react-native-biometric-verifier/src/hooks/useGeolocation.js

A React Native module for biometric verification with face recognition and QR code scanning

import { useCallback } from 'react';
import { Platform, PermissionsAndroid } from 'react-native';
import Geolocation from 'react-native-geolocation-service';

/**
 * Custom hook for requesting location permission and fetching current location.
 *
 * @param {Function} notifyMessage - Callback to show notifications (message, type).
 * @returns {Object} { requestLocationPermission, getCurrentLocation }
 */
export const useGeolocation = (notifyMessage) => {
  /**
   * Requests location permission (Android only).
   * @returns {Promise<boolean>} - True if permission granted, else false.
   */
  const requestLocationPermission = useCallback(async () => {
    if (Platform.OS !== 'android') return true;

    try {
      const granted = await PermissionsAndroid.request(
        PermissionsAndroid.PERMISSIONS.ACCESS_FINE_LOCATION,
        {
          title: 'Location Permission Required',
          message: 'This app needs your location to verify QR code scans.',
          buttonPositive: 'OK',
          buttonNegative: 'Cancel',
        }
      );

      const hasPermission = granted === PermissionsAndroid.RESULTS.GRANTED;

      if (!hasPermission) {
        notifyMessage?.('Cannot get location without permission.', 'error');
      }

      return hasPermission;
    } catch (error) {
      console.error('Location permission error:', error);
      notifyMessage?.('Location permission error.', 'error');
      return false;
    }
  }, [notifyMessage]);

  /**
   * Fetches the current location of the device.
   * @returns {Promise<GeolocationCoordinates>}
   */
  const getCurrentLocation = useCallback(
    () =>
      new Promise((resolve, reject) => {
        Geolocation.getCurrentPosition(
          (position) => {
            resolve(position.coords);
          },
          (error) => {
            notifyMessage?.('Unable to fetch current location.', 'error');
            reject(error);
          },
          {
            enableHighAccuracy: true,
            timeout: 15000,
            maximumAge: 10000,
            distanceFilter: 1,
          }
        );
      }),
    [notifyMessage]
  );

  return { requestLocationPermission, getCurrentLocation };
};