Translate Buttons for beta.character.ai

Adds a translate buttons for character messages in the chat for beta.character.ai
当前为 2022-12-24 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name        Translate Buttons for beta.character.ai
// @namespace   TranslateButtonsForBetaCharacterAI
// @description Adds a translate buttons for character messages in the chat for beta.character.ai
// @version     2.0.1
// @author      CriDos
// @icon        https://www.google.com/s2/favicons?sz=64&domain=beta.character.ai
// @match       https://beta.character.ai/chat?char=*
// @grant       GM_xmlhttpRequest
// @run-at      document-end
// @require     https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.min.js
// @license     MIT
// ==/UserScript==

'use strict';

console.log(`Translate Buttons initializing...`);

let debug = false;

setInterval(addTranslateButtons, 1000);

function addTranslateButtons() {
  var charMessages = document.getElementsByClassName("char-msg");
  for (var i = 0; i < charMessages.length; i++) {
    const msgNode = charMessages[i];

    const markdownWrapper = msgNode.querySelector(".markdown-wrapper");
    if (!markdownWrapper) {
      continue;
    }

    const parentMsgMarkdown = msgNode.parentElement;
    if (parentMsgMarkdown.isAutoTranslate) {
      continue;
    }
    parentMsgMarkdown.isAutoTranslate = true;

    setInterval(async () => {
      await translateNode(msgNode);
    }, 500);
  }
}

async function translateNode(node) {
  const translateClassName = "translate-markdown";
  const parentMsgMarkdown = node.parentElement;

  const msgMarkdownContent = node.outerHTML;
  if (node.storeContent == msgMarkdownContent) {
    return;
  }
  node.storeContent = msgMarkdownContent;

  var translateNode = parentMsgMarkdown.querySelector(`.${translateClassName}`);
  if (translateNode == null) {
    translateNode = node.cloneNode(true);
    translateNode.classList.add(translateClassName);
    parentMsgMarkdown.insertBefore(translateNode, parentMsgMarkdown.firstChild);
  }

  var msgMarkdownClone = node.cloneNode(true);
  msgMarkdownClone.classList.add(translateClassName);
  const msgMarkdownCloneContent = msgMarkdownClone.outerHTML;
  msgMarkdownClone = null;

  translateNode.outerHTML = await translateHTML(msgMarkdownCloneContent, "en", navigator.language);
}

async function translateHTML(html, sLang, tLang) {
  const excludeTagRegex = /<(pre|code)[^>]*>([\s\S]*?)<\/(pre|code)>/g;
  const excludeTags = [];
  const excludePlaceholder = 'e0x0c';

  let translateHTML = html;

  let excludeTagsMatch;
  while (excludeTagsMatch = excludeTagRegex.exec(html)) {
    excludeTags.push(excludeTagsMatch[0]);
    translateHTML = translateHTML.replace(excludeTagsMatch[0], `${excludePlaceholder}${excludeTags.length - 1}`);
  }

  if (debug) {
    console.log(`preTranslateHTML: ${html}`);
  }

  translateHTML = await translateText(translateHTML, sLang, tLang);

  for (let i = 0; i < excludeTags.length; i++) {
    translateHTML = translateHTML.replace(`${excludePlaceholder}${i}`, excludeTags[i]);
  }

  if (debug) {
    console.log(`postTranslateHTML: ${translateHTML}`);
  }

  return translateHTML;
}

async function translateText(text, sLang, tLang) {
  const url = `https://translate.googleapis.com/translate_a/single?client=gtx&format=text&sl=${sLang}&tl=${tLang}&dt=t&q=${encodeURIComponent(text)}`;

  try {
    if (debug) {
      console.log(`preTranslate: ${text}`);
    }

    const response = await doXHR(url);
    const responseText = JSON.parse(response.responseText);

    let postTranslate = "";
    responseText[0].forEach(part => {
      postTranslate += part[0];
    });

    if (debug) {
      console.log(`postTranslate: ${postTranslate}`);
    }

    return postTranslate;
  } catch (error) {
    console.error(error);
  }
}

async function doXHR(url) {
  return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest();
    xhr.open("GET", url);
    xhr.onload = () => resolve(xhr);
    xhr.onerror = () => reject(xhr.statusText);
    xhr.send();
  });
}
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