package com.mapbox.mapboxsdk.testapp.utils;

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

import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;

import java.lang.reflect.Field;

public class OnMapReadyIdlingResource implements IdlingResource, OnMapReadyCallback {

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

  public OnMapReadyIdlingResource(Activity activity) {
    this.activity = activity;
    try {
      Field field = activity.getClass().getDeclaredField("mapView");
      field.setAccessible(true);
      ((MapView) field.get(activity)).getMapAsync(this);
    } catch (Exception err) {
      throw new RuntimeException(err);
    }

  }

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

  @Override
  public boolean isIdleNow() {
    return mapboxMap != null;
  }

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

  public MapboxMap getMapboxMap() {
    return mapboxMap;
  }

  @Override
  public void onMapReady(MapboxMap mapboxMap) {
    this.mapboxMap = mapboxMap;
    if (resourceCallback != null) {
      resourceCallback.onTransitionToIdle();
    }
  }
}