import { NextRequest, NextResponse } from "next/server";
import { getPosts, getPostsPaginated, createPost, deletePost } from "@/lib/store";
import { requireAuth, parseBody } from "@/lib/http";
import { createPostSchema } from "@/lib/validation";

export async function GET(request: NextRequest) {
  const deny = await requireAuth();
  if (deny) return deny;

  const { searchParams } = new URL(request.url);

  // 如果有分页参数，使用分页查询
  if (searchParams.has("page") || searchParams.has("search") || searchParams.has("status") || searchParams.has("sortBy")) {
    const result = await getPostsPaginated({
      page: Number(searchParams.get("page")) || 1,
      pageSize: Number(searchParams.get("pageSize")) || 20,
      status: searchParams.get("status") as "draft" | "published" | undefined,
      search: searchParams.get("search") || undefined,
      sortBy: (searchParams.get("sortBy") as "date" | "createdAt" | "title" | "readingTime") || "createdAt",
      sortDir: (searchParams.get("sortDir") as "asc" | "desc") || "desc",
    });
    return NextResponse.json(result);
  }

  // 兼容旧接口：无参数时返回全量
  return NextResponse.json(await getPosts());
}

export async function POST(request: NextRequest) {
  const deny = await requireAuth();
  if (deny) return deny;
  const parsed = await parseBody(request, createPostSchema);
  if (!parsed.ok) return parsed.response;
  const post = await createPost(parsed.data);
  return NextResponse.json(post, { status: 201 });
}

export async function DELETE(request: NextRequest) {
  const deny = await requireAuth();
  if (deny) return deny;
  const { searchParams } = new URL(request.url);
  const id = searchParams.get("id");
  if (!id) return NextResponse.json({ error: "缺少 id" }, { status: 400 });
  return NextResponse.json({ ok: await deletePost(id) });
}