uzVideo/js/core/uzUtils.js

/**
 * @file 工具类
 */

class UZUtils {
  /**
   * 从链接中获取域名
   * @param {string} url
   * @returns
   */
  static getHostFromURL(url) {
    const protocolEndIndex = url.indexOf("://");
    if (protocolEndIndex === -1) {
      return null;
    }
    const hostStartIndex = protocolEndIndex + 3;
    const hostEndIndex = url.indexOf("/", hostStartIndex);
    const host =
      hostEndIndex === -1
        ? url.slice(hostStartIndex)
        : url.slice(hostStartIndex, hostEndIndex);

    return `${url.slice(0, protocolEndIndex + 3)}${host}`;
  }

  /**
   * 去除尾部的斜杠
   * @param {string} str
   * @returns
   */
  static removeTrailingSlash(str) {
    if (str.endsWith("/")) {
      return str.slice(0, -1);
    }
    return str;
  }

  /**
   * 根据正则表达式获取字符串
   * @param {*} pattern
   * @param {string} str
   * @returns {string}
   */
  static getStrByRegexDefault(pattern, str) {
    let matcher = pattern.exec(str);
    if (matcher !== null) {
      if (matcher.length >= 1) {
        if (matcher.length >= 1) return matcher[1];
      }
    }
    return str;
  }

  /**
   * 计算最长公共子串
   * @param {string} s1
   * @param {string} s2
   * @returns
   */
  static lcs(s1, s2) {
    const m = s1.length,
      n = s2.length;
    const dp = Array.from({ length: m + 1 }, () => Array(n + 1).fill(0));
    let maxLength = 0,
      endIndex = 0;

    for (let i = 1; i <= m; i++) {
      for (let j = 1; j <= n; j++) {
        if (s1[i - 1] === s2[j - 1]) {
          dp[i][j] = dp[i - 1][j - 1] + 1;
          if (dp[i][j] > maxLength) {
            maxLength = dp[i][j];
            endIndex = i - 1;
          }
        }
      }
    }

    return s1.substring(endIndex - maxLength + 1, endIndex + 1);
  }

  /**
   * 查找元素在数组中的位置
   * @param {Array} list
   * @param {string} element
   * @returns
   */
  static findIndex(list, element) {
    for (let i = 0; i < list.length; i++) {
      if (list[i] === element) {
        return i;
      }
    }
    return -1;
  }

  /**
   * 用于在 uz 扩展调试模式中展示 log 信息
   */
  static debugLog() {
    sendMessage("debugLog", JSON.stringify([...arguments]));
  }
}

//MARK: - 网络请求返回数据
/**
 * req 返回的数据
 */
class ProData {
  constructor() {
    this.error = "";
    this.data;

    /**
     * @type {object} 响应头
     */
    this.headers;

    /**
     * @type {number} 状态码
     */
    this.code;

    /**
     * @type {boolean} 是否成功
     */
    this.ok = () => this.code === 200;
  }
}

/**
 * 请求响应类型
 */
const ReqResponseType = {
  json: "json",
  arraybuffer: "arraybuffer",
  bytes: "bytes",
  plain: "plain",
  stream: "stream",
};

//MARK: - 网络请求
/**
 * 网络请求
 * @param {string} url 请求的URL
 * @param {object} options 请求参数 {headers:{},method:"POST",data:{},responseType:ReqResponseType}
 * @returns {Promise<ProData>}
 */
async function req(url, options) {
  let pro = await sendMessage(
    "req",
    JSON.stringify({ url: url, options: options })
  );
  return pro;
}

/**
 * 读取环境变量
 * @param {string} uzTag 直接传入扩展的 uzTag ,请勿修改
 * @param {string} key
 * @returns {@Promise<string>}
 */
async function getEnv(uzTag, key) {
  let res = await sendMessage(
    "getEnv",
    JSON.stringify({ uzTag: uzTag, key: key })
  );
  return res;
}

/**
 * 写入环境变量
 * @param {string} uzTag 直接传入扩展的 uzTag ,请勿修改
 * @param {string} key
 * @param {string} value
 * @param {string} summary 描述，新增时建议传入。修改时不必传入
 */
async function setEnv(uzTag, key, value, summary) {
  let res = await sendMessage(
    "setEnv",
    JSON.stringify({ uzTag: uzTag, key: key, value: value, summary: summary })
  );
}

/**
 * 跳转到验证页面，自动保存cookie
 * @param {string} url
 **/
async function goToVerify(url) {
  await sendMessage("goToVerify", JSON.stringify({ url: url }));
}

/**
 * toast 弹窗
 * @param {string} msg 提示信息
 * @param {number} duration 持续时间
 **/
function toast(msg, duration = 2) {
  sendMessage("toast", JSON.stringify({ msg: msg, duration: duration }));
}