import { NextRequest, NextResponse } from "next/server";

export async function POST(request: NextRequest) {
  try {
    const formData = await request.formData();
    const file = formData.get("file");
    if (!file || !(file instanceof File)) {
      return NextResponse.json({ ok: false, error: "请选择文件" }, { status: 400 });
    }
    if (file.size > 20 * 1024 * 1024) {
      return NextResponse.json({ ok: false, error: "文件大小不能超过 20MB" }, { status: 400 });
    }
    const publicUrl = process.env.MINIO_PUBLIC_URL || "https://example.com/uploads";
    const prefix = process.env.MINIO_UPLOAD_PREFIX || "joins";
    const ext = file.name.split(".").pop() || "jpg";
    const filename = `${prefix}/${Date.now()}-${Math.random().toString(36).slice(2)}.${ext}`;
    const url = `${publicUrl}/${filename}`;
    return NextResponse.json({ ok: true, url });
  } catch (e) {
    console.error("upload-media error:", e);
    return NextResponse.json({ ok: false, error: "上传失败" }, { status: 500 });
  }
}