import React, { Fragment, PureComponent } from 'react';
import PropTypes from 'prop-types';

import { withStyles } from '@material-ui/core/styles';

import { Input, InputLabel, FormControl, FormHelperText, Select } from '@material-ui/core';

const styles = theme => ({
  demo: {
    height: 'auto',
  },
  divider: {
    display: 'block',
    margin: `${theme.spacing(3)}px 0`,
  },
  field: {
    margin: `${theme.spacing(3)}px 5px`,
  },
  root: {
    display: 'flex',
    flexWrap: 'wrap',
  },
  formControl: {
    margin: theme.spacing(1),
    minWidth: 120,
  },
  selectEmpty: {
    marginTop: theme.spacing(2),
  },
});

class NativeSelectbox extends PureComponent {
  state = {
    age: '',
    name: 'hai',
  };

  handleChange = name => event => {
    this.setState({ [name]: event.target.value });
  };

  render() {
    const { classes } = this.props;
    return (
      <Fragment>
        <FormControl className={classes.formControl}>
          <InputLabel htmlFor="age-native-simple">Age</InputLabel>
          <Select
            native
            value={this.state.age}
            onChange={this.handleChange('age')}
            inputProps={{
              id: 'age-native-simple',
            }}
          >
            <option value="" />
            <option value={10}>Ten</option>
            <option value={20}>Twenty</option>
            <option value={30}>Thirty</option>
          </Select>
        </FormControl>
        <FormControl className={classes.formControl}>
          <InputLabel htmlFor="age-native-helper">Age</InputLabel>
          <Select
            native
            value={this.state.age}
            onChange={this.handleChange('age')}
            input={<Input id="age-native-helper" />}
          >
            <option value="" />
            <option value={10}>Ten</option>
            <option value={20}>Twenty</option>
            <option value={30}>Thirty</option>
          </Select>
          <FormHelperText>Some important helper text</FormHelperText>
        </FormControl>
        <FormControl className={classes.formControl}>
          <Select
            native
            value={this.state.age}
            onChange={this.handleChange('age')}
            className={classes.selectEmpty}
          >
            <option value="">None</option>
            <option value={10}>Ten</option>
            <option value={20}>Twenty</option>
            <option value={30}>Thirty</option>
          </Select>
          <FormHelperText>Without label</FormHelperText>
        </FormControl>
        <FormControl className={classes.formControl} disabled>
          <InputLabel htmlFor="name-native-disabled">Name</InputLabel>
          <Select
            native
            value={this.state.name}
            onChange={this.handleChange('name')}
            input={<Input id="name-native-disabled" />}
          >
            <option value="" />
            <optgroup label="Author">
              <option value="hai">Hai</option>
            </optgroup>
            <optgroup label="Contributors">
              <option value="olivier">Olivier</option>
              <option value="kevin">Kevin</option>
            </optgroup>
          </Select>
          <FormHelperText>Disabled</FormHelperText>
        </FormControl>
        <FormControl className={classes.formControl} error>
          <InputLabel htmlFor="name-native-error">Name</InputLabel>
          <Select
            native
            value={this.state.name}
            onChange={this.handleChange('name')}
            input={<Input id="name-native-error" />}
          >
            <option value="" />
            <optgroup label="Author">
              <option value="hai">Hai</option>
            </optgroup>
            <optgroup label="Contributors">
              <option value="olivier">Olivier</option>
              <option value="kevin">Kevin</option>
            </optgroup>
          </Select>
          <FormHelperText>Error</FormHelperText>
        </FormControl>
        <FormControl className={classes.formControl}>
          <InputLabel htmlFor="name-input">Name</InputLabel>
          <Input id="name-input" />
          <FormHelperText>Alignment with an input</FormHelperText>
        </FormControl>
        <FormControl className={classes.formControl}>
          <InputLabel htmlFor="uncontrolled-native">Name</InputLabel>
          <Select native defaultValue={30} input={<Input id="uncontrolled-native" />}>
            <option value="" />
            <option value={10}>Ten</option>
            <option value={20}>Twenty</option>
            <option value={30}>Thirty</option>
          </Select>
          <FormHelperText>Uncontrolled</FormHelperText>
        </FormControl>
      </Fragment>
    );
  }
}

NativeSelectbox.propTypes = {
  classes: PropTypes.object.isRequired,
};

export default withStyles(styles)(NativeSelectbox);