import React, { useState } from 'react';

import {
  Accordion, AccordionSummary, AccordionDetails, makeStyles, Typography, FormControlLabel, Checkbox,
} from '@material-ui/core';
import ExpandMoreIcon from '@material-ui/icons/ExpandMore';
import { useTranslation, useTranslationKeys } from '../common/components/LocalizationProvider';
import EditItemView from './components/EditItemView';
import { prefixString, unprefixString } from '../common/util/stringUtils';
import SelectField from '../common/components/SelectField';
import SettingsMenu from './components/SettingsMenu';

const useStyles = makeStyles(() => ({
  details: {
    flexDirection: 'column',
  },
}));

const NotificationPage = () => {
  const classes = useStyles();
  const t = useTranslation();

  const [item, setItem] = useState();

  const alarms = useTranslationKeys((it) => it.startsWith('alarm')).map((it) => ({
    key: unprefixString('alarm', it),
    name: t(it),
  }));

  const validate = () => item && item.type && item.notificators;

  return (
    <EditItemView
      endpoint="notifications"
      item={item}
      setItem={setItem}
      validate={validate}
      menu={<SettingsMenu />}
      breadcrumbs={['settingsTitle', 'sharedNotification']}
    >
      {item && (
        <>
          <Accordion defaultExpanded>
            <AccordionSummary expandIcon={<ExpandMoreIcon />}>
              <Typography variant="subtitle1">
                {t('sharedRequired')}
              </Typography>
            </AccordionSummary>
            <AccordionDetails className={classes.details}>
              <SelectField
                margin="normal"
                value={item.type}
                emptyValue={null}
                onChange={(e) => setItem({ ...item, type: e.target.value })}
                endpoint="/api/notifications/types"
                keyGetter={(it) => it.type}
                titleGetter={(it) => t(prefixString('event', it.type))}
                label={t('sharedType')}
                variant="filled"
              />
              <SelectField
                multiple
                margin="normal"
                value={item.notificators ? item.notificators.split(/[, ]+/) : []}
                onChange={(e) => setItem({ ...item, notificators: e.target.value.join() })}
                endpoint="/api/notifications/notificators"
                keyGetter={(it) => it.type}
                titleGetter={(it) => t(prefixString('notificator', it.type))}
                label={t('notificationNotificators')}
                variant="filled"
              />
              {(!item.type || item.type === 'alarm') && (
                <SelectField
                  multiple
                  margin="normal"
                  value={item.attributes && item.attributes.alarms ? item.attributes.alarms.split(/[, ]+/) : []}
                  onChange={(e) => setItem({ ...item, attributes: { ...item.attributes, alarms: e.target.value.join() } })}
                  data={alarms}
                  keyGetter={(it) => it.key}
                  label={t('sharedAlarms')}
                  variant="filled"
                />
              )}
              <FormControlLabel
                control={(
                  <Checkbox
                    checked={item.always}
                    onChange={(event) => setItem({ ...item, always: event.target.checked })}
                  />
                )}
                label={t('notificationAlways')}
              />
            </AccordionDetails>
          </Accordion>
        </>
      )}
    </EditItemView>
  );
};

export default NotificationPage;