// Code from Benjamin Hollon (benjaminhollon@fosstodon.org)

const addCharDelay = 75;
const removeCharDelay = 45;
const wordDelay = 1500;

const typewriterElement = document.getElementById('typewriter');
const typewriterPrompts = [
	  'Amateur Radio Operator',
      'Electrical Engineering Student',
      'Film Enjoyer'
];
let currentTypewriterIndex = 0;

function typeNextPrompt() {
	function typeChar(char) {
		if (char !== '~') typewriterElement.innerText += char;
	}
	function removeChar() {
		typewriterElement.innerText = typewriterElement.innerText.slice(0, -1);
	}

	const word = typewriterPrompts[currentTypewriterIndex];
	let delaySoFar = 0;
	// Type it
	for (const char of word) {
		setTimeout(typeChar.bind(this, char), delaySoFar);
		delaySoFar += addCharDelay;
	}

	delaySoFar += wordDelay;

	for (const char of word.split('').reverse()) {
		setTimeout(removeChar, delaySoFar);
		delaySoFar += removeCharDelay;
	}

	currentTypewriterIndex = (currentTypewriterIndex + 1) % typewriterPrompts.length;
	setTimeout(typeNextPrompt, delaySoFar);
}

setTimeout(typeNextPrompt, wordDelay / 2);