$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
$componentPath = Join-Path $root 'components/ModulePage.vue'

if (-not (Test-Path -LiteralPath $componentPath)) {
  throw 'Missing shared module page component'
}

$component = Get-Content -LiteralPath $componentPath -Raw -Encoding utf8

foreach ($anchor in @(
  'a01-primary-button.png',
  'background-image:',
  'background-size: 100% 100%',
  '.primary-action--compact'
)) {
  if ($component -notmatch [regex]::Escape($anchor)) {
    throw "ModulePage is missing primary-action visual anchor: $anchor"
  }
}

if ($component -match '(?s)\.primary-action\s*\{[^}]*\bborder\s*:') {
  throw 'ModulePage primary actions must not redraw the final button border with CSS'
}

if ($component -match '(?s)\.primary-action\s*\{[^}]*\bbackground\s*:\s*\$brand-red') {
  throw 'ModulePage primary actions must not redraw the final button surface with a plain CSS color'
}

Write-Output 'MODULE-PAGE-VISUAL-CONTRACT PASS'