Sheets.hasOwnProperty(sheet)) {
                    var worksheet = workbook.Sheets[sheet];

                    if( dateColArray && typeOf(dateColArray) == "array" && dateColArray.length ){
                        var rowCount;
                        if( worksheet['!range'] ){
                            rowCount = worksheet['!range'].e.r;
                        }else{
                            var ref = worksheet['!ref'];
                            var arr = ref.split(":");
                            if(arr.length === 2){
                                rowCount = parseInt( arr[1].replace(/[^0-9]/ig,"") );
                            }
                        }
                        if( rowCount ){
                            for( var i=0; i<dateColArray.length; i++ ){
                                for( var j=1; j<=rowCount; j++ ){
                                    var cell = worksheet[ dateColArray[i]+j ];
                                    if( cell ){
                                        delete cell.w; // remove old formatted text
                                        cell.z = 'yyyy-mm-dd HH:mm:ss'; // set cell format
                                        window.XLSX.utils.format_cell(cell); // this refreshes the formatted text.
                                    }
                                }
                            }
                        }
                    }

                    var opt = _self.sheet2JsonOptions;
                    opt.raw = false;
                    opt.dateNF = 'yyyy-mm-dd HH:mm:ss'; //'yyyy-mm-dd';

                    var json = window.XLSX.utils.sheet_to_json( worksheet, opt );
                    if(callback)callback(json);
                    // break; // 如果只取第一张表，就取消注释这行
                }
            };
            reader.readAsBinaryString(file);
        })
    }
});