From d5f5c956f7bde33b269fe22b67d4473c0b2b559d Mon Sep 17 00:00:00 2001
From: RachelOS <1327444968@qq.com>
Date: Mon, 30 Mar 2026 17:30:50 +0800
Subject: [PATCH] 1.4.9-Fix

---
 apis/tools.py | 336 +++++++++++++++++++++++++++++++++++++++++++++++++-
 driver/wx.py  |   6 +-
 2 files changed, 336 insertions(+), 6 deletions(-)

diff --git a/apis/tools.py b/apis/tools.py
index 60f88e0d..dfa3afad 100644
--- a/apis/tools.py
+++ b/apis/tools.py
@@ -1,20 +1,26 @@
-from fastapi import APIRouter, Depends, HTTPException, status, Query, Body
-from fastapi.responses import FileResponse
+from fastapi import APIRouter, Depends, HTTPException, status, Query, Body, File, UploadFile, Form
+from fastapi.responses import FileResponse, Response
 from starlette.background import BackgroundTask
 from pydantic import BaseModel, Field
 from core.auth import get_current_user_or_ak
 from core.db import DB
 from .base import success_response, error_response,BaseResponse
 from datetime import datetime
-from typing import Optional, List
+from typing import Optional, List, Literal
 import os
 import threading
 import asyncio
 from concurrent.futures import ThreadPoolExecutor
+import io
+import uuid
+import base64
 
 # 导入导出工具
 from tools.mdtools.export import export_md_to_doc, process_articles
 
+# 图片处理
+from PIL import Image
+
 router = APIRouter(prefix="/tools", tags=["工具"])
 
 # Schema 模型定义
@@ -307,4 +313,326 @@ async def delete_export_file_by_query(
     """
     # 创建请求对象并调用主删除函数
     request = DeleteFileRequest(filename=filename, mp_id=mp_id)
-    return await delete_export_file(request, current_user)
\ No newline at end of file
+    return await delete_export_file(request, current_user)
+
+
+# ==================== 图片裁剪功能 ====================
+
+# 裁剪方式枚举
+CropMode = Literal[
+    "center", "top", "bottom", "left", "right",
+    "top-left", "top-right", "bottom-left", "bottom-right"
+]
+
+class ImageCropRequest(BaseModel):
+    """图片裁剪请求模型（用于URL或base64输入）"""
+    image_url: Optional[str] = Field(None, description="图片URL地址")
+    image_base64: Optional[str] = Field(None, description="Base64编码的图片数据")
+    aspect_ratio: Optional[str] = Field(None, description="目标比例，如 '16:9', '4:3', '1:1' 或自定义 '800:600'")
+    width: Optional[int] = Field(None, description="目标宽度（像素），与aspect_ratio二选一")
+    height: Optional[int] = Field(None, description="目标高度（像素），与aspect_ratio二选一")
+    mode: CropMode = Field("center", description="裁剪方式：center(居中), top(顶部), bottom(底部), left(左侧), right(右侧), top-left, top-right, bottom-left, bottom-right")
+    output_format: str = Field("png", description="输出格式：png, jpeg, webp")
+    return_base64: bool = Field(False, description="是否返回base64编码，默认返回文件下载")
+
+class ImageCropResponse(BaseModel):
+    """图片裁剪响应模型"""
+    width: int = Field(..., description="裁剪后宽度")
+    height: int = Field(..., description="裁剪后高度")
+    original_width: int = Field(..., description="原始宽度")
+    original_height: int = Field(..., description="原始高度")
+    format: str = Field(..., description="输出格式")
+    file_url: Optional[str] = Field(None, description="文件下载地址")
+    base64: Optional[str] = Field(None, description="Base64编码的图片数据")
+
+
+def calculate_crop_box(
+    original_width: int,
+    original_height: int,
+    target_ratio: float,
+    mode: str
+) -> tuple:
+    """
+    计算裁剪区域
+    
+    Args:
+        original_width: 原图宽度
+        original_height: 原图高度
+        target_ratio: 目标宽高比 (width/height)
+        mode: 裁剪方式
+        
+    Returns:
+        (left, top, right, bottom) 裁剪区域
+    """
+    original_ratio = original_width / original_height
+    
+    if original_ratio > target_ratio:
+        # 原图更宽，需要裁剪宽度
+        new_width = int(original_height * target_ratio)
+        new_height = original_height
+        
+        # 根据模式确定水平位置
+        if mode in ["left", "top-left", "bottom-left"]:
+            left = 0
+        elif mode in ["right", "top-right", "bottom-right"]:
+            left = original_width - new_width
+        else:  # center, top, bottom
+            left = (original_width - new_width) // 2
+        
+        right = left + new_width
+        top = 0
+        bottom = original_height
+        
+    else:
+        # 原图更高，需要裁剪高度
+        new_width = original_width
+        new_height = int(original_width / target_ratio)
+        
+        # 根据模式确定垂直位置
+        if mode in ["top", "top-left", "top-right"]:
+            top = 0
+        elif mode in ["bottom", "bottom-left", "bottom-right"]:
+            top = original_height - new_height
+        else:  # center, left, right
+            top = (original_height - new_height) // 2
+        
+        bottom = top + new_height
+        left = 0
+        right = original_width
+    
+    return (left, top, right, bottom)
+
+
+def process_image_crop(
+    image_data: bytes,
+    aspect_ratio: Optional[str],
+    target_width: Optional[int],
+    target_height: Optional[int],
+    mode: str,
+    output_format: str
+) -> tuple:
+    """
+    处理图片裁剪
+    
+    Returns:
+        (cropped_image_bytes, original_size, new_size)
+    """
+    # 打开图片
+    img = Image.open(io.BytesIO(image_data))
+    original_width, original_height = img.size
+    
+    # 如果是RGBA模式且输出格式不支持透明，转换为RGB
+    if img.mode == "RGBA" and output_format.lower() in ["jpeg", "jpg"]:
+        # 创建白色背景
+        background = Image.new("RGB", img.size, (255, 255, 255))
+        background.paste(img, mask=img.split()[3] if len(img.split()) == 4 else None)
+        img = background
+    elif img.mode != "RGB" and img.mode != "RGBA":
+        img = img.convert("RGB")
+    
+    # 计算目标比例
+    if aspect_ratio:
+        # 解析比例字符串
+        parts = aspect_ratio.split(":")
+        if len(parts) != 2:
+            raise ValueError(f"无效的比例格式: {aspect_ratio}，正确格式如 '16:9'")
+        ratio_width, ratio_height = float(parts[0]), float(parts[1])
+        target_ratio = ratio_width / ratio_height
+    elif target_width and target_height:
+        target_ratio = target_width / target_height
+    elif target_width:
+        # 只指定宽度，按原图比例
+        target_ratio = target_width / (target_width * original_height / original_width)
+    elif target_height:
+        # 只指定高度，按原图比例
+        target_ratio = (target_height * original_width / original_height) / target_height
+    else:
+        # 不裁剪，直接返回原图
+        output_buffer = io.BytesIO()
+        save_format = "JPEG" if output_format.lower() in ["jpeg", "jpg"] else output_format.upper()
+        img.save(output_buffer, format=save_format)
+        return output_buffer.getvalue(), (original_width, original_height), (original_width, original_height)
+    
+    # 计算裁剪区域
+    crop_box = calculate_crop_box(original_width, original_height, target_ratio, mode)
+    
+    # 执行裁剪
+    cropped_img = img.crop(crop_box)
+    new_width, new_height = cropped_img.size
+    
+    # 如果指定了精确尺寸，进行缩放
+    if target_width and target_height:
+        cropped_img = cropped_img.resize((target_width, target_height), Image.Resampling.LANCZOS)
+        new_width, new_height = target_width, target_height
+    
+    # 输出到字节流
+    output_buffer = io.BytesIO()
+    save_format = "JPEG" if output_format.lower() in ["jpeg", "jpg"] else output_format.upper()
+    
+    if save_format == "JPEG":
+        cropped_img.save(output_buffer, format=save_format, quality=95)
+    else:
+        cropped_img.save(output_buffer, format=save_format)
+    
+    return output_buffer.getvalue(), (original_width, original_height), (new_width, new_height)
+
+
+@router.post("/image/crop", summary="图片裁剪")
+async def crop_image(
+    file: Optional[UploadFile] = File(None),
+    image_url: Optional[str] = Form(None),
+    image_base64: Optional[str] = Form(None),
+    aspect_ratio: Optional[str] = Form(None),
+    width: Optional[int] = Form(None),
+    height: Optional[int] = Form(None),
+    mode: CropMode = Form("center"),
+    output_format: str = Form("png"),
+    return_base64: bool = Form(False),
+    current_user: dict = Depends(get_current_user_or_ak)
+):
+    """
+    图片裁剪接口
+    
+    支持三种图片输入方式（优先级从高到低）：
+    1. file: 上传文件
+    2. image_url: 图片URL地址
+    3. image_base64: Base64编码的图片
+    
+    裁剪参数：
+    - aspect_ratio: 目标比例，如 '16:9', '4:3', '1:1' 或自定义 '800:600'
+    - width/height: 目标尺寸（可选，同时指定会缩放到精确尺寸）
+    - mode: 裁剪方式
+      - center: 居中裁剪
+      - top: 顶部裁剪
+      - bottom: 底部裁剪
+      - left: 左侧裁剪
+      - right: 右侧裁剪
+      - top-left: 左上角裁剪
+      - top-right: 右上角裁剪
+      - bottom-left: 左下角裁剪
+      - bottom-right: 右下角裁剪
+    - output_format: 输出格式 (png/jpeg/webp)
+    - return_base64: 是否返回base64，默认返回文件下载
+    """
+    try:
+        import httpx
+        
+        # 获取图片数据
+        image_data = None
+        
+        if file:
+            # 从上传文件获取
+            image_data = await file.read()
+        elif image_url:
+            # 从URL下载
+            async with httpx.AsyncClient(timeout=30) as client:
+                response = await client.get(image_url)
+                if response.status_code != 200:
+                    return error_response(400, f"下载图片失败: HTTP {response.status_code}")
+                image_data = response.content
+        elif image_base64:
+            # 从base64解码
+            # 移除可能的data:image/xxx;base64,前缀
+            if "," in image_base64:
+                image_base64 = image_base64.split(",")[1]
+            image_data = base64.b64decode(image_base64)
+        else:
+            return error_response(400, "请提供图片：上传文件(file)、图片URL(image_url)或Base64数据(image_base64)")
+        
+        # 执行裁剪
+        cropped_data, original_size, new_size = process_image_crop(
+            image_data=image_data,
+            aspect_ratio=aspect_ratio,
+            target_width=width,
+            target_height=height,
+            mode=mode,
+            output_format=output_format
+        )
+        
+        # 返回结果
+        if return_base64:
+            # 返回base64
+            base64_data = base64.b64encode(cropped_data).decode("utf-8")
+            mime_type = f"image/{output_format.lower()}"
+            return success_response({
+                "width": new_size[0],
+                "height": new_size[1],
+                "original_width": original_size[0],
+                "original_height": original_size[1],
+                "format": output_format,
+                "base64": f"data:{mime_type};base64,{base64_data}"
+            })
+        else:
+            # 保存到临时文件并返回下载链接
+            temp_dir = "./data/temp/cropped"
+            os.makedirs(temp_dir, exist_ok=True)
+            
+            filename = f"cropped_{uuid.uuid4().hex[:8]}_{datetime.now().strftime('%Y%m%d%H%M%S')}.{output_format}"
+            file_path = os.path.join(temp_dir, filename)
+            
+            with open(file_path, "wb") as f:
+                f.write(cropped_data)
+            
+            return success_response({
+                "width": new_size[0],
+                "height": new_size[1],
+                "original_width": original_size[0],
+                "original_height": original_size[1],
+                "format": output_format,
+                "file_url": f"/api/v1/tools/image/download/{filename}",
+                "filename": filename
+            })
+            
+    except ValueError as e:
+        return error_response(400, str(e))
+    except Exception as e:
+        return error_response(500, f"图片裁剪失败: {str(e)}")
+
+
+@router.get("/image/download/{filename}", summary="下载裁剪后的图片")
+async def download_cropped_image(
+    filename: str,
+    delete_after_download: bool = Query(True, description="下载后删除临时文件")
+):
+    """
+    下载裁剪后的图片
+    """
+    try:
+        temp_dir = os.path.abspath("./data/temp/cropped")
+        safe_path = os.path.abspath(os.path.join(temp_dir, filename))
+        
+        # 安全检查
+        if not safe_path.startswith(temp_dir):
+            return error_response(403, "非法的文件路径请求")
+        
+        if not os.path.exists(safe_path):
+            raise HTTPException(status_code=404, detail="文件不存在或已过期")
+        
+        def cleanup_file():
+            try:
+                if os.path.exists(safe_path) and delete_after_download:
+                    os.remove(safe_path)
+            except Exception:
+                pass
+        
+        # 确定MIME类型
+        ext = filename.rsplit(".", 1)[-1].lower()
+        mime_map = {
+            "png": "image/png",
+            "jpg": "image/jpeg",
+            "jpeg": "image/jpeg",
+            "webp": "image/webp"
+        }
+        media_type = mime_map.get(ext, "application/octet-stream")
+        
+        return FileResponse(
+            path=safe_path,
+            filename=filename,
+            media_type=media_type,
+            background=BackgroundTask(cleanup_file)
+        )
+        
+    except HTTPException:
+        raise
+    except Exception as e:
+        return error_response(500, f"下载失败: {str(e)}")
\ No newline at end of file
diff --git a/driver/wx.py b/driver/wx.py
index db173a3a..3a3b28a2 100644
--- a/driver/wx.py
+++ b/driver/wx.py
@@ -325,8 +325,10 @@ class Wx:
                 
             self.set_lock()
             
-            with self._login_lock:
-                self._haslogin = False
+            # 使用更短的锁持有时间，只保护变量修改
+            self._login_lock.acquire()
+            self._haslogin = False
+            self._login_lock.release()
                 
             # 清理现有资源
             self.cleanup_resources()