/**
 * 游戏化核心流程集成测试
 *
 * 覆盖：游客登录 → 完成挑战组 → XP 累加 → 金币发放 → 商店购买 → 周榜分组
 * 使用 DB mock 模拟完整业务链路，验证跨服务协作正确性。
 */
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { db } from '../../db/client.js';
import { addXp } from '../../services/progress/xp-service.js';
import { grantFirstDailyChallengeCoins } from '../../services/gamification/coin-service.js';
import { getLeaderboard, getUserRank } from '../../services/gamification/leaderboard-service.js';
import { completeAdRecoverySession } from '../../services/rewards/ad-recovery-service.js';

// ── Mock 外部服务 ──────────────────────────────────────────────────

vi.mock('../../services/learning/progress-summary-service.js', () => ({
  getProgressSummary: vi.fn().mockResolvedValue({
    hearts: 2, maxHearts: 5, nextHeartRestoreAt: null,
    dailyAttemptsLeft: 2, dailyAttemptsMax: 3, nextAttemptResetAt: null,
    highRewardSessionsLeft: 2, highRewardSessionsMax: 3,
    xp: 0, level: 1, xpToNextLevel: 100,
    streakDays: 0, checkInDays: 0, streakProtectedUntil: null,
    activeTrackId: null, isSubscribed: false,
  }),
  getDailyAttempts: vi.fn().mockResolvedValue({ left: 2, max: 3 }),
}));

vi.mock('../../services/payment/subscription-service.js', () => ({
  getSubscriptionStatus: vi.fn().mockResolvedValue({ status: 'inactive', tier: 'free', expiresAt: null, autoRenew: false }),
}));

vi.mock('../../services/progress/streak-service.js', () => ({
  freezeStreak: vi.fn().mockResolvedValue({ streakDays: 5, checkInDays: 5, streakProtectedUntil: null }),
}));

// ── DB Mock 辅助 ───────────────────────────────────────────────────

/** 按 db.select() 调用顺序分配结果。 */
function setupSelectQueue(queue: unknown[][]) {
  let index = 0;
  vi.mocked(db.select).mockImplementation((() => {
    const rows = index < queue.length ? queue[index]! : [];
    index += 1;
    const limit = vi.fn().mockResolvedValue(rows);
    const orderBy = vi.fn().mockReturnValue({ limit });
    const gte = vi.fn().mockReturnValue({ lt: vi.fn().mockReturnValue({ orderBy }) });
    const where = vi.fn().mockReturnValue({ limit, orderBy, gte });
    const from = vi.fn().mockReturnValue({ where });
    return { from };
  }) as never);
}

function setupInsert() {
  const valuesSpy = vi.fn().mockReturnValue(undefined);
  vi.mocked(db.insert).mockReturnValue({ values: valuesSpy } as never);
  return valuesSpy;
}

function setupUpdate() {
  const setSpy = vi.fn().mockReturnValue({ where: vi.fn().mockResolvedValue({ affectedRows: 1 }) });
  vi.mocked(db.update).mockReturnValue({ set: setSpy } as never);
  return setSpy;
}

// ── 集成测试 ───────────────────────────────────────────────────────

describe('gamification integration flow', () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  it('完成挑战 XP → 金币发放 → 周榜分组', async () => {
    // 1. 完成挑战获得 XP（addXp 内部累加 userWeeklyXp）
    // addXp: update users + insert userWeeklyXp（查已有记录 + 查组人数）
    setupUpdate(); // update users
    setupSelectQueue([[]]); // 无已有 userWeeklyXp 记录
    setupSelectQueue([[]]); // 无已有组 → 创建新组
    const insertSpy = setupInsert(); // insert userWeeklyXp

    await addXp('user-1', 25);

    // 验证 XP 累加更新了 users 表
    expect(db.update).toHaveBeenCalled();
    // 验证周 XP 写入了 userWeeklyXp，包含分组 ID
    expect(insertSpy).toHaveBeenCalledWith(
      expect.objectContaining({
        userId: 'user-1',
        xpEarned: 25,
        groupId: expect.stringContaining('group-1'),
      }),
    );

    // 2. 每日首组挑战金币发放
    setupSelectQueue([[]] as unknown[][]); // 无已有金币交易
    setupSelectQueue([[{ balance: 0 }]] as unknown[][]); // getCoinBalance 返回 0
    setupSelectQueue([[{ id: 'inv-1' }]] as unknown[][]); // 钱包 upsert 查询
    setupInsert(); // inventoryTransaction + rewardLedger
    setupUpdate(); // incrementDailyCoins

    const coinResult = await grantFirstDailyChallengeCoins('user-1', 'session-1');
    expect(coinResult).not.toBeNull();
    expect(coinResult!.amount).toBe(20);

    // 4. 周榜查询（组内排名）
    setupSelectQueue([[{ groupId: 'week-2026-05-11-group-1' }]]); // getUserGroupId
    setupSelectQueue([[{ userId: 'user-1', weeklyXp: 25, nickname: '测试用户', avatarUrl: null }]]); // 组内成员

    const leaderboard = await getLeaderboard('user-1');
    expect(leaderboard.items).toHaveLength(1);
    expect(leaderboard.items[0]!.weeklyXp).toBe(25);
    expect(leaderboard.items[0]!.rank).toBe(1);
  });

  it('广告恢复爱心 → 奖励写入 rewardLedger', async () => {
    const now = new Date();
    const validSession = {
      id: 'session-ad-1',
      userId: 'user-1',
      type: 'hearts',
      status: 'pending',
      clientRequestId: 'req-ad-1',
      adProvider: 'mock',
      expiresAt: new Date(now.getTime() + 30 * 60 * 1000),
    };

    // completeAdRecoverySession 调用顺序：
    // getSession → rewardLedger 幂等检查 → getUserTier → completedCountToday
    setupSelectQueue([
      [validSession],
      [], // 无已有 rewardLedger
      [], // getUserTier → free
      [], // completedCountToday → 0
    ]);
    setupUpdate(); // update users + update session
    setupInsert(); // insert rewardLedger

    const result = await completeAdRecoverySession('user-1', {
      sessionId: 'session-ad-1',
      clientRequestId: 'req-ad-1',
      adProvider: 'mock',
      providerRewardToken: 'token-abc',
      completedAt: now.toISOString(),
    });

    expect(result.status).toBe('completed');
    expect(result.type).toBe('hearts');
    expect(result.reward!.heartsDelta).toBeGreaterThan(0);

    // 验证 rewardLedger 写入了正确的 sourceType
    expect(db.insert).toHaveBeenCalled();
  });

  it('用户组内排名统计', async () => {
    // getUserRank: 第一次查用户信息，第二次统计高排名人数
    let callIndex = 0;
    vi.mocked(db.select).mockImplementation((() => {
      callIndex += 1;
      if (callIndex === 1) {
        return {
          from: vi.fn().mockReturnValue({
            where: vi.fn().mockReturnValue({
              limit: vi.fn().mockResolvedValue([{ xpEarned: 100, groupId: 'group-A' }]),
            }),
          }),
        };
      }
      return {
        from: vi.fn().mockReturnValue({
          where: vi.fn().mockResolvedValue([{ count: 5 }]),
        }),
      };
    }) as never);

    const rank = await getUserRank('user-1');
    expect(rank).not.toBeNull();
    expect(rank!.rank).toBe(6); // 5 人比自己高 → 排名 6
    expect(rank!.weeklyXp).toBe(100);
  });
});