Ruby code sample

appointments_controller.rb

class AppointmentsController < ApplicationController
  before_action :authenticate_user!
  before_action :set_appointment, only: [:approve, :decline]

  def create
    service = Service.find(params[:service_id])

    if current_user == service.user
      flash[:alert] = "You cannot book your own service."
    elsif current_user.stripe_id.blank?
      flash[:alert] = "Please update your payment method."
      return redirect_to payment_method_path
    else
      appt_start = Date.parse(appointment_params[:appt_start])
      start_time = Time.parse(appointment_params[:start_time])
      end_time = Time.parse(appointment_params[:end_time])
      # appt_end = Date.parse(appointment_params[:appt_end])
      # days = (appt_end - appt_start).to_i + 1
      duration = (end_time - start_time)/ 3600    # convert duration to hours by dividing by seconds

      @appointment = current_user.appointments.build(appointment_params)
      @appointment.service = service
      @appointment.price = service.price
      @appointment.total = service.price * duration
      @appointment.save
      charge(service, @appointment)
      flash[:notice] = "Booked Successfully!"
    end
    redirect_to service
  end

  def your_appointments
    @services = current_user.services
  end

  # list of services logged in user purchased
  def appointment_list
    @appts = current_user.appointments.order(appt_start: :asc)
  end  

  # list of services other users purchased from the logged in user
  def client_list
    @services = current_user.services
  end  

  # destroy/ cancel a booking
  def destroy
    appointment = Appointment.find(params[:id])
    service = appointment.service

    # send notification email
    if current_user != appointment.user  # if current user is not the guest
      AppointmentMailer.cancelled_by_vendor(appointment.user, service, appointment).deliver_later
    else 
      AppointmentMailer.cancelled_by_client(service.user.email, service, appointment).deliver_later
    end  

    appointment.destroy

    flash[:alert] = "This booking has been cancelled."
    redirect_back fallback_location: request.referer
  end  

  private
  
    def set_appointment
      @appointment = Appointment.find(params[:id])
    end

    def appointment_params
      params.require(:appointment).permit(:appt_start, :start_time, :end_time, :price, :total)
    end 
end