import ClientBase from '../../clients/clientBase';
import MHSClient from '../../clients/sites/mhsClient';
import ChannelBase from '../channelBase';
import * as Joi from 'joi';

var logger = require('../../logger');

class MHSChannel extends ChannelBase {
  private schema = {
    currentIndex: Joi.number().integer().required(),
    totalQuestions: Joi.number().integer().required(),
    timeElapsed: Joi.number().required(),
    status: Joi.string().required(),
  };

  broadcastMessage(from: ClientBase|MHSClient|null, message: string) {
    const result = Joi.validate(JSON.parse(message), this.schema);

    if (result.error && from != null) {
      from.ws.send(`Failed to send the message, the data provided does not conform to the schema outlined by the channel type (mhs) - ${result.error}`);
      logger.errorLog.info(`Failed to send the message, the data provided does not conform to the schema outlined by the channel type (mhs)"`, {data: {clientId: from.id, message: message, error: result.error}});
    } else {
      for (let client of this.clients) {
        if (client != from && client.data.user_type == 'teacher') {
          client.ws.send(message);
          logger.accessLog.info(`sent to ${client.id}`, { data: { message: message }});
        } else {
          logger.accessLog.info(`client either not a teacher or is the sender: ${client.id}`, { data: { message: message }});
        }
      }
    }

    return {'status': 'success', 'message': `message broadcast complete`};
  }
};

module.exports = MHSChannel;
export default MHSChannel;