// Spec: docs/specs/wave-based-slack-onboarding.md
// Test plan: docs/specs/wave-based-slack-onboarding-tests.md §3 + §4
//
// Verifies that the three self-serve activation paths invoke
// `autoFlagPreExistingSlackAccess`, while the two admin-create paths do not.
//
// `autoFlagPreExistingSlackAccess` is auto-imported by Nitro at runtime; in
// tests it's stubbed as a global in tests/server/setup.js. Tests grab the stub
// off `globalThis` and reset it per-case.

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

import Member from '../../../server/models/member.js'
import { requireAuth } from '../../../server/utils/auth.js'
import { requiresPayment } from '../../../server/config/contributions.js'
import { sendWelcomeEmail } from '../../../server/utils/resend.js'
import { validateBody } from '../../../server/utils/validateBody.js'
// jwt and the auto-flag helper are mocked via globals/vi.mock
import PreRegistration from '../../../server/models/preRegistration.js'
import { createHelcimCustomer } from '../../../server/utils/helcim.js'
import subscriptionHandler from '../../../server/api/helcim/subscription.post.js'
import membersCreateHandler from '../../../server/api/members/create.post.js'
import inviteAcceptHandler from '../../../server/api/invite/accept.post.js'
import { createMockEvent } from '../helpers/createMockEvent.js'

vi.mock('../../../server/models/member.js', () => {
  const mockSave = vi.fn().mockResolvedValue(undefined)
  function MockMember(data) {
    Object.assign(this, data)
    this._id = 'new-member-123'
    this.status = data.status || 'pending_payment'
    this.save = mockSave
  }
  MockMember.findOne = vi.fn()
  MockMember.findOneAndUpdate = vi.fn()
  MockMember.findById = vi.fn()
  MockMember.findByIdAndUpdate = vi.fn()
  MockMember.create = vi.fn()
  MockMember._mockSave = mockSave
  return { default: MockMember }
})
vi.mock('../../../server/models/preRegistration.js', () => ({
  default: { findById: vi.fn(), findByIdAndUpdate: vi.fn() }
}))
vi.mock('../../../server/utils/mongoose.js', () => ({ connectDB: vi.fn() }))
vi.mock('../../../server/utils/auth.js', () => ({
  requireAuth: vi.fn(),
  getSignupBridgeMember: vi.fn().mockResolvedValue(null),
  setAuthCookie: vi.fn()
}))
vi.mock('../../../server/utils/slack.ts', () => ({
  getSlackService: vi.fn().mockReturnValue(null)
}))
vi.mock('../../../server/config/contributions.js', () => ({
  requiresPayment: vi.fn(),
  getHelcimPlanId: vi.fn()
}))
vi.mock('../../../server/utils/resend.js', () => ({
  sendWelcomeEmail: vi.fn().mockResolvedValue({ success: true })
}))
vi.mock('../../../server/utils/helcim.js', () => ({
  createHelcimSubscription: vi.fn(),
  generateIdempotencyKey: vi.fn().mockReturnValue('idem-key-1'),
  listHelcimCustomerTransactions: vi.fn().mockResolvedValue([]),
  createHelcimCustomer: vi.fn()
}))
vi.mock('../../../server/utils/payments.js', () => ({
  upsertPaymentFromHelcim: vi.fn().mockResolvedValue({ created: true, payment: { _id: 'p1' } })
}))
vi.mock('../../../server/utils/validateBody.js', () => ({ validateBody: vi.fn() }))
vi.mock('../../../server/utils/schemas.js', () => ({ memberCreateSchema: {} }))
vi.mock('../../../server/utils/memberNumber.js', () => ({
  assignMemberNumber: vi.fn().mockResolvedValue(1)
}))
vi.mock('jsonwebtoken', () => {
  const verify = vi.fn(() => ({ type: 'prereg-invite', preRegistrationId: 'prereg-1' }))
  return {
    default: { verify },
    verify
  }
})

vi.stubGlobal('helcimSubscriptionSchema', {})
vi.stubGlobal('inviteAcceptSchema', {})

const autoFlagStub = globalThis.autoFlagPreExistingSlackAccess

// ---------------------------------------------------------------------------
// 3.1 — Helcim subscription success calls helper
// ---------------------------------------------------------------------------
describe('POST /api/helcim/subscription — auto-flag wiring (3.1)', () => {
  beforeEach(() => {
    vi.clearAllMocks()
    autoFlagStub.mockClear()
    requireAuth.mockResolvedValue(undefined)
    requiresPayment.mockReturnValue(false)
  })

  it('calls autoFlagPreExistingSlackAccess after successful free-tier activation', async () => {
    const mockMember = {
      _id: 'member-1',
      email: 'free@example.com',
      name: 'Free Tier',
      circle: 'community',
      contributionAmount: 0,
      status: 'active'
    }
    Member.findOneAndUpdate.mockResolvedValue({ _id: 'member-1', status: 'pending_payment' })
    Member.findById.mockResolvedValue(mockMember)

    const event = createMockEvent({
      method: 'POST',
      path: '/api/helcim/subscription',
      body: { customerId: 'cust-1', contributionAmount: 0, customerCode: 'code-1' }
    })

    await subscriptionHandler(event)

    expect(autoFlagStub).toHaveBeenCalledTimes(1)
    expect(autoFlagStub).toHaveBeenCalledWith(
      expect.objectContaining({ _id: 'member-1', email: 'free@example.com' })
    )
  })
})

// ---------------------------------------------------------------------------
// 3.2 — Free-tier /api/invite/accept calls helper
// ---------------------------------------------------------------------------
describe('POST /api/invite/accept (free tier) — auto-flag wiring (3.2)', () => {
  beforeEach(() => {
    vi.clearAllMocks()
    autoFlagStub.mockClear()
    PreRegistration.findById.mockResolvedValue({
      _id: 'prereg-1',
      email: 'invitee@example.com',
      status: 'pending'
    })
    PreRegistration.findByIdAndUpdate.mockResolvedValue(undefined)
    Member.findOne.mockResolvedValue(null)
    Member.create.mockImplementation(async (data) => ({
      _id: 'new-member-via-invite',
      ...data
    }))
    // Handler uses Nitro auto-imported validateBody (global), not the explicit import
    globalThis.validateBody.mockResolvedValue({
      token: 'tok',
      preRegistrationId: 'prereg-1',
      name: 'New Invitee',
      circle: 'community',
      contributionAmount: 0
    })
  })

  it('calls helper after Member.create on the free-tier branch', async () => {
    const event = createMockEvent({ method: 'POST', path: '/api/invite/accept' })

    await inviteAcceptHandler(event)

    expect(autoFlagStub).toHaveBeenCalledTimes(1)
    expect(autoFlagStub).toHaveBeenCalledWith(
      expect.objectContaining({ _id: 'new-member-via-invite', email: 'invitee@example.com' })
    )
  })

  it('paid-tier branch does NOT call helper (3.3)', async () => {
    globalThis.validateBody.mockResolvedValue({
      token: 'tok',
      preRegistrationId: 'prereg-1',
      name: 'Paid Invitee',
      circle: 'community',
      contributionAmount: 25
    })
    createHelcimCustomer.mockResolvedValue({ id: 'cust-2', customerCode: 'code-2' })

    const event = createMockEvent({ method: 'POST', path: '/api/invite/accept' })

    await inviteAcceptHandler(event)

    expect(autoFlagStub).not.toHaveBeenCalled()
  })
})

// ---------------------------------------------------------------------------
// 3.8 — members/create.post.js calls helper instead of legacy inviteToSlack
// ---------------------------------------------------------------------------
describe('POST /api/members/create — auto-flag wiring (3.8)', () => {
  beforeEach(() => {
    vi.clearAllMocks()
    autoFlagStub.mockClear()
    Member.findOne.mockResolvedValue(null)
    Member._mockSave.mockResolvedValue(undefined)
    sendWelcomeEmail.mockResolvedValue({ success: true })
    validateBody.mockResolvedValue({
      email: 'mc@example.com',
      name: 'MC Member',
      circle: 'community',
      contributionAmount: 0
    })
  })

  it('calls helper instead of legacy inviteToSlack', async () => {
    const event = createMockEvent({ method: 'POST', path: '/api/members/create' })

    await membersCreateHandler(event)

    expect(autoFlagStub).toHaveBeenCalledTimes(1)
    expect(autoFlagStub).toHaveBeenCalledWith(
      expect.objectContaining({ email: 'mc@example.com' })
    )
  })
})