package com.mapbox.mapboxsdk.testapp.utils;

import android.app.Activity;
import android.support.test.espresso.IdlingResource;

import timber.log.Timber;

import com.mapbox.mapboxsdk.maps.MapboxMap;

import java.lang.reflect.Field;

public class OnMapReadyIdlingResource implements IdlingResource {

  private final Activity activity;
  private MapboxMap mapboxMap;
  private IdlingResource.ResourceCallback resourceCallback;

  public OnMapReadyIdlingResource(Activity activity) {
    this.activity = activity;
  }

  @Override
  public String getName() {
    return getClass().getSimpleName();
  }

  @Override
  public boolean isIdleNow() {
    boolean idle = isMapboxMapReady();
    if (idle && resourceCallback != null) {
      resourceCallback.onTransitionToIdle();
    }
    return idle;
  }

  @Override
  public void registerIdleTransitionCallback(ResourceCallback resourceCallback) {
    this.resourceCallback = resourceCallback;
  }

  private boolean isMapboxMapReady() {
    try {
      Field field = activity.getClass().getDeclaredField("mapboxMap");
      field.setAccessible(true);
      mapboxMap = (MapboxMap) field.get(activity);
      Timber.e("isMapboxReady called with value " + (mapboxMap != null));
      return mapboxMap != null;
    } catch (Exception exception) {
      Timber.e("could not reflect", exception);
      return false;
    }
  }

  public MapboxMap getMapboxMap() {
    return mapboxMap;
  }
}