text: import $ from '../../core/renderer';
  import { extend } from '../../core/utils/extend';
  import { foreachTree, formatValue, createPath } from './ui.pivot_grid.utils';
  import { each } from '../../core/utils/iterator';
  var FORMAT_DICTIONARY = {
    number: 'numeric',
    date: 'datetime'
  };
  var UNBIND_KEY = 'dxPivotGridUnbinding';
  
  function getFormattedValue(path, fields) {
    var value = [];
    var lastFieldIndex = fields.length - 1;
    each(path, function (i, item) {
      value.push(item.text || formatValue(item.value, fields[lastFieldIndex - i]));
    });
    return value.reverse();
  }
  
  function getExpandedLevel(node) {
    var level = 0;
    foreachTree(node, function (members) {
      level = Math.max(level, members.length - 1);
    });
    return level;
  }
  
  function processDataCell(processCellArgs, processCell) {
    var chartDataItem = processCellArgs.chartDataItem;
    var processedCell = processCell && processCell(processCellArgs);
  
    if (processedCell) {
      chartDataItem = extend({}, chartDataItem, processedCell.chartDataItem);
      processedCell = extend({}, processCellArgs, processedCell, {
        chartDataItem: chartDataItem
      });
      return processedCell;
    }
  
    return processCellArgs;
  }
  
  function createChartDataSource(pivotGridDataSource, mapOptions, axisDictionary) {
    var data = pivotGridDataSource.getData();
    var dataSource = [];
    var dataFields = pivotGridDataSource.getAreaFields('data');
    var rowFields = pivotGridDataSource.getAreaFields('row');
    var columnFields = pivotGridDataSource.getAreaFields('column');
    var columnElements = [{
      index: data.grandTotalColumnIndex,
      children: data.columns
    }];
    var rowElements = [{
      index: data.grandTotalRowIndex,
      children: data.rows
    }];
    var rowLevel = getExpandedLevel(rowElements);
    var columnLevel = getExpandedLevel(columnElements);
    var measureIndex;
    var dataField;
    var rowMemberIndex;
    var rowVisibility;
    var rowPathFormatted;
    var rowPath;
    var columnMemberIndex;
    var columnVisibility;
    var columnPath;
    var columnPathFormatted;
  
    function createDataItem() {
      var dataCell = (data.values[rowMemberIndex] || [])[columnMemberIndex] || [];
      var value = dataCell[measureIndex];
      var axis;
      var processCellArgs = {
        rowPath: rowPath,
        maxRowLevel: rowLevel,
        rowPathFormatted: rowPathFormatted,
        rowFields: rowFields,
        columnPathFormatted: columnPathFormatted,
        maxColumnLevel: columnLevel,
        columnPath: columnPath,
        columnFields: columnFields,
        dataFields: dataFields,
        dataIndex: measureIndex,
        dataValues: dataCell,
        visible: columnVisibility && rowVisibility
      };
      var seriesName = (mapOptions.inverted ? columnPathFormatted : rowPathFormatted).join(' - ');
      var argument = (mapOptions.inverted ? rowPathFormatted : columnPathFormatted).join('/');
  
      if (dataFields.length > 1) {
        if (mapOptions.putDataFieldsInto === 'args' || mapOptions.putDataFieldsInto === 'both') {
          argument += ' | ' + dataField.caption;
        }
  
        if (mapOptions.putDataFieldsInto !== 'args') {
          seriesName += ' | ' + dataField.caption;
  
          if (mapOptions.dataFieldsDisplayMode !== 'singleAxis') {
            axis = dataField.caption;
          }
        }
      }
  
      processCellArgs.chartDataItem = {
        val: value === undefined ? null : value,
        series: seriesName,
        arg: argument
      };
      processCellArgs = processDataCell(processCellArgs, mapOptions.processCell);
  
      if (processCellArgs.visible) {
        axisDictionary[processCellArgs.chartDataItem.series] = axisDictionary[processCellArgs.chartDataItem.series] || axis;
        dataSource.push(processCellArgs.chartDataItem);
      }
    }
  
    function foreachRowColumn(callBack) {
      foreachTree(rowElements, function (rowMembers) {
        rowMemberIndex = rowMembers[0].index;
        rowMembers = rowMembers.slice(0, rowMembers.length - 1);
        rowVisibility = rowLevel === rowMembers.length;
        rowPath = createPath(rowMembers);
        rowPathFormatted = getFormattedValue(rowMembers, rowFields);
  
        if (rowPath.length === 0) {
          rowPathFormatted = [mapOptions.grandTotalText];
        }
  
        foreachTree(columnElements, function (columnMembers) {
          columnMemberIndex = columnMembers[0].index;
          columnMembers = columnMembers.slice(0, columnMembers.length - 1);
          columnVisibility = columnLevel === columnMembers.length;
          columnPath = createPath(columnMembers);
          columnPathFormatted = getFormattedValue(columnMembers, columnFields);
  
          if (columnPath.length === 0) {
            columnPathFormatted = [mapOptions.grandTotalText];
          }
  
          callBack();
        });
      });
    }
  
    function foreachDataField(callback) {
      each(dataFields, function (index, field) {
        dataField = field;
        measureIndex = index;
        callback();
      });
    }
  
    if (mapOptions.alternateDataFields === false) {
      foreachDataField(function () {
        foreachRowColumn(createDataItem);
      });
    } else {
      foreachRowColumn(function () {
        foreachDataField(createDataItem);
      });
    }
  
    return dataSource;
  }
  
  function createValueAxisOptions(dataSource, options) {
    var dataFields = dataSource.getAreaFields('data');
  
    if (options.putDataFieldsInto !== 'args' && options.dataFieldsDisplayMode !== 'singleAxis' || dataFields.length === 1) {
      var valueAxisSettings = [];
      each(dataFields, function (_, dataField) {
        var valueAxisOptions = {
          name: dataField.caption,
          title: dataField.caption,
          valueType: FORMAT_DICTIONARY[dataField.dataType] || dataField.dataType,
          label: {
            format: dataField.format
          }
        };
  
        if (dataField.customizeText) {
          valueAxisOptions.label.customizeText = function (formatObject) {
            return dataField.customizeText.call(dataField, formatObject);
          };
        }
  
        if (options.dataFieldsDisplayMode === 'splitPanes') {
          valueAxisOptions.pane = dataField.caption;
        }
  
        valueAxisSettings.push(valueAxisOptions);
      });
      return valueAxisSettings;
    }
  
    return [{}];
  }
  
  function createPanesOptions(dataSource, options) {
    var panes = [];
    var dataFields = dataSource.getAreaFields('data');
  
    if (dataFields.length > 1 && options.dataFieldsDisplayMode === 'splitPanes' && options.putDataFieldsInto !== 'args') {
      each(dataFields, function (_, dataField) {
        panes.push({
          name: dataField.caption
        });
      });
    }
  
    if (!panes.length) {
      panes.push({});
    }
  
    return panes;
  }
  
  function createChartOptions(dataSource, options) {
    var _customizeSeries = options.customizeSeries;
    var customizeChart = options.customizeChart;
    var chartOptions = {
      valueAxis: createValueAxisOptions(dataSource, options),
      panes: createPanesOptions(dataSource, options)
    };
    var axisDictionary = {};
  
    if (customizeChart) {
      chartOptions = extend(true, {}, chartOptions, customizeChart(chartOptions));
    }
  
    chartOptions.dataSource = createChartDataSource(dataSource, options, axisDictionary);
    chartOptions.seriesTemplate = {
      nameField: 'series',
      customizeSeries: function customizeSeries(seriesName) {
        var seriesOptions = {};
  
        if (options.dataFieldsDisplayMode === 'splitPanes') {
          seriesOptions.pane = axisDictionary[seriesName];
        } else if (options.dataFieldsDisplayMode !== 'singleAxis') {
          seriesOptions.axis = axisDictionary[seriesName];
        }
  
        if (_customizeSeries) {
          seriesOptions = extend(seriesOptions, _customizeSeries(seriesName, seriesOptions));
        }
  
        return seriesOptions;
      }
    };
    return chartOptions;
  }
  
  function getChartInstance(chartElement) {
    if (!chartElement) {
      return false;
    }
  
    if (chartElement.NAME) {
      return chartElement.NAME === 'dxChart' && chartElement;
    }
  
    var element = $(chartElement);
    return element.data('dxChart') && element.dxChart('instance');
  }
  
  function removeBinding(chart) {
    var unbind = chart.$element().data(UNBIND_KEY);
    unbind && unbind();
  }
  
  export default {
    bindChart: function bindChart(chart, integrationOptions) {
      integrationOptions = extend({}, integrationOptions);
      var that = this;
  
      var updateChart = function updateChart() {
        integrationOptions.grandTotalText = that.option('texts.grandTotal');
        var chartOptions = createChartOptions(that.getDataSource(), integrationOptions);
        chart.option(chartOptions);
      };
  
      chart = getChartInstance(chart);
  
      if (!chart) {
        return null;
      }
  
      removeBinding(chart);
      that.on('changed', updateChart);
      updateChart();
  
      var disposeBinding = function disposeBinding() {
        chart.$element().removeData(UNBIND_KEY);
        that.off('changed', updateChart);
      };
  
      chart.on('disposing', disposeBinding);
      this.on('disposing', disposeBinding);
      chart.$element().data(UNBIND_KEY, disposeBinding);
      return disposeBinding;
    }
  };