import SparkMD5 from "spark-md5";

var tool = {
  setCookie: function (c_name, value, expiredays, path) {
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + expiredays);
    document.cookie =
      c_name +
      "=" +
      escape(value) +
      (expiredays == null ? "" : ";expires=" + exdate.toGMTString()) +
      (path ? ";path=" + path : "");
  },
  getCookie: function (c_name) {
    if (document.cookie.length > 0) {
      var c_start = document.cookie.indexOf(c_name + "=");
      if (c_start != -1) {
        c_start = c_start + c_name.length + 1;
        var c_end = document.cookie.indexOf(";", c_start);
        if (c_end == -1) c_end = document.cookie.length;
        return unescape(document.cookie.substring(c_start, c_end));
      }
    }
    return "";
  },
  delCookie: function (name) {
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval = tool.getCookie(name);
    if (cval != null)
      document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
  },
  // 强制保留2位小数，如：2，会在2后面补上00.即2.00
  toDecimal2(x) {
    var f;
    f = parseFloat(x);
    if (isNaN(f)) {
      return false;
    }
    f = Math.round(x * 100) / 100;
    var s = f.toString();
    var rs = s.indexOf(".");
    if (rs < 0) {
      rs = s.length;
      s += ".";
    }
    while (s.length <= rs + 2) {
      s += "0";
    }
    return s;
  },
};

/**
 * 获取一个UUID
 * @param len
 * @param radix
 * @returns {string}
 */
export function uuid(len = 32, radix = 16) {
  const chars =
    "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".split("");
  let uuid = [],
    i;
  radix = radix || chars.length;

  if (len) {
    // Compact form
    for (i = 0; i < len; i++) uuid[i] = chars[0 | (Math.random() * radix)];
  } else {
    // rfc4122, version 4 form
    let r;

    // rfc4122 requires these characters
    uuid[8] = uuid[13] = uuid[18] = uuid[23] = "-";
    uuid[14] = "4";

    // Fill in random data.  At i==19 set the high bits of clock sequence as
    // per rfc4122, sec. 4.1.5
    for (i = 0; i < 36; i++) {
      if (!uuid[i]) {
        r = 0 | (Math.random() * 16);
        uuid[i] = chars[i === 19 ? (r & 0x3) | 0x8 : r];
      }
    }
  }

  return uuid.join("");
}

export function getFileMd5(file, chunkSize) {
  return new Promise((resolve, reject) => {
    let blobSlice =
      File.prototype.slice ||
      File.prototype.mozSlice ||
      File.prototype.webkitSlice;
    let chunks = Math.ceil(file.size / chunkSize);
    let currentChunk = 0;
    let spark = new SparkMD5.ArrayBuffer();
    let fileReader = new FileReader();
    fileReader.onload = function (e) {
      spark.append(e.target.result);
      currentChunk++;
      if (currentChunk < chunks) {
        loadNext();
      } else {
        const md5 = spark.end();
        resolve(md5);
      }
    };
    fileReader.onerror = function (e) {
      reject(e);
    };

    function loadNext() {
      let start = currentChunk * chunkSize;
      let end = start + chunkSize;
      if (end > file.size) {
        end = file.size;
      }
      fileReader.readAsArrayBuffer(blobSlice.call(file, start, end));
    }
    loadNext();
  });
}

export function worksDataBytool(res, value, linkList) {
  let arr = [];
  res.forEach((item) => {
    const obj = {
      baseType: item.typeField.baseType,
      order: 0,
      typeFieldId: item.typeField.id,
      sequenceNum: item.config ? JSON.parse(item.config).uuid : "",
      newDataAndFileLinkListRequest: [],
    };
    for (let k in value) {
      if (item.typeField.refCode === k) {
        if (typeof value[k] == "object") {
          obj.strValue = JSON.stringify(value[k]);
          obj.newDataAndFileLinkListRequest = linkList;
        } else {
          obj.strValue = value[k];
        }
      }
    }
    if (obj.strValue) {
      arr.push(obj);
    }
  });
  return arr;
}

export function resultsBytool(res, value) {
  let obj = {};
  res.forEach((item, i) => {
    item.sequenceNum = item.config ? JSON.parse(item.config).uuid : "";
    value.forEach((e) => {
      if (item.sequenceNum == e.sequenceNum) {
        try {
          const val = JSON.parse(e.value);
          obj[item.typeField.refCode] = val;
        } catch (error) {
          obj[item.typeField.refCode] = e.value;
        }
      }
    });
  });
  return obj;
}

export function UpdateworksDataBytool(initData, res, value, linkList) {
  let arr = [];
  for (let i = 0; i < initData.length; i++) {
    const ele = initData[i];
    for (let j = 0; j < res.length; j++) {
      const item = res[j];
      if (item.sequenceNum == ele.sequenceNum) {
        item.refCode = ele.typeField.refCode;
      }
    }
  }
  res.forEach((item) => {
    const obj = {
      baseType: item.baseType,
      order: 0,
      id: item.id,
      typeFieldId: item.fieldId,
      sequenceNum: item.sequenceNum,
      setDataAndFileLinkListRequest: [],
    };
    for (let k in value) {
      if (item.refCode === k) {
        if (typeof value[k] == "object") {
          obj.strValue = JSON.stringify(value[k]);
          obj.setDataAndFileLinkListRequest = linkList;
        } else {
          obj.strValue = value[k].toString();
        }
      }
    }
    if (obj.strValue) {
      arr.push(obj);
    }
  });
  return arr;
}

export default {
  ...tool,
  uuid,
  getFileMd5,
  worksDataBytool,
  UpdateworksDataBytool,
  resultsBytool,
};