ui/lib/shared/addon/utils/parse-label.js

import  { validateChars, validateHostname } from 'ember-api-store/utils/validate';

export function parseKey(str) {
  str = str||'';

  const idx = str.indexOf('/');
  if ( idx > 0 ) {
    const prefix = str.substr(0,idx);
    const key = str.substr(idx+1);
    return {
      str,
      prefix,
      key
    }
  } else {
    return {
      str,
      prefix: null,
      key: str,
    }
  }
}

const MIDDLE_ONLY = ['_','.','-'];
export function validateIdentifier(str, displayKey, intl, errors=[]) {
  validateChars(str, {validChars: 'A-Za-z0-9_.-'}, displayKey, intl, errors);

  // Indentifier cannot begin with a hyphen
  let chr = str.slice(0,1);
  if ( MIDDLE_ONLY.includes(chr) ) {
    errors.push(intl.t(`validation.k8s.identifier.startLetter`, {key: displayKey}));
  }

  // Label cannot end with a hyphen
  chr = str.slice(-1);
  if ( MIDDLE_ONLY.includes(chr) ) {
    errors.push(intl.t(`validation.k8s.identifier.endLetter`, {key: displayKey}));
  }

  // Label must be 1-63 characters
  const min = 1;
  const max = 63;
  if ( str.length < min ) {
    errors.push(intl.t(`validation.k8s.identifier.emptyKey`, {key: displayKey, min: min}));
  } else if  ( str.length > max ) {
    errors.push(intl.t(`validation.k8s.identifier}.tooLongKey`, {key: displayKey, max: max}));
  }
}

export function validatePrefix(str, displayKey, intl, errors=[]) {
  const intlKey = intl.t('generic.key');
  const min = 1;
  const max = 253;

  if ( str.length < min ) {
    errors.push(intl.t(`validation.k8s.identifier.emptyPrefix`, {key: displayKey, min: min}));
  } else if  ( str.length > max ) {
    errors.push(intl.t(`validation.k8s.identifier}.tooLongPRefix`, {key: displayKey, max: max}));
  } else {
    validateHostname(str, intlKey, intl, errors);
  }
}

export function validateKey(str, intl, errors=[]) {
  const parts = parseKey(str);
  const intlKey = intl.t('generic.key');

  if ( parts.prefix ) {
    validatePrefix(parts.prefix, intlKey, intl, errors);
  }

  validateIdentifier(parts.key, intlKey, intl, errors);
}

export function validateValue(str, intl, errors=[]) {
  const intlKey = intl.t('generic.value');
  validateIdentifier(str, intlKey, intl, errors);
}