import {Plugin, Cordova} from './plugin';

export interface CompassHeading {

  /**
   * The heading in degrees from 0-359.99 at a single moment in time. (Number)
   */
  magneticHeading : number,

  /**
   * The heading relative to the geographic North Pole in degrees 0-359.99 at a single moment in time. A negative value indicates that the true heading can't be determined. (Number)
   */
  trueHeading : number,

  /**
   * The deviation in degrees between the reported heading and the true heading. (Number)
   */
  headingAccuracy : number,

  /**
   * The time at which this heading was determined. (DOMTimeStamp)
   */
  timestamp : any

}

export interface CompassOptions {

  /**
   * How often to retrieve the compass heading in milliseconds. (Number) (Default: 100)
   */
  frequency : number,

  /**
   * The change in degrees required to initiate a watchHeading success callback. When this value is set, frequency is ignored. (Number)
   */
  filter : number

}

/**
 * Requires Cordova plugin: `cordova-plugin-device-orientation`. For more info, please see the [Device Orientation docs](https://github.com/apache/cordova-plugin-device-orientation).
 *
 * ```
 * cordova plugin add https://github.com/apache/cordova-plugin-device-orientation.git
 * ````
 *
 * @usage
 * ```js
 * ```
 */
@Plugin({
  plugin: 'https://github.com/apache/cordova-plugin-device-orientation',
  pluginRef: 'navigator.compass'
})
export class DeviceOrientation {

  /**
   * Get the current compass heading.
   * @returns {Promise<CompassHeading>}
   */
  @Cordova()
  static getCurrentHeading() : Promise<CompassHeading> {
    // This Promise is replaced by one from the @Cordova decorator that wraps
    // the plugin's callbacks. We provide a dummy one here so TypeScript
    // knows that the correct return type is Promise, because there's no way
    // for it to know the return type from a decorator.
    // See https://github.com/Microsoft/TypeScript/issues/4881
    return new Promise<CompassHeading>((res, rej) => {});
  }

  /**
   * Gets the device's current heading at a regular interval
   * @param options
   * @returns {Promise<CompassHeading>}
   */
  @Cordova({
    callbackOrder: 'reverse'
  })
  static watchHeading(options? : CompassOptions) : Promise<CompassHeading> {
    // This Promise is replaced by one from the @Cordova decorator that wraps
    // the plugin's callbacks. We provide a dummy one here so TypeScript
    // knows that the correct return type is Promise, because there's no way
    // for it to know the return type from a decorator.
    // See https://github.com/Microsoft/TypeScript/issues/4881
    return new Promise<CompassHeading>((res, rej) => {});
  }

  /**
   * Stop watching the compass referenced by the watch ID parameter.
   * @param watchID
   */
  @Cordova({
    sync: true
  })
  static clearWatch(watchID) : void {}

}