import { z } from "zod";
import { auth } from "@/app/(auth)/auth";
import { resolveAgentWorkflowComposerSelections } from "@/lib/agents/workflow-composer";
import { AGENT_WORKFLOW_UI_CONFIG_KEY, normalizeAgentWorkflowUiConfig } from "@/lib/agents/workflow-ui-config";
import { getSystemSetting } from "@/lib/db/queries";

const selectionsSchema = z.record(z.string().max(160), z.string().max(8192))
  .refine((selections) => Object.keys(selections).length <= 100);

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

  const selections = selectionsSchema.safeParse(await request.json().catch(() => null));
  if (!selections.success) return Response.json({ error: "风格模板选择无效" }, { status: 400 });

  const setting = await getSystemSetting({ key: AGENT_WORKFLOW_UI_CONFIG_KEY });
  const config = normalizeAgentWorkflowUiConfig(setting?.value);
  return Response.json({ selections: resolveAgentWorkflowComposerSelections({ config, selections: selections.data }) });
}