feat(service): 优化视频生成功能

- 为 video_toDouyin 添加重试机制，最多重试 3 次
- 修改 get_task_result 函数，返回 None 以便于上层处理重试逻辑

service/doudian_service.py

@@ -146,16 +146,23 @@ def generate_video(task: dict):
         ua = headers['user-agent']
     else:
         raise Exception('User-Agent not found')
-    a_bogus = generate_a_bogus(params, json_data, ua)
-    params['a_bogus'] = a_bogus
-    logger.info("开始生成视频")
-    url = 'https://fxg.jinritemai.com/product/tproduct/material/imageTextVideo/submitImgOptimizeTask4PC'
-    response = doudian_request("POST", url, proxies, params, json=json_data, headers=headers, cookies=cookies)
-    task_id = response['data']['task_id']
-    logger.info(f"任务id --> {task_id}")
-    tool_source = response['data']['tool_source']
-    result = get_task_result(task_id, headers, tool_source, ua, proxies, cookies)
-    return result
+    retry_count = 0
+    while True:
+        if retry_count > 3:
+            raise Exception('生成视频失败')
+        a_bogus = generate_a_bogus(params, json_data, ua)
+        params['a_bogus'] = a_bogus
+        logger.info("开始生成视频")
+        url = 'https://fxg.jinritemai.com/product/tproduct/material/imageTextVideo/submitImgOptimizeTask4PC'
+        response = doudian_request("POST", url, proxies, params, json=json_data, headers=headers, cookies=cookies)
+        task_id = response['data']['task_id']
+        logger.info(f"任务id --> {task_id}")
+        tool_source = response['data']['tool_source']
+        result = get_task_result(task_id, headers, tool_source, ua, proxies, cookies)
+        if not result:
+            retry_count += 1
+            continue
+        return result
 
 def get_task_result(task_id: str, headers: dict, tool_source: str, ua, proxies, cookies):
     """获取任务结果"""
@@ -186,4 +193,5 @@ def get_task_result(task_id: str, headers: dict, tool_source: str, ua, proxies,
             logger.success(f'视频生成成功-->{result}')
             return result
         else:
-            raise Exception(f'任务执行失败-->{msg}')
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+            logger.error(f'任务执行失败-->{msg}')
+            return None
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