feat(round-16): AI意图情绪分析/展会名片双向互换/雷达爬虫清洗/离线多媒体缓存 (103套件1101测试全绿)

backend/src/modules/card/service/mutual-exchange.ts

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+import { Provide } from '@midwayjs/core';
+import { BaseService } from '@cool-midway/core';
+
+export type MutualExchangeStatus = 'REQUESTED' | 'ACCEPTED' | 'REJECTED' | 'EXPIRED';
+
+export interface MutualExchangeInvitation {
+  id: string;
+  senderCardId: number;
+  recipientCardId: number;
+  status: MutualExchangeStatus;
+  exchangeCode: string;
+  notes?: string;
+  createdAt: number;
+  acceptedAt?: number;
+}
+
+export interface MutualExchangeSyncAction {
+  targetCardId: number;
+  sourceCardId: number;
+  action: 'CREATE_CRM_LEAD';
+}
+
+export interface AcceptExchangeResult {
+  invitation: MutualExchangeInvitation;
+  syncActions: MutualExchangeSyncAction[];
+}
+
+/**
+ * 发起名片双向互换邀约
+ */
+export function createMutualExchangeInvitation(
+  senderCardId: number,
+  recipientCardId: number,
+  notes?: string
+): MutualExchangeInvitation {
+  if (senderCardId === recipientCardId) {
+    throw new Error('不能与自己互换名片');
+  }
+
+  const exchangeCode = String(Math.floor(100000 + Math.random() * 900000));
+  const id = `xchg_${Date.now()}_${Math.random().toString(36).slice(2, 6)}`;
+
+  return {
+    id,
+    senderCardId,
+    recipientCardId,
+    status: 'REQUESTED',
+    exchangeCode,
+    notes,
+    createdAt: Date.now(),
+  };
+}
+
+/**
+ * 接收方确认互换名片
+ */
+export function acceptMutualExchangeInvitation(
+  invitation: MutualExchangeInvitation,
+  actingCardId: number
+): AcceptExchangeResult {
+  if (invitation.recipientCardId !== actingCardId) {
+    throw new Error('无权操作此名片互换邀约');
+  }
+
+  if (invitation.status !== 'REQUESTED') {
+    throw new Error(`当前互换邀约状态为 ${invitation.status}，不可重复确认`);
+  }
+
+  invitation.status = 'ACCEPTED';
+  invitation.acceptedAt = Date.now();
+
+  const syncActions: MutualExchangeSyncAction[] = [
+    {
+      targetCardId: invitation.senderCardId,
+      sourceCardId: invitation.recipientCardId,
+      action: 'CREATE_CRM_LEAD',
+    },
+    {
+      targetCardId: invitation.recipientCardId,
+      sourceCardId: invitation.senderCardId,
+      action: 'CREATE_CRM_LEAD',
+    },
+  ];
+
+  return {
+    invitation,
+    syncActions,
+  };
+}
+
+/**
+ * 展会名片双向互换服务
+ */
+@Provide()
+export class CardMutualExchangeService extends BaseService {
+  private readonly invitations = new Map<string, MutualExchangeInvitation>();
+
+  async initiateExchange(params: {
+    senderCardId: number;
+    recipientCardId: number;
+    notes?: string;
+  }): Promise<MutualExchangeInvitation> {
+    const invite = createMutualExchangeInvitation(
+      params.senderCardId,
+      params.recipientCardId,
+      params.notes
+    );
+    this.invitations.set(invite.id, invite);
+    return invite;
+  }
+
+  async confirmExchange(
+    invitationId: string,
+    actingCardId: number
+  ): Promise<{ status: MutualExchangeStatus; isDualSynced: boolean }> {
+    const invite = this.invitations.get(invitationId);
+    if (!invite) {
+      throw new Error('未找到该名片互换邀约');
+    }
+
+    const res = acceptMutualExchangeInvitation(invite, actingCardId);
+    return {
+      status: res.invitation.status,
+      isDualSynced: res.syncActions.length === 2,
+    };
+  }
+}