addEvent.js

class Events {
  /**
   * Adds an event to the database
   *
   * @param {object} request - The request object
   * @param {object} response - The response object
   *
   * @returns {object} The event object
   */
  static addEvent(request, response) {
    const { errors, valid } = validateAddEvent(request.body);
    if (!valid) {
      return response.status(400).json(errors);
    }
    return Center.findOne({
      where: {
        name: request.body.venue
      }
    }).then((foundCenter) => {
      if (!foundCenter) {
        return response.status(400).json({
          message: 'No center found with this name.'
        });
      }
      const duration = timeDifference(
        request.body.startTime,
        request.body.endTime
      );

      const convertStartTime = new Date(request.body.startTime)
        .toLocaleTimeString('en-US', { hour12: false });
      const convertEndTime = new Date(request.body.endTime)
        .toLocaleTimeString('en-US', { hour12: false });

      const eventDuration =
      `${duration.hours}hour(s), ${duration.minutes}minutes`;

      return Event.findAll({
        where: {
          date: request.body.date,
          venue: foundCenter.dataValues.id
        }
      }).then((foundEvent) => {
        for (let index = 0; index < foundEvent.length; index += 1) {
          const event = foundEvent[index];
          if ((convertStartTime >= event.dataValues.startTime
            && convertStartTime <= event.dataValues.endTime) ||
        (convertEndTime <= event.dataValues.endTime
          && convertEndTime >= event.dataValues.startTime)) {
            return response.status(409).json({
              message:
              `Sorry, you cannot book an event at this
 time because there will be an event
 holding between ${event.dataValues.startTime} and ${event.dataValues.endTime}.`
            });
          }
        }

        return Event.create({
          name: request.body.name,
          image: request.body.image,
          date: request.body.date,
          startTime: request.body.startTime,
          endTime: request.body.endTime,
          duration: eventDuration,
          organizer: request.userDetails.id,
          venue: foundCenter.dataValues.id
        }).then((event) => {
          return response.status(201).json({
            message: 'Event created successfully.',
            eventDetails: {
              name: event.name,
              image: event.image,
              date: event.date,
              startTime: event.startTime,
              endTime: event.endTime,
              duration: event.duration,
              venue: foundCenter.dataValues.name
            }
          });
        });
      });
    }).catch((err) => {
      return response.status(500).json({
        message: serverError
      });
    });
  }
}