nomadmania-app/src/utils/backgroundLocation.ts

import * as TaskManager from 'expo-task-manager';
import * as Location from 'expo-location';
import axios from 'axios';
import { storage, StoreType } from 'src/storage';
import { Platform } from 'react-native';
import { API_URL, APP_VERSION } from 'src/constants';
import { API } from 'src/types';

const LOCATION_TASK_NAME = 'BACKGROUND_LOCATION_TASK';

TaskManager.defineTask(LOCATION_TASK_NAME, async ({ data, error }) => {
  if (error) {
    console.error('[BackgroundLocation] Task error:', error);
    return;
  }
  if (data) {
    const { locations } = data as any;
    if (locations && locations.length > 0) {
      const { coords } = locations[0];
      const token = storage.get('token', StoreType.STRING);

      if (!token) {
        return;
      }

      try {
        const response = await axios.postForm(
          API_URL + '/' + API.UPDATE_LOCATION,
          {
            token,
            lat: coords.latitude,
            lng: coords.longitude
          },
          {
            headers: {
              Platform: Platform.OS,
              'App-Version': APP_VERSION
            }
          }
        );
      } catch (sendError) {
        console.error('[BackgroundLocation] Sending location failed:', sendError);
      }
    }
  }
});

export const startBackgroundLocationUpdates = async () => {
  const hasStarted = await Location.hasStartedLocationUpdatesAsync(LOCATION_TASK_NAME);
  if (hasStarted) {
    return;
  }

  await Location.startLocationUpdatesAsync(LOCATION_TASK_NAME, {
    accuracy: Location.Accuracy.High,
    // 30 minutes for Android
    timeInterval: 30 * 60 * 1000,
    showsBackgroundLocationIndicator: false,
    pausesUpdatesAutomatically: false,
    // banner on Android
    foregroundService: {
      notificationTitle: 'NomadMania tracking your location',
      notificationBody: 'Location is used in background every 30 minutes.'
      // notificationColor: '#0F3F4F'
    },
    // iOS only
    activityType: Location.ActivityType.Other,
    // 1 minute for iOS
    deferredUpdatesInterval: 60 * 1000
  });
};

export const stopBackgroundLocationUpdates = async () => {
  const hasStarted = await Location.hasStartedLocationUpdatesAsync(LOCATION_TASK_NAME);
  if (hasStarted) {
    await Location.stopLocationUpdatesAsync(LOCATION_TASK_NAME);
  }
};