feat(frontend): 步骤 6.4 — API 客户端封装

frontend/src/api/agent.ts

@@ -0,0 +1,62 @@
+import { API_CONFIG } from "@/config/api-config";
+import {
+  Response,
+  AiAgentConfigResponseDTO,
+  CreateSessionResponseDTO,
+  ChatRequestDTO,
+  ChatResponseDTO,
+} from "@/types/api";
+
+const handleResponse = async <T>(
+  response: globalThis.Response
+): Promise<Response<T>> => {
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new Error(`HTTP ${response.status}: ${errorText}`);
+  }
+  const data = await response.json();
+  if (data.code !== "0000") {
+    throw new Error(data.info || "Unknown API error");
+  }
+  return data;
+};
+
+export const agentApi = {
+  /**
+   * 查询已注册的 AI Agent 列表
+   * GET /api/v1/query_ai_agent_config_list
+   */
+  queryAgentList: async (): Promise<Response<AiAgentConfigResponseDTO[]>> => {
+    const resp = await fetch(`${API_CONFIG.BASE_URL}/query_ai_agent_config_list`);
+    return handleResponse<AiAgentConfigResponseDTO[]>(resp);
+  },
+
+  /**
+   * 创建聊天会话
+   * POST /api/v1/create_session
+   */
+  createSession: async (
+    agentId: string,
+    userId: string
+  ): Promise<Response<CreateSessionResponseDTO>> => {
+    const resp = await fetch(`${API_CONFIG.BASE_URL}/create_session`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ agentId, userId }),
+    });
+    return handleResponse<CreateSessionResponseDTO>(resp);
+  },
+
+  /**
+   * 发送聊天消息
+   * POST /api/v1/chat
+   */
+  chat: async (data: ChatRequestDTO): Promise<Response<ChatResponseDTO>> => {
+    const resp = await fetch(`${API_CONFIG.BASE_URL}/chat`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(data),
+    });
+    return handleResponse<ChatResponseDTO>(resp);
+  },
+};