// Copyright or © or Copr. happyDNS (2020)
//
// contact@happydns.org
//
// This software is a computer program whose purpose is to provide a modern
// interface to interact with DNS systems.
//
// This software is governed by the CeCILL license under French law and abiding
// by the rules of distribution of free software.  You can use, modify and/or
// redistribute the software under the terms of the CeCILL license as
// circulated by CEA, CNRS and INRIA at the following URL
// "http://www.cecill.info".
//
// As a counterpart to the access to the source code and rights to copy, modify
// and redistribute granted by the license, users are provided only with a
// limited warranty and the software's author, the holder of the economic
// rights, and the successive licensors have only limited liability.
//
// In this respect, the user's attention is drawn to the risks associated with
// loading, using, modifying and/or developing or reproducing the software by
// the user in light of its specific status of free software, that may mean
// that it is complicated to manipulate, and that also therefore means that it
// is reserved for developers and experienced professionals having in-depth
// computer knowledge. Users are therefore encouraged to load and test the
// software's suitability as regards their requirements in conditions enabling
// the security of their systems and/or data to be ensured and, more generally,
// to use and operate it in the same conditions as regards security.
//
// The fact that you are presently reading this means that you have had
// knowledge of the CeCILL license and that you accept its terms.

export default {
  methods: {
    validateDomain (dn, subdomain) {
      let ret = null
      if (dn.length !== 0) {
        ret = dn.length >= 1 && dn.length <= 254

        if (ret) {
          const domains = dn.split('.')

          // Remove the last . if any, it's ok
          if (!subdomain && domains[domains.length - 1] === '') {
            domains.pop()
          }

          let newDomainState = ret
          domains.forEach(function (domain) {
            newDomainState &= domain.length >= 1 && domain.length <= 63
            newDomainState &= domain[0] !== '-' && domain[domain.length - 1] !== '-'
            newDomainState &= /^(\*|[a-zA-Z0-9]([a-zA-Z0-9-]?[a-zA-Z0-9])*)$/.test(domain)
          })
          ret = newDomainState > 0
        }
      }

      return ret
    }
  }
}
