CardScoreDataServer/app/api/formate_xy.py

import requests
import json
import copy
from enum import Enum

from fastapi import APIRouter, Depends, HTTPException, Query, Body
from fastapi.concurrency import run_in_threadpool

from mysql.connector.pooling import PooledMySQLConnection

from app.core.config import settings
from app.core.logger import get_logger
from app.core.database_loader import get_db_connection
from app.api.users import check_card_permission, get_current_user
from app.utils.scheme import (
    CardDetailResponse, IMAGE_TYPE_TO_SCORE_TYPE, ImageType
)
from app.crud import crud_card
from app.utils.xy_process import convert_internal_to_xy_format, convert_xy_to_internal_format
import hashlib
from app.core.minio_client import minio_client
from app.utils.rating_report_utils import crop_defect_image

logger = get_logger(__name__)
router = APIRouter()
db_dependency = Depends(get_db_connection)


class QueryMode(str, Enum):
    current = "current"
    next = "next"
    prev = "prev"


def _is_center_box_shapes_empty(center_result: dict) -> bool:
    """
    判断 center_result 中 inner/outer box 的 shapes 是否都为空。
    前端某些场景会传空 shapes，直接下发给算分服务可能触发其内部越界。
    """
    if not isinstance(center_result, dict):
        return True
    box_result = center_result.get("box_result", {})
    if not isinstance(box_result, dict):
        return True

    inner_shapes = box_result.get("inner_box", {}).get("shapes", [])
    outer_shapes = box_result.get("outer_box", {}).get("shapes", [])
    return not inner_shapes and not outer_shapes


def _prepare_recalculate_payload(edited_json: dict, source_json: dict) -> dict:
    """
    以数据库里的原始 JSON 为底稿，合并前端编辑结果，得到更稳定的重算入参。
    当前仅明确覆盖 defects；center_result 只有在前端传了非空 shapes 时才覆盖。
    """
    base = copy.deepcopy(source_json) if isinstance(source_json, dict) else {}
    incoming = edited_json if isinstance(edited_json, dict) else {}

    if "id" in incoming:
        base["id"] = incoming["id"]
    if "imageWidth" in incoming:
        base["imageWidth"] = incoming["imageWidth"]
    if "imageHeight" in incoming:
        base["imageHeight"] = incoming["imageHeight"]

    base.setdefault("result", {})
    incoming_result = incoming.get("result", {})
    if not isinstance(incoming_result, dict):
        incoming_result = {}

    # defects 使用前端编辑结果覆盖
    incoming_defects = (
        incoming_result.get("defect_result", {}).get("defects", [])
        if isinstance(incoming_result.get("defect_result", {}), dict)
        else []
    )
    base["result"].setdefault("defect_result", {})
    base["result"]["defect_result"]["defects"] = incoming_defects if isinstance(incoming_defects, list) else []

    # center_result 仅在前端有有效 shapes 时覆盖；否则沿用底稿
    incoming_center = incoming_result.get("center_result")
    if isinstance(incoming_center, dict) and not _is_center_box_shapes_empty(incoming_center):
        base["result"]["center_result"] = incoming_center
    elif "center_result" not in base["result"]:
        base["result"]["center_result"] = incoming_center if isinstance(incoming_center, dict) else {}

    return base


def _sanitize_defects_for_recalculate(defects: list):
    """
    清理前端展示/编辑辅助字段，减少算分服务解析失败概率。
    """
    if not isinstance(defects, list):
        return
    for d in defects:
        if not isinstance(d, dict):
            continue
        if d.get("label") == "slight_scratch":
            d["label"] = "scratch"
        d.pop("defectImgUrl", None)
        d.pop("defectImgUrls", None)
        d.pop("gray_id", None)
        d.pop("fusion_id", None)
        d.pop("edit_type", None)
        d.pop("severity_level", None)
        d.pop("new_score", None)


def _process_defects_for_json(card_id: int, img_id: int, img_path: str, json_data: dict, side: str, all_images: list = None):
    if not json_data or "result" not in json_data:
        return
    defect_result = json_data["result"].get("defect_result", {})
    defects = defect_result.get("defects", [])
    
    is_fusion = side in ("front_fusion", "back_fusion")
    side_prefix = "front_" if side.startswith("front_") else "back_"
    
    defect_detail_list = []
    for idx, defect in enumerate(defects, start=1):
        min_rect = defect.get("min_rect")
        defect_img_url = ""
        location_str = ""
        defect_img_url_list = []
        
        if min_rect and len(min_rect) == 3:
            center_x, center_y = min_rect[0]
            location_str = f"{int(center_x)},{int(center_y)}"
            
            # 使用坐标哈希作为缓存文件名，避免重复裁剪
            rect_str = str(min_rect)
            rect_hash = hashlib.md5(rect_str.encode('utf-8')).hexdigest()[:8]
            filename = f"xy_{card_id}_{img_id}_{idx}_{rect_hash}.jpg"
            
            out_rel_path = f"/DefectImage/{filename}"
            out_object_name = f"{settings.MINIO_BASE_PREFIX}{out_rel_path}"
            try:
                # 检查 MinIO 中是否已有该截图，有则直接使用
                minio_client.stat_object(settings.MINIO_BUCKET, out_object_name)
                defect_img_url = settings.get_full_url(out_rel_path)
            except Exception:
                # 不存在或异常，则执行裁剪并上传
                defect_img_url = crop_defect_image(img_path, min_rect, filename)
            
            # 把同面的其他类型图在同样位置截图（不论是不是融合图都截）
            if all_images:
                same_side_images = [img for img in all_images if getattr(img, 'image_type', '').startswith(side_prefix)]
                for s_img in same_side_images:
                    s_img_type = getattr(s_img, 'image_type', '')
                    s_img_path = getattr(s_img, 'image_path', '')
                    s_img_id = getattr(s_img, 'id', 0)
                    
                    s_filename = f"xy_{card_id}_{s_img_id}_{idx}_{rect_hash}.jpg"
                    s_out_rel_path = f"/DefectImage/{s_filename}"
                    s_out_object_name = f"{settings.MINIO_BASE_PREFIX}{s_out_rel_path}"
                    
                    s_url = ""
                    try:
                        minio_client.stat_object(settings.MINIO_BUCKET, s_out_object_name)
                        s_url = settings.get_full_url(s_out_rel_path)
                    except Exception:
                        if s_img_path:
                            s_url = crop_defect_image(s_img_path, min_rect, s_filename)
                        
                    if s_url:
                        defect_img_url_list.append({
                            "image_type": s_img_type,
                            "url": s_url
                        })
        
        # 1. 给每条缺陷带上 defectImgUrl
        defect["defectImgUrl"] = defect_img_url
        defect["defectImgUrls"] = defect_img_url_list
        
        # 2. 组装 defectDetailList 元素
        raw_type = f"{defect.get('defect_type', '')}".upper().strip()
        type_str_map = {
            "CORNER": "CORNER",
            "EDGE": "SIDE",
            "FACE": "SURFACE"
        }
        type_str = type_str_map.get(raw_type, raw_type)
        
        detail_item = {
            "id": defect.get("id", idx),
            "side": side,
            "location": location_str,
            "type": type_str,
            "defectImgUrl": defect_img_url,
            "label": defect.get("label", ""),
            "actual_area": defect.get("actual_area", 0),
            "defectImgUrls": defect_img_url_list
        }
            
        defect_detail_list.append(detail_item)
        
    defect_result["defectDetailList"] = defect_detail_list


def _process_images_to_xy_format(card_data: dict):
    """
    内部辅助函数：遍历卡牌数据中的图片，将 JSON 格式转换为前端需要的 XY 格式。
    直接修改传入的 card_data 字典。
    """
    card_id = card_data.get("id")
    all_images = card_data.get("images", [])
    if all_images:
        for img in all_images:
            d_internal = img.detection_json
            if isinstance(d_internal, str):
                d_internal = json.loads(d_internal)

            if d_internal:
                _process_defects_for_json(card_id, img.id, img.image_path, d_internal, img.image_type, all_images)
                img.detection_json = convert_internal_to_xy_format(d_internal)
            else:
                img.detection_json = convert_internal_to_xy_format({})

            m_internal = img.modified_json
            if isinstance(m_internal, str):
                m_internal = json.loads(m_internal)

            if m_internal:
                _process_defects_for_json(card_id, img.id, img.image_path, m_internal, img.image_type, all_images)
                img.modified_json = convert_internal_to_xy_format(m_internal)
            else:
                m_fallback = copy.deepcopy(d_internal) if d_internal else {}
                img.modified_json = convert_internal_to_xy_format(m_fallback)
    return card_data


@router.get("/query", response_model=CardDetailResponse, summary="获取卡牌详细信息(格式化xy), 支持前后翻页 [用户调用]")
def get_card_details(
        card_id: int = Query(..., description="基准卡牌ID"),
        mode: QueryMode = Query(QueryMode.current, description="查询模式: current(当前), next(下一个), prev(上一个)"),
        db_conn: PooledMySQLConnection = db_dependency
):
    """
    获取卡牌元数据以及所有与之关联的图片信息，并将坐标转换为 xy 格式。
    同时返回上一张和下一张卡牌的ID。

    - **current**: 查询 card_id 对应的卡牌。
    - **next**: 查询 ID 比 card_id 大的第一张卡牌。
    - **prev**: 查询 ID 比 card_id 小的第一张卡牌。
    """
    target_id = card_id
    cursor = None

    try:
        cursor = db_conn.cursor(dictionary=True)

        # 1. 如果是查询上一个或下一个，先计算目标ID
        if mode != QueryMode.current:
            if mode == QueryMode.next:
                query_target = (f"SELECT id FROM {settings.DB_CARD_TABLE_NAME} "
                                f"WHERE id > %s ORDER BY id ASC LIMIT 1")
            else:  # mode == QueryMode.prev
                query_target = (f"SELECT id FROM {settings.DB_CARD_TABLE_NAME} "
                                f"WHERE id < %s ORDER BY id DESC LIMIT 1")

            cursor.execute(query_target, (card_id,))
            row = cursor.fetchone()

            if not row:
                msg = "没有下一张" if mode == QueryMode.next else "没有上一张"
                raise HTTPException(status_code=200, detail=msg)

            target_id = row['id']

        # 2. 获取目标卡牌的详细数据 (Dict 格式)
        card_data = crud_card.get_card_with_details(db_conn, target_id)

        if not card_data:
            raise HTTPException(status_code=404, detail=f"ID为 {target_id} 的卡牌未找到。")

        # 3. 补充当前目标卡牌的 id_prev 和 id_next
        # 注意：这里需要重新获取 cursor，或者使用 cursor (非 dict 模式可能更方便取值，但 dict 模式也行)
        # 这里为了简单直接用 raw SQL

        # 查询上一个ID
        sql_prev = f"SELECT id FROM {settings.DB_CARD_TABLE_NAME} WHERE id < %s ORDER BY id DESC LIMIT 1"
        cursor.execute(sql_prev, (target_id,))
        row_prev = cursor.fetchone()
        card_data['id_prev'] = row_prev['id'] if row_prev else None

        # 查询下一个ID
        sql_next = f"SELECT id FROM {settings.DB_CARD_TABLE_NAME} WHERE id > %s ORDER BY id ASC LIMIT 1"
        cursor.execute(sql_next, (target_id,))
        row_next = cursor.fetchone()
        card_data['id_next'] = row_next['id'] if row_next else None

        # 4. 遍历图片，转换格式 (使用抽取出的辅助函数)
        _process_images_to_xy_format(card_data)

        # 5. 将 images 从 Pydantic 对象转为 dict，避免 model_validate 重复验证导致类型异常
        if "images" in card_data:
            card_data["images"] = [
                img.model_dump() if hasattr(img, 'model_dump') else img
                for img in card_data["images"]
            ]

        # 6. 验证并返回
        return CardDetailResponse.model_validate(card_data)

    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"查询卡牌详情失败 (Mode: {mode}, BaseID: {card_id}): {e}")
        raise HTTPException(status_code=500, detail="数据库查询失败")
    finally:
        if cursor:
            cursor.close()


@router.put("/update/json/{id}", status_code=200, summary="接收xy格式, 还原后重计算分数并保存 [用户调用]")
async def update_image_modified_json(
        id: int,
        new_json_data: dict = Body(..., description="前端传来的包含xy对象格式的JSON"),
        current_user: dict = Depends(get_current_user),
        db_conn: PooledMySQLConnection = db_dependency
):
    """
    接收前端传来的特殊格式 JSON (points 为对象列表)。
    1. 将格式还原为后端标准格式 (points 为 [[x,y]])。
    2. 根据 id 获取 image_type。
    3. 调用外部接口重新计算分数。
    4. 更新 modified_json。
    """
    card_id_to_update = None
    cursor = None

    # *** 1. 格式还原 ***
    # 将前端的 xy dict 格式转回 [[x,y]]
    internal_json_payload = convert_xy_to_internal_format(new_json_data)

    try:
        cursor = db_conn.cursor(dictionary=True)

        # 2. 获取图片信息
        cursor.execute(
            f"SELECT image_type, card_id, detection_json, modified_json "
            f"FROM {settings.DB_IMAGE_TABLE_NAME} WHERE id = %s",
            (id,)
        )
        row = cursor.fetchone()
        if not row:
            raise HTTPException(status_code=404, detail=f"ID为 {id} 的图片未找到。")

        card_id_to_update = row["card_id"]
        check_card_permission(db_conn, current_user, card_id_to_update)
        image_type = row["image_type"]
        
        # 针对融合图，在调用外部服务算分时直接把它当成对应的 ring 图
        # 否则它在映射表里是 None，会导致报错
        target_score_type = image_type
        if image_type == ImageType.front_fusion.value:
            target_score_type = ImageType.front_ring.value
        elif image_type == ImageType.back_fusion.value:
            target_score_type = ImageType.back_ring.value
            
        score_type = IMAGE_TYPE_TO_SCORE_TYPE.get(target_score_type)
        if not score_type:
            raise HTTPException(status_code=400, detail=f"未知的 image_type: {image_type}")

        # 3. 准备重算 payload：以库内原始 JSON 为底稿，仅覆盖编辑后的 defects
        source_json_str = row["modified_json"] if row["modified_json"] else row["detection_json"]
        if isinstance(source_json_str, str):
            source_json_data = json.loads(source_json_str)
        else:
            source_json_data = source_json_str if isinstance(source_json_str, dict) else {}

        payload_for_recalculate = _prepare_recalculate_payload(internal_json_payload, source_json_data)
        _defects = payload_for_recalculate.get("result", {}).get("defect_result", {}).get("defects", [])
        _sanitize_defects_for_recalculate(_defects)

        logger.info(f"开始计算分数 (ID: {id}, Type: {score_type})")

        # 4. 调用远程计算接口
        try:
            response = await run_in_threadpool(
                lambda: requests.post(
                    settings.SCORE_RECALCULATE_ENDPOINT,
                    params={"score_type": score_type},
                    json=payload_for_recalculate,
                    timeout=20
                )
            )
        except Exception as e:
            raise HTTPException(status_code=500, detail=f"调用分数计算服务失败: {e}")

        if response.status_code != 200:
            logger.error(f"分数计算接口返回错误: {response.status_code}, {response.text}")
            raise HTTPException(status_code=response.status_code,
                                detail=f"分数计算接口返回错误: {response.text}")
        logger.info("分数计算完成")

        # 获取计算服务返回的结果（这个结果通常已经是标准的 internal 格式，带有分数和面积）
        final_json_data = response.json()

        # 5. 保存结果到数据库
        recalculated_json_str = json.dumps(final_json_data, ensure_ascii=False)
        update_query = (f"UPDATE {settings.DB_IMAGE_TABLE_NAME} "
                        f"SET modified_json = %s, is_edited = TRUE "
                        f"WHERE id = %s")

        cursor.execute(update_query, (recalculated_json_str, id))

        db_conn.commit()
        logger.info(f"图片ID {id} 的 modified_json 已更新并重新计算。")

        # 更新对应的 cards 的分数状态
        try:
            crud_card.update_card_scores_and_status(db_conn, card_id_to_update)
            logger.info(f"卡牌 {card_id_to_update} 的分数和状态已更新。")
        except Exception as score_update_e:
            logger.error(f"更新卡牌 {card_id_to_update} 分数失败: {score_update_e}")

        # 更新卡牌审核状态
        try:
            with db_conn.cursor() as cursor:
                review_state = 2
                # 更新指定 card_id 的 review_state 字段
                query_update = f"UPDATE {settings.DB_CARD_TABLE_NAME} SET review_state = %s WHERE id = %s"
                cursor.execute(query_update, (review_state, card_id_to_update))

                if cursor.rowcount == 0:
                    raise HTTPException(status_code=404, detail=f"ID为 {card_id_to_update} 的卡牌未找到。")

                db_conn.commit()
                logger.info(f"卡牌 ID {card_id_to_update} 的审核状态已成功修改为 {review_state}。")

        except Exception as e:
            db_conn.rollback()
            logger.error(f"修改卡牌 {id} 审核状态失败: {e}")
            if isinstance(e, HTTPException):
                raise e
            raise HTTPException(status_code=500, detail="修改审核状态失败，数据库操作错误。")

        return {
            "detail": f"成功更新图片ID {id} 的JSON数据",
            "image_type": image_type,
            "score_type": score_type
        }

    except HTTPException:
        db_conn.rollback()
        raise
    except Exception as e:
        db_conn.rollback()
        logger.error(f"更新JSON失败 ({id}): {e}")
        raise HTTPException(status_code=500, detail=f"更新JSON数据失败: {e}")
    finally:
        if cursor:
            cursor.close()


# 处理灰度如
@router.put("/update/json_gray/{id}", status_code=200, summary="[灰度] 接收xy格式, 合并至Ring图重计算并保存 [用户调用]")
async def update_gray_image_json(
        id: int,
        new_json_data: dict = Body(..., description="前端传来的灰度图编辑后的JSON(xy格式)"),
        current_user: dict = Depends(get_current_user),
        db_conn: PooledMySQLConnection = db_dependency
):
    """
    针对灰度图 (front_gray/back_gray) 的保存逻辑。
    """
    cursor = None

    # 1. 格式还原
    internal_gray_json = convert_xy_to_internal_format(new_json_data)
    gray_defects = internal_gray_json.get("result", {}).get("defect_result", {}).get("defects", [])
    
    # 丢弃前端展示用的辅助字段，防止传给算分服务导致报错
    for d in gray_defects:
        if d.get("label") == "slight_scratch":
            d["label"] = "scratch"
        d.pop("defectImgUrl", None)
        d.pop("defectImgUrls", None)

    try:
        cursor = db_conn.cursor(dictionary=True)

        # 2. 获取辅助图（灰度图/融合图）信息
        # 以前只查 card_gray_images，现在融合图是在 card_images 表里
        # 先查 card_gray_images
        cursor.execute(f"SELECT card_id, image_type FROM {settings.DB_GRAY_IMAGE_TABLE_NAME} WHERE id = %s", (id,))
        gray_row = cursor.fetchone()
        
        if not gray_row:
            # 如果灰度表没找到，去主表找找看是不是融合图
            cursor.execute(f"SELECT card_id, image_type FROM {settings.DB_IMAGE_TABLE_NAME} WHERE id = %s AND image_type IN ('front_fusion', 'back_fusion')", (id,))
            gray_row = cursor.fetchone()
            if not gray_row:
                raise HTTPException(status_code=404, detail=f"ID为 {id} 的辅助图未找到。")

        card_id = gray_row['card_id']
        check_card_permission(db_conn, current_user, card_id)
        gray_image_type = gray_row['image_type']

        # 3. 确定目标 Ring 图类型
        target_ring_type = None
        if gray_image_type in (ImageType.front_gray.value, ImageType.front_fusion.value):
            target_ring_type = ImageType.front_ring.value
        elif gray_image_type in (ImageType.back_gray.value, ImageType.back_fusion.value):
            target_ring_type = ImageType.back_ring.value
        else:
            raise HTTPException(status_code=400, detail=f"不支持的辅助图类型: {gray_image_type}")

        # 4. 获取目标 Ring 图数据 (Card Images 表)
        cursor.execute(
            f"SELECT id, detection_json, modified_json FROM {settings.DB_IMAGE_TABLE_NAME} "
            f"WHERE card_id = %s AND image_type = %s",
            (card_id, target_ring_type)
        )
        ring_row = cursor.fetchone()

        if not ring_row:
            raise HTTPException(status_code=404, detail=f"未找到对应的 Ring 图 ({target_ring_type})，无法应用修改。")

        ring_image_id = ring_row['id']
        # 优先使用 modified_json，如果没有则使用 detection_json
        source_json_str = ring_row['modified_json'] if ring_row['modified_json'] else ring_row['detection_json']

        if isinstance(source_json_str, str):
            ring_json_data = json.loads(source_json_str)
        else:
            ring_json_data = source_json_str

        # 5. 合并逻辑 (Merge Logic)
        # 确保路径存在
        if "result" not in ring_json_data: ring_json_data["result"] = {}
        if "defect_result" not in ring_json_data["result"]: ring_json_data["result"]["defect_result"] = {}
        if "defects" not in ring_json_data["result"]["defect_result"]: ring_json_data["result"]["defect_result"][
            "defects"] = []

        ring_defects = ring_json_data["result"]["defect_result"]["defects"]

        # 遍历灰度图传来的新缺陷列表
        for new_defect in gray_defects:
            is_fusion = gray_image_type in (ImageType.front_fusion.value, ImageType.back_fusion.value)
            key_to_check = "fusion_id" if is_fusion else "gray_id"
            
            identifier = new_defect.get(key_to_check)

            # 只有带有对应标识的才进行特殊合并处理
            # 如果没有，视作普通新缺陷直接添加
            if not identifier:
                ring_defects.append(new_defect)
                continue

            # 在 Ring 图现有的缺陷中寻找匹配的标识
            match_index = -1
            for i, old_defect in enumerate(ring_defects):
                if old_defect.get(key_to_check) == identifier:
                    match_index = i
                    break

            if match_index != -1:
                # 存在：替换 (Replace)
                ring_defects[match_index] = new_defect
            else:
                # 不存在：添加 (Append)
                ring_defects.append(new_defect)

        # 6. 调用计算服务 (对 Ring 图数据进行重算)
        score_type = IMAGE_TYPE_TO_SCORE_TYPE.get(target_ring_type)  # e.g., 'front_ring'

        logger.info(f"开始重计算 Ring 图分数 (GrayID: {id} -> RingID: {ring_image_id}, Type: {score_type})")

        try:
            response = await run_in_threadpool(
                lambda: requests.post(
                    settings.SCORE_RECALCULATE_ENDPOINT,
                    params={"score_type": score_type},
                    json=ring_json_data,  # 发送合并后的 Ring 数据
                    timeout=20
                )
            )
        except Exception as e:
            raise HTTPException(status_code=500, detail=f"调用分数计算服务失败: {e}")

        if response.status_code != 200:
            logger.error(f"分数计算接口返回错误: {response.text}")
            raise HTTPException(status_code=response.status_code,
                                detail=f"分数计算接口返回错误: {response.text}")

        final_ring_json = response.json()

        # 7. 保存结果到数据库 (保存到 Ring 图记录)
        final_json_str = json.dumps(final_ring_json, ensure_ascii=False)

        update_query = (
            f"UPDATE {settings.DB_IMAGE_TABLE_NAME} "
            f"SET modified_json = %s, is_edited = TRUE "
            f"WHERE id = %s"
        )
        cursor.execute(update_query, (final_json_str, ring_image_id))
        db_conn.commit()

        logger.info(f"Ring 图 {ring_image_id} 已根据灰度图 {id} 的修改进行了更新。")

        # 8. 更新卡牌总分状态
        try:
            crud_card.update_card_scores_and_status(db_conn, card_id)
        except Exception as e:
            logger.error(f"更新卡牌 {card_id} 分数状态失败: {e}")

        # 更新卡牌审核状态
        try:
            with db_conn.cursor() as cursor:
                review_state = 2
                # 更新指定 card_id 的 review_state 字段
                # 注意：MySQL 在 “值未变化” 的情况下 rowcount 可能为 0，但这不代表记录不存在。
                query_update = f"UPDATE {settings.DB_CARD_TABLE_NAME} SET review_state = %s WHERE id = %s"
                cursor.execute(query_update, (review_state, card_id))

                if cursor.rowcount == 0:
                    cursor.execute(f"SELECT 1 FROM {settings.DB_CARD_TABLE_NAME} WHERE id = %s LIMIT 1", (card_id,))
                    if not cursor.fetchone():
                        raise HTTPException(status_code=404, detail=f"ID为 {card_id} 的卡牌未找到。")

                db_conn.commit()
                logger.info(f"卡牌 ID {card_id} 的审核状态已成功修改为 {review_state}。")

        except Exception as e:
            db_conn.rollback()
            logger.error(f"修改卡牌 {id} 审核状态失败: {e}")
            if isinstance(e, HTTPException):
                raise e
            raise HTTPException(status_code=500, detail="修改审核状态失败，数据库操作错误。")

        return {
            "detail": f"成功应用灰度图修改到 {target_ring_type}",
            "target_ring_id": ring_image_id,
            "gray_id": id
        }

    except HTTPException:
        db_conn.rollback()
        raise
    except Exception as e:
        db_conn.rollback()
        logger.error(f"灰度图更新失败 ({id}): {e}")
        raise HTTPException(status_code=500, detail=f"系统内部错误: {e}")
    finally:
        if cursor:
            cursor.close()