import { afterAll, beforeEach, describe, expect, it, vi } from 'vitest'
import { prisma } from '../setup'
import {
  createTestUser,
  createTestProgram,
  createTestProject,
  cleanupTestData,
  uid,
} from '../helpers'

vi.mock('@/lib/email', async () => {
  const actual = await vi.importActual<typeof import('@/lib/email')>('@/lib/email')
  return {
    ...actual,
    sendLunchReminderEmail: vi.fn(async () => undefined),
    sendLunchRecapEmail: vi.fn(async () => undefined),
  }
})

const programIds: string[] = []
const userIds: string[] = []

afterAll(async () => {
  for (const programId of programIds) {
    await prisma.memberLunchPick.deleteMany({
      where: { attendingMember: { confirmation: { project: { programId } } } },
    })
    await prisma.attendingMember.deleteMany({
      where: { confirmation: { project: { programId } } },
    })
    await prisma.finalistConfirmation.deleteMany({ where: { project: { programId } } })
    await prisma.dish.deleteMany({ where: { lunchEvent: { programId } } })
    await prisma.lunchEvent.deleteMany({ where: { programId } })
    await cleanupTestData(programId, [])
  }
  if (userIds.length > 0) {
    await prisma.auditLog.deleteMany({ where: { userId: { in: userIds } } })
    await prisma.user.deleteMany({ where: { id: { in: userIds } } })
  }
})

async function callCron(
  path: 'lunch-reminders' | 'lunch-recap',
  secret = process.env.CRON_SECRET ?? '',
) {
  const mod =
    path === 'lunch-reminders'
      ? await import('@/app/api/cron/lunch-reminders/route')
      : await import('@/app/api/cron/lunch-recap/route')
  const req = new Request(`http://test.local/api/cron/${path}`, {
    method: 'GET',
    headers: secret ? { 'x-cron-secret': secret } : {},
  })
  return mod.GET(req as unknown as Parameters<typeof mod.GET>[0])
}

describe('GET /api/cron/lunch-reminders', () => {
  beforeEach(async () => {
    vi.clearAllMocks()
    if (!process.env.CRON_SECRET) process.env.CRON_SECRET = 'test-secret'
  })

  it('rejects without CRON_SECRET', async () => {
    const res = await callCron('lunch-reminders', '')
    expect(res.status).toBe(401)
  })

  it('skips events outside the reminder window', async () => {
    const program = await createTestProgram({ name: `cron-rmd-out-${uid()}` })
    programIds.push(program.id)
    await prisma.lunchEvent.create({
      data: {
        programId: program.id,
        enabled: true,
        eventAt: new Date(Date.now() + 30 * 86_400_000),
        changeCutoffHours: 48,
        reminderHoursBeforeDeadline: 24,
      },
    })
    const res = await callCron('lunch-reminders')
    expect(res.status).toBe(200)
    const { sendLunchReminderEmail } = await import('@/lib/email')
    expect(sendLunchReminderEmail).not.toHaveBeenCalled()
  })

  it('sends reminders for unpicked attendees inside the window and stamps reminderSentAt', async () => {
    const program = await createTestProgram({ name: `cron-rmd-in-${uid()}` })
    programIds.push(program.id)
    const u = await createTestUser('APPLICANT')
    userIds.push(u.id)
    const project = await createTestProject(program.id, {
      title: `cron-${uid()}`, competitionCategory: 'STARTUP',
    })
    const conf = await prisma.finalistConfirmation.create({
      data: {
        projectId: project.id, category: 'STARTUP', status: 'CONFIRMED',
        deadline: new Date(Date.now() + 86_400_000), token: `tok-${uid()}`,
      },
    })
    const am = await prisma.attendingMember.create({
      data: { confirmationId: conf.id, userId: u.id },
    })
    await prisma.memberLunchPick.create({ data: { attendingMemberId: am.id } })
    const eventAt = new Date(Date.now() + 25 * 3_600_000) // 25h from now
    await prisma.lunchEvent.create({
      data: {
        programId: program.id,
        enabled: true,
        eventAt, // deadline = eventAt - 24h cutoff = ~1h from now
        changeCutoffHours: 24,
        reminderHoursBeforeDeadline: 4, // window: deadline-4h .. deadline → spans now
      },
    })
    const res = await callCron('lunch-reminders')
    expect(res.status).toBe(200)
    const { sendLunchReminderEmail } = await import('@/lib/email')
    expect(sendLunchReminderEmail).toHaveBeenCalledTimes(1)
    const row = await prisma.lunchEvent.findUnique({ where: { programId: program.id } })
    expect(row?.reminderSentAt).not.toBeNull()
  })

  it('is idempotent — re-running with reminderSentAt set does not resend', async () => {
    const program = await createTestProgram({ name: `cron-rmd-idem-${uid()}` })
    programIds.push(program.id)
    await prisma.lunchEvent.create({
      data: {
        programId: program.id,
        enabled: true,
        eventAt: new Date(Date.now() + 25 * 3_600_000),
        changeCutoffHours: 24,
        reminderHoursBeforeDeadline: 4,
        reminderSentAt: new Date(),
      },
    })
    const res = await callCron('lunch-reminders')
    expect(res.status).toBe(200)
    const { sendLunchReminderEmail } = await import('@/lib/email')
    expect(sendLunchReminderEmail).not.toHaveBeenCalled()
  })
})

describe('GET /api/cron/lunch-recap', () => {
  beforeEach(async () => {
    vi.clearAllMocks()
    if (!process.env.CRON_SECRET) process.env.CRON_SECRET = 'test-secret'
  })

  it('rejects without CRON_SECRET', async () => {
    const res = await callCron('lunch-recap', '')
    expect(res.status).toBe(401)
  })

  it('skips events with cronEnabled=false', async () => {
    const program = await createTestProgram({ name: `cron-rec-off-${uid()}` })
    programIds.push(program.id)
    await prisma.lunchEvent.create({
      data: {
        programId: program.id, enabled: true, cronEnabled: false,
        eventAt: new Date(Date.now() - 86_400_000),
        changeCutoffHours: 24,
      },
    })
    const res = await callCron('lunch-recap')
    expect(res.status).toBe(200)
    const { sendLunchRecapEmail } = await import('@/lib/email')
    expect(sendLunchRecapEmail).not.toHaveBeenCalled()
  })

  it('skips events with recapSentAt already set', async () => {
    const program = await createTestProgram({ name: `cron-rec-sent-${uid()}` })
    programIds.push(program.id)
    await prisma.lunchEvent.create({
      data: {
        programId: program.id, enabled: true, cronEnabled: true,
        eventAt: new Date(Date.now() - 86_400_000),
        changeCutoffHours: 24, recapSentAt: new Date(),
      },
    })
    const res = await callCron('lunch-recap')
    expect(res.status).toBe(200)
    const { sendLunchRecapEmail } = await import('@/lib/email')
    expect(sendLunchRecapEmail).not.toHaveBeenCalled()
  })

  it('sends recap once and stamps recapSentAt when past deadline', async () => {
    const program = await createTestProgram({ name: `cron-rec-go-${uid()}` })
    programIds.push(program.id)
    const admin = await createTestUser('SUPER_ADMIN')
    userIds.push(admin.id)
    await prisma.lunchEvent.create({
      data: {
        programId: program.id, enabled: true, cronEnabled: true,
        eventAt: new Date(Date.now() - 86_400_000),
        changeCutoffHours: 24,
      },
    })
    const res = await callCron('lunch-recap')
    expect(res.status).toBe(200)
    const { sendLunchRecapEmail } = await import('@/lib/email')
    expect(sendLunchRecapEmail).toHaveBeenCalledTimes(1)
    const row = await prisma.lunchEvent.findUnique({ where: { programId: program.id } })
    expect(row?.recapSentAt).not.toBeNull()
  })
})