/* global storage: false */
/* global Signal: false */

const LokiAppDotNetAPI = require('./loki_app_dot_net_api');

const DEVICE_MAPPING_ANNOTATION_KEY = 'network.loki.messenger.devicemapping';

// returns the LokiFileServerAPI constructor with the serverUrl already consumed
function LokiFileServerAPIWrapper(serverUrl) {
  return LokiFileServerAPI.bind(null, serverUrl);
}

class LokiFileServerAPI {
  constructor(serverUrl, ourKey) {
    this.ourKey = ourKey;
    this._adnApi = new LokiAppDotNetAPI(ourKey);
    this._server = this._adnApi.findOrCreateServer(serverUrl);
  }

  async getUserDeviceMapping(pubKey) {
    const annotations = await this._server.getUserAnnotations(pubKey);
    const deviceMapping = annotations.find(
      annotation => annotation.type === DEVICE_MAPPING_ANNOTATION_KEY
    );
    return deviceMapping ? deviceMapping.value : null;
  }

  async updateOurDeviceMapping() {
    const isPrimary = !storage.get('isSecondaryDevice');
    let authorisations;
    if (isPrimary) {
      authorisations = await Signal.Data.getGrantAuthorisationsForPrimaryPubKey(
        this.ourKey
      );
    } else {
      authorisations = [
        await Signal.Data.getGrantAuthorisationForSecondaryPubKey(this.ourKey),
      ];
    }
    return this._setOurDeviceMapping(authorisations, isPrimary);
  }

  async getDeviceMappingForUsers(pubKeys) {
    const users = await this._server.getUsersAnnotations(pubKeys);
    return users;
  }

  _setOurDeviceMapping(authorisations, isPrimary) {
    const content = {
      isPrimary: isPrimary ? '1' : '0',
      authorisations,
    };
    return this._server.setSelfAnnotation(
      DEVICE_MAPPING_ANNOTATION_KEY,
      content
    );
  }
}

module.exports = LokiFileServerAPIWrapper;