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

interface UseScheduleWebSocketOptions {
    schedule?: Schedule;
    scheduleId?: string;
    isOpen?: boolean;
    onUpdate: (schedule: Schedule) => void;
    onDelete: () => void;
}

export const useFhirScheduleTargetedBroadcast = ({
                                                     schedule,
                                                     scheduleId,
                                                     isOpen = true,
                                                     onUpdate,
                                                     onDelete
                                                 }: UseScheduleWebSocketOptions) => {
    const { subscribe, unsubscribe } = useWebSocketServiceContext();

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

        const handleScheduleEvent = (cloudEvent: any) => {
            const schedulePayload: Schedule = cloudEvent.data;
            const eventType = cloudEvent.type;

            const targetId = scheduleId || schedule.id;

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

        subscribe('com.akashichealthrecords.fhir.schedule.updated', handleScheduleEvent);
        subscribe('com.akashichealthrecords.fhir.schedule.deleted', handleScheduleEvent);

        return () => {
            unsubscribe('com.akashichealthrecords.fhir.schedule.updated', handleScheduleEvent);
            unsubscribe('com.akashichealthrecords.fhir.schedule.deleted', handleScheduleEvent);
        };
    }, [schedule, scheduleId, isOpen, onUpdate, onDelete, subscribe, unsubscribe]);
};