remoteConfigDownload.ts

import NetInfo from '@react-native-community/netinfo';
import remoteConfig from '@react-native-firebase/remote-config';
import { AppState } from 'react-native';
import { RemoteConfigState } from 'store/remoteConfig/types';
import { useStore } from 'store/useStore';
import { logError } from 'utils/genericError';

const DEFAULT_CONFIG_DURATION = __DEV__ ? 0 : 30 * 60; // 30 mins

const fbConfig = remoteConfig();

const syncRemoteConfig = () => {
  fbConfig.fetchAndActivate().then(async fetchedRemotely => {
    if (fetchedRemotely) {
      const { setRemoteConfig } = useStore.getState();

      await fbConfig.ensureInitialized();

      const parameters = remoteConfig().getAll();
      const config: RemoteConfigState = {};

      Object.entries(parameters).forEach($ => {
        const [key, entry] = $;
        try {
          config[key as keyof RemoteConfigState] = JSON.parse(entry.asString());
        } catch (error) {
          logError(
            'updateRemoteConfig',
            error,
            { key, source: entry.getSource() },
            { entry: entry.asString() },
          );
        }
      });

      setRemoteConfig(config);
    }
  });
};

export const initRemoteConfig = () => {
  fbConfig.setConfigSettings({
    minimumFetchIntervalMillis: DEFAULT_CONFIG_DURATION,
  });

  AppState.addEventListener('change', async nextAppState => {
    if (nextAppState === 'active') {
      syncRemoteConfig();
    }
  });

  NetInfo.addEventListener(({ isConnected, isInternetReachable }) => {
    if (isConnected && isInternetReachable) {
      syncRemoteConfig();
    }
  });
};