$ErrorActionPreference = 'Stop'

function Read-Utf8([string]$Path) {
  [System.IO.File]::ReadAllText(
    (Join-Path (Join-Path $PSScriptRoot '..') $Path),
    [System.Text.Encoding]::UTF8
  )
}

function Assert-Contains {
  param([string]$Content, [string]$Expected, [string]$Message)
  if (-not $Content.Contains($Expected)) { throw $Message }
}

function Decode-Utf8Base64([string]$Value) {
  [System.Text.Encoding]::UTF8.GetString([Convert]::FromBase64String($Value))
}

$catalog = Read-Utf8 'data/page-catalog.js'
$module = Read-Utf8 'components/ModulePage.vue'

foreach ($expected in @(
  'states: {',
  "eyebrow: '$(Decode-Utf8Base64 '6LCx5paH5bey5aSx5pWI')'",
  "title: '$(Decode-Utf8Base64 '6L+Z56+H6LCx5paH5bey5peg5rOV5p+l55yL')'",
  "copy: '$(Decode-Utf8Base64 '5YaF5a655Y+v6IO95bey6KKr5L2c6ICF5Yig6Zmk5oiW5Y+W5raI5YWs5byA77yM6K+36L+U5Zue6LCx5paH5YiX6KGo5p+l55yL5YW25LuW5YaF5a6544CC')'",
  "action: '$(Decode-Utf8Base64 '6L+U5Zue6LCx5paH5YiX6KGo')'",
  "actionMode: 'back'"
)) {
  Assert-Contains $catalog $expected "F05 expired-state catalog contract missing: $expected"
}

foreach ($expected in @(
  'page.value.states?.[moduleState.value]',
  '@click="handleStateAction"',
  'const handleStateAction = () => {',
  'stateCopy.value.actionMode === "back"',
  'uni.navigateBack()'
)) {
  Assert-Contains $module $expected "ModulePage state override contract missing: $expected"
}

Write-Output 'F05-EXPIRED-STATE-CONTRACT PASS'