require_dependency "renalware/patients"

module Renalware
  module Patients
    class PatientsController < BaseController
      include PresenterHelper
      include Renalware::Concerns::Pageable

      def index
        patients = patient_search.result.page(page).per(per_page)
        authorize patients
        render locals: {
          patients: present(patients, PatientPresenter)
        }
      end

      def search
        skip_authorization
        query = Patients::SearchQuery.new(term: params[:term])
        render json: query.call.to_json
      end

      def new
        patient = Patient.new
        authorize patient
        render locals: { patient: patient }
      end

      def create
        patient = Patient.new(patient_params)
        authorize patient

        if patient.save
          # Reload in order to let pg generate the secure id
          redirect_to_patient_demographics(patient.reload)
        else
          flash.now[:error] = failed_msg_for("patient")
          render :new, locals: { patient: patient }
        end
      end

      def edit
        authorize patient
        render locals: { patient: patient }
      end

      def update
        authorize patient
        if patient.update(patient_params)
          redirect_to_patient_demographics(patient)
        else
          flash.now[:error] = t(".failed", model_name: "patient")
          render :edit, locals: { patient: patient }
        end
      end

      def show
        authorize patient
        render locals: { patient: patient }
      end

      def patient
        @patient ||= Renalware::Patient.find_by!(secure_id: params[:id])
      end

      private

      def patient_params
        params
          .require(:patient)
          .permit(patient_attributes)
          .merge(document: document_attributes)
          .merge(by: current_user)
      end

      # rubocop:disable Metrics/MethodLength
      def patient_attributes
        [
          :nhs_number, :family_name, :given_name, :sex,
          :ethnicity_id, :born_on, :paediatric_patient_indicator, :cc_on_all_letters,
          :title, :suffix, :marital_status, :telephone1, :telephone2, :email, :religion_id,
          :language_id, :cc_decision_on,
          :local_patient_id, :local_patient_id_2, :local_patient_id_3,
          :local_patient_id_4, :local_patient_id_5, :external_patient_id,
          :send_to_renalreg, :send_to_rpv, :renalreg_decision_on, :rpv_decision_on,
          :renalreg_recorded_by, :rpv_recorded_by,
          current_address_attributes: address_params
        ]
      end
      # rubocop:enable Metrics/MethodLength

      def address_params
        [:id, :name, :organisation_name, :street_1, :street_2, :street_3, :county, :country,
          :town, :postcode, :telephone, :email]
      end

      def document_attributes
        params
          .require(:patient)
          .fetch(:document, nil)
          .try(:permit!)
      end

      def redirect_to_patient_demographics(patient)
        redirect_to patient, notice: success_msg_for("patient")
      end
    end
  end
end