const onDebounce = (fn, delay) => {
  let timer;
  return function(...args) {
    if (timer) {
      clearTimeout(timer);
    }
    timer = setTimeout(
      () => {
        typeof fn === "function" && fn.apply(null, [...args]);
        clearTimeout(timer);
      },
      delay > 0 ? delay : 100
    );
  };
};
const getQueryVariable = (variable) => {
  const query = window.location.search.substring(1);
  const vars = query.split("&");
  for (let i = 0; i < vars.length; i++) {
    const pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  }
  return "";
};
const loadImage = (url) => {
  return new Promise((resolve, reject) => {
    const newImg = new Image();
    newImg.src = url;
    newImg.onerror = () => {
      reject("failure");
    };
    newImg.onload = (e) => {
      resolve(e.target);
    };
  });
};
const isTencentCosPic = (url) => {
  return url.includes("wlmvp-cos.weiling.cn");
};
const isBase64 = (str) => {
  return str.indexOf("data:") != -1 && str.indexOf("base64") != -1;
};
const isLeapYear = (year) => {
  if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
    return true;
  }
  return false;
};
const removeEmptyField = (obj) => {
  let newObj = {};
  if (typeof obj === "string") {
    obj = JSON.parse(obj);
  }
  if (obj instanceof Array) {
    newObj = [];
  }
  if (obj instanceof Object) {
    for (const attr in obj) {
      if (obj[attr] !== "" && obj[attr] !== null && obj[attr] !== void 0) {
        if (obj[attr] instanceof Object) {
          if (JSON.stringify(obj[attr]) === "{}" || JSON.stringify(obj[attr]) === "[]") {
            continue;
          }
          newObj[attr] = removeEmptyField(obj[attr]);
        } else if (typeof obj[attr] === "string" && (obj[attr].indexOf("{") > -1 && obj[attr].indexOf("}") > -1 || obj[attr].indexOf("[") > -1 && obj[attr].indexOf("]") > -1)) {
          try {
            const attrObj = JSON.parse(obj[attr]);
            if (attrObj instanceof Object) {
              newObj[attr] = removeEmptyField(attrObj);
            }
          } catch (e) {
            newObj[attr] = obj[attr];
          }
        } else {
          newObj[attr] = obj[attr];
        }
      }
    }
  }
  return newObj;
};
export { isTencentCosPic as a, isBase64 as b, getQueryVariable as g, isLeapYear as i, loadImage as l, onDebounce as o, removeEmptyField as r };
