/** 公共方法类 */
import { getToken } from "@/utils/auth";
import config from "@/config/config";

/**
 * 人性化时间显示
 *
 * @param {Object} datetime
 */
export function formatTime (datetime) {
  if (datetime == null) return "";

  datetime = datetime.replace(/-/g, "/");

  let time = new Date();
  let outTime = new Date(datetime);
  if (/^[1-9]\d*$/.test(datetime)) {
    outTime = new Date(parseInt(datetime) * 1000);
  }

  if (
    time.getTime() < outTime.getTime() ||
    time.getFullYear() != outTime.getFullYear()
  ) {
    return parseTime(outTime, "{y}-{m}-{d} {h}:{i}");
  }

  if (time.getMonth() != outTime.getMonth()) {
    return parseTime(outTime, "{m}-{d} {h}:{i}");
  }

  if (time.getDate() != outTime.getDate()) {
    let day = outTime.getDate() - time.getDate();
    if (day == -1) {
      return parseTime(outTime, "昨天 {h}:{i}");
    }

    if (day == -2) {
      return parseTime(outTime, "前天 {h}:{i}");
    }

    return parseTime(outTime, "{m}-{d} {h}:{i}");
  }

  if (time.getHours() != outTime.getHours()) {
    return parseTime(outTime, "{h}:{i}");
  }

  let minutes = outTime.getMinutes() - time.getMinutes();
  if (minutes == 0) {
    return "刚刚";
  }

  minutes = Math.abs(minutes);
  return `${minutes}分钟前`;
}

/**
 * 格式化文件大小
 *
 * @param {String} value 文件大小(字节)
 */
export function formatSize (value) {
  if (null == value || value == "") {
    return "0";
  }
  let unitArr = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
  let index = 0;
  let srcsize = parseFloat(value);
  index = Math.floor(Math.log(srcsize) / Math.log(1024));
  let size = srcsize / Math.pow(1024, index);
  size = size.toFixed(2); //保留的小数位数
  return size + unitArr[index];
}
/**
 * 获取文件后缀名
 *
 * @param {String} fileName
 */
export function getFileExt (fileName) {
  let ext = fileName.split(".");
  ext = ext[ext.length - 1]; // 获取文件后缀名
  return ext;
}

/**
 * 根据图片url下载图片
 * @param {String} imgsrc
 * @param {String} name
 */
export function downloadIamge (imgsrc, name) {
  //下载图片地址和图片名
  let image = new Image();
  // 解决跨域 Canvas 污染问题
  image.setAttribute("crossOrigin", "anonymous");
  image.onload = function () {
    let canvas = document.createElement("canvas");
    canvas.width = image.width;
    canvas.height = image.height;
    let context = canvas.getContext("2d");
    context.drawImage(image, 0, 0, image.width, image.height);
    let url = canvas.toDataURL("image/png"); //得到图片的base64编码数据
    let a = document.createElement("a"); // 生成一个a元素
    let event = new MouseEvent("click"); // 创建一个单击事件
    a.download = name || "photo"; // 设置图片名称
    a.href = url; // 将生成的URL设置为a.href属性
    a.dispatchEvent(event); // 触发a的单击事件
  };
  image.src = imgsrc;
}

/**
 * 通过图片url获取图片大小
 *
 * @param {String} imgsrc 例如图片名： D8x5f13a53dbc4b9_350x345.png
 */
export function getImageInfo (imgsrc) {
  let data = {
    width: 0,
    height: 0,
  };

  let arr = imgsrc.split("_");
  if (arr.length == 1) return data;

  let info = arr[arr.length - 1].match(/\d+x\d+/g);
  if (info == null) return data;

  info = info[0].split("x");
  return {
    width: parseInt(info[0]),
    height: parseInt(info[1]),
  };
}

/**
 * 文件下载方法
 *
 * @param {Number} cr_id
 */
export function download (cr_id) {
  let api = config.BASE_API_URL;
  let token = getToken();
  try {
    let link = document.createElement("a");
    link.href = `${api}/download/user-chat-file?cr_id=${cr_id}&token=${token}`;
    link.click();
  } catch (e) { }
}

/**
 * 时间格式化方法
 *
 * @param {(Object|string|number)} time
 * @param {String} cFormat
 * @returns {String | null}
 */
export function parseTime (time, cFormat) {
  if (arguments.length === 0) {
    return null;
  }

  let date;
  const format = cFormat || "{y}-{m}-{d} {h}:{i}:{s}";

  if (typeof time === "object") {
    date = time;
  } else {
    if (typeof time === "string" && /^[0-9]+$/.test(time)) {
      time = parseInt(time);
    }
    if (typeof time === "number" && time.toString().length === 10) {
      time = time * 1000;
      console.log("时间判断为number");
    }

    date = new Date(time.replace(/-/g, "/"));
  }

  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay(),
  };

  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key];
    // Note: getDay() returns 0 on Sunday
    if (key === "a") {
      return ["日", "一", "二", "三", "四", "五", "六"][value];
    }

    return value.toString().padStart(2, "0");
  });

  return time_str;
}

/**
 * 去除字符串控制
 *
 * @param {String} str
 */
export function trim (str, type = null) {
  if (type) {
    return str.replace(/(^\s*)|(\s*$)/g, "");
  } else if (type == "l") {
    return str.replace(/(^\s*)/g, "");
  } else {
    return str.replace(/(\s*$)/g, "");
  }
}

/**
 * 解析url中参数
 *
 * @param {String} url
 * @returns {Object}
 */
export function param2Obj (url) {
  const search = url.split("?")[1];

  if (!search) return {};

  return JSON.parse(
    '{"' +
    decodeURIComponent(search)
      .replace(/"/g, '\\"')
      .replace(/&/g, '","')
      .replace(/=/g, '":"')
      .replace(/\+/g, " ") +
    '"}'
  );
}

/**
 * @param {Object} json
 * @returns {Array}
 */
export function param (json) {
  if (!json) return "";
  return cleanArray(
    Object.keys(json).map((key) => {
      if (json[key] === undefined) return "";

      return encodeURIComponent(key) + "=" + encodeURIComponent(json[key]);
    })
  ).join("&");
}

/**
 * @param {Array} actual
 * @returns {Array}
 */
export function cleanArray (actual) {
  const newArray = [];
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i]);
    }
  }

  return newArray;
}

/**
 * @param {HTMLElement} element
 * @param {String} className
 */
export function toggleClass (element, className) {
  if (!element || !className) {
    return;
  }

  let classString = element.className;
  let nameIndex = classString.indexOf(className);
  if (nameIndex === -1) {
    classString += "" + className;
  } else {
    classString =
      classString.substr(0, nameIndex) +
      classString.substr(nameIndex + className.length);
  }
  element.className = classString;
}

/**
 * Check if an element has a class
 *
 * @param {HTMLElement} elm
 * @param {String} cls
 * @returns {Boolean}
 */
export function hasClass (ele, cls) {
  return !!ele.className.match(new RegExp("(\\s|^)" + cls + "(\\s|$)"));
}

/**
 * Add class to element
 *
 * @param {HTMLElement} elm
 * @param {String} cls
 */
export function addClass (ele, cls) {
  if (!hasClass(ele, cls)) ele.className += " " + cls;
}

/**
 * Remove class from element
 *
 * @param {HTMLElement} elm
 * @param {String} cls
 */
export function removeClass (ele, cls) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp("(\\s|^)" + cls + "(\\s|$)");
    ele.className = ele.className.replace(reg, " ");
  }
}

/**
 * 通过图片Url获取图片等比例缩放的宽度和高度信息
 *
 * @param {String} src
 * @param {Number} width
 */
export function imgZoom (src, width = 200) {
  const info = getImageInfo(src);

  if (info.width < width) {
    return {
      width: `${info.width}px`,
      height: `${info.height}px`,
    };
  }

  return {
    width: width + "px",
    height: parseInt(info.height / (info.width / width)) + "px",
  };
}

/**
 * 获取浏览器光标选中内容
 *
 * @export
 * @returns
 */
export function getSelection () {
  return window.getSelection
    ? window.getSelection().toString()
    : document.selection.createRange().text;
}

/**
 * 剪贴板复制功能
 *
 * @param {String} value 复制内容
 * @param {Function} callback 复制成功回调方法
 */
export const copyTextToClipboard = (value, callback) => {
  let textArea = document.createElement("textarea");
  textArea.style.background = "transparent";
  textArea.value = value;

  document.body.appendChild(textArea);

  textArea.select();

  try {
    document.execCommand("copy");
    if (callback) callback();
  } catch (err) {
    this.$message.error("Oops, unable to copy");
  }

  document.body.removeChild(textArea);
};

/**
 * 隐藏用户手机号中间四位
 *
 * @param {String} phone  手机号
 */
export function hidePhone (phone) {
  return phone.replace(/(\d{3})\d{4}(\d{4})/, "$1****$2");
}

/**
 * 人性化显示时间
 *
 * @param {Object} datetime
 */
export function beautifyTime (datetime = "") {
  if (datetime == null) {
    return "";
  }

  datetime = datetime.replace(/-/g, "/");

  let time = new Date();
  let outTime = new Date(datetime);
  if (/^[1-9]\d*$/.test(datetime)) {
    outTime = new Date(parseInt(datetime) * 1000);
  }

  if (time.getTime() < outTime.getTime()) {
    return parseTime(outTime, "{y}/{m}/{d}");
  }

  if (time.getFullYear() != outTime.getFullYear()) {
    return parseTime(outTime, "{y}/{m}/{d}");
  }

  if (time.getMonth() != outTime.getMonth()) {
    return parseTime(outTime, "{m}/{d}");
  }

  if (time.getDate() != outTime.getDate()) {
    let day = outTime.getDate() - time.getDate();
    if (day == -1) {
      return parseTime(outTime, "昨天 {h}:{i}");
    }

    if (day == -2) {
      return parseTime(outTime, "前天 {h}:{i}");
    }

    return parseTime(outTime, "{m}-{d}");
  }

  if (time.getHours() != outTime.getHours()) {
    return parseTime(outTime, "{h}:{i}");
  }

  let minutes = outTime.getMinutes() - time.getMinutes();
  if (minutes == 0) {
    return "刚刚";
  }

  minutes = Math.abs(minutes);
  return `${minutes}分钟前`;
}

export function getSort (fn) {
  return function (a, b) {
    let ret = 0;

    if (fn.call(this, a, b)) {
      ret = -1;
    } else if (fn.call(this, b, a)) {
      ret = 1;
    }

    return ret;
  };
}

/**
 * 批量排序
 *
 * @param {*} arr
 */
export function getMutipSort (arr) {
  return function (a, b) {
    let tmp;
    let i = 0;

    do {
      tmp = arr[i++](a, b);
    } while (tmp == 0 && i < arr.length);

    return tmp;
  };
}

/**
 * Url 替换超链接
 *
 * @param {String} text 文本
 * @param {String} color 超链接颜色
 */
export function textReplaceLink (text, color = "#409eff") {
  let exp =
    /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gi;
  return text.replace(
    exp,
    `<a href='$1' target="_blank" style="color:${color};text-decoration: revert;">$1</a >`
  );
}

/**
 * 防抖
 *
 * @param {*} func
 * @param {*} wait
 * @param {*} immediate
 * @returns
 */
export function debounce (func, wait, immediate) {
  let timeout;

  return function () {
    let context = this;
    let args = arguments;

    if (timeout) clearTimeout(timeout); // timeout 不为null
    if (immediate) {
      let callNow = !timeout; // 第一次会立即执行，以后只有事件执行后才会再次触发
      timeout = setTimeout(function () {
        timeout = null;
      }, wait);
      if (callNow) func.apply(context, args);
    } else {
      timeout = setTimeout(function () {
        func.apply(context, args);
      }, wait);
    }
  };
}