import { FC, useState } from 'react';
import { ValidateFieldsError } from 'async-validator';

import { useSnackbar } from 'notistack';

import { Box, Button, Checkbox, MenuItem, Grid, Typography, Divider, InputAdornment } from '@mui/material';

import WarningIcon from '@mui/icons-material/Warning';
import CancelIcon from '@mui/icons-material/Cancel';
import PowerSettingsNewIcon from '@mui/icons-material/PowerSettingsNew';

import { validate } from 'validators';
import { createSettingsValidator } from './validators';

import {
  SectionContent,
  FormLoader,
  BlockFormControlLabel,
  ValidatedTextField,
  ButtonRow,
  MessageBox,
  BlockNavigation
} from 'components';
import { numberValue, extractErrorMessage, updateValueDirty, useRest } from 'utils';

import * as EMSESP from './api';
import { Settings, BOARD_PROFILES } from './types';

import { useI18nContext } from 'i18n/i18n-react';
import RestartMonitor from 'framework/system/RestartMonitor';

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

const SettingsApplication: FC = () => {
  const {
    loadData,
    saveData,
    saving,
    setData,
    data,
    origData,
    dirtyFlags,
    setDirtyFlags,
    blocker,
    errorMessage,
    restartNeeded
  } = useRest<Settings>({
    read: EMSESP.readSettings,
    update: EMSESP.writeSettings
  });
  const [restarting, setRestarting] = useState<boolean>();

  const { LL } = useI18nContext();

  const { enqueueSnackbar } = useSnackbar();

  const updateFormValue = updateValueDirty(origData, dirtyFlags, setDirtyFlags, setData);

  const [fieldErrors, setFieldErrors] = useState<ValidateFieldsError>();
  const [processingBoard, setProcessingBoard] = useState<boolean>(false);

  const updateBoardProfile = async (board_profile: string) => {
    setProcessingBoard(true);
    try {
      const response = await EMSESP.getBoardProfile({ board_profile: board_profile });
      if (data) {
        setData({
          ...data,
          board_profile: board_profile,
          led_gpio: response.data.led_gpio,
          dallas_gpio: response.data.dallas_gpio,
          rx_gpio: response.data.rx_gpio,
          tx_gpio: response.data.tx_gpio,
          pbutton_gpio: response.data.pbutton_gpio,
          phy_type: response.data.phy_type,
          eth_power: response.data.eth_power,
          eth_phy_addr: response.data.eth_phy_addr,
          eth_clock_mode: response.data.eth_clock_mode
        });
      }
    } catch (error) {
      enqueueSnackbar(extractErrorMessage(error, LL.PROBLEM_UPDATING()), { variant: 'error' });
    } finally {
      setProcessingBoard(false);
    }
  };

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

    const validateAndSubmit = async () => {
      try {
        setFieldErrors(undefined);
        await validate(createSettingsValidator(data), data);
        saveData();
      } catch (errors: any) {
        setFieldErrors(errors);
      }
    };

    const changeBoardProfile = (event: React.ChangeEvent<HTMLInputElement>) => {
      const board_profile = event.target.value;
      if (board_profile === 'CUSTOM') {
        setData({
          ...data,
          board_profile: board_profile
        });
      } else {
        updateBoardProfile(board_profile);
      }
    };

    const restart = async () => {
      validateAndSubmit();
      try {
        await EMSESP.restart();
        setRestarting(true);
      } catch (error) {
        enqueueSnackbar(extractErrorMessage(error, LL.PROBLEM_UPDATING()), { variant: 'error' });
      }
    };

    return (
      <>
        <Typography sx={{ pt: 2 }} variant="h6" color="primary">
          {LL.INTERFACE_BOARD_PROFILE()}
        </Typography>
        <Box color="warning.main">
          <Typography variant="body2">{LL.BOARD_PROFILE_TEXT()}</Typography>
        </Box>
        <ValidatedTextField
          name="board_profile"
          label={LL.BOARD_PROFILE()}
          value={data.board_profile}
          disabled={processingBoard}
          fullWidth
          variant="outlined"
          onChange={changeBoardProfile}
          margin="normal"
          select
        >
          {boardProfileSelectItems()}
          <Divider />
          <MenuItem key={'CUSTOM'} value={'CUSTOM'}>
            {LL.CUSTOM()}&hellip;
          </MenuItem>
        </ValidatedTextField>
        {data.board_profile === 'CUSTOM' && (
          <>
            <Grid
              container
              spacing={1}
              sx={{ pt: 1 }}
              direction="row"
              justifyContent="flex-start"
              alignItems="flex-start"
            >
              <Grid item xs={6} sm={4}>
                <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"
                  disabled={saving}
                />
              </Grid>
              <Grid item xs={6} sm={4}>
                <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"
                  disabled={saving}
                />
              </Grid>
              <Grid item xs={6} sm={4}>
                <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"
                  disabled={saving}
                />
              </Grid>
              <Grid item xs={6} sm={4}>
                <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"
                  disabled={saving}
                />
              </Grid>
              <Grid item xs={6} sm={4}>
                <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"
                  disabled={saving}
                />
              </Grid>
              <Grid item xs={6} sm={4}>
                <ValidatedTextField
                  name="phy_type"
                  label={LL.PHY_TYPE()}
                  disabled={saving}
                  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>
                </ValidatedTextField>
              </Grid>
            </Grid>
            {data.phy_type !== 0 && (
              <Grid
                container
                spacing={1}
                sx={{ pt: 1 }}
                direction="row"
                justifyContent="flex-start"
                alignItems="flex-start"
              >
                <Grid item xs={6} sm={4}>
                  <ValidatedTextField
                    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"
                    disabled={saving}
                  />
                </Grid>
                <Grid item xs={6} sm={4}>
                  <ValidatedTextField
                    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"
                    disabled={saving}
                  />
                </Grid>
                <Grid item xs={6} sm={4}>
                  <ValidatedTextField
                    name="eth_clock_mode"
                    label="PHY Clk"
                    disabled={saving}
                    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>
                  </ValidatedTextField>
                </Grid>
              </Grid>
            )}
          </>
        )}
        <Typography sx={{ pt: 2 }} variant="h6" color="primary">
          {LL.SETTINGS_OF(LL.EMS_BUS(0))}
        </Typography>
        <Grid container spacing={1} direction="row" justifyContent="flex-start" alignItems="flex-start">
          <Grid item xs={6}>
            <ValidatedTextField
              name="tx_mode"
              label={LL.TX_MODE()}
              disabled={saving}
              value={data.tx_mode}
              fullWidth
              variant="outlined"
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={1}>EMS</MenuItem>
              <MenuItem value={2}>EMS+</MenuItem>
              <MenuItem value={3}>HT3</MenuItem>
              <MenuItem value={4}>{LL.HARDWARE()}</MenuItem>
            </ValidatedTextField>
          </Grid>
          <Grid item xs={6}>
            <ValidatedTextField
              name="ems_bus_id"
              label={LL.ID_OF(LL.EMS_BUS(1))}
              disabled={saving}
              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>
            </ValidatedTextField>
          </Grid>
        </Grid>
        <Typography sx={{ pt: 2 }} variant="h6" color="primary">
          {LL.GENERAL_OPTIONS()}
        </Typography>
        <Box
          sx={{
            '& .MuiTextField-root': { width: '25ch' }
          }}
        >
          <ValidatedTextField
            name="locale"
            label={LL.LANGUAGE_ENTITIES()}
            disabled={saving}
            value={data.locale}
            variant="outlined"
            onChange={updateFormValue}
            margin="normal"
            size="small"
            select
          >
            <MenuItem value="en">English (EN)</MenuItem>
            <Divider />
            <MenuItem value="de">Deutsch (DE)</MenuItem>
            <MenuItem value="fr">Français (FR)</MenuItem>
            <MenuItem value="nl">Nederlands (NL)</MenuItem>
            <MenuItem value="no">Norsk (NO)</MenuItem>
            <MenuItem value="pl">Polski (PL)</MenuItem>
            <MenuItem value="sv">Svenska (SV)</MenuItem>
          </ValidatedTextField>
        </Box>
        {data.led_gpio !== 0 && (
          <BlockFormControlLabel
            control={<Checkbox checked={data.hide_led} onChange={updateFormValue} name="hide_led" />}
            label={LL.HIDE_LED()}
            disabled={saving}
          />
        )}
        <BlockFormControlLabel
          control={<Checkbox checked={data.telnet_enabled} onChange={updateFormValue} name="telnet_enabled" />}
          label={LL.ENABLE_TELNET()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={<Checkbox checked={data.analog_enabled} onChange={updateFormValue} name="analog_enabled" />}
          label={LL.ENABLE_ANALOG()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={<Checkbox checked={data.fahrenheit} onChange={updateFormValue} name="fahrenheit" />}
          label={LL.CONVERT_FAHRENHEIT()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={<Checkbox checked={data.notoken_api} onChange={updateFormValue} name="notoken_api" />}
          label={LL.BYPASS_TOKEN()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={<Checkbox checked={data.readonly_mode} onChange={updateFormValue} name="readonly_mode" />}
          label={LL.READONLY()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={<Checkbox checked={data.low_clock} onChange={updateFormValue} name="low_clock" />}
          label={LL.UNDERCLOCK_CPU()}
          disabled={saving}
        />
        <Grid container spacing={0} direction="row" justifyContent="flex-start" alignItems="flex-start">
          <BlockFormControlLabel
            control={<Checkbox checked={data.shower_timer} onChange={updateFormValue} name="shower_timer" />}
            label={LL.ENABLE_SHOWER_TIMER()}
            disabled={saving}
          />
          <BlockFormControlLabel
            sx={{ pb: 2 }}
            control={<Checkbox checked={data.shower_alert} onChange={updateFormValue} name="shower_alert" />}
            label={LL.ENABLE_SHOWER_ALERT()}
            disabled={!data.shower_timer}
          />
          {data.shower_alert && (
            <>
              <Grid item sx={{ pr: 1, pb: 2 }}>
                <ValidatedTextField
                  fieldErrors={fieldErrors}
                  name="shower_alert_trigger"
                  label={LL.TRIGGER_TIME()}
                  InputProps={{
                    endAdornment: <InputAdornment position="end">{LL.MINUTES()}</InputAdornment>
                  }}
                  variant="outlined"
                  value={numberValue(data.shower_alert_trigger)}
                  type="number"
                  onChange={updateFormValue}
                  size="small"
                  disabled={!data.shower_timer}
                />
              </Grid>
              <Grid item sx={{ pb: 3 }}>
                <ValidatedTextField
                  fieldErrors={fieldErrors}
                  name="shower_alert_coldshot"
                  label={LL.COLD_SHOT_DURATION()}
                  InputProps={{
                    endAdornment: <InputAdornment position="end">{LL.SECONDS()}</InputAdornment>
                  }}
                  variant="outlined"
                  value={numberValue(data.shower_alert_coldshot)}
                  type="number"
                  onChange={updateFormValue}
                  size="small"
                  disabled={!data.shower_timer}
                />
              </Grid>
            </>
          )}
        </Grid>
        <Typography variant="h6" color="primary">
          {LL.FORMATTING_OPTIONS()}
        </Typography>
        <Grid container spacing={1} direction="row" justifyContent="flex-start" alignItems="flex-start">
          <Grid item xs={6} sm={4}>
            <ValidatedTextField
              name="bool_dashboard"
              label={LL.BOOLEAN_FORMAT_DASHBOARD()}
              value={data.bool_dashboard}
              fullWidth
              variant="outlined"
              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>
            </ValidatedTextField>
          </Grid>
          <Grid item xs={6} sm={4}>
            <ValidatedTextField
              name="bool_format"
              label={LL.BOOLEAN_FORMAT_API()}
              value={data.bool_format}
              fullWidth
              variant="outlined"
              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>
            </ValidatedTextField>
          </Grid>
          <Grid item xs={6} sm={4}>
            <ValidatedTextField
              name="enum_format"
              label={LL.ENUM_FORMAT()}
              value={data.enum_format}
              fullWidth
              variant="outlined"
              onChange={updateFormValue}
              margin="normal"
              select
            >
              <MenuItem value={1}>{LL.VALUE(1)}</MenuItem>
              <MenuItem value={2}>{LL.INDEX()}</MenuItem>
            </ValidatedTextField>
          </Grid>
        </Grid>
        {data.dallas_gpio !== 0 && (
          <>
            <Typography sx={{ pt: 2 }} variant="h6" color="primary">
              {LL.TEMP_SENSORS()}
            </Typography>
            <BlockFormControlLabel
              control={<Checkbox checked={data.dallas_parasite} onChange={updateFormValue} name="dallas_parasite" />}
              label={LL.ENABLE_PARASITE()}
              disabled={saving}
            />
          </>
        )}
        <Typography sx={{ pt: 2 }} variant="h6" color="primary">
          {LL.LOGGING()}
        </Typography>
        <BlockFormControlLabel
          control={<Checkbox checked={data.trace_raw} onChange={updateFormValue} name="trace_raw" />}
          label={LL.LOG_HEX()}
          disabled={saving}
        />
        <BlockFormControlLabel
          control={
            <Checkbox
              checked={data.syslog_enabled}
              onChange={updateFormValue}
              name="syslog_enabled"
              disabled={saving}
            />
          }
          label={LL.ENABLE_SYSLOG()}
        />
        {data.syslog_enabled && (
          <Grid container spacing={1} direction="row" justifyContent="flex-start" alignItems="flex-start">
            <Grid item xs={4}>
              <ValidatedTextField
                fieldErrors={fieldErrors}
                name="syslog_host"
                label="Host"
                fullWidth
                variant="outlined"
                value={data.syslog_host}
                onChange={updateFormValue}
                margin="normal"
                disabled={saving}
              />
            </Grid>
            <Grid item xs={4}>
              <ValidatedTextField
                fieldErrors={fieldErrors}
                name="syslog_port"
                label="Port"
                fullWidth
                variant="outlined"
                value={numberValue(data.syslog_port)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
                disabled={saving}
              />
            </Grid>
            <Grid item xs={4}>
              <ValidatedTextField
                name="syslog_level"
                label={LL.LOG_LEVEL()}
                value={data.syslog_level}
                fullWidth
                variant="outlined"
                onChange={updateFormValue}
                margin="normal"
                select
                disabled={saving}
              >
                <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>
              </ValidatedTextField>
            </Grid>
            <Grid item xs={4}>
              <ValidatedTextField
                fieldErrors={fieldErrors}
                name="syslog_mark_interval"
                label={LL.MARK_INTERVAL()}
                InputProps={{
                  endAdornment: <InputAdornment position="end">{LL.SECONDS()}</InputAdornment>
                }}
                fullWidth
                variant="outlined"
                value={numberValue(data.syslog_mark_interval)}
                type="number"
                onChange={updateFormValue}
                margin="normal"
                disabled={saving}
              />
            </Grid>
          </Grid>
        )}
        {restartNeeded && (
          <MessageBox my={2} level="warning" message={LL.RESTART_TEXT()}>
            <Button startIcon={<PowerSettingsNewIcon />} variant="contained" color="error" onClick={restart}>
              {LL.RESTART()}
            </Button>
          </MessageBox>
        )}

        {!restartNeeded && dirtyFlags && dirtyFlags.length !== 0 && (
          <ButtonRow>
            <Button
              startIcon={<CancelIcon />}
              disabled={saving}
              variant="outlined"
              color="primary"
              type="submit"
              onClick={() => loadData()}
            >
              {LL.CANCEL()}
            </Button>
            <Button
              startIcon={<WarningIcon color="warning" />}
              disabled={saving}
              variant="contained"
              color="info"
              type="submit"
              onClick={validateAndSubmit}
            >
              {LL.APPLY_CHANGES(dirtyFlags.length)}
            </Button>
          </ButtonRow>
        )}
      </>
    );
  };

  return (
    <SectionContent title={LL.APPLICATION_SETTINGS()} titleGutter>
      {blocker ? <BlockNavigation blocker={blocker} /> : null}
      {restarting ? <RestartMonitor /> : content()}
    </SectionContent>
  );
};

export default SettingsApplication;