import UiConfig from './uiConfig'
import UiMgr, { PageParams } from './uiMgr'
import { RawLocation, RouteConfig, Location } from 'vue-router/types'
import getRunTime from '@/core/runTime'
import util from '@/core/utils/index'
import { WxEnv } from '@/core/runTime/wxMpRuntime'

export default class WxMpUiMgr extends UiMgr {
  private _wxEnv!: WxEnv
  constructor(config: UiConfig) {
    super(config)
    this._wxEnv = getRunTime().g
  }

  protected init() {}

  pushPage(location: RawLocation, { onComplete, onAbort }: PageParams = {}) {
    if (!this.routerConfig || !this._wxEnv) {
      return
    }

    const path: string = this.findPath(location)
    if (path) {
      this._wxEnv.navigateTo({
        url: path
      })
    }
  }

  popPage() {
    if (!this._wxEnv) {
      return
    }

    this._wxEnv.navigateBack()
  }

  /**
   * 注意微信小程序的gotoPage只能往回反，意思n只能小于0
   */
  gotoPage(n: number) {
    if (!this._wxEnv || n < 0) {
      return
    }

    this._wxEnv.navigateBack({
      delta: n
    })
  }

  redirectPage(location: RawLocation, { onComplete, onAbort }: PageParams = {}) {
    if (!this._wxEnv) {
      return
    }
    const path: string = this.findPath(location)
    if (path) {
      this._wxEnv.redirectTo({
        url: path
      })
    }
  }

  goHomePage() {
    if (!this._wxEnv) {
      return
    }

    let pageNums: number = this._wxEnv.getCurrentPages()
    this._wxEnv.navigateBack({
      delta: pageNums
    })
  }

  private findPath(location: RawLocation) {
    if (util.isString(location)) {
      return this.findPathByName(location as string)
    }
    return (location as Location).path || ''
  }

  private findPathByName(name: string) {
    if (!name || !this.routerConfig) {
      return ''
    }

    let routes: Array<RouteConfig> = this.routerConfig.routes || []
    for (let i = 0; i < routes.length; ++i) {
      if (routes[i].name === name) {
        return routes[i].path
      }
    }

    return ''
  }
}