import { Coordinate } from 'ol/coordinate'
import { Extent } from 'ol/extent'
import { IMap, IView } from '../../../../web-map/web-map'
import BaseTool, { OnToolActivedParams, OnToolActivedReture } from '../../base-tool'

export type ICenterZoom = {
  center: Coordinate | [number | number]
  zoom: number
}

/**
 * 返回起始位置工具类
 */
export class ZoomHomeTool extends BaseTool<{

}> {

  //#region 私有属性

  private _homeExtent: Extent | ICenterZoom

  //#endregion

  //#region 构造函数

  /**
   * 构造返回起始位置工具对象
   * @param map 地图对象
   * @param view 视图对象
   */
  constructor (map: IMap, view: IView) {
    super(map, view, true)
    this._homeExtent = {
      center: view.getCenter(),
      zoom: view.getZoom(),
    }
  }

  //#endregion

  //#region 公有方法

  /** 设置初始范围 */
  setHomeZoom (extent: Extent) : this {
    this._homeExtent = extent
    return this
  }

  /** 工具激化处理事件 */
  onToolActived (event: OnToolActivedParams<this>) : OnToolActivedReture {
    if (!super.onToolActived(event)) {
      return false
    }
    if (Array.isArray(this._homeExtent)) {
      this.view_.fit(this._homeExtent, {
        duration: 500
      })
    } else {
      this.view_.animate({
        ...this._homeExtent, duration: 500
      })
    }
    return true
  }

  //#endregion

}

export default ZoomHomeTool