import { BYTE_UNITS } from '../consts/Util';
import {
  CreateFieldType,
  DataTypeEnum,
  Field,
} from '../pages/collections/Types';

/**
 * transform large capacity to capacity in b.
 * @param capacity like: 10g, 10gb, 10m, 10mb, 10k, 10kb, 10b,
 * @return number
 */
export const parseByte = (capacity?: string | number): number => {
  // if it's number return it
  if (!isNaN(Number(capacity))) {
    return capacity as number;
  }
  // capacity is '' or 0 or undefined
  if (!capacity) {
    return 0;
  }
  let lowerCapacity = (capacity as string).toLowerCase();
  const units = BYTE_UNITS;
  const isAlpha = /[a-zA-Z]/;
  const lastStr = lowerCapacity.charAt(lowerCapacity.length - 1);
  const secLastStr = lowerCapacity.charAt(lowerCapacity.length - 2);

  // if last two alpha is string, like: mb gb kb.
  //  delete last alpha b
  if (isAlpha.test(lastStr) && isAlpha.test(secLastStr)) {
    lastStr === 'b' &&
      (lowerCapacity = lowerCapacity.slice(0, lowerCapacity.length - 1));
  }

  const suffix = lowerCapacity.charAt(lowerCapacity.length - 1);
  const digitsPart = lowerCapacity.slice(0, lowerCapacity.length - 1);
  if (units[suffix]) {
    return Number(digitsPart) * units[suffix];
  }
  throw new Error(
    'The specified value for memory ({0}) should specify the units. The postfix should be one of the `b` `k` `m` `g` characters'
  );
};

/**
 *
 * @param search ?name=czz&age=18
 * @returns  {name:'czz',age:'18'}
 */
export const parseLocationSearch = (search: string) => {
  const pairs = search.substring(1).split('&');
  let obj: any = {};

  for (let i in pairs) {
    if (pairs[i] === '') continue;

    const pair = pairs[i].split('=');
    obj[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
  }

  return obj;
};

export const getEnumKeyByValue = (enumObj: any, enumValue: any) => {
  const match = Object.entries(enumObj).find(
    ([, value]) => value === enumValue
  );

  if (match) {
    const [key] = match;
    return key;
  }

  return '--';
};

/**
 *
 * @param obj e.g. {name: 'test'}
 * @returns key value pair, e.g. [{key: 'name', value: 'test'}]
 */
export const getKeyValuePairFromObj = (
  obj: { [key in string]: any }
): { key: string; value: any }[] => {
  const pairs: { key: string; value: string }[] = Object.entries(obj).map(
    ([key, value]) => ({
      key,
      value: value as string,
    })
  );
  return pairs;
};

export const getKeyValueListFromJsonString = (
  json: string
): { key: string; value: string }[] => {
  try {
    const obj = JSON.parse(json);
    const pairs = getKeyValuePairFromObj(obj);

    return pairs;
  } catch (err) {
    throw err;
  }
};

// BinarySubstructure includes Superstructure and Substructure
export const checkIsBinarySubstructure = (metricLabel: string): boolean => {
  return metricLabel === 'Superstructure' || metricLabel === 'Substructure';
};

export const getCreateFieldType = (config: Field): CreateFieldType => {
  if (config.is_primary_key) {
    return 'primaryKey';
  }

  if (config.isDefault) {
    return 'defaultVector';
  }

  const vectorTypes = [DataTypeEnum.BinaryVector, DataTypeEnum.FloatVector];
  if (vectorTypes.includes(config.data_type)) {
    return 'vector';
  }

  return 'number';
};

// Trim the address
export const formatAddress = (address: string): string => address.trim();