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

interface UseCarePlanWebSocketOptions {
    carePlan?: CarePlan;
    carePlanId?: string;
    isOpen?: boolean;
    onUpdate: (carePlan: CarePlan) => void;
    onDelete: () => void;
}

export const useFhirCarePlanTargetedBroadcast = ({
                                                     carePlan,
                                                     carePlanId,
                                                     isOpen = true,
                                                     onUpdate,
                                                     onDelete
                                                 }: UseCarePlanWebSocketOptions) => {
    const { subscribe, unsubscribe } = useWebSocketServiceContext();
    const { patientState } = usePatientServiceContext();

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

        const handleCarePlanEvent = (cloudEvent: any) => {
            const carePlanPayload: CarePlan = cloudEvent.data;
            const eventType = cloudEvent.type;

            const targetId = carePlanId || carePlan.id;

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

        subscribe('com.akashichealthrecords.fhir.careplan.updated', handleCarePlanEvent);
        subscribe('com.akashichealthrecords.fhir.careplan.deleted', handleCarePlanEvent);

        return () => {
            unsubscribe('com.akashichealthrecords.fhir.careplan.updated', handleCarePlanEvent);
            unsubscribe('com.akashichealthrecords.fhir.careplan.deleted', handleCarePlanEvent);
        };
    }, [patientState, carePlan, carePlanId, isOpen, onUpdate, onDelete, subscribe, unsubscribe]);
};