$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
$component = Get-Content -LiteralPath (Join-Path $root 'components/AppLoading.vue') -Raw -Encoding utf8

function Assert-Match {
  param([string]$Content, [string]$Pattern, [string]$Message)
  if ($Content -notmatch $Pattern) { throw $Message }
}

Assert-Match -Content $component -Pattern ':class="`app-loading--\$\{variant\}`"' -Message 'AppLoading must expose page and section modifier classes'
Assert-Match -Content $component -Pattern 'variant:\s*\{\s*type:\s*String,\s*default:\s*["'']page["''],\s*validator:' -Message 'AppLoading must own a validated page/section variant prop'
Assert-Match -Content $component -Pattern 'description:\s*\{\s*type:\s*String,\s*default:\s*["'']["'']\s*\}' -Message 'AppLoading must expose an optional description prop'
Assert-Match -Content $component -Pattern 'v-if="description" class="app-loading__description"' -Message 'AppLoading must render its optional description'
if ($component -match '(?s)\.app-loading\s*\{[^}]*position\s*:') { throw 'AppLoading ordinary content must remain in document flow' }
Assert-Match -Content $component -Pattern 'class="app-loading__seal"\s+src="/static/assets/foundation/transparent/brand-seal\.png"' -Message 'AppLoading must render the approved real red-gold seal asset'
Assert-Match -Content $component -Pattern 'class="app-loading__knot"\s+src="/static/assets/foundation/transparent/auth-divider-knot\.png"' -Message 'AppLoading must render the approved real gold knot asset'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--page\s*\{[^}]*min-height:\s*320rpx;' -Message 'AppLoading page variant must use the approved minimum height'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--page\s+\.app-loading__seal\s*\{[^}]*width:\s*132rpx;[^}]*height:\s*136rpx;' -Message 'AppLoading page seal must use the approved size'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--page\s+\.app-loading__copy\s*\{[^}]*font-size:\s*30rpx;' -Message 'AppLoading page copy must use the approved size'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--page\s+\.app-loading__description\s*\{[^}]*font-size:\s*24rpx;' -Message 'AppLoading page description must use the approved size'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--section\s*\{[^}]*min-height:\s*180rpx;' -Message 'AppLoading section variant must use the approved minimum height'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--section\s+\.app-loading__seal\s*\{[^}]*width:\s*88rpx;[^}]*height:\s*90rpx;' -Message 'AppLoading section seal must use the approved size'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--section\s+\.app-loading__copy\s*\{[^}]*font-size:\s*24rpx;' -Message 'AppLoading section copy must use the approved size'
Assert-Match -Content $component -Pattern '(?s)\.app-loading--section\s+\.app-loading__description\s*\{[^}]*font-size:\s*22rpx;' -Message 'AppLoading section description must use the approved size'
Assert-Match -Content $component -Pattern 'app-loading-seal-breathe\s+1\.6s' -Message 'AppLoading seal must use the approved restrained breathing rhythm'
Assert-Match -Content $component -Pattern '@media\s*\(prefers-reduced-motion:\s*reduce\)' -Message 'AppLoading must respect reduced-motion preferences'
Assert-Match -Content $component -Pattern '(?s)@media\s*\(prefers-reduced-motion:\s*reduce\).*?\.app-loading__seal\s*\{[^}]*animation:\s*none;[^}]*transform:\s*none;' -Message 'Reduced-motion seal must stop animation and transforms'
Assert-Match -Content $component -Pattern '(?s)@media\s*\(prefers-reduced-motion:\s*reduce\).*?\.app-loading__knot\s*\{[^}]*animation:\s*none;[^}]*transform:\s*none;' -Message 'Reduced-motion knot must stop animation and transforms'

if ($component -match 'app-loading__mark|border:\s*4rpx\s+double') { throw 'AppLoading must not retain the legacy CSS box mark' }

Write-Output 'APP-LOADING-CONTRACT PASS'