import {
  CardMutualExchangeService,
  createMutualExchangeInvitation,
  acceptMutualExchangeInvitation,
  MutualExchangeInvitation,
} from '../../../src/modules/card/service/mutual-exchange';

describe('Point 62 (P1): 展会名片双向互换与 CRM 互加好友验证', () => {
  let service: CardMutualExchangeService;

  beforeEach(() => {
    service = new CardMutualExchangeService();
  });

  describe('1. 互换邀约发起与校验 (createMutualExchangeInvitation)', () => {
    it('应成功生成包含发起方名片与接收方名片的有效邀约 (REQUESTED)', () => {
      const invite = createMutualExchangeInvitation(101, 202);

      expect(invite.id).toBeDefined();
      expect(invite.senderCardId).toBe(101);
      expect(invite.recipientCardId).toBe(202);
      expect(invite.status).toBe('REQUESTED');
      expect(invite.exchangeCode).toHaveLength(6); // 6位简易换卡数字码
    });

    it('自己与自己互换应安全拒绝', () => {
      expect(() => createMutualExchangeInvitation(101, 101)).toThrow(/不能与自己互换/);
    });
  });

  describe('2. 接收方确认与状态流转 (acceptMutualExchangeInvitation)', () => {
    it('接收方确认后状态应流转为 ACCEPTED，并生成双向入库同步指令', () => {
      const invite = createMutualExchangeInvitation(101, 202);
      const result = acceptMutualExchangeInvitation(invite, 202);

      expect(result.invitation.status).toBe('ACCEPTED');
      expect(result.syncActions.length).toBe(2);
      expect(result.syncActions[0].targetCardId).toBe(101); // 同步到 101 的 CRM
      expect(result.syncActions[1].targetCardId).toBe(202); // 同步到 202 的 CRM
    });

    it('非指定接收方尝试确认时应被阻断', () => {
      const invite = createMutualExchangeInvitation(101, 202);
      expect(() => acceptMutualExchangeInvitation(invite, 999)).toThrow(/无权操作/);
    });
  });

  describe('3. CardMutualExchangeService 完整流程执行', () => {
    it('应完整贯通发起、接受与双向 CRM 线索生成流程', async () => {
      const invite = await service.initiateExchange({
        senderCardId: 301,
        recipientCardId: 402,
        notes: 'Met at CES 2026 Eureka Park',
      });

      expect(invite.status).toBe('REQUESTED');

      const outcome = await service.confirmExchange(invite.id, 402);
      expect(outcome.status).toBe('ACCEPTED');
      expect(outcome.isDualSynced).toBe(true);
      expect(invite.persisted).toBe(false);
      expect(outcome.persisted).toBe(false);
    });

    it('仅内存 Map 保存时，创建与确认结果均应带 persisted:false', async () => {
      // 无仓库注入：不得假装已入库
      expect((service as any).exchangeEntity).toBeUndefined();

      const invite = await service.initiateExchange({
        senderCardId: 501,
        recipientCardId: 602,
      });
      expect(invite.persisted).toBe(false);

      const outcome = await service.confirmExchange(invite.id, 602);
      expect(outcome.status).toBe('ACCEPTED');
      expect(outcome.persisted).toBe(false);
    });

    it('有仓库且写入成功时，创建与确认结果均应带 persisted:true', async () => {
      let nextId = 1001;
      const store = new Map<number, any>();
      (service as any).exchangeEntity = {
        save: async (row: any) => {
          if (!row.id) {
            row.id = nextId++;
          }
          store.set(Number(row.id), { ...row });
          return row;
        },
        findOne: async ({ where }: { where: { id?: number } }) => {
          if (where?.id == null) return null;
          const hit = store.get(Number(where.id));
          return hit ? { ...hit } : null;
        },
      };

      const invite = await service.initiateExchange({
        senderCardId: 701,
        recipientCardId: 802,
      });
      expect(invite.persisted).toBe(true);
      expect(invite.id).toBe('1001');

      const outcome = await service.confirmExchange(invite.id, 802);
      expect(outcome.status).toBe('ACCEPTED');
      expect(outcome.persisted).toBe(true);
    });

    it('找不到邀约时应报错，不得伪造成功互换', async () => {
      await expect(
        service.confirmExchange('xchg_missing_nowhere', 402)
      ).rejects.toThrow(/未找到该名片互换邀约/);
    });

    it('有仓库但库中与内存均无此邀约时，确认应失败而非造一条成功互换', async () => {
      (service as any).exchangeEntity = {
        findOne: async () => null,
        save: async (row: any) => row,
      };
      await expect(service.confirmExchange('99999', 402)).rejects.toThrow(
        /未找到该名片互换邀约/
      );
    });
  });
});