import { Injectable } from '@angular/core';
import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';

export interface CameraOptions {
  /** Picture quality in range 0-100. Default is 50 */
  quality?: number;
  /**
   * Choose the format of the return value.
   * Defined in Camera.DestinationType. Default is FILE_URI.
   *      DATA_URL : 0,   Return image as base64-encoded string,
   *      FILE_URI : 1,   Return image file URI,
   *      NATIVE_URI : 2  Return image native URI
   *          (e.g., assets-library:// on iOS or content:// on Android)
   */
  destinationType?: number;
  /**
   * Set the source of the picture.
   * Defined in Camera.PictureSourceType. Default is CAMERA.
   *      PHOTOLIBRARY : 0,
   *      CAMERA : 1,
   *      SAVEDPHOTOALBUM : 2
   */
  sourceType?: number;
  /** Allow simple editing of image before selection. */
  allowEdit?: boolean;
  /**
   * Choose the returned image file's encoding.
   * Defined in Camera.EncodingType. Default is JPEG
   *      JPEG : 0    Return JPEG encoded image
   *      PNG : 1     Return PNG encoded image
   */
  encodingType?: number;
  /**
   * Width in pixels to scale image. Must be used with targetHeight.
   * Aspect ratio remains constant.
   */
  targetWidth?: number;
  /**
   * Height in pixels to scale image. Must be used with targetWidth.
   * Aspect ratio remains constant.
   */
  targetHeight?: number;
  /**
   * Set the type of media to select from. Only works when PictureSourceType
   * is PHOTOLIBRARY or SAVEDPHOTOALBUM. Defined in Camera.MediaType
   *      PICTURE: 0      allow selection of still pictures only. DEFAULT.
   *          Will return format specified via DestinationType
   *      VIDEO: 1        allow selection of video only, WILL ALWAYS RETURN FILE_URI
   *      ALLMEDIA : 2    allow selection from all media types
   */
  mediaType?: number;
  /** Rotate the image to correct for the orientation of the device during capture. */
  correctOrientation?: boolean;
  /** Save the image to the photo album on the device after capture. */
  saveToPhotoAlbum?: boolean;
  /**
   * Choose the camera to use (front- or back-facing).
   * Defined in Camera.Direction. Default is BACK.
   *      BACK: 0
   *      FRONT: 1
   */
  cameraDirection?: number;
  /** iOS-only options that specify popover location in iPad. Defined in CameraPopoverOptions. */
  popoverOptions?: CameraPopoverOptions;
}

/**
 * iOS-only parameters that specify the anchor element location and arrow direction
 * of the popover when selecting images from an iPad's library or album.
 */
export interface CameraPopoverOptions {
  x: number;
  y: number;
  width: number;
  height: number;
  /**
   * Direction the arrow on the popover should point. Defined in Camera.PopoverArrowDirection
   * Matches iOS UIPopoverArrowDirection constants.
   *      ARROW_UP : 1,
   *      ARROW_DOWN : 2,
   *      ARROW_LEFT : 4,
   *      ARROW_RIGHT : 8,
   *      ARROW_ANY : 15
   */
  arrowDir: number;
}

export enum DestinationType {
  DATA_URL = 0,
  FILE_URL,
  NATIVE_URI
}

export enum EncodingType {
  JPEG = 0,
  PNG
}

export enum MediaType {
  PICTURE = 0,
  VIDEO,
  ALLMEDIA
}

export enum PictureSourceType {
  PHOTOLIBRARY = 0,
  CAMERA,
  SAVEDPHOTOALBUM
}

export enum PopoverArrowDirection {
  ARROW_UP = 1,
  ARROW_DOWN,
  ARROW_LEFT,
  ARROW_RIGHT,
  ARROW_ANY
}

export enum Direction {
  BACK = 0,
  FRONT
}

/**
 * @name Camera
 * @description
 * Take a photo or capture video.
 *
 * Requires and the Cordova plugin: `cordova-plugin-camera`. For more info, please see the [Cordova Camera Plugin Docs](https://github.com/apache/cordova-plugin-camera).
 *
 * @usage
 * ```typescript
 * import { Camera, CameraOptions } from '@ionic-native/camera';
 *
 * constructor(private camera: Camera) { }
 *
 * ...
 *
 *
 * const options: CameraOptions = {
 *   quality: 100,
 *   destinationType: this.camera.DestinationType.DATA_URL,
 *   encodingType: this.camera.EncodingType.JPEG,
 *   mediaType: this.camera.MediaType.PICTURE
 * }
 *
 * this.camera.getPicture(options).then((imageData) => {
 *  // imageData is either a base64 encoded string or a file URI
 *  // If it's base64:
 *  let base64Image = 'data:image/jpeg;base64,' + imageData;
 * }, (err) => {
 *  // Handle error
 * });
 * ```
 * @interfaces
 * CameraOptions
 * CameraPopoverOptions
 */
@Plugin({
  pluginName: 'Camera',
  plugin: 'cordova-plugin-camera',
  pluginRef: 'navigator.camera',
  repo: 'https://github.com/apache/cordova-plugin-camera',
  platforms: ['Android', 'Browser', 'iOS', 'Windows']
})
@Injectable()
export class Camera extends IonicNativePlugin {

  /**
   * Constant for possible destination types
   */
  DestinationType = {
    /** Return base64 encoded string. DATA_URL can be very memory intensive and cause app crashes or out of memory errors. Use FILE_URI or NATIVE_URI if possible */
    DATA_URL: 0,
    /** Return file uri (content://media/external/images/media/2 for Android) */
    FILE_URI: 1,
    /** Return native uri (eg. asset-library://... for iOS) */
    NATIVE_URI: 2
  };

  /**
   * Convenience constant
   */
  EncodingType = {
    /** Return JPEG encoded image */
    JPEG: 0,
    /** Return PNG encoded image */
    PNG: 1
  };

  /**
   * Convenience constant
   */
  MediaType = {
    /** Allow selection of still pictures only. DEFAULT. Will return format specified via DestinationType */
    PICTURE: 0,
    /** Allow selection of video only, ONLY RETURNS URL */
    VIDEO: 1,
    /** Allow selection from all media types */
    ALLMEDIA: 2
  };


  /**
   * Convenience constant
   */
  PictureSourceType = {
    /** Choose image from picture library (same as SAVEDPHOTOALBUM for Android) */
    PHOTOLIBRARY: 0,
    /** Take picture from camera */
    CAMERA: 1,
    /** Choose image from picture library (same as PHOTOLIBRARY for Android) */
    SAVEDPHOTOALBUM: 2
  };


  /**
   * Convenience constant
   */
  PopoverArrowDirection = {
    ARROW_UP: 1,
    ARROW_DOWN: 2,
    ARROW_LEFT: 4,
    ARROW_RIGHT: 8,
    ARROW_ANY: 15
  };

  /**
   * Convenience constant
   */
  Direction = {
    /** Use the back-facing camera */
    BACK: 0,
    /** Use the front-facing camera */
    FRONT: 1
  };

  /**
   * Take a picture or video, or load one from the library.
   * @param {CameraOptions} [options] Options that you want to pass to the camera. Encoding type, quality, etc. Platform-specific quirks are described in the [Cordova plugin docs](https://github.com/apache/cordova-plugin-camera#cameraoptions-errata-).
   * @returns {Promise<any>} Returns a Promise that resolves with Base64 encoding of the image data, or the image file URI, depending on cameraOptions, otherwise rejects with an error.
   */
  @Cordova({
    callbackOrder: 'reverse'
  })
  getPicture(options?: CameraOptions): Promise<any> {
    return;
  }

  /**
   * Remove intermediate image files that are kept in temporary storage after calling camera.getPicture.
   * Applies only when the value of Camera.sourceType equals Camera.PictureSourceType.CAMERA and the Camera.destinationType equals Camera.DestinationType.FILE_URI.
   * @returns {Promise<any>}
   */
  @Cordova({
    platforms: ['iOS']
  })
  cleanup(): Promise<any> {
    return;
  }

}