ConversationController.java
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package com.xly.web;
import com.xly.agent.AgentIdentity;
import com.xly.service.AuthzService;
import com.xly.service.ConversationService;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.server.ResponseStatusException;
import java.util.List;
import java.util.Map;
/**
* 会话管理 REST —— 支撑前端的「多命名会话」侧栏（列表 / 新建 / 删除 / 历史）。
*
* <p><b>身份</b>：一律由 {@code Authorization} 头经 {@link AuthzService#resolveIdentity} 服务端内省得出，
* 不接受客户端自报的 userid；会话 id 绑定用户命名空间，越权访问他人会话直接 403。
*/
@RestController
@RequestMapping("/api/agent/conversations")
public class ConversationController {
private final ConversationService conversations;
private final AuthzService authz;
public ConversationController(ConversationService conversations, AuthzService authz) {
this.conversations = conversations;
this.authz = authz;
}
/** 列出当前登录用户的会话（最近更新在前）。 */
@GetMapping
public List<Map<String, Object>> list(@RequestHeader(value = "Authorization", required = false) String auth) {
return conversations.list(identity(auth).userId());
}
/** 新建空会话，返回 conversationId。 */
@PostMapping
public Map<String, String> create(@RequestHeader(value = "Authorization", required = false) String auth) {
return Map.of("conversationId", conversations.create(identity(auth).userId()));
}
/** 删除自己的会话（含消息记忆、账本、状态槽）。 */
@DeleteMapping("/{convId}")
public Map<String, Object> delete(@PathVariable("convId") String convId,
@RequestHeader(value = "Authorization", required = false) String auth) {
String uid = requireOwner(auth, convId);
conversations.delete(uid, convId);
return Map.of("ok", true);
}
/** 自己会话的历史消息（用于切换会话时回填）。 */
@GetMapping("/{convId}/messages")
public List<Map<String, String>> messages(@PathVariable("convId") String convId,
@RequestHeader(value = "Authorization", required = false) String auth) {
requireOwner(auth, convId);
return conversations.history(convId);
}
private AgentIdentity identity(String auth) {
AgentIdentity id = authz.resolveIdentity(auth);
if (id == null) {
throw new ResponseStatusException(HttpStatus.UNAUTHORIZED, "登录已过期或未登录");
}
return id;
}
private String requireOwner(String auth, String convId) {
AgentIdentity id = identity(auth);
if (!conversations.owns(id.userId(), convId)) {
throw new ResponseStatusException(HttpStatus.FORBIDDEN, "无权访问该会话");
}
return id.userId();
}
}