import { describe, it, expect } from 'vitest'
import { readFileSync } from 'node:fs'
import { resolve } from 'node:path'

const eventsDir = resolve(import.meta.dirname, '../../../server/api/events/[id]')

describe('register.post.js', () => {
  const source = readFileSync(resolve(eventsDir, 'register.post.js'), 'utf-8')

  it('uses validateBody for input validation', () => {
    expect(source).toContain('validateBody(event')
  })

  it('checks for duplicate registration with case-insensitive email', () => {
    expect(source).toContain('email.toLowerCase()')
  })

  it('checks membersOnly restriction', () => {
    expect(source).toContain('membersOnly')
  })

  it('checks capacity via maxAttendees', () => {
    expect(source).toContain('maxAttendees')
  })

  it('does not let email failure block registration', () => {
    // The await call (not the import) must be wrapped in try/catch
    const emailCallIndex = source.indexOf('await sendEventRegistrationEmail')
    expect(emailCallIndex).toBeGreaterThan(-1)

    // A try block immediately precedes the email call
    const precedingSource = source.slice(0, emailCallIndex)
    const lastTryIndex = precedingSource.lastIndexOf('try')
    expect(lastTryIndex).toBeGreaterThan(-1)

    // The catch after the email call should log but not re-throw
    const afterEmail = source.slice(emailCallIndex)
    const catchBlock = afterEmail.match(/catch\s*\(\w+\)\s*\{[^}]*\}/s)
    expect(catchBlock).not.toBeNull()
    expect(catchBlock[0]).toContain('console.error')
  })
})

describe('guest-register.post.js', () => {
  const source = readFileSync(resolve(eventsDir, 'guest-register.post.js'), 'utf-8')

  it('uses validateBody for input validation', () => {
    expect(source).toContain('validateBody(event')
  })

  it('checks membersOnly restriction with 403', () => {
    expect(source).toContain('membersOnly')
    expect(source).toContain('403')
  })

  it('checks payment requirement with 402', () => {
    expect(source).toContain('paymentRequired')
    expect(source).toContain('402')
  })

  it('checks capacity via maxAttendees', () => {
    expect(source).toContain('maxAttendees')
  })

  it('does not require auth', () => {
    expect(source).not.toContain('requireAuth')
  })
})

describe('cancel-registration.post.js', () => {
  const source = readFileSync(resolve(eventsDir, 'cancel-registration.post.js'), 'utf-8')

  it('uses validateBody for input validation', () => {
    expect(source).toContain('validateBody(event')
  })

  it('finds registration by email', () => {
    expect(source).toContain('email.toLowerCase()')
  })

  it('notifies waitlist after cancellation', () => {
    expect(source).toContain('waitlist')
    expect(source).toContain('sendWaitlistNotificationEmail')
  })

  it('does not require auth', () => {
    expect(source).not.toContain('requireAuth')
  })
})