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

import { withStyles } from '@material-ui/core/styles';
import Button from '@material-ui/core/Button';
import Checkbox from '@material-ui/core/Checkbox';
import FormControlLabel from '@material-ui/core/FormControlLabel';
import List from '@material-ui/core/List';
import ListItem from '@material-ui/core/ListItem';
import ListItemText from '@material-ui/core/ListItemText';
import ListItemAvatar from '@material-ui/core/ListItemAvatar';
import ListItemSecondaryAction from '@material-ui/core/ListItemSecondaryAction';

import Avatar from '@material-ui/core/Avatar';
import IconButton from '@material-ui/core/IconButton';
import LockIcon from '@material-ui/icons/Lock';
import LockOpenIcon from '@material-ui/icons/LockOpen';
import DeleteIcon from '@material-ui/icons/Delete';
import SaveIcon from '@material-ui/icons/Save';

import { TextValidator, ValidatorForm } from 'react-material-ui-form-validator';
import { isNetworkOpen, networkSecurityMode } from '../constants/WiFiSecurityModes';

import isIP from '../validators/isIP';
import isHostname from '../validators/isHostname';
import optional from '../validators/optional';
import PasswordValidator from '../components/PasswordValidator';

const styles = theme => ({
  textField: {
    width: "100%"
  },
  checkboxControl: {
    width: "100%"
  },
  button: {
    marginRight: theme.spacing(2),
    marginTop: theme.spacing(2),
  }
});

class WiFiSettingsForm extends React.Component {

  componentWillMount() {
    ValidatorForm.addValidationRule('isIP', isIP);
    ValidatorForm.addValidationRule('isHostname', isHostname);
    ValidatorForm.addValidationRule('isOptionalIP', optional(isIP));
  }

  renderSelectedNetwork() {
    const { selectedNetwork, deselectNetwork } = this.props;
    return (
      <List>
        <ListItem>
          <ListItemAvatar>
            <Avatar>
              {isNetworkOpen(selectedNetwork) ? <LockOpenIcon /> : <LockIcon />}
            </Avatar>
          </ListItemAvatar>
          <ListItemText
            primary={selectedNetwork.ssid}
            secondary={"Security: " + networkSecurityMode(selectedNetwork) + ", Ch: " + selectedNetwork.channel}
          />
          <ListItemSecondaryAction>
            <IconButton aria-label="Manual Config" onClick={deselectNetwork}>
              <DeleteIcon />
            </IconButton>
          </ListItemSecondaryAction>
        </ListItem>
      </List>
    );
  }

  render() {
    const { classes, wifiSettings, selectedNetwork, handleValueChange, handleCheckboxChange, onSubmit, onReset } = this.props;
    return (
      <ValidatorForm onSubmit={onSubmit} ref="WiFiSettingsForm">
        {
          selectedNetwork ? this.renderSelectedNetwork() :
            <TextValidator
              validators={['matchRegexp:^.{0,32}$']}
              errorMessages={['SSID must be 32 characters or less']}
              name="ssid"
              label="SSID"
              className={classes.textField}
              value={wifiSettings.ssid}
              onChange={handleValueChange('ssid')}
              margin="normal"
            />
        }
        {
          !isNetworkOpen(selectedNetwork) &&
          <PasswordValidator
            validators={['matchRegexp:^.{0,64}$']}
            errorMessages={['Password must be 64 characters or less']}
            name="password"
            label="Password"
            className={classes.textField}
            value={wifiSettings.password}
            onChange={handleValueChange('password')}
            margin="normal"
          />
        }
        <TextValidator
          validators={['required', 'isHostname']}
          errorMessages={['Hostname is required', "Not a valid hostname"]}
          name="hostname"
          label="Hostname"
          className={classes.textField}
          value={wifiSettings.hostname}
          onChange={handleValueChange('hostname')}
          margin="normal"
        />
        <FormControlLabel className={classes.checkboxControl}
          control={
            <Checkbox
              value="static_ip_config"
              checked={wifiSettings.static_ip_config}
              onChange={handleCheckboxChange("static_ip_config")}
            />
          }
          label="Static IP Config?"
        />
        {
          wifiSettings.static_ip_config &&
          <Fragment>
            <TextValidator
              validators={['required', 'isIP']}
              errorMessages={['Local IP is required', 'Must be an IP address']}
              name="local_ip"
              label="Local IP"
              className={classes.textField}
              value={wifiSettings.local_ip}
              onChange={handleValueChange('local_ip')}
              margin="normal"
            />
            <TextValidator
              validators={['required', 'isIP']}
              errorMessages={['Gateway IP is required', 'Must be an IP address']}
              name="gateway_ip"
              label="Gateway"
              className={classes.textField}
              value={wifiSettings.gateway_ip}
              onChange={handleValueChange('gateway_ip')}
              margin="normal"
            />
            <TextValidator
              validators={['required', 'isIP']}
              errorMessages={['Subnet mask is required', 'Must be an IP address']}
              name="subnet_mask"
              label="Subnet"
              className={classes.textField}
              value={wifiSettings.subnet_mask}
              onChange={handleValueChange('subnet_mask')}
              margin="normal"
            />
            <TextValidator
              validators={['isOptionalIP']}
              errorMessages={['Must be an IP address']}
              name="dns_ip_1"
              label="DNS IP #1"
              className={classes.textField}
              value={wifiSettings.dns_ip_1}
              onChange={handleValueChange('dns_ip_1')}
              margin="normal"
            />
            <TextValidator
              validators={['isOptionalIP']}
              errorMessages={['Must be an IP address']}
              name="dns_ip_2"
              label="DNS IP #2"
              className={classes.textField}
              value={wifiSettings.dns_ip_2}
              onChange={handleValueChange('dns_ip_2')}
              margin="normal"
            />
          </Fragment>
        }
        <Button startIcon={<SaveIcon />} variant="contained" color="primary" className={classes.button} type="submit">
          Save
        </Button>
        <Button variant="contained" color="secondary" className={classes.button} onClick={onReset}>
          Reset
        </Button>
      </ValidatorForm>
    );
  }
}

WiFiSettingsForm.propTypes = {
  classes: PropTypes.object.isRequired,
  wifiSettings: PropTypes.object,
  deselectNetwork: PropTypes.func,
  selectedNetwork: PropTypes.object,
  onSubmit: PropTypes.func.isRequired,
  onReset: PropTypes.func.isRequired,
  handleValueChange: PropTypes.func.isRequired,
  handleCheckboxChange: PropTypes.func.isRequired
};

export default withStyles(styles)(WiFiSettingsForm);