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

import { auth } from "@/app/(auth)/auth";
import {
  BoxCutoutServiceError,
  executeBoxCutoutJob,
} from "@/lib/ai/box-cutout/service";
import { RmbgServiceError } from "@/lib/ai/rmbg/service";

export const runtime = "nodejs";
export const maxDuration = 60;

type BoxCutoutRequest = {
  imageUrl?: string;
  cropRect?: {
    x?: number;
    y?: number;
    width?: number;
    height?: number;
  };
  paddingRatio?: number;
  prompt?: string;
  chatId?: string | null;
  messageId?: string | null;
  skipGallerySave?: boolean;
  sourceNodeId?: string;
};

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

    const body = (await request.json()) as BoxCutoutRequest;
    const rawImageUrl = String(body.imageUrl || "").trim();
    if (!rawImageUrl) {
      return NextResponse.json({ success: false, error: "缺少 imageUrl 参数" }, { status: 400 });
    }

    const resolvedImageUrl = new URL(rawImageUrl, request.url).toString();
    const result = await executeBoxCutoutJob({
      userId: session.user.id,
      imageUrl: resolvedImageUrl,
      cropRect: body.cropRect || {},
      paddingRatio: body.paddingRatio,
      prompt: body.prompt || "框选抠图",
      chatId: body.chatId || null,
      messageId: body.messageId || null,
      skipGallerySave: body.skipGallerySave === true,
      sourceNodeId: body.sourceNodeId,
    });

    return NextResponse.json(result);
  } catch (error) {
    if (error instanceof BoxCutoutServiceError || error instanceof RmbgServiceError) {
      return NextResponse.json(
        {
          success: false,
          error: error.detail || error.message,
        },
        { status: error.status },
      );
    }

    console.error("[BoxCutout] 处理失败:", error);
    return NextResponse.json(
      {
        success: false,
        error: error instanceof Error ? error.message : "框选抠图失败",
      },
      { status: 500 },
    );
  }
}