import { useEffect } from 'react';
import { MedicationAdministration } from 'fhir/r4';
import { usePatientServiceContext, useWebSocketServiceContext } from '../services';

interface UseMedicationAdministrationWebSocketOptions {
    medicationAdministration?: MedicationAdministration;
    medicationAdministrationId?: string;
    isOpen?: boolean;
    onUpdate: (medicationAdministration: MedicationAdministration) => void;
    onDelete: () => void;
}

export const useFhirMedicationAdministrationTargetedBroadcast = ({
                                                                     medicationAdministration,
                                                                     medicationAdministrationId,
                                                                     isOpen = true,
                                                                     onUpdate,
                                                                     onDelete
                                                                 }: UseMedicationAdministrationWebSocketOptions) => {
    const { subscribe, unsubscribe } = useWebSocketServiceContext();
    const { patientState } = usePatientServiceContext();

    useEffect(() => {
        if (!patientState || !medicationAdministration || !isOpen) {
            return;
        }

        const handleMedicationAdministrationEvent = (cloudEvent: any) => {
            const medicationAdministrationPayload: MedicationAdministration = cloudEvent.data;
            const eventType = cloudEvent.type;

            const targetId = medicationAdministrationId || medicationAdministration.id;

            if (medicationAdministrationPayload.id === targetId) {
                switch (eventType) {
                    case 'com.akashichealthrecords.fhir.medicationadministration.updated':
                        onUpdate(medicationAdministrationPayload);
                        break;
                    case 'com.akashichealthrecords.fhir.medicationadministration.deleted':
                        onDelete();
                        break;
                }
            }
        };

        subscribe('com.akashichealthrecords.fhir.medicationadministration.updated', handleMedicationAdministrationEvent);
        subscribe('com.akashichealthrecords.fhir.medicationadministration.deleted', handleMedicationAdministrationEvent);

        return () => {
            unsubscribe('com.akashichealthrecords.fhir.medicationadministration.updated', handleMedicationAdministrationEvent);
            unsubscribe('com.akashichealthrecords.fhir.medicationadministration.deleted', handleMedicationAdministrationEvent);
        };
    }, [patientState, medicationAdministration, medicationAdministrationId, isOpen, onUpdate, onDelete, subscribe, unsubscribe]);
};