"use server";

import { requirePermission, PermissionDeniedError } from "@/shared/lib/auth-guard";
import { Permissions } from "@/shared/types/permissions";
import { suggestKnowledgePoints } from "./ai-suggest";
import type { ActionState, LessonPlanDocument } from "./types";

export async function suggestKnowledgePointsAction(input: {
  doc: LessonPlanDocument;
  textbookId?: string;
  chapterId?: string;
}): Promise<
  ActionState<{
    suggestions: { id: string; name: string; reason: string }[];
  }>
> {
  try {
    await requirePermission(Permissions.LESSON_PLAN_READ);
    await requirePermission(Permissions.AI_CHAT);
    const suggestions = await suggestKnowledgePoints(
      input.doc,
      input.textbookId,
      input.chapterId,
    );
    return { success: true, data: { suggestions } };
  } catch (e) {
    if (e instanceof PermissionDeniedError)
      return { success: false, message: e.message };
    return { success: false, message: "AI 推荐失败，请检查 AI Provider 配置" };
  }
}