$ErrorActionPreference = 'Stop'

$root = Split-Path -Parent $PSScriptRoot
$errors = [System.Collections.Generic.List[string]]::new()
$pageCommentPrefix = [Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('PCEtLSDpobXpnaLnvJblj7fvvJo='))

$pages = Get-Content -Raw -Encoding UTF8 (Join-Path $root 'pages.json') | ConvertFrom-Json
$registeredPaths = @($pages.pages | ForEach-Object { $_.path })

function Test-ExpectedPage {
  param(
    [string]$ExpectedPath,
    [string]$PageId
  )

  $pageFile = Join-Path $root ($expectedPath + '.vue')
  if ($registeredPaths -notcontains $expectedPath) {
    $errors.Add("Missing final route: $expectedPath")
  }
  if (-not (Test-Path -LiteralPath $pageFile)) {
    $errors.Add("Missing final page file: $($expectedPath).vue")
    return
  }

  $content = Get-Content -Raw -Encoding UTF8 $pageFile
  if (-not $content.StartsWith($pageCommentPrefix + $pageId)) {
    $errors.Add("Missing Chinese page header: $($expectedPath).vue")
  }
}

function Test-AssetDirectory {
  param([string]$AssetDirectory)

  if (-not (Test-Path -LiteralPath (Join-Path $root $assetDirectory))) {
    $errors.Add("Missing foundation asset directory: $assetDirectory")
  }
}

# P-00 final routes: each file name identifies the page and its design ID.
Test-ExpectedPage -ExpectedPath 'pages/auth/a01-entry' -PageId 'A-01'
Test-ExpectedPage -ExpectedPath 'pages/auth/a02-login' -PageId 'A-02'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g01-my-genealogies' -PageId 'G-01'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g03-create-genealogy' -PageId 'G-03'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g04-first-ancestor' -PageId 'G-04'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g05-genealogy-overview' -PageId 'G-05'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g06-search-genealogies' -PageId 'G-06'
Test-ExpectedPage -ExpectedPath 'pages/genealogy/g10-application-review' -PageId 'G-10'
Test-ExpectedPage -ExpectedPath 'pages/tree/t01-tree-overview' -PageId 'T-01'
Test-ExpectedPage -ExpectedPath 'pages/tree/t03-member-profile' -PageId 'T-03'
Test-ExpectedPage -ExpectedPath 'pages/family/f01-family-feed' -PageId 'F-01'
Test-ExpectedPage -ExpectedPath 'pages/family/f02-publish-feed' -PageId 'F-02'
Test-ExpectedPage -ExpectedPath 'pages/skeleton/content-list-skeleton' -PageId 'S-01'
Test-ExpectedPage -ExpectedPath 'pages/notification/n01-message-center' -PageId 'N-01'
Test-ExpectedPage -ExpectedPath 'pages/profile/m01-profile-home' -PageId 'M-01'

# Both asset directories are required so opaque bases and transparent overlays stay separate.
Test-AssetDirectory -AssetDirectory 'static/assets/foundation/opaque'
Test-AssetDirectory -AssetDirectory 'static/assets/foundation/transparent'

if ($errors.Count -gt 0) {
  throw "P-00 foundation structure audit failed:`n$($errors -join "`n")"
}

Write-Output 'PASS foundation structure audit'