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

const { mockSend } = vi.hoisted(() => ({
  mockSend: vi.fn(),
}))

vi.mock('resend', () => {
  function MockResend() {}
  MockResend.prototype.emails = { send: mockSend }
  return { Resend: MockResend }
})

// Mock asAdmin: first call returns recipients, second returns incident+join rows
let asAdminCallCount = 0
const mockRecipients = [
  { email: 'supervisor@setiacorp.com' },
  { email: 'hse@setiacorp.com' },
]
const mockIncidentRows = [{
  reportedAt: new Date('2026-07-10T09:00:00Z'),
  siteName: 'SCW1',
  reporterName: 'John Doe',
}]

vi.mock('@/lib/db/with-user', () => ({
  asAdmin: vi.fn().mockImplementation((fn: (db: unknown) => unknown) => {
    asAdminCallCount++
    if (asAdminCallCount % 2 === 1) {
      // first call: recipients query
      return Promise.resolve(mockRecipients)
    }
    // second call: incident join query
    return Promise.resolve(mockIncidentRows)
  }),
}))

import { sendNewIncidentEmail } from '@/lib/notifications/email'

beforeEach(() => {
  vi.clearAllMocks()
  asAdminCallCount = 0
  mockSend.mockResolvedValue({ data: { id: 'email-123' }, error: null })
})

describe('sendNewIncidentEmail', () => {
  it('sends email to supervisor and hse users', async () => {
    await sendNewIncidentEmail('inc-001', 'site-001', 'SCW1-202607-0001', 'near_miss')
    expect(mockSend).toHaveBeenCalledTimes(1)
    const call = mockSend.mock.calls[0][0]
    expect(call.to).toEqual(expect.arrayContaining(['supervisor@setiacorp.com', 'hse@setiacorp.com']))
    expect(call.subject).toContain('SCW1-202607-0001')
  })

  it('does not send if no recipients', async () => {
    const { asAdmin } = await import('@/lib/db/with-user')
    vi.mocked(asAdmin).mockResolvedValueOnce([])
    await sendNewIncidentEmail('inc-001', 'site-001', 'SCW1-202607-0001', 'near_miss')
    expect(mockSend).not.toHaveBeenCalled()
  })
})