import { PureComponent, createRef } from 'react';
import Box from '@mui/material/Box';
import TextField from '@mui/material/TextField';
import InputAdornment from '@mui/material/InputAdornment';
import CircularProgress from '@mui/material/CircularProgress';
import BackendError from '../../components/BackendError';
import SearchIcon from '@mui/icons-material/Search';
import IconButton from '@mui/material/IconButton';
import ClearIcon from '@mui/icons-material/Clear';
import FillSpace from 'dashgui/FillSpace';
import { PanelTile, PanelTileGrid } from 'dashgui/panels';
import { backendErrorFrom } from '../../utils/backendError';
import { notifyError } from '../../utils/notify';
import { setLastArticleSku } from '../../automats';
import brandAutomat from '../../automats/brandAutomat';
import {
  ArtikelMarke,
  ArtikelMarkeNew,
} from '../../components/brand';
import {
  PURPLE_PANEL,
} from '../../colors';

class ArtikelMarkenSearchField extends PureComponent {
  constructor(props) {
    super(props);
    this.state = { input: '' };
  }

  onInputChange(input) {
    this.setState({ input });
  }

  clearInput() {
    this.setState({ input: '' });
  }
  render() {
    const { inputRef } = this.props;

    return (
      <Box
        ref={inputRef}
        sx={{
          mb: 2,
          display: 'flex',
          gap: 1.5,
          alignItems: 'center',
          minHeight: 40,
        }}
      >
        <TextField
          sx={{ maxWidth: 520, flexGrow: 1 }}
          autoFocus
          autoComplete="off"
          value={this.state.input}
          onChange={(e) => this.onInputChange(e.target.value)}
          slotProps={{
            htmlInput: {
              autoCapitalize: 'off',
              autoCorrect: 'off',
            },
            input: {
              sx: { height: 40 },
              startAdornment: (
                <InputAdornment position="start">
                  <SearchIcon color="action" />
                </InputAdornment>
              ),
              endAdornment: (
                <InputAdornment position="end">
                  <IconButton
                    size="small"
                    onClick={() => this.clearInput()}
                    onMouseDown={(e) => e.preventDefault()}
                    aria-label="Suche löschen"
                  >
                    <ClearIcon fontSize="small" />
                  </IconButton>
                </InputAdornment>
              ),
            },
          }}
        />
      </Box>
    );
  }
}

class ArtikelMarkenPage extends PureComponent {
  constructor(props) {
    super(props);
    this.state = {
      status: brandAutomat.state.status,
      error: brandAutomat.state.error ? backendErrorFrom({ message: brandAutomat.state.error }) : null,
      brands: brandAutomat.state.brands,
    };
    this.searchRef = createRef();
    this.createRowRef = createRef();
    this.handleRetry = this.handleRetry.bind(this);
  }

  componentDidMount() {
    setLastArticleSku(null);

    this.unsub = brandAutomat.subscribe(this, (state) => ({
      brands: state.brands,
      status: state.status,
      error: state.error ? backendErrorFrom({ message: state.error }) : null,
    }));
  }

  componentWillUnmount() {
    this.unsub?.();
  }

  handleRetry() {
    // The automat owns fetching; just ask it to load again.
    void brandAutomat.actions.load().catch((err) => notifyError(err));
  }

  render() {
    const { status, error, brands } = this.state;

    if (status === 'loading' || status === 'idle') {
      return (
        <Box sx={{ display: 'flex', justifyContent: 'center', py: 6 }}>
          <CircularProgress />
        </Box>
      );
    }

    if (status === 'failed') {
      return <BackendError error={error} onRetry={this.handleRetry} />;
    }

    return (
      <>
        <ArtikelMarkenSearchField inputRef={this.searchRef} />
        <PanelTileGrid>
          <PanelTile wide={2} minHeight={0} color={PURPLE_PANEL} sx={{ pb: 0 }}>
            <FillSpace
              aboveRef={[this.searchRef]}
              belowRef={this.createRowRef}
              reserveBottom={32}
              minPageSize={8}
              minHeight={0}
              items={brands}
              renderItem={ArtikelMarke}
            />

            <ArtikelMarkeNew rowRef={this.createRowRef} />
          </PanelTile>
        </PanelTileGrid>
      </>
    );
  }
}

export { ArtikelMarke, ArtikelMarkeNew, ArtikelMarkenSearchField };
export default ArtikelMarkenPage;