/* eslint-disable */

require('script-loader!file-saver');

import XLSX from 'xlsx'

function generateArray(table) {

  var out = [];

  var rows = table.querySelectorAll('tr');

  var ranges = [];

  for (var R = 0; R < rows.length; ++R) {

    var outRow = [];

    var row = rows[R];

    var columns = row.querySelectorAll('td');

    for (var C = 0; C < columns.length; ++C) {

      var cell = columns[C];

      var colspan = cell.getAttribute('colspan');

      var rowspan = cell.getAttribute('rowspan');

      var cellValue = cell.innerText;

      if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;

      //Skip ranges

      ranges.forEach(function (range) {

        if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {

          for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);

        }

      });

      //Handle Row Span

      if (rowspan || colspan) {

        rowspan = rowspan || 1;

        colspan = colspan || 1;

        ranges.push({

          s: {

            r: R,

            c: outRow.length

          },

          e: {

            r: R + rowspan - 1,

            c: outRow.length + colspan - 1

          }

        });

      };

      //Handle Value

      outRow.push(cellValue !== "" ? cellValue : null);

      //Handle Colspan

      if (colspan)

        for (var k = 0; k < colspan - 1; ++k) outRow.push(null);

    }

    out.push(outRow);

  }

  return [out, ranges];

};

function datenum(v, date1904) {

  if (date1904) v += 1462;

  var epoch = Date.parse(v);

  return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);

}

function sheet_from_array_of_arrays(data, opts) {

  var ws = {};

  var range = {

    s: {

      c: 10000000,

      r: 10000000

    },

    e: {

      c: 0,

      r: 0

    }

  };

  for (var R = 0; R != data.length; ++R) {

    for (var C = 0; C != data[R].length; ++C) {

      if (range.s.r > R) range.s.r = R;

      if (range.s.c > C) range.s.c = C;

      if (range.e.r < R) range.e.r = R;

      if (range.e.c < C) range.e.c = C;

      var cell = {

        v: data[R][C]

      };

      if (cell.v == null) continue;

      var cell_ref = XLSX.utils.encode_cell({

        c: C,

        r: R

      });

      if (typeof cell.v === 'number') cell.t = 'n';

      else if (typeof cell.v === 'boolean') cell.t = 'b';

      else if (cell.v instanceof Date) {

        cell.t = 'n';

        cell.z = XLSX.SSF._table[14];

        cell.v = datenum(cell.v);

      } else cell.t = 's';

      ws[cell_ref] = cell;

    }

  }

  if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);

  return ws;

}

function Workbook() {

  if (!(this instanceof Workbook)) return new Workbook();

  this.SheetNames = [];

  this.Sheets = {};

}

function s2ab(s) {

  var buf = new ArrayBuffer(s.length);

  var view = new Uint8Array(buf);

  for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;

  return buf;

}

export function export_table_to_excel(id) {

  var theTable = document.getElementById(id);

  var oo = generateArray(theTable);

  var ranges = oo[1];

  /* original data */

  var data = oo[0];

  var ws_name = "SheetJS";

  var wb = new Workbook(),

    ws = sheet_from_array_of_arrays(data);

  /* add ranges to worksheet */

  // ws['!cols'] = ['apple', 'banan'];

  ws['!merges'] = ranges;

  /* add worksheet to workbook */

  wb.SheetNames.push(ws_name);

  wb.Sheets[ws_name] = ws;

  var wbout = XLSX.write(wb, {

    bookType: 'xlsx',

    bookSST: false,

    type: 'binary'

  });

  saveAs(new Blob([s2ab(wbout)], {

    type: "application/octet-stream"

  }), "test.xlsx")

}

export function export_json_to_excel({

                                       header,

                                       data,

                                       filename,

                                       autoWidth = true,

                                       bookType=  'xlsx'

                                     } = {}) {

  /* original data */

  filename = filename || 'excel-list'

  data = [...data]

  data.unshift(header);

  var ws_name = "SheetJS";

  var wb = new Workbook(),

    ws = sheet_from_array_of_arrays(data);

  if (autoWidth) {

    /*设置worksheet每列的最大宽度*/

    const colWidth = data.map(row => row.map(val => {

      /*先判断是否为null/undefined*/

      if (val == null) {

        return {

          'wch': 10

        };

      }

      /*再判断是否为中文*/

      else if (val.toString().charCodeAt(0) > 255) {

        return {

          'wch': val.toString().length * 2

        };

      } else {

        return {

          'wch': val.toString().length

        };

      }

    }))

    /*以第一行为初始值*/

    let result = colWidth[0];

    for (let i = 1; i < colWidth.length; i++) {

      for (let j = 0; j < colWidth[i].length; j++) {

        if (result[j]['wch'] < colWidth[i][j]['wch']) {

          result[j]['wch'] = colWidth[i][j]['wch'];

        }

      }

    }

    ws['!cols'] = result;

  }

  /* add worksheet to workbook */

  wb.SheetNames.push(ws_name);

  wb.Sheets[ws_name] = ws;

  var wbout = XLSX.write(wb, {

    bookType: bookType,

    bookSST: false,

    type: 'binary'

  });

  saveAs(new Blob([s2ab(wbout)], {

    type: "application/octet-stream"

  }), `${filename}.${bookType}`);

}

onClickBtnExportX(datas){

         let that = this;

         if (!datas|| datas.length<=0) {

           that.$message('请先选择要导出的数据！')

           return

         }

         import('@/vendor/Export2Excel').then(excel => {

           const tHeader = ['进口报关单号','报关单号', '报关编号','类型名称',  '车队系统名称', '车身编号'

             , '发动机号码','后备发动机号码','数量','报关日期', '运输公司', '单据日期', '货品类型编号','经办人','审核状态','运输方式'];

           const filterVal = ['customsOrderNum','customsOrderNum', 'customsClearCode', 'type', 'fleetSystemName', 'carBodyNum','engineNum'

             , 'backupEngineNum', 'account', 'customsClearDate', 'tranCompany'

             , 'listDate', 'typeCode', 'manager', 'orderStatus', 'transMode'];

           const fileName =  parseTime(new Date(),'{y}-{m}-{d}')+"_" + datas[0].customsOrderNum;

           const data = this.formatJson(filterVal, datas)

           excel.export_json_to_excel({

             header: tHeader,

             data,

             filename: fileName

           })

         })

       },

       formatJson(filterVal, jsonData) {

         return jsonData.map(v => filterVal.map(j => {

           if (j === 'customsClearDate'|| j === 'listDate') {

             return parseTime(v[j])

           }else if(j === 'orderStatus'){

             debugger

             if (v[j]===true) {

               v[j]="审批通过";

             }else if(v[j]===false){

               v[j]="审批不通过";

             }else {

               v[j]="未审批";

             }

             return v[j]

           } else {

             return v[j]

           }

         }))

       },