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

var modelUtil = require("../../util/model");

/*
* 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 each = zrUtil.each;
var isObject = zrUtil.isObject;
var POSSIBLE_STYLES = ['areaStyle', 'lineStyle', 'nodeStyle', 'linkStyle', 'chordStyle', 'label', 'labelLine'];

function compatEC2ItemStyle(opt) {
  var itemStyleOpt = opt && opt.itemStyle;

  if (!itemStyleOpt) {
    return;
  }

  for (var i = 0, len = POSSIBLE_STYLES.length; i < len; i++) {
    var styleName = POSSIBLE_STYLES[i];
    var normalItemStyleOpt = itemStyleOpt.normal;
    var emphasisItemStyleOpt = itemStyleOpt.emphasis;

    if (normalItemStyleOpt && normalItemStyleOpt[styleName]) {
      opt[styleName] = opt[styleName] || {};

      if (!opt[styleName].normal) {
        opt[styleName].normal = normalItemStyleOpt[styleName];
      } else {
        zrUtil.merge(opt[styleName].normal, normalItemStyleOpt[styleName]);
      }

      normalItemStyleOpt[styleName] = null;
    }

    if (emphasisItemStyleOpt && emphasisItemStyleOpt[styleName]) {
      opt[styleName] = opt[styleName] || {};

      if (!opt[styleName].emphasis) {
        opt[styleName].emphasis = emphasisItemStyleOpt[styleName];
      } else {
        zrUtil.merge(opt[styleName].emphasis, emphasisItemStyleOpt[styleName]);
      }

      emphasisItemStyleOpt[styleName] = null;
    }
  }
}

function convertNormalEmphasis(opt, optType, useExtend) {
  if (opt && opt[optType] && (opt[optType].normal || opt[optType].emphasis)) {
    var normalOpt = opt[optType].normal;
    var emphasisOpt = opt[optType].emphasis;

    if (normalOpt) {
      // Timeline controlStyle has other properties besides normal and emphasis
      if (useExtend) {
        opt[optType].normal = opt[optType].emphasis = null;
        zrUtil.defaults(opt[optType], normalOpt);
      } else {
        opt[optType] = normalOpt;
      }
    }

    if (emphasisOpt) {
      opt.emphasis = opt.emphasis || {};
      opt.emphasis[optType] = emphasisOpt;
    }
  }
}

function removeEC3NormalStatus(opt) {
  convertNormalEmphasis(opt, 'itemStyle');
  convertNormalEmphasis(opt, 'lineStyle');
  convertNormalEmphasis(opt, 'areaStyle');
  convertNormalEmphasis(opt, 'label');
  convertNormalEmphasis(opt, 'labelLine'); // treemap

  convertNormalEmphasis(opt, 'upperLabel'); // graph

  convertNormalEmphasis(opt, 'edgeLabel');
}

function compatTextStyle(opt, propName) {
  // Check whether is not object (string\null\undefined ...)
  var labelOptSingle = isObject(opt) && opt[propName];
  var textStyle = isObject(labelOptSingle) && labelOptSingle.textStyle;

  if (textStyle) {
    for (var i = 0, len = modelUtil.TEXT_STYLE_OPTIONS.length; i < len; i++) {
      var propName = modelUtil.TEXT_STYLE_OPTIONS[i];

      if (textStyle.hasOwnProperty(propName)) {
        labelOptSingle[propName] = textStyle[propName];
      }
    }
  }
}

function compatEC3CommonStyles(opt) {
  if (opt) {
    removeEC3NormalStatus(opt);
    compatTextStyle(opt, 'label');
    opt.emphasis && compatTextStyle(opt.emphasis, 'label');
  }
}

function processSeries(seriesOpt) {
  if (!isObject(seriesOpt)) {
    return;
  }

  compatEC2ItemStyle(seriesOpt);
  removeEC3NormalStatus(seriesOpt);
  compatTextStyle(seriesOpt, 'label'); // treemap

  compatTextStyle(seriesOpt, 'upperLabel'); // graph

  compatTextStyle(seriesOpt, 'edgeLabel');

  if (seriesOpt.emphasis) {
    compatTextStyle(seriesOpt.emphasis, 'label'); // treemap

    compatTextStyle(seriesOpt.emphasis, 'upperLabel'); // graph

    compatTextStyle(seriesOpt.emphasis, 'edgeLabel');
  }

  var markPoint = seriesOpt.markPoint;

  if (markPoint) {
    compatEC2ItemStyle(markPoint);
    compatEC3CommonStyles(markPoint);
  }

  var markLine = seriesOpt.markLine;

  if (markLine) {
    compatEC2ItemStyle(markLine);
    compatEC3CommonStyles(markLine);
  }

  var markArea = seriesOpt.markArea;

  if (markArea) {
    compatEC3CommonStyles(markArea);
  }

  var data = seriesOpt.data; // Break with ec3: if `setOption` again, there may be no `type` in option,
  // then the backward compat based on option type will not be performed.

  if (seriesOpt.type === 'graph') {
    data = data || seriesOpt.nodes;
    var edgeData = seriesOpt.links || seriesOpt.edges;

    if (edgeData && !zrUtil.isTypedArray(edgeData)) {
      for (var i = 0; i < edgeData.length; i++) {
        compatEC3CommonStyles(edgeData[i]);
      }
    }

    zrUtil.each(seriesOpt.categories, function (opt) {
      removeEC3NormalStatus(opt);
    });
  }

  if (data && !zrUtil.isTypedArray(data)) {
    for (var i = 0; i < data.length; i++) {
      compatEC3CommonStyles(data[i]);
    }
  } // mark point data


  var markPoint = seriesOpt.markPoint;

  if (markPoint && markPoint.data) {
    var mpData = markPoint.data;

    for (var i = 0; i < mpData.length; i++) {
      compatEC3CommonStyles(mpData[i]);
    }
  } // mark line data


  var markLine = seriesOpt.markLine;

  if (markLine && markLine.data) {
    var mlData = markLine.data;

    for (var i = 0; i < mlData.length; i++) {
      if (zrUtil.isArray(mlData[i])) {
        compatEC3CommonStyles(mlData[i][0]);
        compatEC3CommonStyles(mlData[i][1]);
      } else {
        compatEC3CommonStyles(mlData[i]);
      }
    }
  } // Series


  if (seriesOpt.type === 'gauge') {
    compatTextStyle(seriesOpt, 'axisLabel');
    compatTextStyle(seriesOpt, 'title');
    compatTextStyle(seriesOpt, 'detail');
  } else if (seriesOpt.type === 'treemap') {
    convertNormalEmphasis(seriesOpt.breadcrumb, 'itemStyle');
    zrUtil.each(seriesOpt.levels, function (opt) {
      removeEC3NormalStatus(opt);
    });
  } else if (seriesOpt.type === 'tree') {
    removeEC3NormalStatus(seriesOpt.leaves);
  } // sunburst starts from ec4, so it does not need to compat levels.

}

function toArr(o) {
  return zrUtil.isArray(o) ? o : o ? [o] : [];
}

function toObj(o) {
  return (zrUtil.isArray(o) ? o[0] : o) || {};
}

function _default(option, isTheme) {
  each(toArr(option.series), function (seriesOpt) {
    isObject(seriesOpt) && processSeries(seriesOpt);
  });
  var axes = ['xAxis', 'yAxis', 'radiusAxis', 'angleAxis', 'singleAxis', 'parallelAxis', 'radar'];
  isTheme && axes.push('valueAxis', 'categoryAxis', 'logAxis', 'timeAxis');
  each(axes, function (axisName) {
    each(toArr(option[axisName]), function (axisOpt) {
      if (axisOpt) {
        compatTextStyle(axisOpt, 'axisLabel');
        compatTextStyle(axisOpt.axisPointer, 'label');
      }
    });
  });
  each(toArr(option.parallel), function (parallelOpt) {
    var parallelAxisDefault = parallelOpt && parallelOpt.parallelAxisDefault;
    compatTextStyle(parallelAxisDefault, 'axisLabel');
    compatTextStyle(parallelAxisDefault && parallelAxisDefault.axisPointer, 'label');
  });
  each(toArr(option.calendar), function (calendarOpt) {
    convertNormalEmphasis(calendarOpt, 'itemStyle');
    compatTextStyle(calendarOpt, 'dayLabel');
    compatTextStyle(calendarOpt, 'monthLabel');
    compatTextStyle(calendarOpt, 'yearLabel');
  }); // radar.name.textStyle

  each(toArr(option.radar), function (radarOpt) {
    compatTextStyle(radarOpt, 'name');
  });
  each(toArr(option.geo), function (geoOpt) {
    if (isObject(geoOpt)) {
      compatEC3CommonStyles(geoOpt);
      each(toArr(geoOpt.regions), function (regionObj) {
        compatEC3CommonStyles(regionObj);
      });
    }
  });
  each(toArr(option.timeline), function (timelineOpt) {
    compatEC3CommonStyles(timelineOpt);
    convertNormalEmphasis(timelineOpt, 'label');
    convertNormalEmphasis(timelineOpt, 'itemStyle');
    convertNormalEmphasis(timelineOpt, 'controlStyle', true);
    var data = timelineOpt.data;
    zrUtil.isArray(data) && zrUtil.each(data, function (item) {
      if (zrUtil.isObject(item)) {
        convertNormalEmphasis(item, 'label');
        convertNormalEmphasis(item, 'itemStyle');
      }
    });
  });
  each(toArr(option.toolbox), function (toolboxOpt) {
    convertNormalEmphasis(toolboxOpt, 'iconStyle');
    each(toolboxOpt.feature, function (featureOpt) {
      convertNormalEmphasis(featureOpt, 'iconStyle');
    });
  });
  compatTextStyle(toObj(option.axisPointer), 'label');
  compatTextStyle(toObj(option.tooltip).axisPointer, 'label');
}

module.exports = _default;