'use strict';

var RoamController = require('../helper/RoamController.js');
var throttle = require('../../util/throttle.js');
var model = require('../../util/model.js');
var util = require('../../../../../../zrender@6.0.0/node_modules/zrender/lib/core/util.js');
var helper = require('./helper.js');

var inner = model.makeInner();
function setViewInfoToCoordSysRecord(api, dataZoomModel, getRange) {
  inner(api).coordSysRecordMap.each(function (coordSysRecord) {
    var dzInfo = coordSysRecord.dataZoomInfoMap.get(dataZoomModel.uid);
    if (dzInfo) {
      dzInfo.getRange = getRange;
    }
  });
}
function disposeCoordSysRecordIfNeeded(api, dataZoomModel) {
  var coordSysRecordMap = inner(api).coordSysRecordMap;
  var coordSysKeyArr = coordSysRecordMap.keys();
  for (var i = 0; i < coordSysKeyArr.length; i++) {
    var coordSysKey = coordSysKeyArr[i];
    var coordSysRecord = coordSysRecordMap.get(coordSysKey);
    var dataZoomInfoMap = coordSysRecord.dataZoomInfoMap;
    if (dataZoomInfoMap) {
      var dzUid = dataZoomModel.uid;
      var dzInfo = dataZoomInfoMap.get(dzUid);
      if (dzInfo) {
        dataZoomInfoMap.removeKey(dzUid);
        if (!dataZoomInfoMap.keys().length) {
          disposeCoordSysRecord(coordSysRecordMap, coordSysRecord);
        }
      }
    }
  }
}
function disposeCoordSysRecord(coordSysRecordMap, coordSysRecord) {
  if (coordSysRecord) {
    coordSysRecordMap.removeKey(coordSysRecord.model.uid);
    var controller = coordSysRecord.controller;
    controller && controller.dispose();
  }
}
function createCoordSysRecord(api, coordSysModel) {
  // These init props will never change after record created.
  var coordSysRecord = {
    model: coordSysModel,
    containsPoint: util.curry(containsPoint, coordSysModel),
    dispatchAction: util.curry(dispatchAction, api),
    dataZoomInfoMap: null,
    controller: null
  };
  // Must not do anything depends on coordSysRecord outside the event handler here,
  // because coordSysRecord not completed yet.
  var controller = coordSysRecord.controller = new RoamController.default(api.getZr());
  util.each(['pan', 'zoom', 'scrollMove'], function (eventName) {
    controller.on(eventName, function (event) {
      var batch = [];
      coordSysRecord.dataZoomInfoMap.each(function (dzInfo) {
        // Check whether the behaviors (zoomOnMouseWheel, moveOnMouseMove,
        // moveOnMouseWheel, ...) enabled.
        if (!event.isAvailableBehavior(dzInfo.model.option)) {
          return;
        }
        var method = (dzInfo.getRange || {})[eventName];
        var range = method && method(dzInfo.dzReferCoordSysInfo, coordSysRecord.model.mainType, coordSysRecord.controller, event);
        !dzInfo.model.get('disabled', true) && range && batch.push({
          dataZoomId: dzInfo.model.id,
          start: range[0],
          end: range[1]
        });
      });
      batch.length && coordSysRecord.dispatchAction(batch);
    });
  });
  return coordSysRecord;
}
/**
 * This action will be throttled.
 */
function dispatchAction(api, batch) {
  if (!api.isDisposed()) {
    api.dispatchAction({
      type: 'dataZoom',
      animation: {
        easing: 'cubicOut',
        duration: 100
      },
      batch: batch
    });
  }
}
function containsPoint(coordSysModel, e, x, y) {
  return coordSysModel.coordinateSystem.containPoint([x, y]);
}
/**
 * Merge roamController settings when multiple dataZooms share one roamController.
 */
function mergeControllerParams(dataZoomInfoMap, coordSysRecord, api) {
  var controlType;
  // DO NOT use reserved word (true, false, undefined) as key literally. Even if encapsulated
  // as string, it is probably revert to reserved word by compress tool. See #7411.
  var prefix = 'type_';
  var typePriority = {
    'type_true': 2,
    'type_move': 1,
    'type_false': 0,
    'type_undefined': -1
  };
  var preventDefaultMouseMove = true;
  dataZoomInfoMap.each(function (dataZoomInfo) {
    var dataZoomModel = dataZoomInfo.model;
    var oneType = dataZoomModel.get('disabled', true) ? false : dataZoomModel.get('zoomLock', true) ? 'move' : true;
    if (typePriority[prefix + oneType] > typePriority[prefix + controlType]) {
      controlType = oneType;
    }
    // Prevent default move event by default. If one false, do not prevent. Otherwise
    // users may be confused why it does not work when multiple insideZooms exist.
    preventDefaultMouseMove = preventDefaultMouseMove && dataZoomModel.get('preventDefaultMouseMove', true);
  });
  return {
    controlType: controlType,
    opt: {
      // RoamController will enable all of these functionalities,
      // and the final behavior is determined by its event listener
      // provided by each inside zoom.
      zoomOnMouseWheel: true,
      moveOnMouseMove: true,
      moveOnMouseWheel: true,
      preventDefaultMouseMove: !!preventDefaultMouseMove,
      api: api,
      zInfo: {
        component: coordSysRecord.model
      },
      triggerInfo: {
        roamTrigger: null,
        isInSelf: coordSysRecord.containsPoint
      }
    }
  };
}
function installDataZoomRoamProcessor(registers) {
  registers.registerProcessor(registers.PRIORITY.PROCESSOR.FILTER, function (ecModel, api) {
    var apiInner = inner(api);
    var coordSysRecordMap = apiInner.coordSysRecordMap || (apiInner.coordSysRecordMap = util.createHashMap());
    coordSysRecordMap.each(function (coordSysRecord) {
      // `coordSysRecordMap` always exists (because it holds the `roam controller`, which should
      // better not re-create each time), but clear `dataZoomInfoMap` each round of the workflow.
      coordSysRecord.dataZoomInfoMap = null;
    });
    ecModel.eachComponent({
      mainType: 'dataZoom',
      subType: 'inside'
    }, function (dataZoomModel) {
      var dzReferCoordSysWrap = helper.collectReferCoordSysModelInfo(dataZoomModel);
      util.each(dzReferCoordSysWrap.infoList, function (dzCoordSysInfo) {
        var coordSysUid = dzCoordSysInfo.model.uid;
        var coordSysRecord = coordSysRecordMap.get(coordSysUid) || coordSysRecordMap.set(coordSysUid, createCoordSysRecord(api, dzCoordSysInfo.model));
        var dataZoomInfoMap = coordSysRecord.dataZoomInfoMap || (coordSysRecord.dataZoomInfoMap = util.createHashMap());
        // Notice these props might be changed each time for a single dataZoomModel.
        dataZoomInfoMap.set(dataZoomModel.uid, {
          dzReferCoordSysInfo: dzCoordSysInfo,
          model: dataZoomModel,
          getRange: null
        });
      });
    });
    // (1) Merge dataZoom settings for each coord sys and set to the roam controller.
    // (2) Clear coord sys if not refered by any dataZoom.
    coordSysRecordMap.each(function (coordSysRecord) {
      var controller = coordSysRecord.controller;
      var firstDzInfo;
      var dataZoomInfoMap = coordSysRecord.dataZoomInfoMap;
      if (dataZoomInfoMap) {
        var firstDzKey = dataZoomInfoMap.keys()[0];
        if (firstDzKey != null) {
          firstDzInfo = dataZoomInfoMap.get(firstDzKey);
        }
      }
      if (!firstDzInfo) {
        disposeCoordSysRecord(coordSysRecordMap, coordSysRecord);
        return;
      }
      var controllerParams = mergeControllerParams(dataZoomInfoMap, coordSysRecord, api);
      controller.enable(controllerParams.controlType, controllerParams.opt);
      throttle.createOrUpdate(coordSysRecord, 'dispatchAction', firstDzInfo.model.get('throttle', true), 'fixRate');
    });
  });
}

exports.disposeCoordSysRecordIfNeeded = disposeCoordSysRecordIfNeeded;
exports.installDataZoomRoamProcessor = installDataZoomRoamProcessor;
exports.setViewInfoToCoordSysRecord = setViewInfoToCoordSysRecord;
