import { reverse, map, minBy, maxBy, get } from 'lodash';
import moment, { Moment } from 'moment';
import { ConstantListItem } from '@/common/types';
export function formatNumber(count: number) {
  let list = reverse(count.toString().split(''));
  if (list.length < 4) return count;
  const length = list.length;
  return reverse(
    map(list, (char: string, idx: number) => {
      return (idx + 1) % 3 === 0 && idx !== 0 && idx !== length
        ? `,${char}`
        : char;
    }),
  );
}
/**
 * 通过value获取数组某项的值
 * @param list
 * @param key
 * @param fieldNames
 */
export function getTextByList(
  list: ConstantListItem[],
  key: any,
  fieldNames?: {
    value?: string;
    label?: string;
  },
): any {
  let current = null;

  const defaultFieldNames = {
    value: 'value',
    label: 'label',
  };

  const newFieldNames = Object.assign(defaultFieldNames, fieldNames);

  list.forEach(item => {
    if (item[newFieldNames.value] === key) {
      current = item;
    }
  });

  if (current) {
    return current[newFieldNames.label];
  } else {
    return '';
  }
}
export const toFixed = (num: number, fractionDigits: number) => {
  const str = num?.toFixed ? num?.toFixed(fractionDigits) : '';
  return str.replace(/\.?0+$/g, '');
};
/**
 * 格式化时间
 * @param time 需要格式化的时间
 * @param formatStr 格式化的模板
 */
export function formatTime(
  time: number | moment.Moment,
  formatStr = 'YYYY-MM-DD HH:mm:ss',
): string {
  if (!time) return '';
  return moment(time).format(formatStr);
}
/**
 *
 * @param imgUrl 图片的url地址
 * @param name 图片的名称
 */
export function imgDownload(imgUrl: string, name?: string): void {
  let a = document.createElement('a');
  let event = new MouseEvent('click');
  if (name) {
    a.download = `${name}-${moment().format('YYYY-MM-DD HH:mm:ss')}.jpg`;
  } else {
    a.download = `down_load-${moment().format('YYYY-MM-DD HH:mm:ss')}.jpg`;
  }
  a.href = imgUrl;
  // 触发a的单击事件
  a.dispatchEvent(event);
  // 生成一个图片
  // const img = new Image();
  // const url = imgUrl.replace('http:', 'https:');
  // img.src = url;
  // img.crossOrigin = 'anonymous';
  // img.onerror = e => {
  //   console.error('图片转换格式失败');
  // };
  // img.onload = () => {
  //   // 创建一个canvas
  //   let canvas = document.createElement('canvas');
  //   canvas.width = img.width;
  //   canvas.height = img.height;
  //   // @ts-ignore
  //   canvas.getContext('2d').drawImage(img, 0, 0);
  //   const url = canvas.toDataURL('image/png');
  //   // @ts-ignore
  //   let a = document.createElement('a');
  //   let event = new MouseEvent('click');
  //   if (name) {
  //     a.download = `${name}-${moment().format('YYYY-MM-DD HH:mm:ss')}.jpg`;
  //   } else {
  //     a.download = `down_load-${moment().format('YYYY-MM-DD HH:mm:ss')}.jpg`;
  //   }
  //   a.href = url;
  //   // 触发a的单击事件
  //   a.dispatchEvent(event);
  // };
}
/**
 * 复制到剪切板
 * @param text 需要复制的文本
 */
export const copyText = (text: string) => {
  return new Promise((resolve, reject) => {
    let transfer = document.createElement('input');
    document.body.appendChild(transfer);
    transfer.value = text;
    transfer.focus();
    transfer.select();
    if (document.execCommand('copy')) {
      transfer.blur();
      resolve(true);
    } else {
      reject(false);
    }
    document.body.removeChild(transfer);
  }).catch(() => {
    console.log('复制到剪贴板失败了');
  });
};

export const downloadFile = (fileName: string, totken: string) => {
  function createObjectURL(object) {
    return window.URL
      ? window.URL.createObjectURL(object)
      : window.webkitURL.createObjectURL(object);
  }
  var xhr = new XMLHttpRequest();
  var formData = new FormData();
  xhr.open(
    'get',
    `${window.BASE_URL}/oss/v1/private/download/stream?fileName=${fileName}`,
  ); //url填写后台的接口地址，如果是post，在formData append参数
  xhr.setRequestHeader('authorization', `Bearer ${totken}`);
  xhr.responseType = 'blob';
  xhr.onload = function(e) {
    if (this.status == 200) {
      var blob = this.response;
      if (window.navigator.msSaveOrOpenBlob) {
        navigator.msSaveBlob(blob, fileName);
      } else {
        var a = document.createElement('a');
        var url = createObjectURL(blob);
        a.href = url;
        a.download = fileName;
        document.body.appendChild(a);
        a.click();
        window.URL.revokeObjectURL(url);
      }
    }
  };
  xhr.send(formData);
};

export const formatLnglatToArray = (lnglat: any) => {
  if (lnglat && Object.keys(lnglat).length) {
    return [lnglat.longitude, lnglat.latitude];
  } else {
    return lnglat;
  }
};
export const formatArrayToLnglat = (lnglat: any) => {
  if (lnglat && Array.isArray(lnglat) && lnglat.length > 0) {
    return { longitude: lnglat[0], latitude: lnglat[1] };
  } else if (lnglat && Object.keys(lnglat).length) {
    return lnglat;
  } else {
    return null;
  }
};