import { Injectable } from '@angular/core';
import *  as camera from 'nativescript-camera';
import { ImageSource } from 'tns-core-modules/image-source/image-source';

@Injectable({
  providedIn: 'root'
})
export class MyCameraService {

  constructor() { }

  takePicture(): Promise<string> {
    var result = new Promise<string>((resolve, reject) => {
        camera.requestPermissions().
        then(
              () => {
              camera.takePicture().then(
                  (imageAsset) => {
                      var src = new ImageSource();
                      src.fromAsset(imageAsset).then(
                          (source) => {
                              resolve(source.toBase64String("png", 75));
                          }
                      );
                  }
                  ).catch((error) => alert(error.message));
            }, () => {
              alert("Request rejected");
            }
        ).catch();
    });
    return result;
  }
}