// global_config.js

import PromiseRouter from '../PromiseRouter';
import * as middleware from "../middlewares";

export class GlobalConfigRouter extends PromiseRouter {
  getGlobalConfig(req) {
    return req.config.database.adaptiveCollection('_GlobalConfig')
      .then(coll => coll.find({ '_id': 1 }, { limit: 1 }))
      .then(results => {
        if (results.length != 1) {
          // If there is no config in the database - return empty config.
          return { response: { params: {} } };
        }
        let globalConfig = results[0];
        return { response: { params: globalConfig.params } };
      });
  }

  updateGlobalConfig(req) {
    return req.config.database.adaptiveCollection('_GlobalConfig')
      .then(coll => coll.upsertOne({ _id: 1 }, { $set: req.body }))
      .then(() => ({ response: { result: true } }));
  }

  mountRoutes() {
    this.route('GET', '/config', req => { return this.getGlobalConfig(req) });
    this.route('PUT', '/config', middleware.promiseEnforceMasterKeyAccess, req => { return this.updateGlobalConfig(req) });
  }
}

export default GlobalConfigRouter;