$ErrorActionPreference = 'Stop'

function Assert-Contains {
  param([string]$Content, [string]$Expected, [string]$Message)
  if ($Content -notmatch [regex]::Escape($Expected)) { throw $Message }
}

function Assert-NoCssSurface {
  param([string]$Content, [string]$ClassName)
  foreach ($property in @('border', 'background', 'border-radius', 'box-shadow')) {
    if ($Content -match "(?s)\.$ClassName\s*\{[^}]*\b$property\s*:") {
      throw "T01 must not construct .$ClassName with CSS $property"
    }
  }
}

$root = Split-Path -Parent $PSScriptRoot
$pagePath = Join-Path $root 'pages/tree/t01-tree-overview.vue'
$t02Path = Join-Path $root 'pages/tree/t02-tree-states.vue'
$page = Get-Content -LiteralPath $pagePath -Raw -Encoding utf8
$pages = Get-Content -LiteralPath (Join-Path $root 'pages.json') -Raw -Encoding utf8
$catalog = Get-Content -LiteralPath (Join-Path $root 'data/page-catalog.js') -Raw -Encoding utf8

if (Test-Path -LiteralPath $t02Path) { throw 'T02 duplicate route file must be removed' }
if ($pages -match 'pages/tree/t02-tree-states') { throw 'T02 duplicate route must be removed from pages.json' }
if ($catalog -match 't02:') { throw 'T02 duplicate catalog entry must be removed' }
if ($page -match "@/utils/api\.js|\bappApi\b") { throw 'T01 design phase must not connect the API layer' }

foreach ($required in @(
  'const treeState = ref("loading")',
  'tree-state--tree',
  'tree-state--landscape',
  'tree-state--empty',
  'tree-state--error',
  'tree-canvas--state',
  'lineage-connector',
  'const generationRows = [',
  'v-for="row in generationRows"',
  ':style="generationRowStyle(row)"',
  'class="tree-stage"',
  'class="generation-rail"',
  'tree-scroll--lineage',
  'const generationRowStyle = (row)',
  't01-member-node-standard.png',
  't01-member-node-selected.png',
  't01-state-panel.png',
  't01-member-drawer.png',
  '/pages/tree/t03-member-profile',
  '/pages/tree/t04-add-relative',
  '/pages/tree/t06-edit-relationship',
  '/pages/tree/t07-member-directory',
  'query.genealogyId'
)) { Assert-Contains $page $required "Missing T01 contract: $required" }

foreach ($forbidden in @(
  'g03-create-flow-panel.png',
  'g06-search-input-wide.png',
  'application-status-card.png',
  'generation-band--twelve',
  'generation-band--thirteen',
  'generation-band--fourteen'
)) {
  if ($page -match [regex]::Escape($forbidden)) { throw "T01 must not keep opaque surface asset: $forbidden" }
}

foreach ($className in @('tree-canvas', 'member-node', 'member-sheet', 'tree-state-card')) {
  Assert-NoCssSurface $page $className
}

Write-Output 'T01-TREE-STATE-CONTRACT PASS'