content.js

function makeBionic(text) {
  return text.replace(/\b\w+\b/g, word => {
    const midpoint = Math.ceil(word.length / 2);
    return `<strong>${word.slice(0, midpoint)}</strong>${word.slice(midpoint)}`;
  });
}

function processNode(node) {
  if (node.nodeType === Node.TEXT_NODE) {
    const span = document.createElement('span');
    span.innerHTML = makeBionic(node.textContent);
    node.parentNode.replaceChild(span, node);
  } else if (node.nodeType === Node.ELEMENT_NODE && !['SCRIPT', 'STYLE', 'TEXTAREA'].includes(node.tagName)) {
    Array.from(node.childNodes).forEach(processNode);
  }
}

function enableBionicReader() {
  processNode(document.body);
}

function disableBionicReader() {
  location.reload(); // Reload the page to reset the content
}

chrome.runtime.onMessage.addListener((message) => {
  if (message.action === 'enable') {
    enableBionicReader();
  } else if (message.action === 'disable') {
    disableBionicReader();
  }
});