import { Injectable } from '@angular/core';
import { Platform, ActionSheetController } from 'ionic-angular'
import { Camera as NativeCamera } from '@ionic-native/camera';
import { File } from '@ionic-native/file';
import { CameraOptions } from './camera.type';

import { BaseLog as Log } from 'base-log';
const log = new Log('Camera');

@Injectable()
export class Camera{
  constructor(
    public platform: Platform,
    public actionSheetCtrl:ActionSheetController,
    public nativeCamera:NativeCamera,
    public file:File
  ){

  }

  defaultOptions:CameraOptions = {
    targetWidth: 750,
    quality: 80, // 质量默认为100
    encodingType: 0,// 图片类型默认为JPEG，1为PNG
    destinationType: 0 // 返回数据类型默认0为base64-encoded，1为file URI，2为native URI
  }

  cleanup = () => {
    if(!this.platform.is('cordova')) return;
    return this.nativeCamera.cleanup();
  }

  // 打开相册
  album = (options?: CameraOptions):Promise<any> => {
    if(!this.platform.is('cordova')) return Promise.resolve();
    options = Object.assign({}, this.defaultOptions, options);
    options.sourceType = 0;
    log.info('options',options,2);
    return this.nativeCamera.getPicture(options).then((imageData)=>{
      imageData = this.filterImageData(imageData,options);
      return Promise.resolve(imageData);
    },(err)=>{
      log.info('err',err,2);
    });
  }

  // 打开相机,默认定义相机的长宽
  photo = (width?, height?):Promise<any> => {
    if(!this.platform.is('cordova')) return Promise.resolve();
    let options:CameraOptions;
    if(typeof width == 'object'){
      options = Object.assign({}, this.defaultOptions, width);
    }else{
      options = this.defaultOptions;
      options.targetWidth = width || 200;
      options.targetHeight = height || 200;
    }
    log.info('options',options,2);
    return this.nativeCamera.getPicture(options).then((imageData)=>{
      imageData = this.filterImageData(imageData,options);
      return Promise.resolve(imageData);
    },(err)=>{
      log.info('err',err,2);
    });
  }

  // 处理图片数据
  filterImageData = (imageData,options) => {
    if(options.destinationType == 0){ // base64
      imageData = 'data:image/'+ (options.encodingType == 0 ? 'jpeg' : 'png') +
        ';base64,' + imageData;
      return imageData;
    }else{
      return imageData
    }
  }
}