/**
 * Notification lifecycle integration tests.
 *
 * Verifies:
 *  - createNotification() inserts a row and returns it
 *  - Calling again with same dedupeKey within cooldown returns null (suppressed)
 *  - Calling after cooldown expiry creates a new notification
 *  - system_alert type bypasses preference check
 *  - markRead → isRead becomes true
 *  - markAllRead → all notifications for user become read
 *  - getUnreadCount returns correct count
 *
 * Skips gracefully when TEST_DATABASE_URL is not reachable.
 */
import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';

const TEST_DB_URL =
  process.env.TEST_DATABASE_URL || 'postgresql://test:test@localhost:5433/portnimara_test';

let dbAvailable = false;

beforeAll(async () => {
  try {
    const postgres = (await import('postgres')).default;
    const sql = postgres(TEST_DB_URL, { max: 1, idle_timeout: 3, connect_timeout: 3 });
    await sql`SELECT 1`;
    await sql.end();
    dbAvailable = true;
  } catch {
    console.warn(
      '[notification-lifecycle] Test database not available — skipping integration tests',
    );
  }
});

function itDb(name: string, fn: () => Promise<void>) {
  it(name, async () => {
    if (!dbAvailable) return;
    await fn();
  });
}

// ─── Helpers ─────────────────────────────────────────────────────────────────

async function seedPortAndUser(): Promise<{ portId: string; userId: string }> {
  const postgres = (await import('postgres')).default;
  const sql = postgres(TEST_DB_URL, { max: 1 });

  const portId = crypto.randomUUID();
  const userId = crypto.randomUUID();

  await sql`
    INSERT INTO ports (id, name, slug, country, currency, timezone)
    VALUES (${portId}, 'Notif Test Port', ${'notif-' + portId.slice(0, 8)}, 'AU', 'AUD', 'UTC')
  `;

  await sql`
    INSERT INTO "user" (id, name, email, email_verified, created_at, updated_at)
    VALUES (${userId}, 'Notif User', ${'notif-' + userId.slice(0, 8) + '@test.local'}, true, NOW(), NOW())
  `;

  await sql`
    INSERT INTO user_profiles (id, user_id, display_name, is_super_admin, is_active, preferences)
    VALUES (${crypto.randomUUID()}, ${userId}, 'Notif User', false, true, '{}')
  `;

  await sql.end();
  return { portId, userId };
}

async function cleanupPortAndUser(portId: string, userId: string): Promise<void> {
  const postgres = (await import('postgres')).default;
  const sql = postgres(TEST_DB_URL, { max: 1 });
  await sql`DELETE FROM ports WHERE id = ${portId}`;
  await sql`DELETE FROM user_profiles WHERE user_id = ${userId}`;
  await sql`DELETE FROM "user" WHERE id = ${userId}`;
  await sql.end();
}

// ─── Tests ────────────────────────────────────────────────────────────────────

describe('Notification Lifecycle', () => {
  let portId: string;
  let userId: string;

  // Mock socket and queue — these are tested in isolation here
  vi.mock('@/lib/socket/server', () => ({ emitToRoom: vi.fn() }));
  vi.mock('@/lib/queue', () => ({
    getQueue: () => ({ add: vi.fn().mockResolvedValue(undefined) }),
  }));

  beforeAll(async () => {
    if (!dbAvailable) return;
    ({ portId, userId } = await seedPortAndUser());
  });

  afterAll(async () => {
    if (!dbAvailable) return;
    await cleanupPortAndUser(portId, userId);
  });

  itDb('createNotification inserts a row and returns it', async () => {
    const { createNotification } = await import('@/lib/services/notifications.service');

    const notif = await createNotification({
      portId,
      userId,
      type: 'interest_stage_changed',
      title: 'Test notification',
      description: 'A test',
      link: '/interests/123',
      entityType: 'interest',
      entityId: 'test-entity-1',
    });

    expect(notif).not.toBeNull();
    expect(notif!.id).toBeDefined();
    expect(notif!.portId).toBe(portId);
    expect(notif!.userId).toBe(userId);
    expect(notif!.isRead).toBe(false);
    expect(notif!.title).toBe('Test notification');
  });

  itDb('duplicate dedupeKey within cooldown returns null (suppressed)', async () => {
    const { createNotification } = await import('@/lib/services/notifications.service');

    const dedupeKey = `interest:dedup-test-${crypto.randomUUID()}:stage:details_sent`;
    const params = {
      portId,
      userId,
      type: 'interest_stage_changed',
      title: 'Dedup test',
      dedupeKey,
      cooldownMs: 300_000,
    };

    const first = await createNotification(params);
    expect(first).not.toBeNull();

    const second = await createNotification(params);
    expect(second).toBeNull();
  });

  itDb('dedupeKey with expired cooldown creates a new notification', async () => {
    const { createNotification } = await import('@/lib/services/notifications.service');

    const dedupeKey = `interest:expired-cooldown-${crypto.randomUUID()}:stage:open`;
    const params = {
      portId,
      userId,
      type: 'interest_stage_changed',
      title: 'Expired cooldown test',
      dedupeKey,
      cooldownMs: 0,
    };

    const first = await createNotification(params);
    expect(first).not.toBeNull();

    const second = await createNotification(params);
    expect(second).not.toBeNull();
    expect(second!.id).not.toBe(first!.id);
  });

  itDb('system_alert type bypasses preference check and is always inserted', async () => {
    const { createNotification } = await import('@/lib/services/notifications.service');
    const postgres = (await import('postgres')).default;
    const sql = postgres(TEST_DB_URL, { max: 1 });

    // Insert a preference that would block a non-system notification
    await sql`
      INSERT INTO user_notification_preferences
        (id, user_id, port_id, notification_type, in_app, email)
      VALUES (${crypto.randomUUID()}, ${userId}, ${portId}, 'blocked_type', false, false)
      ON CONFLICT DO NOTHING
    `;
    await sql.end();

    // system_alert MUST still be inserted regardless of any preference
    const notif = await createNotification({
      portId,
      userId,
      type: 'system_alert',
      title: 'System alert test',
    });

    expect(notif).not.toBeNull();
    expect(notif!.type).toBe('system_alert');
  });

  itDb('markRead sets isRead to true', async () => {
    const { createNotification, markRead } = await import('@/lib/services/notifications.service');
    const postgres = (await import('postgres')).default;

    const notif = await createNotification({
      portId,
      userId,
      type: 'system_alert',
      title: 'Mark-read test',
    });

    expect(notif).not.toBeNull();
    expect(notif!.isRead).toBe(false);

    await markRead(notif!.id, userId);

    const sql = postgres(TEST_DB_URL, { max: 1 });
    const rows = await sql<Array<{ is_read: boolean }>>`
      SELECT is_read FROM notifications WHERE id = ${notif!.id}
    `;
    await sql.end();

    expect(rows[0]?.is_read).toBe(true);
  });

  itDb('markAllRead sets all unread notifications for the user to read', async () => {
    const { createNotification, markAllRead, getUnreadCount } = await import(
      '@/lib/services/notifications.service'
    );

    await createNotification({ portId, userId, type: 'system_alert', title: 'Unread 1' });
    await createNotification({ portId, userId, type: 'system_alert', title: 'Unread 2' });

    const before = await getUnreadCount(userId, portId);
    expect(before.count).toBeGreaterThan(0);

    await markAllRead(userId, portId);

    const after = await getUnreadCount(userId, portId);
    expect(after.count).toBe(0);
  });

  itDb('getUnreadCount returns accurate count', async () => {
    const { createNotification, getUnreadCount, markAllRead } = await import(
      '@/lib/services/notifications.service'
    );

    await markAllRead(userId, portId);

    const baseline = await getUnreadCount(userId, portId);
    expect(baseline.count).toBe(0);

    await createNotification({ portId, userId, type: 'system_alert', title: 'Count test 1' });
    await createNotification({ portId, userId, type: 'system_alert', title: 'Count test 2' });

    const after = await getUnreadCount(userId, portId);
    expect(after.count).toBe(2);
  });
});