import { readFileSync } from 'node:fs'
import { fileURLToPath } from 'node:url'
import { dirname, resolve } from 'node:path'

const root = resolve(dirname(fileURLToPath(import.meta.url)), '..')
const srcRoot = resolve(root, 'src')
const failures = []

const expectIncludes = (content, expected, label) => {
  if (!content.includes(expected)) failures.push(`${label} is missing: ${expected}`)
}

const expectExcludes = (content, unexpected, label) => {
  if (content.includes(unexpected)) failures.push(`${label} should not contain: ${unexpected}`)
}

const courseApi = readFileSync(resolve(srcRoot, 'modules/comprehensive/api/course.js'), 'utf8')
const bookingApi = readFileSync(resolve(srcRoot, 'modules/comprehensive/api/booking.js'), 'utf8')
const comprehensiveHome = readFileSync(resolve(srcRoot, 'pages/comprehensive/home/index.vue'), 'utf8')
const comprehensiveContentApi = readFileSync(resolve(srcRoot, 'modules/comprehensive/api/content.js'), 'utf8')
const iceHome = readFileSync(resolve(srcRoot, 'pages/ice/home/index.vue'), 'utf8')
const iceHomeApi = readFileSync(resolve(srcRoot, 'modules/ice/api/home.js'), 'utf8')

expectIncludes(courseApi, "url: '/api/sessions'", 'session list endpoint')
expectIncludes(courseApi, 'url: `/api/sessions/${id}`', 'session detail endpoint')
expectIncludes(courseApi, 'data: { session_id: sessionId }', 'booking payload')
expectExcludes(courseApi, "url: '/api/courses'", 'legacy course endpoint')
expectIncludes(bookingApi, 'session_id: backendBooking.session_id', 'booking session id')
expectIncludes(bookingApi, 'session: toBookingSession(backendBooking.session)', 'booking session mapper')
expectExcludes(bookingApi, 'course: toBookingCourse(backendBooking.course)', 'legacy booking course')

expectExcludes(comprehensiveHome, '近期课程', 'comprehensive recent courses section')
expectExcludes(comprehensiveHome, 'upcomingCourses', 'comprehensive recent course state')
expectExcludes(comprehensiveContentApi, 'upcoming_courses', 'legacy comprehensive home mapping')
expectExcludes(comprehensiveContentApi, 'upcoming_sessions', 'unused comprehensive home mapping')
expectExcludes(iceHome, '近期课程', 'ice recent courses section')
expectExcludes(iceHome, 'upcomingCourses', 'ice recent course state')
expectExcludes(iceHomeApi, 'course_limit', 'ice recent course request')
expectExcludes(iceHomeApi, 'upcoming_courses', 'ice recent course mapping')

if (failures.length) {
  console.error(`Comprehensive session contract verification failed with ${failures.length} issue(s):`)
  for (const failure of failures) console.error(`- ${failure}`)
  process.exit(1)
}

console.log('Comprehensive session contract verification passed.')