/**
 * Task 6: Travel + visa attendee emails
 * Tests that setFlightStatus(CONFIRMED) and updateVisaApplication(status change)
 * create the right InAppNotification rows for the attending member.
 */
import { afterAll, describe, expect, it } from 'vitest'
import { prisma, createCaller } from '../setup'
import {
  createTestUser,
  createTestProgram,
  createTestProject,
  cleanupTestData,
  uid,
} from '../helpers'
import { logisticsRouter } from '../../src/server/routers/logistics'

// ---------------------------------------------------------------------------
// Shared helpers
// ---------------------------------------------------------------------------

async function createApplicant(tag: string) {
  const id = uid('user')
  return prisma.user.create({
    data: {
      id,
      email: `${tag}_${id}@test.local`,
      name: `Test User ${tag}`,
      role: 'APPLICANT',
      roles: ['APPLICANT'],
      status: 'ACTIVE',
    },
  })
}

/**
 * Creates a confirmed attendee with a flight detail row in PENDING status.
 * Returns all entities needed by the tests.
 */
async function setupFlightScenario(label: string) {
  const program = await createTestProgram({ name: `comms-flight-${label}-${uid()}` })
  const user = await createApplicant(`flight_${label}`)
  const project = await createTestProject(program.id, {
    title: `Project ${label}`,
    competitionCategory: 'STARTUP',
  })
  await prisma.teamMember.create({
    data: { projectId: project.id, userId: user.id, role: 'LEAD' },
  })
  const confirmation = await prisma.finalistConfirmation.create({
    data: {
      projectId: project.id,
      category: 'STARTUP',
      status: 'CONFIRMED',
      deadline: new Date(Date.now() + 86_400_000),
      token: `tok_${uid()}`,
      confirmedAt: new Date(),
    },
  })
  const attendingMember = await prisma.attendingMember.create({
    data: { confirmationId: confirmation.id, userId: user.id, needsVisa: false },
  })
  const flightDetail = await prisma.flightDetail.create({
    data: {
      attendingMemberId: attendingMember.id,
      arrivalAt: new Date('2026-06-28T12:00:00Z'),
      arrivalFlightNumber: 'AF7400',
      arrivalAirport: 'NCE',
      departureAt: new Date('2026-07-01T16:00:00Z'),
      departureFlightNumber: 'AF7401',
      departureAirport: 'NCE',
      status: 'PENDING',
    },
  })
  return { program, user, project, confirmation, attendingMember, flightDetail }
}

/**
 * Creates a confirmed attendee with a visa application in REQUESTED status.
 */
async function setupVisaScenario(label: string) {
  const program = await createTestProgram({ name: `comms-visa-${label}-${uid()}` })
  const user = await createApplicant(`visa_${label}`)
  const project = await createTestProject(program.id, {
    title: `Visa Project ${label}`,
    competitionCategory: 'STARTUP',
  })
  await prisma.teamMember.create({
    data: { projectId: project.id, userId: user.id, role: 'LEAD' },
  })
  const confirmation = await prisma.finalistConfirmation.create({
    data: {
      projectId: project.id,
      category: 'STARTUP',
      status: 'CONFIRMED',
      deadline: new Date(Date.now() + 86_400_000),
      token: `tok_${uid()}`,
      confirmedAt: new Date(),
    },
  })
  const attendingMember = await prisma.attendingMember.create({
    data: { confirmationId: confirmation.id, userId: user.id, needsVisa: true },
  })
  const visaApplication = await prisma.visaApplication.create({
    data: { attendingMemberId: attendingMember.id, status: 'REQUESTED' },
  })
  return { program, user, project, confirmation, attendingMember, visaApplication }
}

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

describe('logistics comms: flight confirmed notification', () => {
  const programIds: string[] = []
  const userIds: string[] = []

  afterAll(async () => {
    // Clean up InAppNotification rows first
    for (const userId of userIds) {
      await prisma.inAppNotification.deleteMany({ where: { userId } })
    }
    for (const programId of programIds) {
      await prisma.flightDetail.deleteMany({
        where: { attendingMember: { confirmation: { project: { programId } } } },
      })
      await prisma.attendingMember.deleteMany({
        where: { confirmation: { project: { programId } } },
      })
      await prisma.finalistConfirmation.deleteMany({ where: { project: { programId } } })
      await cleanupTestData(programId, [])
    }
    if (userIds.length > 0) {
      await prisma.user.deleteMany({ where: { id: { in: userIds } } })
    }
  })

  it('creates TRAVEL_CONFIRMED notification when flight status set to CONFIRMED', async () => {
    const admin = await createTestUser('SUPER_ADMIN')
    userIds.push(admin.id)
    const { program, user, flightDetail } = await setupFlightScenario('confirm')
    programIds.push(program.id)
    userIds.push(user.id)

    const caller = createCaller(logisticsRouter, {
      id: admin.id,
      email: admin.email,
      role: 'SUPER_ADMIN',
    })

    await caller.setFlightStatus({ flightDetailId: flightDetail.id, status: 'CONFIRMED' })

    const notification = await prisma.inAppNotification.findFirst({
      where: { userId: user.id, type: 'TRAVEL_CONFIRMED' },
    })
    expect(notification).not.toBeNull()
    expect(notification!.type).toBe('TRAVEL_CONFIRMED')
  })

  it('does NOT create TRAVEL_CONFIRMED notification when status is set to PENDING', async () => {
    const admin = await createTestUser('SUPER_ADMIN')
    userIds.push(admin.id)
    const { program, user, flightDetail } = await setupFlightScenario('pending')
    programIds.push(program.id)
    userIds.push(user.id)

    // First set to CONFIRMED to have a baseline, then revert to PENDING
    const caller = createCaller(logisticsRouter, {
      id: admin.id,
      email: admin.email,
      role: 'SUPER_ADMIN',
    })

    // Start with CONFIRMED so we know a notification would be created
    await caller.setFlightStatus({ flightDetailId: flightDetail.id, status: 'CONFIRMED' })

    // Clear notifications for this user so we can test the PENDING case cleanly
    await prisma.inAppNotification.deleteMany({ where: { userId: user.id } })

    // Now set back to PENDING — must NOT create a new TRAVEL_CONFIRMED notification
    await caller.setFlightStatus({ flightDetailId: flightDetail.id, status: 'PENDING' })

    const notification = await prisma.inAppNotification.findFirst({
      where: { userId: user.id, type: 'TRAVEL_CONFIRMED' },
    })
    expect(notification).toBeNull()
  })
})

describe('logistics comms: visa status update notification', () => {
  const programIds: string[] = []
  const userIds: string[] = []

  afterAll(async () => {
    // Clean up InAppNotification rows first
    for (const userId of userIds) {
      await prisma.inAppNotification.deleteMany({ where: { userId } })
    }
    for (const programId of programIds) {
      await prisma.visaApplication.deleteMany({
        where: { attendingMember: { confirmation: { project: { programId } } } },
      })
      await prisma.attendingMember.deleteMany({
        where: { confirmation: { project: { programId } } },
      })
      await prisma.finalistConfirmation.deleteMany({ where: { project: { programId } } })
      await cleanupTestData(programId, [])
    }
    if (userIds.length > 0) {
      await prisma.user.deleteMany({ where: { id: { in: userIds } } })
    }
  })

  it('creates VISA_STATUS_UPDATE notification when visa status updated to GRANTED', async () => {
    const admin = await createTestUser('SUPER_ADMIN')
    userIds.push(admin.id)
    const { program, user, visaApplication } = await setupVisaScenario('granted')
    programIds.push(program.id)
    userIds.push(user.id)

    const caller = createCaller(logisticsRouter, {
      id: admin.id,
      email: admin.email,
      role: 'SUPER_ADMIN',
    })

    await caller.updateVisaApplication({ id: visaApplication.id, status: 'GRANTED' })

    const notification = await prisma.inAppNotification.findFirst({
      where: { userId: user.id, type: 'VISA_STATUS_UPDATE' },
    })
    expect(notification).not.toBeNull()
    expect(notification!.type).toBe('VISA_STATUS_UPDATE')
  })

  it('does NOT create duplicate VISA_STATUS_UPDATE when status is unchanged', async () => {
    const admin = await createTestUser('SUPER_ADMIN')
    userIds.push(admin.id)
    const { program, user, visaApplication } = await setupVisaScenario('no-dup')
    programIds.push(program.id)
    userIds.push(user.id)

    const caller = createCaller(logisticsRouter, {
      id: admin.id,
      email: admin.email,
      role: 'SUPER_ADMIN',
    })

    // First update: REQUESTED → GRANTED (creates a notification)
    await caller.updateVisaApplication({ id: visaApplication.id, status: 'GRANTED' })

    // Second update: GRANTED → GRANTED again (same status, should NOT create another)
    await caller.updateVisaApplication({ id: visaApplication.id, status: 'GRANTED' })

    const notifications = await prisma.inAppNotification.findMany({
      where: { userId: user.id, type: 'VISA_STATUS_UPDATE' },
    })
    expect(notifications).toHaveLength(1)
  })
})