import {useContext} from 'react';
import {PermissionsAndroid} from 'react-native';
import {Dirs, FileSystem} from 'react-native-file-access';
import {SnackbarContext} from './App';

export const useWrite = () => {
  const {toast} = useContext(SnackbarContext);

  return {
    write: async (name: string, data: string) => {
      const filePath = `${Dirs.DocumentDir}/${name}`;
      const permission = async () => {
        const granted = await PermissionsAndroid.request(
          PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
        );
        return granted === PermissionsAndroid.RESULTS.GRANTED;
      };
      const granted = await permission();
      if (!granted) return;
      await FileSystem.writeFile(filePath, data);
      if (!FileSystem.exists(filePath)) return;
      await FileSystem.cpExternal(filePath, name, 'downloads');
      toast(`Saved "${name}" in your downloads folder.`, 6000);
    },
  };
};