import { useCallback } from 'react';
import { environment } from '../environments/environment.ts';
import { useHttpService } from './HttpService.tsx';
import { announceSupportTicketRaised } from '../utils/supportTicketRaised.ts';

/**
 * A patient raising a support ticket about the product itself.
 *
 *     POST {fhirIdentityApi}/patient-support/tickets
 *     { subject, body, workspace, route, lastQuestion? }  ->  { ticketId, reference }
 *
 * Its own service rather than a flag on the practice one - see
 * `_TESTS/__tests__/aPatientTicketNeverReachesThePracticeSurface.test.ts`, which holds that fence.
 *
 * Nothing clinical travels. The context attached is the surface they were on, the route, and the
 * question the assistant failed to answer - their own words, never a capture of the screen.
 */

const API_URL = environment.fhirIdentityApi;

export type PatientSupportTicketDraft = {
    /** One line, in their own words. Required - a ticket with no subject cannot be triaged. */
    subject: string;
    /** What happened. */
    body: string;
    /** The surface in the reader's terms, which on this side is always the patient portal. */
    workspace: string;
    /** The in-app route, so whoever answers can open the same screen. */
    route: string;
    /** The last thing they asked the assistant, when there was one. */
    lastQuestion?: string;
};

export type PatientSupportTicketReceipt = {
    ticketId: string;
    /** The human reference to quote if they get in touch - "AKS-1042". */
    reference: string;
};

export const usePatientSupportService = () => {
    const { post } = useHttpService();

    const submitPatientSupportTicket = useCallback(
        async (draft: PatientSupportTicketDraft): Promise<PatientSupportTicketReceipt> => {
            const receipt = await post<PatientSupportTicketReceipt>(`${API_URL}/patient-support/tickets`, draft);
            announceSupportTicketRaised();
            return receipt;
        },
        [post],
    );

    return { submitPatientSupportTicket };
};