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

interface UseRiskAssessmentWebSocketOptions {
    riskAssessment?: RiskAssessment;
    riskAssessmentId?: string;
    isOpen?: boolean;
    onUpdate: (riskAssessment: RiskAssessment) => void;
    onDelete: () => void;
}

export const useFhirRiskAssessmentTargetedBroadcast = ({
                                                           riskAssessment,
                                                           riskAssessmentId,
                                                           isOpen = true,
                                                           onUpdate,
                                                           onDelete
                                                       }: UseRiskAssessmentWebSocketOptions) => {
    const { subscribe, unsubscribe } = useWebSocketServiceContext();
    const { patientState } = usePatientServiceContext();

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

        const handleRiskAssessmentEvent = (cloudEvent: any) => {
            const riskAssessmentPayload: RiskAssessment = cloudEvent.data;
            const eventType = cloudEvent.type;

            const targetId = riskAssessmentId || riskAssessment.id;

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

        subscribe('com.akashichealthrecords.fhir.riskassessment.updated', handleRiskAssessmentEvent);
        subscribe('com.akashichealthrecords.fhir.riskassessment.deleted', handleRiskAssessmentEvent);

        return () => {
            unsubscribe('com.akashichealthrecords.fhir.riskassessment.updated', handleRiskAssessmentEvent);
            unsubscribe('com.akashichealthrecords.fhir.riskassessment.deleted', handleRiskAssessmentEvent);
        };
    }, [patientState, riskAssessment, riskAssessmentId, isOpen, onUpdate, onDelete, subscribe, unsubscribe]);
};