import React from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames/bind';

import 'terra-base/lib/baseStyles';
import styles from './Select.scss';

const cx = classNames.bind(styles);

const propTypes = {

  /**
   * WARNING: This prop is deprecated, please use the options prop.
   * List of choices to be selected.
   * If choices and options array are supplied, options array will be used over choices.
   */
  choices: PropTypes.array,

  /**
   * List of object key and value pairs for choices to be selected.
   * If choices and options array are supplied, options array will be used over choices.
   */
  options: PropTypes.arrayOf(PropTypes.shape({
    value: PropTypes.string.isRequired,
    display: PropTypes.string.isRequired,
    disabled: PropTypes.bool,
  })),

  /**
   * Function to trigger when the user changes the select value. Provide a function to create a controlled input.
   */
  onChange: PropTypes.func,

  /**
   * Name of the select field.
   */
  name: PropTypes.string,

  /**
   * Whether the select is required or not.
   */
  required: PropTypes.bool,

  /**
   * The value to start the select on.
   */
  defaultValue: PropTypes.string,

  /**
   * The value of the select element. Use this to create a controlled input.
   */
  value: PropTypes.string,
};

const defaultProps = {
  choices: null,
  options: null,
  onChange: undefined,
  name: null,
  required: false,
  defaultValue: undefined,
  value: undefined,
};

const Select = ({
  choices,
  options,
  onChange,
  name,
  required,
  defaultValue,
  value,
  ...customProps
}) => {
  const additionalSelectProps = Object.assign({}, customProps);
  const selectClasses = cx(['select', additionalSelectProps.className]);

  if (required) {
    additionalSelectProps['aria-required'] = 'true';
  }

  let finalOptions;
  if (choices && options === null) {
    // Build out key & value array for deprecated choices prop
    finalOptions = choices.map(choice => ({ value: choice, display: choice }));
    /* eslint-disable no-console */
    console.warn('The choices prop for the Terra Form Select component is deprecated and will be removed in a later release. Please use the options prop instead https://terra-ui.herokuapp.com/components/core/form#select.');
    /* eslint-disable no-console */
  } else {
    finalOptions = options;
  }

  return (
    <select
      {...additionalSelectProps}
      name={name}
      required={required}
      onChange={onChange}
      defaultValue={defaultValue}
      value={value}
      className={selectClasses}
    >
      {finalOptions.map(option => <option key={`${option.value}-${option.display}`} value={option.value} disabled={option.disabled}>
        {option.display}
      </option>)}
    </select>
  );
};

Select.propTypes = propTypes;
Select.defaultProps = defaultProps;

export default Select;