/**
 * @Author: Caven
 * @Date: 2020-08-30 23:50:53
 */

import { PlotEventType } from '@/utils/event/index.js'

class Edit {
    constructor(overlay) {
        this._viewer = undefined
        this._layer = undefined
        this._overlay = overlay
        this._overlay.show = false
        this._delegate = new global.DC.Namespace.Cesium.Entity()
        this._delegate.merge(overlay.delegate)
        this._options = {}
        this._positions = []
    }

    get curEditTool () {
        return this._viewer.curEditTool
    }

    /**
   *
   * @private
   */
    _mountedHook () {
        this._overlay.positions = global.DC.Transform.transformCartesianArrayToWGS84Array(
            this._positions
        )
        this._overlay.show = true
        this._options.onEditStop && this._options.onEditStop(this._overlay)
    }

    /**
   *
   * @private
   */
    _stopedHook () {
        let position
        if (this._overlay.customType == 'polygon' || this._overlay.customType == 'polyline') {
            position = this._positions.filter((item, index) => index % 2 === 0)
        } else {
            position = this._positions
        }

        this._overlay.positions = global.DC.Transform.transformCartesianArrayToWGS84Array(
            position
        )

        this._overlay.show = true
        this._options.onEditStop && this._options.onEditStop(this._overlay)
    }

    /**
   *
   * @private
   */
    _mountAnchor () {
        this._positions = [].concat(
            global.DC.Transform.transformWGS84ArrayToCartesianArray(this._overlay.positions)
        )
        this._positions.forEach((item, index) => {
            this.curEditTool.fire(PlotEventType.CREATE_ANCHOR, {
                position: item,
                index: index
            })
        })
    }

    /**
   *
   * @param pickedAnchor
   * @param position
   * @returns {boolean}
   * @private
   */
    _onEditAnchorStop ({ pickedAnchor, position }) {
        let properties = pickedAnchor.properties.getValue(global.DC.Namespace.Cesium.JulianDate.now())
        this._positions[properties.index] = position
    }

    /**
   *
   * @param pickedAnchor
   * @param position
   * @private
   */
    _onAnchorMoving ({ pickedAnchor, position }) {
        let properties = pickedAnchor.properties.getValue(global.DC.Namespace.Cesium.JulianDate.now())
        this._positions[properties.index] = position
    }

    /**
     *
     * @param pickedAnchor
     * @param position
     * @private
     */
    _onEditStop ({ pickedAnchor, position }) {
        this._unbindEvent()
        this._viewer.curEditTool.deactivate()
        this._layer.entities.remove(this._delegate)
        this._stopedHook()
    }

    /**
   *
   * @returns {Edit}
   * @private
   */
    _bindEvent () {
        this.curEditTool.on(PlotEventType.ANCHOR_MOVING, this._onAnchorMoving, this)
        this.curEditTool.on(
            PlotEventType.EDIT_ANCHOR_STOP,
            this._onEditAnchorStop,
            this
        )
        this.curEditTool.on(PlotEventType.EDIT_STOP, this._onEditStop, this)
        return this
    }

    /**
   *
   * @private
   */
    _unbindEvent () {
        this.curEditTool.off(PlotEventType.ANCHOR_MOVING, this._onAnchorMoving, this)
        this.curEditTool.off(
            PlotEventType.EDIT_ANCHOR_STOP,
            this._onEditAnchorStop,
            this
        )
        this.curEditTool.off(PlotEventType.EDIT_STOP, this._onEditStop, this)
    }

    /**
   *
   * @param measure
   * @param options
   * @returns {Edit}
   */
    start (measure, options) {
        this._viewer = measure.viewer
        this._layer = measure.layer
        this._options = options
        this._viewer.curEditTool.tooltipMess = '点击锚点移动,右击结束编辑'
        this._viewer.curEditTool.activate(options)
        this._mountedHook()
        this._mountAnchor()
        this._unbindEvent()
        this._bindEvent()
        return this
    }
}

export default Edit