learn-morse-code/src/components/PlayMorseInput.js

import React, { useState, useEffect } from "react"
import morseCode from '../data/morse-code.json'
import useMorsePlayer from "../hooks/useMorsePlayer";

export default (function PlayMorseInput() {

    const { playMorseWord } = useMorsePlayer()
    const [inputValue, setInputValue] = useState('')
    const [morseTranslation, setMorseTranslation] = useState('')

    function handleChange(e) {
        e.preventDefault()
        setInputValue(e.target.value)
    }

    function handlePlay() {
        playMorseWord(morseTranslation)
    }

    function convertWordToMorse(word) {
        let morse = ''
        for (let i in word) {
            morse += morseCode[word[i].toLowerCase()]
        }
        return morse
    }

    // Live translation of text into morse code
    useEffect(() => {
        let arr = Array.from(inputValue.trim().toLowerCase())
        let morse = arr.map(item => {
            if (item === ' ') {
                return '/'
            } else {
                let r = convertWordToMorse(item)
                return (r === 'undefined' ? '?' : r + ' ')
            }
        })
        let a = morse.map(i => i.trim()).join(' ').replace(/ \/ /g,'/').replace(/ \?/g,'?')
        setMorseTranslation(a)

    }, [inputValue])

    return (
        <div id="playMorseInput">
            <div id="title">
                <h2>Translate To Morse</h2>
            </div>
            <div id="input">
                <input type="text" id='morseInput' value={inputValue} onChange={handleChange} placeholder="Type here." maxLength="25"/> <i className="ri-play-fill" onClick={handlePlay}></i>
                <i className="ri-stop-fill" onClick={() => playMorseWord('')}></i> 
            </div>
            <div id="morseTranslation">
                <span id="morseTrans">
                    {morseTranslation === '' ? 'Morse translation will appear here.' : morseTranslation.replace(/\?/g,'[?]').replace(/\] /g,']')}
                </span>
            </div>
        </div>
    )
})