$ErrorActionPreference = 'Stop'
$htmlPath = Join-Path $PSScriptRoot '..\assets\app.js'
$html = [System.IO.File]::ReadAllText($htmlPath, [System.Text.Encoding]::UTF8)

$required = @(
  'relabelMode:',
  'relabel-box',
  'relabel-sku',
  'setRelabelMode(mode)',
  '贴箱唛',
  '贴SKU标',
  '开始作业',
  'function relabelBoxView()',
  'function relabelSkuView()',
  'window.print()',
  'handleRelabelScan()'
)

$missing = $required | Where-Object { -not $html.Contains($_) }
if ($missing) { throw "Missing relabel workflow contract: $($missing -join ', ')" }

$renderStart = $html.LastIndexOf('function relabelView()')
$renderEnd = $html.IndexOf('function relabelDetailView', $renderStart)
if ($renderStart -lt 0 -or $renderEnd -lt 0) { throw 'Current relabel list view not found' }
$render = $html.Substring($renderStart, $renderEnd - $renderStart)
if (-not $render.Contains('setRelabelMode(')) { throw 'Relabel list does not expose mode tabs' }
if (-not $render.Contains("t('relabelStart')")) { throw 'Relabel list does not use the start-work action' }

$detailView = [regex]::Match($html, '(?s)function relabelDetailView\(mode\).*?(?=function relabelBoxView)').Value
foreach ($token in @('relabel-scan','relabel-box-preview','relabel-sku-preview','printRelabelLabel')) {
  if (-not $detailView.Contains($token)) { throw "Relabel detail page is missing $token" }
}

$boxView = [regex]::Match($html, 'function relabelBoxView\(\)\{[^}]+\}').Value
if (-not $boxView.Contains("relabelDetailView('box')")) { throw 'Carton-mark page does not use the shared detail view' }

$skuView = [regex]::Match($html, 'function relabelSkuView\(\)\{[^}]+\}').Value
if (-not $skuView.Contains("relabelDetailView('sku')")) { throw 'SKU-label page does not use the shared detail view' }

Write-Output 'PASS: relabel workflow source contract'