resources/js/helpers/AosBaseRomContext.js

   1 import CRC32 from 'crc-32';
   2 import localforage from 'localforage';
   3 import PropTypes from 'prop-types';
   4 import React from 'react';
   5 import toastr from 'toastr';
   6
   7 import i18n from '../i18n';
   8
   9 const AosBaseRomContext = React.createContext(null);
  10
  11 const AosBaseRomProvider = ({ children }) => {
  12         const [rom, setRom] = React.useState(null);
  13
  14         const setRomCallback = React.useCallback(buffer => {
  15                 if (buffer) {
  16                         const crc = CRC32.buf(new Uint8Array(buffer));
  17                         if (crc === 0x35536183) {
  18                                 setRom(buffer);
  19                                 localforage.setItem('aosBaseRom', buffer);
  20                                 toastr.success(i18n.t('aos.baseRomSet'));
  21                         } else {
  22                                 toastr.error(i18n.t('aos.baseRomInvalid'));
  23                         }
  24                 } else {
  25                         setRom(null);
  26                         localforage.removeItem('aosBaseRom');
  27                         toastr.success(i18n.t('aos.baseRomRemoved'));
  28                 }
  29         }, [setRom]);
  30
  31         React.useEffect(async () => {
  32                 const stored = await localforage.getItem('aosBaseRom');
  33                 if (stored) {
  34                         const crc = CRC32.buf(new Uint8Array(stored));
  35                         if (crc == 0x35536183) {
  36                                 setRom(stored);
  37                         }
  38                 }
  39         }, []);
  40
  41         return <AosBaseRomContext.Provider value={{ rom, setRom: setRomCallback }}>
  42                 {children}
  43         </AosBaseRomContext.Provider>;
  44 };
  45
  46 AosBaseRomProvider.propTypes = {
  47         children: PropTypes.node,
  48 };
  49
  50 export const useAosBaseRom = () => React.useContext(AosBaseRomContext);
  51
  52 export default AosBaseRomProvider;