flexor-web/src/components/forms/text-field.tsx

import React, { FC, FocusEventHandler } from 'react'
import { useSelector, useDispatch } from 'react-redux'
import classNames from 'classnames'
import noop from 'lodash/noop'
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
import { IconDefinition } from '@fortawesome/fontawesome-common-types'

import { setFieldValue } from 'src/actions/forms'
import { getFieldValue, getFieldNotification } from 'src/selectors/forms'
import { notificationTypeToClassName } from 'src/utils'
import { AppState, FormNotification, ClassDictionary } from 'src/types'

interface Props {
    name: string
    label: string
    type?: 'text' | 'email'
    placeholder?: string
    help?: string
    icon?: IconDefinition
    onBlur?: FocusEventHandler<HTMLInputElement>
}

const TextField: FC<Props> = ({
    name,
    label,
    type = 'text',
    placeholder,
    help,
    icon,
    onBlur = noop,
}) => {
    const value = useSelector<AppState, string>(state => getFieldValue<string>(state, name, ''))
    const notification = useSelector<AppState, FormNotification | undefined>(state => getFieldNotification(state, name))

    const dispatch = useDispatch()

    const controlClassDictionary = { control: true, 'has-icons-left': !!icon }
    const helpClassDictionary: ClassDictionary = { help: true }
    const inputClassDictionary: ClassDictionary = { input: true }

    if (notification) {
        const ncn = notificationTypeToClassName(notification.type)
        
        helpClassDictionary[ncn] = true
        inputClassDictionary[ncn] = true
    }

    return (
        <div className="field">
            <label className="label">{label}</label>
            <div className={classNames(controlClassDictionary)}>
                <input
                    className={classNames(inputClassDictionary)}
                    type={type}
                    placeholder={placeholder}
                    value={value}
                    onChange={e => dispatch(setFieldValue(name, e.target.value))}
                    onBlur={onBlur} />
                {icon &&
                    <span className="icon is-small is-left">
                        <FontAwesomeIcon icon={icon} />
                    </span>
                }
            </div>
            {(!notification && help) && <p className="help">{help}</p>}
            {notification && <p className={classNames(helpClassDictionary)}>{notification.message}</p>}
        </div>
    )
}

export default TextField