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import { useEffect, useRef } from 'react';
import cw from 'cw';
import '../../styles.css';
declare global {
interface Window {
cw: any;
}
}
const ChartEmbedPage = () => {
const actxRef = useRef<any>(null);
// Add meta tag for WebView compatibility and set page title
useEffect(() => {
// Set viewport for better mobile display
const viewportMeta = document.createElement('meta');
viewportMeta.name = 'viewport';
viewportMeta.content = 'width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no';
document.head.appendChild(viewportMeta);
// Set page title
document.title = 'Morse Code Chart | Embed';
return () => {
// Remove viewport meta tag when component unmounts
const metaTag = document.querySelector('meta[name="viewport"]');
if (metaTag && metaTag.parentNode) {
metaTag.parentNode.removeChild(metaTag);
}
};
}, []);
// Initialize audio context
const initAudio = () => {
if (actxRef.current) return; // Already initialized
try {
actxRef.current = cw.initAudioContext({ tone: 600 });
} catch (error) {
console.error('Failed to initialize audio context:', error);
}
};
// Play Morse code for a character
const playCharacter = (character: string) => {
// Initialize audio on first user interaction
if (!actxRef.current) {
initAudio();
}
if (actxRef.current) {
// Remove 'playing' class from all items
document.querySelectorAll('.morse-item').forEach(item => {
item.classList.remove('playing');
});
// Add 'playing' class to the clicked item
const clickedItem = document.querySelector(`.morse-item[data-char="${character}"]`);
if (clickedItem) {
clickedItem.classList.add('playing');
}
cw.play(character, {
wpm: 20,
actx: actxRef.current
});
// Remove the 'playing' class after the audio finishes
setTimeout(() => {
if (clickedItem) {
clickedItem.classList.remove('playing');
}
}, 2000);
}
};
// Add click event listeners to all morse items
useEffect(() => {
const handleMorseItemClick = (e: Event) => {
const target = e.currentTarget as HTMLElement;
const character = target.getAttribute('data-char');
if (character) {
playCharacter(character);
}
};
const morseItems = document.querySelectorAll('.morse-item');
morseItems.forEach(item => {
item.addEventListener('click', handleMorseItemClick);
});
return () => {
morseItems.forEach(item => {
item.removeEventListener('click', handleMorseItemClick);
});
};
}, []);
return (
<div className="embed-container">
<h1 className="embed-title">Morse Code Reference</h1>
<div className="chart-section">
<h2>Letters</h2>
<div className="morse-grid">
{[...'ABCDEFGHIJKLMNOPQRSTUVWXYZ'].map(char => (
<div key={char} className="morse-item" data-char={char}>
<div className="character">{char}</div>
<div className="morse">{getMorseCode(char)}</div>
</div>
))}
</div>
</div>
<div className="chart-section">
<h2>Numbers</h2>
<div className="morse-grid">
{[...'1234567890'].map(char => (
<div key={char} className="morse-item" data-char={char}>
<div className="character">{char}</div>
<div className="morse">{getMorseCode(char)}</div>
</div>
))}
</div>
</div>
<div className="chart-section">
<h2>Special Characters</h2>
<div className="morse-grid">
{[...'.=,?/'].map(char => (
<div key={char} className="morse-item" data-char={char}>
<div className="character">{char}</div>
<div className="morse">{getMorseCode(char)}</div>
</div>
))}
</div>
</div>
</div>
);
};
// Helper function to get morse code representation
const getMorseCode = (char: string) => {
const morseMap: { [key: string]: string } = {
'A': '·−', 'B': '−···', 'C': '−·−·', 'D': '−··', 'E': '·',
'F': '··−·', 'G': '−−·', 'H': '····', 'I': '··', 'J': '·−−−',
'K': '−·−', 'L': '·−··', 'M': '−−', 'N': '−·', 'O': '−−−',
'P': '·−−·', 'Q': '−−·−', 'R': '·−·', 'S': '···', 'T': '−',
'U': '··−', 'V': '···−', 'W': '·−−', 'X': '−··−', 'Y': '−·−−',
'Z': '−−··', '0': '−−−−−', '1': '·−−−−', '2': '··−−−', '3': '···−−',
'4': '····−', '5': '·····', '6': '−····', '7': '−−···', '8': '−−−··',
'9': '−−−−·', '.': '·−·−·−', ',': '−−··−−', '?': '··−−··', '/': '−··−·', '=': '−···−'
};
return morseMap[char] || '';
};
export default ChartEmbedPage;
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