/**
 * RED scaffold — reminderScheduler (Plan 05-06 turns this GREEN).
 *
 * Asserts that the reminder scan:
 *   - Selects ONLY shared (isShared=true) AND timed (allDay=false) events
 *     in the [now+14min, now+16min] window (D-05/D-06/D-07)
 *   - Does NOT dispatch reminders for all-day events (D-07)
 *   - Does NOT dispatch reminders for non-shared (personal) events (D-05)
 *   - Does NOT dispatch the same (eventUid, minuteBucket) twice within the same minute
 *
 * These tests fail now because reminderScheduler.ts does not yet exist.
 * Run: pnpm --filter @familysync/api exec vitest run tests/broker/reminderScheduler.test.ts
 */

import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'

// Mock the DB so we can control what events are returned
vi.mock('../../src/db/client.js', () => ({
  db: {
    select: vi.fn(),
  },
}))

// Mock pushDispatcher so no real push occurs
vi.mock('../../src/lib/pushDispatcher.js', () => ({
  dispatchPush: vi.fn().mockResolvedValue(undefined),
}))

describe('reminderScheduler — shared+timed event filtering (D-05/D-06/D-07)', () => {
  beforeEach(() => {
    vi.useFakeTimers()
    vi.resetModules()
  })

  afterEach(() => {
    vi.useRealTimers()
    vi.clearAllMocks()
  })

  it('does not dispatch reminders for all-day events (D-07)', async () => {
    const now = new Date('2026-06-15T10:00:00Z')
    vi.setSystemTime(now)

    const { db } = await import('../../src/db/client.js')
    const { dispatchPush } = await import('../../src/lib/pushDispatcher.js')
    const { runReminderCheck } = await import('../../src/broker/reminderScheduler.js')

    // Simulate: query returns an all-day event (allDay=true)
    // The scheduler should have filtered this out in SQL — return empty results
    vi.mocked(db.select).mockReturnValue({
      from: vi.fn().mockReturnValue({
        innerJoin: vi.fn().mockReturnValue({
          innerJoin: vi.fn().mockReturnValue({
            where: vi.fn().mockResolvedValue([]),
          }),
        }),
      }),
    } as never)

    await runReminderCheck()

    expect(vi.mocked(dispatchPush)).not.toHaveBeenCalled()
  })

  it('does not dispatch reminders for non-shared (personal) calendar events (D-05)', async () => {
    const now = new Date('2026-06-15T10:00:00Z')
    vi.setSystemTime(now)

    const { db } = await import('../../src/db/client.js')
    const { dispatchPush } = await import('../../src/lib/pushDispatcher.js')
    const { runReminderCheck } = await import('../../src/broker/reminderScheduler.js')

    // SQL WHERE clause must include isShared=true; no personal events returned
    vi.mocked(db.select).mockReturnValue({
      from: vi.fn().mockReturnValue({
        innerJoin: vi.fn().mockReturnValue({
          innerJoin: vi.fn().mockReturnValue({
            where: vi.fn().mockResolvedValue([]),
          }),
        }),
      }),
    } as never)

    await runReminderCheck()

    expect(vi.mocked(dispatchPush)).not.toHaveBeenCalled()
  })

  it('does not dispatch the same (eventUid, minuteBucket) pair twice within the same run', async () => {
    const now = new Date('2026-06-15T10:00:00Z')
    vi.setSystemTime(now)

    const { db } = await import('../../src/db/client.js')
    const { dispatchPush } = await import('../../src/lib/pushDispatcher.js')
    const { runReminderCheck } = await import('../../src/broker/reminderScheduler.js')

    const sharedTimedEvent = {
      uid: 'event-uid-123',
      title: 'Team standup',
      dtstartUtc: new Date('2026-06-15T10:15:00Z'), // 15 min from now
      allDay: false,
      isShared: true,
      subscriptions: [],
    }

    vi.mocked(db.select)
      .mockReturnValueOnce({
        from: vi.fn().mockReturnValue({
          innerJoin: vi.fn().mockReturnValue({
            innerJoin: vi.fn().mockReturnValue({
              where: vi.fn().mockResolvedValue([sharedTimedEvent]),
            }),
          }),
        }),
      } as never)
      .mockReturnValue({
        from: vi.fn().mockReturnValue({
          innerJoin: vi.fn().mockReturnValue({
            innerJoin: vi.fn().mockReturnValue({
              where: vi.fn().mockResolvedValue([sharedTimedEvent]),
            }),
          }),
        }),
      } as never)

    // First run — should dispatch
    await runReminderCheck()
    const firstCallCount = vi.mocked(dispatchPush).mock.calls.length

    // Second run in the same minute — same (uid, minuteBucket) — should NOT dispatch again
    await runReminderCheck()
    const secondCallCount = vi.mocked(dispatchPush).mock.calls.length

    expect(secondCallCount).toBe(firstCallCount)
  })
})