import { getChatId, getIsEventMsg, getMsgType } from "../../utils/msgTools";
import { sendMsg } from "../../utils/sendMsg";

/**
 * 获取文本内容并剔除艾特信息
 * @param {LarkMessageEvent} body
 * @returns {string} 文本内容
 */
export const getMsgText = (body: LarkMessageEvent) => {
  // TODO: 如果之后想支持单独提醒，这里需要做模板解析
  try {
    const { text }: { text: string } = JSON.parse(
      body?.event?.message?.content
    );
    // 去掉@_user_1相关的内容，例如 '@_user_1 测试' -> '测试'
    const textWithoutAt = text.replace(/@_user_\d+/g, "");
    // 去除空格和换行
    const textWithoutSpace = textWithoutAt.replace(/[\s\n]/g, "");
    return textWithoutSpace;
  } catch (e) {
    return "";
  }
};

/**
 * 过滤出非法消息，如果发表情包就直接发回去
 * @param {LarkMessageEvent} body
 * @returns {boolean} 是否为非法消息
 */
const filterIllegalMsg = (body: LarkMessageEvent) => {
  const chatId = getChatId(body);
  if (!chatId) return true;
  // 获取msgType
  const msgType = getMsgType(body);
  // 发表情包就直接发回去
  if (msgType === "sticker") {
    const content = body?.event?.message?.content;
    sendMsg("chat_id", chatId, "sticker", content);
    return true;
  }
  // 剩下的非文字消息暂时不处理
  if (msgType !== "text") {
    const textList = [
      "仅支持普通文本内容[黑脸]",
      "唔...我只能处理普通文本哦[泣不成声]",
      "噢！这似乎是个非普通文本[看]",
      "哇！这是什么东东？我只懂普通文本啦！[可爱]",
      "只能处理普通文本内容哦[捂脸]",
    ];
    const content = JSON.stringify({
      text: textList[Math.floor(Math.random() * textList.length)],
    });
    sendMsg("chat_id", chatId, "text", content);
    return true;
  }
  // 还得过滤下艾特全体成员的消息
  if (getMsgText(body).includes("@_all")) {
    return true;
  }
  return false;
};

/**
 * 回复普通消息
 * @param {LarkMessageEvent} body
 */
const replyNomalMsg = async (body: LarkMessageEvent) => {
  const chatId = getChatId(body);
  const content = JSON.stringify({
    type: "template",
    data: {
      config: {
        enable_forward: false,
        update_multi: true,
      },
      template_id: "ctp_AAyVx5R39xU9",
    },
  });
  await sendMsg("chat_id", chatId, "interactive", content);
};

/**
 * 处理Event消息
 * @param {LarkUserAction} body
 */
export const manageEventMsg = (body: LarkMessageEvent) => {
  // 过滤非Event消息
  if (!getIsEventMsg(body)) {
    return false;
  }
  // 过滤非法消息
  if (filterIllegalMsg(body)) {
    return true;
  }
  // 临时返回消息
  replyNomalMsg(body);
  return true;
};