notesnook/apps/mobile/App.js

import React, {useEffect, useState} from 'react';
import MMKV from 'react-native-mmkv-storage';
import Orientation from 'react-native-orientation';
import {Loading} from './Loading';
import {getColorScheme, scale, updateSize} from './src/common/common';
import {useTracked} from './src/provider';
import {ACTIONS} from './src/provider/actions';
import {defaultState} from './src/provider/defaultState';
import {eSubscribeEvent, eUnSubscribeEvent} from './src/services/eventManager';
import {eDispatchAction, eStartSyncer} from './src/services/events';
import {db, DDS} from './src/utils/utils';
import {SafeAreaProvider} from 'react-native-safe-area-context';

const App = () => {
  const [state, dispatch] = useTracked();
  const [init, setInit] = useState(false);
  const I = DDS.isTab ? require('./index.tablet') : require('./index.mobile');
  const _onOrientationChange = o => {
    // Currently orientation is locked on tablet.
    /* DDS.checkOrientation();
    setTimeout(() => {
     
      forceUpdate();
    }, 1000); */
  };
  useEffect(() => {
    Orientation.addOrientationListener(_onOrientationChange);
    eSubscribeEvent(eDispatchAction, type => {
      dispatch(type);
    });
    return () => {
      eUnSubscribeEvent(eDispatchAction, type => {
        dispatch(type);
      });
      Orientation.removeOrientationListener(_onOrientationChange);
    };
  }, []);

  useEffect(() => {
    DDS.isTab ? Orientation.lockToLandscape() : Orientation.lockToPortrait();
  }, []);

  const startSyncer = async () => {
    let user = await db.user.get();
    if (user) {
      db.ev.subscribe('sync',async () => {
        dispatch({type: ACTIONS.SYNCING, syncing:true});
        await db.sync();
        let u = await db.user.get();
        dispatch({type: ACTIONS.USER, user: u});
        dispatch({type: ACTIONS.ALL});
        dispatch({type: ACTIONS.SYNCING, syncing:false});
      })
    }
  }

  useEffect(() => {
    eSubscribeEvent(eStartSyncer, startSyncer)

    return () => {
      eUnSubscribeEvent(eStartSyncer,startSyncer)
    }
  })

  useEffect(() => {
    Initialize().then(() => {
      db.init().then(async () => {
        let user = await db.user.get();
        startSyncer();
        dispatch({type: ACTIONS.USER, user: user});
        setInit(true);
      });
    });
  }, []);

  async function Initialize(colors = colors) {
    let newColors = await getColorScheme(colors);

    let s;
    try {
      s = await MMKV.getStringAsync('settings');
    } catch (e) {}
    if (typeof s !== 'string') {
      s = defaultState.settings;
      s = JSON.stringify(s);
      s.fontScale = 1;

      await MMKV.setStringAsync('settings', s);

      dispatch({type: ACTIONS.SETTINGS, s});
    } else {
      s = JSON.parse(s);
      if (s.fontScale) {
        scale.fontScale = s.fontScale;
      } else {
        scale.fontScale = 1;
      }
      updateSize();
      dispatch({type: ACTIONS.SETTINGS, settings: {...s}});
    }

    dispatch({type: ACTIONS.THEME, colors: newColors});
  }

  if (!init) {
    return <></>;
  }
  return (
    <SafeAreaProvider>
      <>
        <I.Initialize />
        <Loading />
      </>
    </SafeAreaProvider>
  );
};

export default App;