import { useState } from "react";
import { toast } from "sonner";
import { useListServiceContext, usePatientServiceContext } from "../../../services";
import { useFhirClinicalLists } from "../../../hooks";
import { Button } from "../../../components/ui/button";
import { describeWriteFailure } from "../../../utils/fetchFailureMessage";

/** The "none" answer for an empty family list, recorded as a nil-known list like no known family history. */
export const NobodyToAdd = () => {
  const { patientState } = usePatientServiceContext();
  const { confirmNoRelatedPersons } = useListServiceContext();
  const { hasConfirmedNoRelatedPersons } = useFhirClinicalLists();
  const [saving, setSaving] = useState(false);

  if (hasConfirmedNoRelatedPersons) {
    return <p className="text-muted-foreground text-sm">You said there is nobody to add for now. You can add someone any time.</p>;
  }

  const confirm = async () => {
    if (!patientState) {
      toast.error("Patient context is not available yet.");
      return;
    }
    setSaving(true);
    try {
      await confirmNoRelatedPersons(patientState);
      toast.success("Recorded that you have nobody to add.");
    } catch (failure) {
      console.error("Failed to record nobody to add:", failure);
      toast.error(describeWriteFailure(failure, "Unable to record that you have nobody to add"));
    } finally {
      setSaving(false);
    }
  };

  return (
    <Button variant="outline" className={saving ? "btn-busy" : undefined} onClick={confirm} disabled={saving}>
      Nobody to add
    </Button>
  );
};