import { NextResponse } from "next/server";
import { z } from "zod";
import { auth } from "@/app/(auth)/auth";
import { getSystemSetting } from "@/lib/db/queries";
import {
  VIDEO_CANVAS_FUNCTION_CONFIG_KEY,
  defaultVideoCanvasFunctionConfig,
  normalizeVideoCanvasFunctionConfig,
} from "@/lib/video-canvas/config";
import { rankVideoCanvasEffectPresets } from "@/lib/video-canvas/video-effects";

export const dynamic = "force-dynamic";

const requestSchema = z.object({
  query: z.string().trim().max(100).default(""),
});

export async function POST(request: Request) {
  const session = await auth();
  if (!session?.user?.id) {
    return NextResponse.json({ success: false, error: "未登录" }, { status: 401 });
  }

  const parsed = requestSchema.safeParse(await request.json().catch(() => ({})));
  if (!parsed.success) {
    return NextResponse.json(
      { success: false, error: parsed.error.issues[0]?.message || "搜索参数无效" },
      { status: 400 },
    );
  }

  const setting = await getSystemSetting({
    key: VIDEO_CANVAS_FUNCTION_CONFIG_KEY,
  }).catch(() => null);
  const config = setting?.value
    ? normalizeVideoCanvasFunctionConfig(setting.value)
    : defaultVideoCanvasFunctionConfig;

  if (!config.enabled) {
    return NextResponse.json(
      { success: false, error: "视频画布功能已停用" },
      { status: 403 },
    );
  }

  return NextResponse.json({
    success: true,
    data: {
      presets: rankVideoCanvasEffectPresets(
        config.effectPresets,
        parsed.data.query,
      ),
      query: parsed.data.query,
    },
  });
}