import { useEffect } from "react";

/** UI-only input for opening help with a scoped reference; it never submits anything. */
export interface SupportTicketRequest {
  reference: string;
  viewer: string;
  organizationId: string;
  opening: string;
}

/** Reports the observed form outcome once, including a preserved draft or refusal to open. */
export type SupportTicketOutcome = "filled" | "existing-draft" | "refused";

type Taker = (request: SupportTicketRequest, onOutcome?: (outcome: SupportTicketOutcome) => void) => boolean;
let taker: Taker | undefined;

/** Opens help through the mounted widget; false means no widget accepted the request. */
export const requestSupportTicket = (request: SupportTicketRequest, onOutcome?: (outcome: SupportTicketOutcome) => void): boolean =>
  taker?.(request, onOutcome) ?? false;

/** The help widget's side: it takes requests while it is mounted, and stops when it unmounts. */
export const useSupportTicketRequests = (take: Taker): void => {
  useEffect(() => {
    taker = take;
    return () => {
      if (taker === take) taker = undefined;
    };
  }, [take]);
};