// @vitest-environment node
import { describe, it, expect, vi, beforeEach } from 'vitest'

// Mock asAdmin before importing the module under test
const mockInsert = vi.fn()
const mockValues = vi.fn().mockResolvedValue([])
vi.mock('@/lib/db/with-user', () => ({
  asAdmin: vi.fn().mockImplementation(fn =>
    fn({
      insert: mockInsert.mockReturnValue({ values: mockValues }),
    })
  ),
}))

import { createInAppNotifications } from '@/lib/notifications/in-app'

describe('createInAppNotifications', () => {
  beforeEach(() => {
    vi.clearAllMocks()
    mockInsert.mockReturnValue({ values: mockValues })
    mockValues.mockResolvedValue([])
  })

  it('inserts once per recipient', async () => {
    const { created } = await createInAppNotifications([
      { userId: 'u1', title: 'New incident', link: '/hse/incidents/i1', incidentId: 'i1' },
      { userId: 'u2', title: 'New incident', link: '/hse/incidents/i1', incidentId: 'i1' },
    ])
    expect(created).toBe(2)
    expect(mockValues).toHaveBeenCalledTimes(2)
  })

  it('skips entries missing userId or title', async () => {
    const { created } = await createInAppNotifications([
      { userId: '', title: 'x' },
      { userId: 'u1', title: '' },
    ])
    expect(created).toBe(0)
    expect(mockValues).not.toHaveBeenCalled()
  })

  it('counts only successful inserts; failed insert is caught', async () => {
    mockValues.mockRejectedValueOnce(new Error('DB error'))
    const { created } = await createInAppNotifications([
      { userId: 'u1', title: 'x' },
    ])
    expect(created).toBe(0)
  })

  it('deduplicates same userId+title+incidentId', async () => {
    const { created } = await createInAppNotifications([
      { userId: 'u1', title: 'same', incidentId: 'i1' },
      { userId: 'u1', title: 'same', incidentId: 'i1' },
    ])
    expect(created).toBe(1)
    expect(mockValues).toHaveBeenCalledTimes(1)
  })
})