import { NextResponse } from "next/server";
import { db } from "@/lib/db";
import { generatedImage } from "@/lib/db/schema";
import { eq, sql } from "drizzle-orm";
import { auth } from "@/app/(auth)/auth";

// 缓存配置：每天中午12点更新（约12小时缓存）
export const revalidate = 43200; // 12小时，单位秒

export async function GET() {
  try {
    const session = await auth();

    if (!session?.user?.id) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }

    const userId = session.user.id;

    // 查询该用户的生图总数
    const result = await db
      .select({ count: sql<number>`count(*)::int` })
      .from(generatedImage)
      .where(eq(generatedImage.userId, userId));

    const totalImages = result[0]?.count ?? 0;

    return NextResponse.json({
      totalImages,
      updatedAt: new Date().toISOString(),
    });
  } catch (error) {
    console.error("[User Image Stats API] Error:", error);
    return NextResponse.json(
      { error: "Failed to fetch image stats" },
      { status: 500 }
    );
  }
}