feat(script_generator): 为 OpenAI、Qwen 和 Moonshot 生成器添加 base_url 参数

-为 OpenAIGenerator、QwenGenerator 和 MoonshotGenerator 类添加 base_url 参数
- 更新 ScriptProcessor 类以支持 base_url 参数
-调整 OpenAI 生成器的最大 token 数量从 7000 减少到 5000
- 移动 seconds_to_time 函数以减少代码重复

app/utils/script_generator.py

@@ -79,10 +79,11 @@ class BaseGenerator:
 
 class OpenAIGenerator(BaseGenerator):
     """OpenAI API 生成器实现"""
-    def __init__(self, model_name: str, api_key: str, prompt: str):
+    def __init__(self, model_name: str, api_key: str, prompt: str, base_url: str):
         super().__init__(model_name, api_key, prompt)
-        self.client = OpenAI(api_key=api_key)
+        base_url = base_url or f"https://api.openai.com/v1"
-        self.max_tokens = 7000
+        self.client = OpenAI(api_key=api_key, base_url=base_url)
+        self.max_tokens = 5000
         
         # OpenAI特定参数
         self.default_params = {
@@ -168,11 +169,11 @@ class GeminiGenerator(BaseGenerator):
 
 class QwenGenerator(BaseGenerator):
     """阿里云千问 API 生成器实现"""
-    def __init__(self, model_name: str, api_key: str, prompt: str):
+    def __init__(self, model_name: str, api_key: str, prompt: str, base_url: str):
         super().__init__(model_name, api_key, prompt)
         self.client = OpenAI(
             api_key=api_key,
-            base_url="https://dashscope.aliyuncs.com/compatible-mode/v1"
+            base_url=base_url or "https://dashscope.aliyuncs.com/compatible-mode/v1"
         )
         
         # Qwen特定参数
@@ -204,11 +205,11 @@ class QwenGenerator(BaseGenerator):
 
 class MoonshotGenerator(BaseGenerator):
     """Moonshot API 生成器实现"""
-    def __init__(self, model_name: str, api_key: str, prompt: str):
+    def __init__(self, model_name: str, api_key: str, prompt: str, base_url: str):
         super().__init__(model_name, api_key, prompt)
         self.client = OpenAI(
             api_key=api_key,
-            base_url="https://api.moonshot.cn/v1"
+            base_url=base_url or "https://api.moonshot.cn/v1"
         )
         
         # Moonshot特定参数
@@ -241,9 +242,10 @@ class MoonshotGenerator(BaseGenerator):
 
 
 class ScriptProcessor:
-    def __init__(self, model_name: str, api_key: str = None, prompt: str = None, video_theme: str = ""):
+    def __init__(self, model_name: str, api_key: str = None, base_url: str = None, prompt: str = None, video_theme: str = ""):
         self.model_name = model_name
         self.api_key = api_key
+        self.base_url = base_url
         self.video_theme = video_theme
         self.prompt = prompt or self._get_default_prompt()
 
@@ -251,11 +253,11 @@ class ScriptProcessor:
         if 'gemini' in model_name.lower():
             self.generator = GeminiGenerator(model_name, self.api_key, self.prompt)
         elif 'qwen' in model_name.lower():
-            self.generator = QwenGenerator(model_name, self.api_key, self.prompt)
+            self.generator = QwenGenerator(model_name, self.api_key, self.prompt, self.base_url)
         elif 'moonshot' in model_name.lower():
-            self.generator = MoonshotGenerator(model_name, self.api_key, self.prompt)
+            self.generator = MoonshotGenerator(model_name, self.api_key, self.prompt, self.base_url)
         else:
-            self.generator = OpenAIGenerator(model_name, self.api_key, self.prompt)
+            self.generator = OpenAIGenerator(model_name, self.api_key, self.prompt, self.base_url)
 
     def _get_default_prompt(self) -> str:
         return f"""你是一位极具幽默感的短视频脚本创作大师，擅长用"温和的违反"制造笑点，让{self.video_theme}视频既有趣又富有传播力。你的任务是将视频画面描述转化为能在社交平台疯狂传播的爆款口播文案。
@@ -334,6 +336,12 @@ class ScriptProcessor:
     def _save_results(self, frame_content_list: List[Dict]):
         """保存处理结果，并添加新的时间戳"""
         try:
+            # 转换秒数为 MM:SS 格式
+            def seconds_to_time(seconds):
+                minutes = seconds // 60
+                remaining_seconds = seconds % 60
+                return f"{minutes:02d}:{remaining_seconds:02d}"
+
             # 计算新的时间戳
             current_time = 0  # 当前时间点（秒）
 
@@ -350,12 +358,6 @@ class ScriptProcessor:
                 end_seconds = time_to_seconds(end_str)
                 duration = end_seconds - start_seconds
 
-                # 转换秒数为 MM:SS 格式
-                def seconds_to_time(seconds):
-                    minutes = seconds // 60
-                    remaining_seconds = seconds % 60
-                    return f"{minutes:02d}:{remaining_seconds:02d}"
-
                 # 设置新的时间戳
                 new_start = seconds_to_time(current_time)
                 new_end = seconds_to_time(current_time + duration)