import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import {
  AcquisitionSlot,
  type AcquisitionSlotCreate,
  type AcquisitionSlotUpdate,
  cursorPage,
  type SlotStatus,
} from "@umt/contracts";
import { api } from "~/lib/api.ts";
import { getParsed, parseOrThrow } from "./library.ts";

// 收录目标 Slot:硬条件 / 软偏好 / 回退 / 升级阈值 / 完成条件(REQ §6.1)

export const slotKeys = {
  all: ["slots"] as const,
  list: (f: SlotFilters) => ["slots", "list", f] as const,
};

export type SlotFilters = { mediaEntityId?: string; status?: SlotStatus };

const Page = cursorPage(AcquisitionSlot);

export function useSlots(filters: SlotFilters, enabled = true) {
  return useQuery({
    queryKey: slotKeys.list(filters),
    enabled,
    queryFn: ({ signal }) => getParsed(Page, "/acquisition-slots", { ...filters, limit: 200 }, signal),
  });
}

function useInvalidate() {
  const qc = useQueryClient();
  return () => {
    void qc.invalidateQueries({ queryKey: slotKeys.all });
    void qc.invalidateQueries({ queryKey: ["library"] });
  };
}

export function useCreateSlot() {
  const done = useInvalidate();
  return useMutation({
    mutationFn: (body: AcquisitionSlotCreate) =>
      api.post<unknown>("/acquisition-slots", body).then((d) => parseOrThrow(AcquisitionSlot, d, "/acquisition-slots")),
    onSuccess: done,
  });
}

/** 规则修改带 expectedRevision(乐观并发);status 只由状态机推进 */
export function useUpdateSlot() {
  const done = useInvalidate();
  return useMutation({
    mutationFn: ({ id, ...body }: AcquisitionSlotUpdate & { id: string }) =>
      api
        .patch<unknown>(`/acquisition-slots/${id}`, body)
        .then((d) => parseOrThrow(AcquisitionSlot, d, "/acquisition-slots")),
    onSuccess: done,
  });
}