import { NextRequest, NextResponse } from "next/server";
import * as Minio from "minio";

// mc alias list myminio: http://minioweb.hackrobot.cn:9035
const MINIO_ENDPOINT = process.env.MINIO_ENDPOINT || "minioweb.hackrobot.cn";
const MINIO_PORT = parseInt(process.env.MINIO_PORT || "9035", 10);
const MINIO_USE_SSL = process.env.MINIO_USE_SSL === "true";
const MINIO_BUCKET = process.env.MINIO_BUCKET || "hackrobot";
const MINIO_ACCESS_KEY = process.env.MINIO_ACCESS_KEY || "6i56HHfg4zPfYItCZtnp";
const MINIO_SECRET_KEY = process.env.MINIO_SECRET_KEY || "vDJCqEit3ejH5UmWKAZnvqhziNfbVsoOlBW12G8Q";
// 公开访问 URL（https 无端口），API 上传用 9035
const MINIO_PUBLIC_URL =
  process.env.MINIO_PUBLIC_URL ||
  `https://${MINIO_ENDPOINT}/${MINIO_BUCKET}`;

export async function POST(request: NextRequest) {
  try {
    const form = await request.formData();
    const file = form.get("file");
    const fileObj =
      file instanceof File ? file : file instanceof Blob ? file : null;

    if (!fileObj || fileObj.size === 0) {
      return NextResponse.json(
        { ok: false, error: "请选择文件" },
        { status: 400 }
      );
    }

    if (fileObj.size > 20 * 1024 * 1024) {
      return NextResponse.json(
        { ok: false, error: "文件大小不能超过 20MB" },
        { status: 400 }
      );
    }

    const client = new Minio.Client({
      endPoint: MINIO_ENDPOINT,
      port: MINIO_PORT,
      useSSL: MINIO_USE_SSL,
      accessKey: MINIO_ACCESS_KEY,
      secretKey: MINIO_SECRET_KEY,
      pathStyle: true,
      region: process.env.MINIO_REGION || "china",
    });

    const ext =
      (fileObj instanceof File ? fileObj.name : "").split(".").pop() ||
      (fileObj.type?.startsWith("video/") ? "mp4" : "jpg");
    const objectKey = `joins/${Date.now()}_${Math.random().toString(36).slice(2)}.${ext}`;

    const buffer = Buffer.from(await fileObj.arrayBuffer());
    const contentType =
      (fileObj as File).type || "application/octet-stream";

    await client.putObject(MINIO_BUCKET, objectKey, buffer, buffer.length, {
      "Content-Type": contentType,
    });

    const base = MINIO_PUBLIC_URL.replace(/\/$/, "");
    const url = `${base}/${objectKey}`;

    return NextResponse.json({ ok: true, url });
  } catch (e) {
    const msg = e instanceof Error ? e.message : String(e);
    console.error("Upload media error:", e);
    return NextResponse.json(
      { ok: false, error: `上传失败: ${msg}` },
      { status: 500 }
    );
  }
}