/*
Copyright (C) 2020 Yarmo Mackenbach

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
details.

You should have received a copy of the GNU Affero General Public License along
with this program. If not, see <https://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

If your software can interact with users remotely through a computer network,
you should also make sure that it provides a way for users to get its source.
For example, if your program is a web application, its interface could display
a "Source" link that leads users to an archive of the code. There are many
ways you could offer source, and different solutions will be better for different
programs; see section 13 for the specific requirements.

You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary. For
more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.
*/
const validUrl = require('valid-url')
const { serviceprovidersList, serviceproviders } = require('./serviceproviders')

const matchSp = (uri) => {
  let matches = [], sp

  serviceprovidersList.forEach((spName, i) => {
    sp = serviceproviders[spName]
    if (sp.reURI.test(uri)) {
      matches.push(sp.processURI(uri))
    }
  })

  return matches
}

const verify = (uri, fingerprint, opts) => {
  if (!opts) { opts = {} }

  if (!validUrl.isUri(uri)) {
    throw new Error('Not a valid URI')
  }

  const spMatches = matchSp(uri)

  if ('returnMatchesOnly' in opts && opts.returnMatchesOnly) {
    return spMatches
  }
}

exports.verify = verify
exports.serviceproviders = serviceproviders
exports.serviceprovidersList = serviceprovidersList