$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 ($anchor in @(
  'const moduleState = ref(',
  '["loading", "empty", "success", "error"].includes(query.state)',
  'module-state--${moduleState}',
  'empty: {',
  'success: {',
  'error: {',
  'module-content-frame.png',
  'module-field-frame.png',
  '<AppLoading',
  '<AppButton',
  '<AppToast',
  '<ModulePageBackground',
  ':style="moduleAssetStyle"',
  '@use "../styles/adaptive-frame-profiles.scss" as adaptive;',
  '@include adaptive.adaptive-module-field;',
  '@include adaptive.adaptive-module-content;',
  'const moduleAssetStyle = computed(() => ({',
  '"--module-content-asset": `url(${contentAsset.value})`',
  '"--module-field-asset": `url(${fieldAsset.value})`',
  'query.state'
)) {
  if ($component -notmatch [regex]::Escape($anchor)) { throw "ModulePage is missing high-spec anchor: $anchor" }
}

foreach ($forbidden in @(
  'class="page-intro"',
  'g03-create-flow-panel.png',
  'g06-search-input-wide.png',
  'application-status-card.png',
  'background: var(--module-field-asset) center / 100% 100% no-repeat;',
  'background: var(--module-content-asset) center / 100% 100% no-repeat;',
  'height: 100%;'
)) {
  if ($component -match [regex]::Escape($forbidden)) { throw "ModulePage must not keep obsolete shared surface: $forbidden" }
}

foreach ($className in @('module-panel', 'form-row', 'list-card', 'detail-card', 'timeline-row', 'settings-row', 'status-card')) {
  foreach ($property in @('border', 'border-radius', 'box-shadow')) {
    if ($component -match "(?s)\.$className\s*\{[^}]*\b$property\s*:") {
      throw "ModulePage must not construct .$className with CSS $property"
    }
  }
}

if ($component -match '::before|::after') { throw 'ModulePage must not draw visible decorations with CSS pseudo-elements' }
if ($component -match '<image\b') { throw 'ModulePage must use approved container backgrounds instead of decorative image layers' }
if ($component -match '(?im)(?<![-\w])position\s*:') { throw 'ModulePage ordinary content must not use position declarations' }

foreach ($rule in @(
  '(?s)\.module-page\s*\{[^}]*display:\s*flex;[^}]*flex-direction:\s*column;',
  '(?s)\.module-page__header,\s*\.module-page__content,\s*\.module-page__loading\s*\{[^}]*z-index:\s*1;',
  '(?s)\.module-lead\s*\{[^}]*background:\s*url\("/static/assets/modules/genealogy/transparent/section-divider\.png"\) center / 100% auto no-repeat;',
  '(?s)\.module-lead\s*\{[^}]*display:\s*flex;[^}]*align-items:\s*center;[^}]*justify-content:\s*center;',
  '(?s)\.form-row,\s*\.settings-row\s*\{[^}]*@include\s+adaptive\.adaptive-module-field;',
  '(?s)\.list-card,\s*\.detail-card,\s*\.timeline-row,\s*\.status-card\s*\{[^}]*@include\s+adaptive\.adaptive-module-content;'
)) {
  if ($component -notmatch $rule) { throw "ModulePage document-flow background rule missing: $rule" }
}

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