feat: 修改drawing 为django 接口

backend/ai/llm/adapter/tongyi.py

@@ -0,0 +1,44 @@
+from langchain_community.chat_models import ChatTongyi
+from http import HTTPStatus
+from urllib.parse import urlparse, unquote
+from pathlib import PurePosixPath
+import requests
+from dashscope import ImageSynthesis
+import os
+
+from llm.base import MultiModalAICapability
+
+
+class TongYiAdapter(MultiModalAICapability):
+    def __init__(self, api_key, model, **kwargs):
+        self.api_key = api_key
+        self.model = model
+        self.llm = ChatTongyi(api_key=api_key, model=model, streaming=True)
+
+    async def chat(self, messages, **kwargs):
+        # 兼容 DeepSeek 的调用方式
+        return await self.llm.ainvoke(messages)
+
+    async def stream_chat(self, messages, **kwargs):
+        async for chunk in self.llm.astream(messages):
+            yield chunk
+
+    def create_drawing_task(self, prompt: str, style='watercolor', size='1024*1024', n=1, **kwargs):
+        """创建异步图片生成任务"""
+        rsp = ImageSynthesis.async_call(
+            api_key=self.api_key,
+            model=self.model,
+            prompt=prompt,
+            n=n,
+            style=f'<{style}>',
+            size=size
+        )
+        return rsp
+
+    def fetch_drawing_task_status(self, task):
+        """获取异步图片任务状态"""
+        rsp = ImageSynthesis.fetch(task, api_key=self.api_key)
+        return rsp
+
+
+