require "study_engine/config"
require "cat_engine/question"

module StudyEngine
  class AssessmentsController < ::StudyEngine::ApplicationController
    expose :assessment, :welcome_content, :events, :enabled_application_methods

    def index
      @welcome_content = StudyEngine.welcome_content
      @assessment = BeginAssessmentForm.new
      assessment.coordinator = current_user
    end

    def create
      @assessment = BeginAssessmentForm.new(params[:assessment])
      assessment.coordinator = current_user
      if assessment.save
        if assessment.by_url?
          flash.now.notice = "An assessment has been created."
          ::StudyEngine::Mailer.assessment_url_notification(current_user.email, assessment).deliver_now
          render :create
        elsif assessment.by_mail?
          flash.now.notice = "An assessment has been created."
          render :create
        else
          redirect_to assessment
        end
      elsif assessment.restartable?
        flash.now.alert = "Partial assessment data already exists for this ID number and event.  Would you like to resume or restart?"
        render :restart
      else
        flash.now.alert = assessment.errors.full_messages.join(", ")
        render :index
      end
    end

    def show
      if assessment.complete?
        if assessment.completed_at.nil?
          assessment.touch :completed_at
          send_notification
        end
        render :complete
      else
        render :show
      end
    end

    def edit
      redirect_to assessment
    end

    def update
      assessment.save_answer Answer.new(question: CatEngine::Question.new(params[:cat_engine_question]))
      redirect_to assessment
    end

    def timeout
      @assessment = BeginAssessmentForm.new_from_model(assessment)
      flash.now.alert = "Assessment timed out due to inactivity.  Would you like to resume or restart?"
      render :restart
    end

    def notification
      send_notification
      head :ok
    end

    private

    def send_notification
      if email = assessment.coordinator_email
        ::StudyEngine::Mailer.assessment_recorded_notification(email, assessment).deliver_now
      end
    end

    def assessment
      @assessment ||= Assessment.find(params[:id])
    end

    def current_user_required?
      return true unless %w[show update notification].include?(params[:action]) && assessment.by_url?
    end

    def events
      StudyEngine.events
    end

    def enabled_application_methods
      StudyEngine.enabled_application_methods
    end
  end
end