golos-lib-js/lib/utils/misc.js

Golos-js the JavaScript library with API for GOLOS blockchain

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.camelCase = camelCase;
exports.delay = delay;
exports.fitImageToSize = fitImageToSize;
exports.validateAccountName = validateAccountName;
async function delay(msec) {
  let getTimeoutId = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined;
  await new Promise((resolve, reject) => {
    const id = setTimeout(resolve, msec);
    if (getTimeoutId) getTimeoutId(id);
  });
}
const snakeCaseRe = /_([a-z])/g;
function camelCase(str) {
  return str.replace(snakeCaseRe, function (_m, l) {
    return l.toUpperCase();
  });
}
function validateAccountName(value) {
  let i, label, len, suffix;
  let res = {
    error: null,
    msg: ''
  };
  suffix = "Account name should ";
  if (!value) {
    res.msg = suffix + "not be empty.";
    res.error = 'account_name_should_not_be_empty';
    return res;
  }
  const length = value.length;
  if (length < 3) {
    res.msg = suffix + "be longer.";
    res.error = 'account_name_should_be_longer';
    return res;
  }
  if (length > 16) {
    res.msg = suffix + "be shorter.";
    res.error = 'account_name_should_be_shorter';
    return res;
  }
  if (/\./.test(value)) {
    suffix = "Each account segment should ";
  }
  const ref = value.split(".");
  for (i = 0, len = ref.length; i < len; i++) {
    label = ref[i];
    if (!/^[a-z]/.test(label)) {
      res.msg = suffix + "start with a letter.";
      res.error = 'each_account_segment_should_start_with_a_letter';
      return res;
    }
    if (!/^[a-z0-9-]*$/.test(label)) {
      res.msg = suffix + "have only letters, digits, or dashes.";
      res.error = 'each_account_segment_should_have_only_letters_digits_or_dashes';
      return res;
    }
    if (/--/.test(label)) {
      res.msg = suffix + "have only one dash in a row.";
      res.error = 'each_account_segment_should_have_only_one_dash_in_a_row';
      return res;
    }
    if (!/[a-z0-9]$/.test(label)) {
      res.msg = suffix + "end with a letter or digit.";
      res.error = 'each_account_segment_should_end_with_a_letter_or_digit';
      return res;
    }
    if (!(label.length >= 3)) {
      res.msg = suffix + "be longer";
      res.error = 'each_account_segment_should_be_longer';
      return res;
    }
  }
  return res;
}
function fitImageToSize(width, height, goodWidth, goodHeight) {
  let overWidth = width / goodWidth;
  let overHeight = height / goodHeight;
  if (overWidth <= 1 && overHeight <= 1) {
    return {
      width,
      height
    };
  }
  let proportion = width / height;
  if (overWidth > overHeight) {
    width = goodWidth;
    height = Math.round(width / proportion);
  } else {
    height = goodHeight;
    width = Math.round(height * proportion);
  }
  return {
    width,
    height
  };
}