"use client";

import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";

async function fetchJson<T>(url: string, init?: RequestInit): Promise<T> {
  const res = await fetch(url, init);
  if (!res.ok) {
    const body = await res.json().catch(() => ({}));
    throw new Error(body.error || `Request failed: ${res.status}`);
  }
  return res.json();
}

export function useInvitations() {
  return useQuery({
    queryKey: ["invitations"],
    queryFn: () => fetchJson("/api/org/invitations"),
  });
}

export function useCreateInvitation() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (data: { email: string; role?: string }) =>
      fetchJson("/api/org/invitations", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(data),
      }),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ["invitations"] });
    },
  });
}

export function useRevokeInvitation() {
  const qc = useQueryClient();
  return useMutation({
    mutationFn: (id: string) =>
      fetchJson(`/api/org/invitations/${id}`, { method: "DELETE" }),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ["invitations"] });
    },
  });
}