/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

var echarts = require("../../../echarts");

var zrUtil = require("zrender/lib/core/util");

var eventTool = require("zrender/lib/core/event");

var lang = require("../../../lang");

var featureManager = require("../featureManager");

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var dataViewLang = lang.toolbox.dataView;
var BLOCK_SPLITER = new Array(60).join('-');
var ITEM_SPLITER = '\t';
/**
 * Group series into two types
 *  1. on category axis, like line, bar
 *  2. others, like scatter, pie
 * @param {module:echarts/model/Global} ecModel
 * @return {Object}
 * @inner
 */

function groupSeries(ecModel) {
  var seriesGroupByCategoryAxis = {};
  var otherSeries = [];
  var meta = [];
  ecModel.eachRawSeries(function (seriesModel) {
    var coordSys = seriesModel.coordinateSystem;

    if (coordSys && (coordSys.type === 'cartesian2d' || coordSys.type === 'polar')) {
      var baseAxis = coordSys.getBaseAxis();

      if (baseAxis.type === 'category') {
        var key = baseAxis.dim + '_' + baseAxis.index;

        if (!seriesGroupByCategoryAxis[key]) {
          seriesGroupByCategoryAxis[key] = {
            categoryAxis: baseAxis,
            valueAxis: coordSys.getOtherAxis(baseAxis),
            series: []
          };
          meta.push({
            axisDim: baseAxis.dim,
            axisIndex: baseAxis.index
          });
        }

        seriesGroupByCategoryAxis[key].series.push(seriesModel);
      } else {
        otherSeries.push(seriesModel);
      }
    } else {
      otherSeries.push(seriesModel);
    }
  });
  return {
    seriesGroupByCategoryAxis: seriesGroupByCategoryAxis,
    other: otherSeries,
    meta: meta
  };
}
/**
 * Assemble content of series on cateogory axis
 * @param {Array.<module:echarts/model/Series>} series
 * @return {string}
 * @inner
 */


function assembleSeriesWithCategoryAxis(series) {
  var tables = [];
  zrUtil.each(series, function (group, key) {
    var categoryAxis = group.categoryAxis;
    var valueAxis = group.valueAxis;
    var valueAxisDim = valueAxis.dim;
    var headers = [' '].concat(zrUtil.map(group.series, function (series) {
      return series.name;
    }));
    var columns = [categoryAxis.model.getCategories()];
    zrUtil.each(group.series, function (series) {
      columns.push(series.getRawData().mapArray(valueAxisDim, function (val) {
        return val;
      }));
    }); // Assemble table content

    var lines = [headers.join(ITEM_SPLITER)];

    for (var i = 0; i < columns[0].length; i++) {
      var items = [];

      for (var j = 0; j < columns.length; j++) {
        items.push(columns[j][i]);
      }

      lines.push(items.join(ITEM_SPLITER));
    }

    tables.push(lines.join('\n'));
  });
  return tables.join('\n\n' + BLOCK_SPLITER + '\n\n');
}
/**
 * Assemble content of other series
 * @param {Array.<module:echarts/model/Series>} series
 * @return {string}
 * @inner
 */


function assembleOtherSeries(series) {
  return zrUtil.map(series, function (series) {
    var data = series.getRawData();
    var lines = [series.name];
    var vals = [];
    data.each(data.dimensions, function () {
      var argLen = arguments.length;
      var dataIndex = arguments[argLen - 1];
      var name = data.getName(dataIndex);

      for (var i = 0; i < argLen - 1; i++) {
        vals[i] = arguments[i];
      }

      lines.push((name ? name + ITEM_SPLITER : '') + vals.join(ITEM_SPLITER));
    });
    return lines.join('\n');
  }).join('\n\n' + BLOCK_SPLITER + '\n\n');
}
/**
 * @param {module:echarts/model/Global}
 * @return {Object}
 * @inner
 */


function getContentFromModel(ecModel) {
  var result = groupSeries(ecModel);
  return {
    value: zrUtil.filter([assembleSeriesWithCategoryAxis(result.seriesGroupByCategoryAxis), assembleOtherSeries(result.other)], function (str) {
      return str.replace(/[\n\t\s]/g, '');
    }).join('\n\n' + BLOCK_SPLITER + '\n\n'),
    meta: result.meta
  };
}

function trim(str) {
  return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}
/**
 * If a block is tsv format
 */


function isTSVFormat(block) {
  // Simple method to find out if a block is tsv format
  var firstLine = block.slice(0, block.indexOf('\n'));

  if (firstLine.indexOf(ITEM_SPLITER) >= 0) {
    return true;
  }
}

var itemSplitRegex = new RegExp('[' + ITEM_SPLITER + ']+', 'g');
/**
 * @param {string} tsv
 * @return {Object}
 */

function parseTSVContents(tsv) {
  var tsvLines = tsv.split(/\n+/g);
  var headers = trim(tsvLines.shift()).split(itemSplitRegex);
  var categories = [];
  var series = zrUtil.map(headers, function (header) {
    return {
      name: header,
      data: []
    };
  });

  for (var i = 0; i < tsvLines.length; i++) {
    var items = trim(tsvLines[i]).split(itemSplitRegex);
    categories.push(items.shift());

    for (var j = 0; j < items.length; j++) {
      series[j] && (series[j].data[i] = items[j]);
    }
  }

  return {
    series: series,
    categories: categories
  };
}
/**
 * @param {string} str
 * @return {Array.<Object>}
 * @inner
 */


function parseListContents(str) {
  var lines = str.split(/\n+/g);
  var seriesName = trim(lines.shift());
  var data = [];

  for (var i = 0; i < lines.length; i++) {
    var items = trim(lines[i]).split(itemSplitRegex);
    var name = '';
    var value;
    var hasName = false;

    if (isNaN(items[0])) {
      // First item is name
      hasName = true;
      name = items[0];
      items = items.slice(1);
      data[i] = {
        name: name,
        value: []
      };
      value = data[i].value;
    } else {
      value = data[i] = [];
    }

    for (var j = 0; j < items.length; j++) {
      value.push(+items[j]);
    }

    if (value.length === 1) {
      hasName ? data[i].value = value[0] : data[i] = value[0];
    }
  }

  return {
    name: seriesName,
    data: data
  };
}
/**
 * @param {string} str
 * @param {Array.<Object>} blockMetaList
 * @return {Object}
 * @inner
 */


function parseContents(str, blockMetaList) {
  var blocks = str.split(new RegExp('\n*' + BLOCK_SPLITER + '\n*', 'g'));
  var newOption = {
    series: []
  };
  zrUtil.each(blocks, function (block, idx) {
    if (isTSVFormat(block)) {
      var result = parseTSVContents(block);
      var blockMeta = blockMetaList[idx];
      var axisKey = blockMeta.axisDim + 'Axis';

      if (blockMeta) {
        newOption[axisKey] = newOption[axisKey] || [];
        newOption[axisKey][blockMeta.axisIndex] = {
          data: result.categories
        };
        newOption.series = newOption.series.concat(result.series);
      }
    } else {
      var result = parseListContents(block);
      newOption.series.push(result);
    }
  });
  return newOption;
}
/**
 * @alias {module:echarts/component/toolbox/feature/DataView}
 * @constructor
 * @param {module:echarts/model/Model} model
 */


function DataView(model) {
  this._dom = null;
  this.model = model;
}

DataView.defaultOption = {
  show: true,
  readOnly: false,
  optionToContent: null,
  contentToOption: null,
  icon: 'M17.5,17.3H33 M17.5,17.3H33 M45.4,29.5h-28 M11.5,2v56H51V14.8L38.4,2H11.5z M38.4,2.2v12.7H51 M45.4,41.7h-28',
  title: zrUtil.clone(dataViewLang.title),
  lang: zrUtil.clone(dataViewLang.lang),
  backgroundColor: '#fff',
  textColor: '#000',
  textareaColor: '#fff',
  textareaBorderColor: '#333',
  buttonColor: '#c23531',
  buttonTextColor: '#fff'
};

DataView.prototype.onclick = function (ecModel, api) {
  var container = api.getDom();
  var model = this.model;

  if (this._dom) {
    container.removeChild(this._dom);
  }

  var root = document.createElement('div');
  root.style.cssText = 'position:absolute;left:5px;top:5px;bottom:5px;right:5px;';
  root.style.backgroundColor = model.get('backgroundColor') || '#fff'; // Create elements

  var header = document.createElement('h4');
  var lang = model.get('lang') || [];
  header.innerHTML = lang[0] || model.get('title');
  header.style.cssText = 'margin: 10px 20px;';
  header.style.color = model.get('textColor');
  var viewMain = document.createElement('div');
  var textarea = document.createElement('textarea');
  viewMain.style.cssText = 'display:block;width:100%;overflow:auto;';
  var optionToContent = model.get('optionToContent');
  var contentToOption = model.get('contentToOption');
  var result = getContentFromModel(ecModel);

  if (typeof optionToContent === 'function') {
    var htmlOrDom = optionToContent(api.getOption());

    if (typeof htmlOrDom === 'string') {
      viewMain.innerHTML = htmlOrDom;
    } else if (zrUtil.isDom(htmlOrDom)) {
      viewMain.appendChild(htmlOrDom);
    }
  } else {
    // Use default textarea
    viewMain.appendChild(textarea);
    textarea.readOnly = model.get('readOnly');
    textarea.style.cssText = 'width:100%;height:100%;font-family:monospace;font-size:14px;line-height:1.6rem;';
    textarea.style.color = model.get('textColor');
    textarea.style.borderColor = model.get('textareaBorderColor');
    textarea.style.backgroundColor = model.get('textareaColor');
    textarea.value = result.value;
  }

  var blockMetaList = result.meta;
  var buttonContainer = document.createElement('div');
  buttonContainer.style.cssText = 'position:absolute;bottom:0;left:0;right:0;';
  var buttonStyle = 'float:right;margin-right:20px;border:none;' + 'cursor:pointer;padding:2px 5px;font-size:12px;border-radius:3px';
  var closeButton = document.createElement('div');
  var refreshButton = document.createElement('div');
  buttonStyle += ';background-color:' + model.get('buttonColor');
  buttonStyle += ';color:' + model.get('buttonTextColor');
  var self = this;

  function close() {
    container.removeChild(root);
    self._dom = null;
  }

  eventTool.addEventListener(closeButton, 'click', close);
  eventTool.addEventListener(refreshButton, 'click', function () {
    var newOption;

    try {
      if (typeof contentToOption === 'function') {
        newOption = contentToOption(viewMain, api.getOption());
      } else {
        newOption = parseContents(textarea.value, blockMetaList);
      }
    } catch (e) {
      close();
      throw new Error('Data view format error ' + e);
    }

    if (newOption) {
      api.dispatchAction({
        type: 'changeDataView',
        newOption: newOption
      });
    }

    close();
  });
  closeButton.innerHTML = lang[1];
  refreshButton.innerHTML = lang[2];
  refreshButton.style.cssText = buttonStyle;
  closeButton.style.cssText = buttonStyle;
  !model.get('readOnly') && buttonContainer.appendChild(refreshButton);
  buttonContainer.appendChild(closeButton); // http://stackoverflow.com/questions/6637341/use-tab-to-indent-in-textarea

  eventTool.addEventListener(textarea, 'keydown', function (e) {
    if ((e.keyCode || e.which) === 9) {
      // get caret position/selection
      var val = this.value;
      var start = this.selectionStart;
      var end = this.selectionEnd; // set textarea value to: text before caret + tab + text after caret

      this.value = val.substring(0, start) + ITEM_SPLITER + val.substring(end); // put caret at right position again

      this.selectionStart = this.selectionEnd = start + 1; // prevent the focus lose

      eventTool.stop(e);
    }
  });
  root.appendChild(header);
  root.appendChild(viewMain);
  root.appendChild(buttonContainer);
  viewMain.style.height = container.clientHeight - 80 + 'px';
  container.appendChild(root);
  this._dom = root;
};

DataView.prototype.remove = function (ecModel, api) {
  this._dom && api.getDom().removeChild(this._dom);
};

DataView.prototype.dispose = function (ecModel, api) {
  this.remove(ecModel, api);
};
/**
 * @inner
 */


function tryMergeDataOption(newData, originalData) {
  return zrUtil.map(newData, function (newVal, idx) {
    var original = originalData && originalData[idx];

    if (zrUtil.isObject(original) && !zrUtil.isArray(original)) {
      if (zrUtil.isObject(newVal) && !zrUtil.isArray(newVal)) {
        newVal = newVal.value;
      } // Original data has option


      return zrUtil.defaults({
        value: newVal
      }, original);
    } else {
      return newVal;
    }
  });
}

featureManager.register('dataView', DataView);
echarts.registerAction({
  type: 'changeDataView',
  event: 'dataViewChanged',
  update: 'prepareAndUpdate'
}, function (payload, ecModel) {
  var newSeriesOptList = [];
  zrUtil.each(payload.newOption.series, function (seriesOpt) {
    var seriesModel = ecModel.getSeriesByName(seriesOpt.name)[0];

    if (!seriesModel) {
      // New created series
      // Geuss the series type
      newSeriesOptList.push(zrUtil.extend({
        // Default is scatter
        type: 'scatter'
      }, seriesOpt));
    } else {
      var originalData = seriesModel.get('data');
      newSeriesOptList.push({
        name: seriesOpt.name,
        data: tryMergeDataOption(seriesOpt.data, originalData)
      });
    }
  });
  ecModel.mergeOption(zrUtil.defaults({
    series: newSeriesOptList
  }, payload.newOption));
});
var _default = DataView;
module.exports = _default;