更新项目格式及部分ui细节

chatbot.py

@@ -0,0 +1,83 @@
+import json
+import aiohttp
+import config
+
+async def chat_with_ai(message: str, history: list):
+    """
+    与 AI 模型进行流式对话。
+    """
+    system_prompt = """你是一位精通自动控制原理的专家教授。请用清晰、准确、专业的中文来回答有关自动控制课程内容的问题。
+
+重要规则：
+1. 当需要表达数学公式时，必须使用 LaTeX 格式
+2. 行内公式使用 $公式$ 或 \\(公式\\)
+3. 独立公式使用 $$公式$$ 或 \\[公式\\]
+4. 例如：传递函数可以写成 $G(s) = \\frac{K}{s(s+1)}$
+5. 二阶系统标准形式：$$G(s) = \\frac{\\omega_n^2}{s^2 + 2\\zeta\\omega_n s + \\omega_n^2}$$
+
+请在适当的时候使用公式和示例来辅助解释。"""
+    
+    if not config.API_KEY or config.API_KEY.strip() == "":
+        history.append({"role": "assistant", "content": "❌ 错误：API_KEY 未配置。请在 config.py 文件中配置 API_KEY。"})
+        yield history
+        return
+    
+    history.append({"role": "user", "content": message})
+    
+    # 添加临时的 "正在思考" 消息
+    history.append({"role": "assistant", "content": "正在思考..."})
+    yield history
+
+    bot_response = ""
+    
+    try:
+        if config.API_TYPE == "deepseek":
+            api_url = f"{config.API_BASE_URL}/chat/completions"
+            messages_for_api = [{"role": "system", "content": system_prompt}] + history[:-1]
+            
+            payload = {
+                "model": config.API_MODEL,
+                "messages": messages_for_api,
+                "stream": True, "temperature": 0.7, "max_tokens": 2048
+            }
+            headers = {
+                "Content-Type": "application/json",
+                "Authorization": f"Bearer {config.API_KEY}"
+            }
+            
+            async with aiohttp.ClientSession() as session:
+                async with session.post(api_url, json=payload, headers=headers, timeout=aiohttp.ClientTimeout(total=60)) as response:
+                    if response.status == 200:
+                        async for line in response.content:
+                            line = line.decode('utf-8').strip()
+                            if not line or line == "data: [DONE]": continue
+                            if line.startswith("data: "): line = line[6:]
+                            try:
+                                data = json.loads(line)
+                                if "choices" in data and len(data["choices"]) > 0:
+                                    delta = data["choices"][0].get("delta", {})
+                                    content = delta.get("content", "")
+                                    if content:
+                                        bot_response += content
+                                        history[-1]["content"] = bot_response
+                                        yield history
+                            except json.JSONDecodeError:
+                                pass
+                        
+                        if not bot_response:
+                            history[-1]["content"] = "⚠️ API 返回了空响应，请稍后重试。"
+                            yield history
+                    else:
+                        error_text = await response.text()
+                        history[-1]["content"] = f"❌ API请求出错 (状态码: {response.status}):\n{error_text}"
+                        yield history
+        else:
+            history[-1]["content"] = f"❌ 不支持的 API 类型: {config.API_TYPE}"
+            yield history
+
+    except aiohttp.ClientError as e:
+        history[-1]["content"] = f"❌ 网络连接错误: {e}"
+        yield history
+    except Exception as e:
+        history[-1]["content"] = f"❌ 发生错误: {type(e).__name__}: {e}"
+        yield history