import { useEffect } from 'react';
import { Location } from 'fhir/r4';
import { useWebSocketServiceContext } from '../services';

interface UseLocationWebSocketOptions {
    location?: Location;
    locationId?: string;
    isOpen?: boolean;
    onUpdate: (location: Location) => void;
    onDelete: () => void;
}

export const useFhirLocationTargetedBroadcast = ({
                                                     location,
                                                     locationId,
                                                     isOpen = true,
                                                     onUpdate,
                                                     onDelete
                                                 }: UseLocationWebSocketOptions) => {
    const { subscribe, unsubscribe } = useWebSocketServiceContext();

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

        const handleLocationEvent = (cloudEvent: any) => {
            const locationPayload: Location = cloudEvent.data;
            const eventType = cloudEvent.type;

            const targetId = locationId || location.id;

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

        subscribe('com.akashichealthrecords.fhir.location.updated', handleLocationEvent);
        subscribe('com.akashichealthrecords.fhir.location.deleted', handleLocationEvent);

        return () => {
            unsubscribe('com.akashichealthrecords.fhir.location.updated', handleLocationEvent);
            unsubscribe('com.akashichealthrecords.fhir.location.deleted', handleLocationEvent);
        };
    }, [location, locationId, isOpen, onUpdate, onDelete, subscribe, unsubscribe]);
};