$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
$manifestRelativePath = 'docs/design/assets/a01-vnext/source/a01-psd-manifest.json'

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

$requiredFiles = @(
  $manifestRelativePath,
  'scripts/build-a01-layered-psd.ps1',
  'scripts/export-a01-layered-assets.ps1',
  'scripts/photoshop/a01-build-layered-psd.jsx',
  'scripts/photoshop/a01-export-layered-assets.jsx',
  'scripts/photoshop/a01-compose-page-preview.jsx'
)

foreach ($relativePath in $requiredFiles) {
  $absolutePath = Join-Path $root $relativePath
  if (-not (Test-Path -LiteralPath $absolutePath -PathType Leaf)) {
    throw "Missing layered PSD contract file: $relativePath"
  }
}

$manifestPath = Join-Path $root $manifestRelativePath
$manifest = Get-Content -LiteralPath $manifestPath -Raw -Encoding utf8 | ConvertFrom-Json

if ($manifest.schemaVersion -ne 1) {
  throw "Expected PSD manifest schemaVersion 1, found $($manifest.schemaVersion)."
}
if ($manifest.canvas.width -ne 1236 -or $manifest.canvas.height -ne 2745) {
  throw 'PSD canvas must be 1236x2745.'
}
if ($manifest.canvas.logicalWidth -ne 412 -or $manifest.canvas.logicalHeight -ne 915 -or $manifest.canvas.scale -ne 3) {
  throw 'PSD logical canvas must be 412x915 at scale 3.'
}

$requiredGroups = @(
  'MDAt5Y+C6ICD',
  'MTAt6IOM5pmv',
  'MjAt5Y236L20',
  'MzAt5ZOB54mM5LiO5qCH6aKY6KOF6aWw',
  'NDAt5YWs5YWx5o6n5Lu255qu6IKk',
  'NTAt5a+G56CB55m75b2V',
  'NjAt6aqM6K+B56CB55m75b2V',
  'NzAt5YaF5a655LiO5qCH5rOo'
) | ForEach-Object { ConvertFrom-Utf8Base64 $_ }
foreach ($groupName in $requiredGroups) {
  if ($manifest.groups.name -notcontains $groupName) {
    throw "Missing PSD group: $groupName"
  }
}

foreach ($stateName in @('password-hidden', 'password-visible', 'sms-default', 'sms-countdown')) {
  if ($manifest.states.name -notcontains $stateName) {
    throw "Missing PSD state: $stateName"
  }
}

$buildWrapper = Get-Content -LiteralPath (Join-Path $root 'scripts/build-a01-layered-psd.ps1') -Raw -Encoding utf8
$exportWrapper = Get-Content -LiteralPath (Join-Path $root 'scripts/export-a01-layered-assets.ps1') -Raw -Encoding utf8
$buildJsx = Get-Content -LiteralPath (Join-Path $root 'scripts/photoshop/a01-build-layered-psd.jsx') -Raw -Encoding utf8
$exportJsx = Get-Content -LiteralPath (Join-Path $root 'scripts/photoshop/a01-export-layered-assets.jsx') -Raw -Encoding utf8
$composeJsx = Get-Content -LiteralPath (Join-Path $root 'scripts/photoshop/a01-compose-page-preview.jsx') -Raw -Encoding utf8

foreach ($wrapper in @($buildWrapper, $exportWrapper)) {
  foreach ($variableName in @('JIAPU_A01_ROOT', 'JIAPU_A01_MANIFEST', 'JIAPU_A01_PSD')) {
    if ($wrapper -notmatch [regex]::Escape("var $variableName =")) {
      throw "Photoshop wrapper must inject the JSX variable directly: $variableName"
    }
  }
}
foreach ($jsx in @($buildJsx, $exportJsx)) {
  if ($jsx -match [regex]::Escape('$.getenv(')) {
    throw 'Photoshop JSX must not depend on environment variables from an already-running process.'
  }
}
if ($composeJsx -notmatch [regex]::Escape('new Folder(JIAPU_A01_ROOT)') -or
    $composeJsx -notmatch [regex]::Escape('new Folder(JIAPU_A01_OUTPUT_DIR)')) {
  throw 'Photoshop preview composer must construct Folder objects explicitly.'
}
if ($composeJsx -match [regex]::Escape("var password = app.open(File(OUTPUT.fsName + '/A01-page-password-v1-1236x2745.png'))")) {
  throw 'Contact-sheet composition must not pre-open a source that placeImage opens itself.'
}

Write-Output 'A01-LAYERED-PSD-CONTRACT PASS'