完成获取视频url接口

api/routes/video_urls.py

@@ -5,6 +5,19 @@
 from typing import List
 from fastapi import APIRouter, HTTPException, status
 from pydantic import BaseModel
+import requests
+import urllib3
+from hikvision_openapi_signer import HikvisionOpenAPISigner
+
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+# 初始化签名器
+signer = HikvisionOpenAPISigner(
+    "https://29.2.19.19:443",
+    "28031410",
+    "Y79rv6LqBahxoEH6adLv",
+    headers={'tagId': '0'}  # 根据平台要求设置
+)
 
 # 创建路由器
 router = APIRouter(
@@ -28,6 +41,40 @@ class VideoUrlResponse(BaseModel):
     videoUrl: List[str]
 
 
+def get_video_preview_url(video_id: str):
+    """
+    获取单个视频的预览地址
+    
+    参数:
+        video_id: 视频ID
+    
+    返回:
+        视频预览地址字符串
+    """
+    try:
+        # 签名一个请求
+        request = signer.sign(
+            'POST',
+            '/api/video/v1/cameras/previewURLs',
+            jsons={'cameraIndexCode': video_id, 'protocol': 'hls', 'expand': 'transcode=1'},
+            accept='application/json'
+        )
+        method, url, headers, body = request
+        
+        # 发送请求
+        response = requests.request(method, url, headers=headers, data=body, verify=False)
+        result = response.json()
+        
+        # 提取url
+        if 'data' in result and 'url' in result['data']:
+            return result['data']['url']
+        else:
+            raise ValueError(f"未找到视频地址: {result}")
+            
+    except Exception as e:
+        raise ValueError(f"获取视频地址失败: {str(e)}")
+
+
 @router.post(
     "/",
     response_model=VideoUrlResponse,
@@ -45,18 +92,21 @@ async def get_video_urls(request: VideoUrlRequest):
     - **videoUrl**: 视频地址数组 (字符串数组)
     """
     try:
-        # TODO: 后续实现根据videoId查询视频地址的逻辑
-        # 目前先返回模拟数据
         video_urls = []
+        
+        # 批量获取视频地址
         for video_id in request.videoId:
-            # 模拟根据videoId生成视频地址
-            video_url = f"http://example.com/videos/{video_id}.mp4"
-            video_urls.append(video_url)
+            try:
+                video_url = get_video_preview_url(video_id)
+                video_urls.append(video_url)
+            except Exception as e:
+                # 单个视频获取失败时记录错误，但继续处理其他视频
+                video_urls.append(f"net_error_url")
         
         return VideoUrlResponse(videoUrl=video_urls)
     
     except Exception as e:
         raise HTTPException(
             status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-            detail=f"获取视频地址失败: {str(e)}"
+            detail=f"批量获取视频地址失败: {str(e)}"
         )