$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
$requiredFiles = @(
  'App.vue',
  'main.js',
  'manifest.json',
  'pages.json',
  'uni.scss',
  'styles/global.scss',
  'data/mock.js',
  'utils/config.js',
  'utils/api.js',
  'components/AppTabbar.vue',
  'components/PageHeader.vue',
  'pages/auth/a01-entry.vue',
  'pages/auth/a02-login.vue',
  'pages/genealogy/g01-my-genealogies.vue',
  'pages/genealogy/g03-create-genealogy.vue',
  'pages/genealogy/g05-genealogy-overview.vue',
  'pages/genealogy/g06-search-genealogies.vue',
  'pages/genealogy/g10-application-review.vue',
  'pages/tree/t01-tree-overview.vue',
  'pages/tree/t03-member-profile.vue',
  'pages/family/f01-family-feed.vue',
  'pages/family/f02-publish-feed.vue',
  'pages/profile/m01-profile-home.vue',
  'pages/notification/n01-message-center.vue',
  'static/icons/tab-genealogy.png',
  'static/icons/tab-family.png',
  'static/icons/tab-profile.png'
)

$missing = $requiredFiles | Where-Object { -not (Test-Path (Join-Path $root $_)) }
if ($missing) {
  throw "Missing phase-one files: $($missing -join ', ')"
}

$pages = Get-Content -Raw -Encoding UTF8 (Join-Path $root 'pages.json') | ConvertFrom-Json
$paths = @($pages.pages | ForEach-Object { $_.path })
$requiredRoutes = @(
  'pages/auth/a01-entry',
  'pages/auth/a02-login',
  'pages/genealogy/g01-my-genealogies',
  'pages/genealogy/g03-create-genealogy',
  'pages/genealogy/g05-genealogy-overview',
  'pages/genealogy/g06-search-genealogies',
  'pages/genealogy/g10-application-review',
  'pages/tree/t01-tree-overview',
  'pages/tree/t03-member-profile',
  'pages/family/f01-family-feed',
  'pages/family/f02-publish-feed',
  'pages/profile/m01-profile-home',
  'pages/notification/n01-message-center'
)

$missingRoutes = $requiredRoutes | Where-Object { $_ -notin $paths }
if ($missingRoutes) {
  throw "Missing page routes: $($missingRoutes -join ', ')"
}
if ($paths -contains 'pages/genealogy/g04-first-ancestor') {
  throw 'G04 route must be merged into G03'
}

$tokens = Get-Content -Raw -Encoding UTF8 (Join-Path $root 'uni.scss')
foreach ($token in @('$brand-red:', '$ink:', '$paper:', '$gold:')) {
  if ($tokens -notmatch [regex]::Escape($token)) {
    throw "Missing design token: $token"
  }
}

Add-Type -AssemblyName System.Drawing
foreach ($icon in @('tab-genealogy.png', 'tab-family.png', 'tab-profile.png')) {
  $bitmap = [System.Drawing.Bitmap]::new((Join-Path $root "static/icons/$icon"))
  try {
    if (-not [System.Drawing.Image]::IsAlphaPixelFormat($bitmap.PixelFormat)) {
      throw "Icon must keep an alpha channel: $icon"
    }
    if ($bitmap.GetPixel(0, 0).A -ne 0) {
      throw "Icon corner must be transparent: $icon"
    }
  } finally {
    $bitmap.Dispose()
  }
}

Write-Output 'PASS phase-one Uni-App contract'