import { useCallback, useMemo, useState } from 'react';
import { toast } from 'react-toastify';

import CancelIcon from '@mui/icons-material/Cancel';
import PowerSettingsNewIcon from '@mui/icons-material/PowerSettingsNew';
import WarningIcon from '@mui/icons-material/Warning';
import {
  Box,
  Button,
  Checkbox,
  Divider,
  Grid,
  InputAdornment,
  MenuItem,
  TextField,
  Typography
} from '@mui/material';

import { readSystemStatus } from 'api/system';

import { useRequest } from 'alova/client';
import SystemMonitor from 'app/status/SystemMonitor';
import type { ValidateFieldsError } from 'async-validator';
import {
  BlockFormControlLabel,
  BlockNavigation,
  ButtonRow,
  FormLoader,
  MessageBox,
  SectionContent,
  ValidatedTextField,
  useLayoutTitle
} from 'components';
import { useI18nContext } from 'i18n/i18n-react';
import { numberValue, updateValueDirty, useRest } from 'utils';
import { validate } from 'validators';

import { API, getBoardProfile, readSettings, writeSettings } from '../../api/app';
import { BOARD_PROFILES } from '../main/types';
import type { APIcall, Settings } from '../main/types';
import { createSettingsValidator } from '../main/validators';

export function boardProfileSelectItems() {
  return Object.keys(BOARD_PROFILES).map((code) => (
    <MenuItem key={code} value={code}>
      {BOARD_PROFILES[code]}
    </MenuItem>
  ));
}

const ApplicationSettings = () => {
  const { data: hardwareData } = useRequest(readSystemStatus);

  const {
    loadData,
    saveData,
    updateDataValue,
    data,
    origData,
    dirtyFlags,
    setDirtyFlags,
    blocker,
    errorMessage,
    restartNeeded
  } = useRest<Settings>({
    read: readSettings,
    update: writeSettings
  });

  const [restarting, setRestarting] = useState<boolean>();

  const { LL } = useI18nContext();

  const updateFormValue = updateValueDirty(
    origData as unknown as Record<string, unknown>,
    dirtyFlags,
    setDirtyFlags,
    updateDataValue as (value: unknown) => void
  );

  const [fieldErrors, setFieldErrors] = useState<ValidateFieldsError>();

  const { send: sendAPI } = useRequest((data: APIcall) => API(data), {
    immediate: false
  });

  const { loading: processingBoard, send: readBoardProfile } = useRequest(
    (boardProfile: string) => getBoardProfile(boardProfile),
    {
      immediate: false
    }
  ).onSuccess((event) => {
    const response = event.data as Settings;
    updateDataValue({
      ...data,
      board_profile: response.board_profile,
      led_gpio: response.led_gpio,
      dallas_gpio: response.dallas_gpio,
      rx_gpio: response.rx_gpio,
      tx_gpio: response.tx_gpio,
      pbutton_gpio: response.pbutton_gpio,
      phy_type: response.phy_type,
      eth_power: response.eth_power,
      eth_phy_addr: response.eth_phy_addr,
      eth_clock_mode: response.eth_clock_mode
    });
  });

  // Memoized input props to prevent recreation on every render
  const SecondsInputProps = useMemo(
    () => ({
      endAdornment: <InputAdornment position="end">{LL.SECONDS()}</InputAdornment>
    }),
    [LL]
  );

  const MinutesInputProps = useMemo(
    () => ({
      endAdornment: <InputAdornment position="end">{LL.MINUTES()}</InputAdornment>
    }),
    [LL]
  );

  const HoursInputProps = useMemo(
    () => ({
      endAdornment: <InputAdornment position="end">{LL.HOURS()}</InputAdornment>
    }),
    [LL]
  );

  const doRestart = useCallback(async () => {
    setRestarting(true);
    await sendAPI({ device: 'system', cmd: 'restart', id: 0 }).catch(
      (error: Error) => {
        toast.error(error.message);
      }
    );
  }, [sendAPI]);

  const updateBoardProfile = useCallback(
    async (board_profile: string) => {
      await readBoardProfile(board_profile).catch((error: Error) => {
        toast.error(error.message);
      });
    },
    [readBoardProfile]
  );

  useLayoutTitle(LL.APPLICATION());

  const validateAndSubmit = useCallback(async () => {
    try {
      setFieldErrors(undefined);
      await validate(createSettingsValidator(data), data);
    } catch (error) {
      setFieldErrors(error as ValidateFieldsError);
    } finally {
      await saveData();
    }
  }, [data, saveData]);

  const changeBoardProfile = useCallback(
    (event: React.ChangeEvent<HTMLInputElement>) => {
      const boardProfile = event.target.value;
      updateFormValue(event);
      if (boardProfile === 'CUSTOM') {
        updateDataValue({
          ...data,
          board_profile: boardProfile
        });
      } else {
        void updateBoardProfile(boardProfile);
      }
    },
    [data, updateBoardProfile, updateFormValue, updateDataValue]
  );

  const restart = useCallback(async () => {
    await validateAndSubmit();
    await doRestart();
  }, [validateAndSubmit, doRestart]);

  // Memoize board profile select items to prevent recreation
  const boardProfileItems = useMemo(() => boardProfileSelectItems(), []);

  const content = () => {
    if (!data || !hardwareData) {
      return <FormLoader onRetry={loadData} errorMessage={errorMessage || ''} />;
    }

    return (
      <>
        <Typography sx={{ pb: 1 }} variant="h6" color="primary">
          {LL.SERVICES()}
        </Typography>
        <Typography color="secondary">API</Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.notoken_api}
              onChange={updateFormValue}
              name="notoken_api"
            />
          }
          label={LL.BYPASS_TOKEN()}
        />
        <Typography color="secondary">Console</Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.telnet_enabled}
              onChange={updateFormValue}
              name="telnet_enabled"
            />
          }
          label={LL.ENABLE_TELNET()}
        />
        <Typography color="secondary">Modbus</Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.modbus_enabled}
              onChange={updateFormValue}
              name="modbus_enabled"
              disabled={!hardwareData.psram}
            />
          }
          label={
            <Typography color={!hardwareData.psram ? 'grey' : 'default'}>
              {LL.ENABLE_MODBUS()}
              {!hardwareData.psram && (
                <Typography variant="caption">
                  &nbsp; &#40;{LL.IS_REQUIRED('PSRAM')}&#41;
                </Typography>
              )}
            </Typography>
          }
        />
        {data.modbus_enabled && (
          <Grid container spacing={2} rowSpacing={0}>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="modbus_max_clients"
                label={LL.AP_MAX_CLIENTS()}
                variant="outlined"
                value={numberValue(data.modbus_max_clients)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="modbus_port"
                label="Port"
                variant="outlined"
                value={numberValue(data.modbus_port)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="modbus_timeout"
                label="Timeout"
                slotProps={{
                  input: SecondsInputProps
                }}
                variant="outlined"
                value={numberValue(data.modbus_timeout)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
          </Grid>
        )}
        <Typography color="secondary">Syslog</Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.syslog_enabled}
              onChange={updateFormValue}
              name="syslog_enabled"
            />
          }
          label={LL.ENABLE_SYSLOG()}
        />
        {data.syslog_enabled && (
          <Grid container spacing={2} rowSpacing={0}>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="syslog_host"
                label="Host"
                variant="outlined"
                value={data.syslog_host}
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="syslog_port"
                label="Port"
                variant="outlined"
                value={numberValue(data.syslog_port)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
            <Grid>
              <TextField
                name="syslog_level"
                label={LL.LOG_LEVEL()}
                value={data.syslog_level}
                fullWidth
                variant="outlined"
                onChange={updateFormValue}
                margin="normal"
                select
              >
                <MenuItem value={-1}>OFF</MenuItem>
                <MenuItem value={3}>ERR</MenuItem>
                <MenuItem value={5}>NOTICE</MenuItem>
                <MenuItem value={6}>INFO</MenuItem>
                <MenuItem value={7}>DEBUG</MenuItem>
                <MenuItem value={9}>ALL</MenuItem>
              </TextField>
            </Grid>
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="syslog_mark_interval"
                label={LL.MARK_INTERVAL()}
                slotProps={{
                  input: SecondsInputProps
                }}
                variant="outlined"
                value={numberValue(data.syslog_mark_interval)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
              />
            </Grid>
          </Grid>
        )}
        <Typography sx={{ pb: 1, pt: 2 }} variant="h6" color="primary">
          {LL.SENSORS()}
        </Typography>
        <Typography color="secondary">Analog</Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.analog_enabled}
              onChange={updateFormValue}
              name="analog_enabled"
            />
          }
          label={LL.ENABLE_ANALOG()}
        />
        {data.dallas_gpio !== 0 && (
          <>
            <Typography color="secondary">{LL.TEMPERATURE()}</Typography>
            <BlockFormControlLabel
              control={
                <Checkbox
                  checked={data.dallas_parasite}
                  onChange={updateFormValue}
                  name="dallas_parasite"
                />
              }
              label={LL.ENABLE_PARASITE()}
            />
          </>
        )}

        <Typography sx={{ pb: 1, pt: 2 }} variant="h6" color="primary">
          {LL.FORMATTING_OPTIONS()}
        </Typography>
        <Grid container spacing={2}>
          <Grid size={3}>
            <TextField
              name="locale"
              label={LL.LANGUAGE_ENTITIES()}
              value={data.locale}
              fullWidth
              variant="outlined"
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value="cz">Česky (CZ)</MenuItem>
              <MenuItem value="de">Deutsch (DE)</MenuItem>
              <MenuItem value="en">English (EN)</MenuItem>
              <MenuItem value="fr">Français (FR)</MenuItem>
              <MenuItem value="it">Italiano (IT)</MenuItem>
              <MenuItem value="nl">Nederlands (NL)</MenuItem>
              <MenuItem value="no">Norsk (NO)</MenuItem>
              <MenuItem value="pl">Polski (PL)</MenuItem>
              <MenuItem value="sk">Slovenčina (SK)</MenuItem>
              <MenuItem value="sv">Svenska (SV)</MenuItem>
              <MenuItem value="tr">Türk (TR)</MenuItem>
            </TextField>
          </Grid>
          <Grid size={3}>
            <TextField
              name="bool_dashboard"
              label={LL.BOOLEAN_FORMAT_DASHBOARD()}
              value={data.bool_dashboard}
              variant="outlined"
              fullWidth
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={1}>{LL.ONOFF()}</MenuItem>
              <MenuItem value={2}>{LL.ONOFF_CAP()}</MenuItem>
              <MenuItem value={3}>true/false</MenuItem>
              <MenuItem value={5}>1/0</MenuItem>
            </TextField>
          </Grid>
          <Grid size={3}>
            <TextField
              name="bool_format"
              label={LL.BOOLEAN_FORMAT_API()}
              value={data.bool_format}
              variant="outlined"
              fullWidth
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={1}>{LL.ONOFF()}</MenuItem>
              <MenuItem value={2}>{LL.ONOFF_CAP()}</MenuItem>
              <MenuItem value={3}>&quot;true&quot;/&quot;false&quot;</MenuItem>
              <MenuItem value={4}>true/false</MenuItem>
              <MenuItem value={5}>&quot;1&quot;/&quot;0&quot;</MenuItem>
              <MenuItem value={6}>1/0</MenuItem>
            </TextField>
          </Grid>
          <Grid size={3}>
            <TextField
              name="enum_format"
              label={LL.ENUM_FORMAT()}
              value={data.enum_format}
              variant="outlined"
              fullWidth
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={1}>{LL.VALUE(5)}</MenuItem>
              <MenuItem value={2}>{LL.INDEX()}</MenuItem>
            </TextField>
          </Grid>
        </Grid>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.fahrenheit}
              onChange={updateFormValue}
              name="fahrenheit"
            />
          }
          label={LL.CONVERT_FAHRENHEIT()}
        />
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.trace_raw}
              onChange={updateFormValue}
              name="trace_raw"
            />
          }
          label={LL.LOG_HEX()}
        />

        <Typography sx={{ pb: 1, pt: 2 }} variant="h6" color="primary">
          {LL.SETTINGS_OF(LL.HARDWARE())}
        </Typography>
        <TextField
          name="board_profile"
          label={LL.BOARD_PROFILE()}
          value={data.board_profile}
          disabled={processingBoard || hardwareData.model.startsWith('BBQKees')}
          variant="outlined"
          onChange={changeBoardProfile}
          margin="normal"
          select
        >
          {boardProfileItems}
          <Divider />
          <MenuItem key={'CUSTOM'} value={'CUSTOM'}>
            {LL.CUSTOM()}&hellip;
          </MenuItem>
        </TextField>
        {data.board_profile === 'CUSTOM' && (
          <>
            <Grid container spacing={2} rowSpacing={0}>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="rx_gpio"
                  label={LL.GPIO_OF('Rx')}
                  fullWidth
                  variant="outlined"
                  value={numberValue(data.rx_gpio)}
                  type="number"
                  onChange={updateFormValue}
                  margin="normal"
                />
              </Grid>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="tx_gpio"
                  label={LL.GPIO_OF('Tx')}
                  fullWidth
                  variant="outlined"
                  value={numberValue(data.tx_gpio)}
                  type="number"
                  onChange={updateFormValue}
                  margin="normal"
                />
              </Grid>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="pbutton_gpio"
                  label={LL.GPIO_OF(LL.BUTTON())}
                  fullWidth
                  variant="outlined"
                  value={numberValue(data.pbutton_gpio)}
                  type="number"
                  onChange={updateFormValue}
                  margin="normal"
                />
              </Grid>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="dallas_gpio"
                  label={
                    LL.GPIO_OF(LL.TEMPERATURE()) + ' (0=' + LL.DISABLED(1) + ')'
                  }
                  fullWidth
                  variant="outlined"
                  value={numberValue(data.dallas_gpio)}
                  type="number"
                  onChange={updateFormValue}
                  margin="normal"
                />
              </Grid>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="led_gpio"
                  label={LL.GPIO_OF('LED') + ' (0=' + LL.DISABLED(1) + ')'}
                  fullWidth
                  variant="outlined"
                  value={numberValue(data.led_gpio)}
                  type="number"
                  onChange={updateFormValue}
                  margin="normal"
                />
              </Grid>
              {data.led_gpio !== 0 && (
                <Grid>
                  <TextField
                    name="led_type"
                    label={'LED ' + LL.TYPE(0)}
                    value={data.led_type}
                    fullWidth
                    variant="outlined"
                    onChange={updateFormValue}
                    margin="normal"
                    select
                  >
                    <MenuItem value={0}>LED</MenuItem>
                    <MenuItem value={1}>RGB-LED</MenuItem>
                  </TextField>
                </Grid>
              )}
              <Grid>
                <TextField
                  name="phy_type"
                  label={LL.PHY_TYPE()}
                  value={data.phy_type}
                  fullWidth
                  variant="outlined"
                  onChange={updateFormValue}
                  margin="normal"
                  select
                >
                  <MenuItem value={0}>{LL.DISABLED(1)}</MenuItem>
                  <MenuItem value={1}>LAN8720</MenuItem>
                  <MenuItem value={2}>TLK110</MenuItem>
                </TextField>
              </Grid>
            </Grid>
            {data.phy_type !== 0 && (
              <Grid container spacing={2} rowSpacing={0}>
                <Grid>
                  <TextField
                    name="eth_power"
                    label={LL.GPIO_OF('PHY Power') + ' (-1=' + LL.DISABLED(1) + ')'}
                    fullWidth
                    variant="outlined"
                    value={numberValue(data.eth_power)}
                    type="number"
                    onChange={updateFormValue}
                    margin="normal"
                  />
                </Grid>
                <Grid>
                  <TextField
                    name="eth_phy_addr"
                    label={LL.ADDRESS_OF('PHY I²C')}
                    fullWidth
                    variant="outlined"
                    value={numberValue(data.eth_phy_addr)}
                    type="number"
                    onChange={updateFormValue}
                    margin="normal"
                  />
                </Grid>
                <Grid>
                  <TextField
                    name="eth_clock_mode"
                    label="PHY Clk"
                    value={data.eth_clock_mode}
                    fullWidth
                    variant="outlined"
                    onChange={updateFormValue}
                    margin="normal"
                    select
                  >
                    <MenuItem value={0}>GPIO0_IN</MenuItem>
                    <MenuItem value={1}>GPIO0_OUT</MenuItem>
                    <MenuItem value={2}>GPIO16_OUT</MenuItem>
                    <MenuItem value={3}>GPIO17_OUT</MenuItem>
                  </TextField>
                </Grid>
              </Grid>
            )}
          </>
        )}
        <Grid container spacing={2} rowSpacing={0}>
          <Grid>
            <TextField
              name="tx_mode"
              label={LL.TX_MODE()}
              value={data.tx_mode}
              variant="outlined"
              onChange={updateFormValue}
              margin="normal"
              sx={{ width: '15ch' }}
              select
            >
              <MenuItem value={1}>EMS</MenuItem>
              <MenuItem value={2}>EMS+</MenuItem>
              <MenuItem value={3}>HT3</MenuItem>
              <MenuItem value={4}>{LL.HARDWARE()}</MenuItem>
            </TextField>
          </Grid>
          <Grid>
            <TextField
              name="ems_bus_id"
              label={LL.ID_OF(LL.EMS_BUS(0))}
              value={data.ems_bus_id}
              fullWidth
              variant="outlined"
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={0x0a}>Terminal (0x0A)</MenuItem>
              <MenuItem value={0x0b}>Service Key (0x0B)</MenuItem>
              <MenuItem value={0x0d}>Modem (0x0D)</MenuItem>
              <MenuItem value={0x0e}>Converter (0x0E)</MenuItem>
              <MenuItem value={0x0f}>Time Module (0x0F)</MenuItem>
              <MenuItem value={0x48}>Gateway 1 (0x48)</MenuItem>
              <MenuItem value={0x49}>Gateway 2 (0x49)</MenuItem>
              <MenuItem value={0x4a}>Gateway 3 (0x4A)</MenuItem>
              <MenuItem value={0x4b}>Gateway 4 (0x4B)</MenuItem>
              <MenuItem value={0x4c}>Gateway 5 (0x4C)</MenuItem>
              <MenuItem value={0x4d}>Gateway 7 (0x4D)</MenuItem>
            </TextField>
          </Grid>
        </Grid>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.readonly_mode}
              onChange={updateFormValue}
              name="readonly_mode"
            />
          }
          label={LL.READONLY()}
        />
        {data.led_gpio !== 0 && (
          <BlockFormControlLabel
            control={
              <Checkbox
                checked={data.hide_led}
                onChange={updateFormValue}
                name="hide_led"
              />
            }
            label={LL.HIDE_LED()}
          />
        )}
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.low_clock}
              onChange={updateFormValue}
              name="low_clock"
            />
          }
          label={LL.UNDERCLOCK_CPU()}
        />

        <Typography sx={{ pb: 1, pt: 2 }} variant="h6" color="primary">
          {LL.SPECIAL_FUNCTIONS()}
        </Typography>
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.developer_mode}
              onChange={updateFormValue}
              name="developer_mode"
            />
          }
          label={LL.DEVELOPER_MODE()}
        />
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.boiler_heatingoff}
              onChange={updateFormValue}
              name="boiler_heatingoff"
            />
          }
          label={LL.HEATINGOFF()}
        />
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.remote_timeout_en}
              onChange={updateFormValue}
              name="remote_timeout_en"
            />
          }
          label={LL.REMOTE_TIMEOUT_EN()}
        />
        {data.remote_timeout_en && (
          <Box mt={2}>
            <ValidatedTextField
              fieldErrors={fieldErrors || {}}
              name="remote_timeout"
              label={LL.REMOTE_TIMEOUT()}
              slotProps={{
                input: HoursInputProps
              }}
              variant="outlined"
              value={numberValue(data.remote_timeout)}
              type="number"
              onChange={updateFormValue}
            />
          </Box>
        )}
        <Grid container spacing={2} rowSpacing={0}>
          <BlockFormControlLabel
            control={
              <Checkbox
                checked={data.shower_timer}
                onChange={updateFormValue}
                name="shower_timer"
              />
            }
            label={LL.ENABLE_SHOWER_TIMER()}
          />
          <BlockFormControlLabel
            control={
              <Checkbox
                checked={data.shower_alert}
                onChange={updateFormValue}
                name="shower_alert"
              />
            }
            label={LL.ENABLE_SHOWER_ALERT()}
            disabled={!data.shower_timer}
          />
        </Grid>
        <Grid container spacing={2} sx={{ pt: 2 }}>
          {data.shower_timer && (
            <Grid>
              <ValidatedTextField
                fieldErrors={fieldErrors || {}}
                name="shower_min_duration"
                label={LL.MIN_DURATION()}
                slotProps={{
                  input: SecondsInputProps
                }}
                variant="outlined"
                value={numberValue(data.shower_min_duration)}
                fullWidth
                type="number"
                onChange={updateFormValue}
              />
            </Grid>
          )}
          {data.shower_alert && (
            <>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="shower_alert_trigger"
                  label={LL.TRIGGER_TIME()}
                  slotProps={{
                    input: MinutesInputProps
                  }}
                  variant="outlined"
                  value={numberValue(data.shower_alert_trigger)}
                  fullWidth
                  type="number"
                  onChange={updateFormValue}
                  disabled={!data.shower_timer}
                />
              </Grid>
              <Grid>
                <ValidatedTextField
                  fieldErrors={fieldErrors || {}}
                  name="shower_alert_coldshot"
                  label={LL.COLD_SHOT_DURATION()}
                  slotProps={{
                    input: SecondsInputProps
                  }}
                  variant="outlined"
                  value={numberValue(data.shower_alert_coldshot)}
                  fullWidth
                  type="number"
                  onChange={updateFormValue}
                  disabled={!data.shower_timer}
                />
              </Grid>
            </>
          )}
        </Grid>

        {restartNeeded && (
          <MessageBox my={2} level="warning" message={LL.RESTART_TEXT(0)}>
            <Button
              startIcon={<PowerSettingsNewIcon />}
              variant="contained"
              color="error"
              onClick={restart}
            >
              {LL.RESTART()}
            </Button>
          </MessageBox>
        )}
        {!restartNeeded && dirtyFlags && dirtyFlags.length !== 0 && (
          <ButtonRow>
            <Button
              startIcon={<CancelIcon />}
              variant="outlined"
              color="secondary"
              type="submit"
              onClick={loadData}
            >
              {LL.CANCEL()}
            </Button>
            <Button
              startIcon={<WarningIcon color="warning" />}
              variant="contained"
              color="info"
              type="submit"
              onClick={validateAndSubmit}
            >
              {LL.APPLY_CHANGES(dirtyFlags.length)}
            </Button>
          </ButtonRow>
        )}
      </>
    );
  };

  return (
    <SectionContent>
      {blocker ? <BlockNavigation blocker={blocker} /> : null}
      {restarting ? <SystemMonitor /> : content()}
    </SectionContent>
  );
};

export default ApplicationSettings;