import { CLLocationManager, CLAuthorizationStatus } from "CoreLocation"
import { TencentLBSLocationManager, TencentLBSLocation, TencentLBSRequestLevel, TencentLBSLocationManagerDelegate } from "TencentLBS"
import { NSError, Bundle } from "Foundation"
import { GetLocationOptions, GetLocationSuccess } from "../interface.uts"

/**
 * 判断当前是否是自定义基座
 */
export function checkHasIntegration() : boolean {
  // todo
  return true
}

/**
 * 定位 LBSLocation 类，封装定位相关方法
 */
class LBSLocation implements TencentLBSLocationManagerDelegate {

  // 定义 locationManager 属性，类型为 TencentLBSLocationManager
  locationManager! : TencentLBSLocationManager

  locationOptions ?: GetLocationOptions

  // 初始化 locationManager 方法
  configLocationManager() : boolean {

    if (this.locationManager == null) {
      // 从 info.plist 中读取 apiKey
      const apiKey = Bundle.main.infoDictionary?.["TencentLBSAPIKey"]

      // infoDictionary 获取的值类型为 any？
      if (apiKey == null) {
        // 如果 apiKey 为 null 返回 false
        console.log("apiKey 未配置")
        return false
      }
      // 调用API前需要设置同意用户隐私协议
      TencentLBSLocationManager.setUserAgreePrivacy(true)
      // 初始化 locationManager 实例对象
      this.locationManager = new TencentLBSLocationManager()
      // 设置 apiKey （因为 apiKey 是 any？类型，需要转成 string 类型赋值）
      this.locationManager.apiKey = apiKey! as string;
      this.locationManager.delegate = this
    }

    return true
  }

  // 请求定位权限
  requestPremission() {
    if (this.configLocationManager()) {
      const status = CLLocationManager.authorizationStatus()
      // 如果未获取过定位权限，则发起权限请求
      if (status == CLAuthorizationStatus.notDetermined) {
        this.locationManager.requestWhenInUseAuthorization()
      } else if (status == CLAuthorizationStatus.denied || status == CLAuthorizationStatus.restricted) {
        let ret = new UniError("uni-getLocation-tencent", -30, "permission missed.");
        options.fail?.(ret)
        options.complete?.(ret)
      }
    }
  }

  // 获取单次位置信息
  getLocation(locationOptions : GetLocationOptions) : boolean {

    // 初始化 locationManager
    if (!this.configLocationManager()) {
      // 初始化失败返回 false
      return false
    }

    this.locationOptions = locationOptions

    const status = CLLocationManager.authorizationStatus()
    if (status == CLAuthorizationStatus.authorizedAlways || status == CLAuthorizationStatus.authorizedWhenInUse) {
      // 是否需要返回逆地理编码
      let requestLevel = TencentLBSRequestLevel.geo
      if (locationOptions.geocode) {
        requestLevel = TencentLBSRequestLevel.name
      }

      // 请求单次定位信息
      this.locationManager.requestLocation(with = requestLevel, locationTimeout = 10, completionBlock = (location ?: TencentLBSLocation, err ?: NSError) : void => {
        if (location != null) {
          // 判断 address 是否有值
          var address = ""
          if (location!.address != null) {
            address = location!.address!
          }

          let response : GetLocationSuccess = {
            latitude: Number(location!.location.coordinate.latitude),
            longitude: Number(location!.location.coordinate.longitude),
            speed: Number(location!.location.speed),
            altitude: Number(location!.location.altitude),
            accuracy: Number(location!.location.horizontalAccuracy),
            verticalAccuracy: Number(location!.location.verticalAccuracy),
            horizontalAccuracy: Number(location!.location.horizontalAccuracy),
            address: address
          }

          locationOptions.success?.(response)
          locationOptions.complete?.(response);
        } else {
          let ret = new UniError("uni-getLocation-tencent", -10, err!.localizedDescription);
          locationOptions.fail?.(ret)
          locationOptions.complete?.(ret)
        }
      })
    } else {
      this.requestPremission()
    }
    return true
  }

  // 监听位置变化
  watchPosition(locationOptions : GetLocationOptions) {
    // 初始化 locationManager
    if (!this.configLocationManager()) {
      return
    }
    if (locationOptions.geocode) {
      this.locationManager.requestLevel = TencentLBSRequestLevel.name
    } else {
      this.locationManager.requestLevel = TencentLBSRequestLevel.geo
    }
    this.locationOptions = locationOptions
    this.locationManager.startUpdatingLocation()
  }

  // 清除监听
  clearWatch() {
    // 初始化 locationManager
    if (!this.configLocationManager()) {
      return
    }
    this.locationManager.stopUpdatingLocation()
  }

  // 实现定位出错的 delegate 方法

  tencentLBSDidChangeAuthorization(manager : TencentLBSLocationManager) {
    const status = this.getAuthorizationStatus()
    if (status == CLAuthorizationStatus.denied || status == CLAuthorizationStatus.restricted) {
      let ret = new UniError("uni-getLocation-tencent", -30, "permission missed.");
      options.fail?.(ret)
      options.complete?.(ret)
    } else if (status == CLAuthorizationStatus.authorizedAlways || status == CLAuthorizationStatus.authorizedWhenInUse) {
      this.getLocation(this.locationOptions)
    }
  }

  tencentLBSLocationManager(manager : TencentLBSLocationManager, @argumentLabel("didFailWithError") error : NSError) {
    let ret = new UniError("uni-getLocation-tencent", -10, error.localizedDescription);
    this.locationOptions?.fail?.(ret)
    this.locationOptions?.complete?.(ret)
  }

  // 实现位置更新的 delegate 方法
  tencentLBSLocationManager(manager : TencentLBSLocationManager, @argumentLabel("didUpdate") location : TencentLBSLocation) {

    // 判断 address 是否有值
    var address = ""
    if (location.address != null) {
      address = location.address!
    }

    let response : GetLocationSuccess = {
      latitude: Number(location.location.coordinate.latitude),
      longitude: Number(location.location.coordinate.longitude),
      speed: Number(location.location.speed),
      altitude: Number(location.location.altitude),
      accuracy: Number(location.location.horizontalAccuracy),
      verticalAccuracy: Number(location.location.verticalAccuracy),
      horizontalAccuracy: Number(location.location.horizontalAccuracy),
      address: address
    }
    this.locationOptions?.success?.(response)
    this.locationOptions?.complete?.(response)
  }

}

const LBSLocationTool : LBSLocation = new LBSLocation()

/**
 * 请求定位权限方法
 */
export function requestPremission() {
  LBSLocationTool.requestPremission()
}

/*
 * 获取位置信息方法（单次定位）
 */
export function getLocation(locationOptions : GetLocationOptions) : boolean {
  return LBSLocationTool.getLocation(locationOptions)
}

/**
 * 持续监听位置变化
 */
export function watchPosition(locationOptions : GetLocationOptions) {
  LBSLocationTool.watchPosition(locationOptions)
}

/**
 * 关闭监听位置变化
 */
export function clearWatch() {
  LBSLocationTool.clearWatch()
}