#Requires -Version 5.1

[CmdletBinding()]
param(
    [string] $NodePath
)

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

function Resolve-NodePath {
    param([AllowEmptyString()][string] $ExplicitPath)

    if (-not [string]::IsNullOrWhiteSpace($ExplicitPath)) {
        if (-not [IO.Path]::IsPathRooted($ExplicitPath) -or
            -not (Test-Path -LiteralPath $ExplicitPath -PathType Leaf)) {
            throw 'NodePath must identify an existing absolute node executable path.'
        }

        return [IO.Path]::GetFullPath($ExplicitPath)
    }

    $command = Get-Command node -CommandType Application -ErrorAction SilentlyContinue |
        Select-Object -First 1
    if ($null -ne $command) {
        return $command.Source
    }

    $programFiles = [Environment]::GetFolderPath(
        [Environment+SpecialFolder]::ProgramFiles)
    $candidates = @(
        (Join-Path $programFiles 'Microsoft Visual Studio\18\Community\MSBuild\Microsoft\VisualStudio\NodeJs\node.exe'),
        (Join-Path $programFiles 'Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VisualStudio\NodeJs\node.exe')
    )
    foreach ($candidate in $candidates) {
        if (Test-Path -LiteralPath $candidate -PathType Leaf) {
            return [IO.Path]::GetFullPath($candidate)
        }
    }

    throw 'A Node.js executable was not found. Pass its absolute path with -NodePath.'
}

$node = Resolve-NodePath -ExplicitPath $NodePath
$repositoryRoot = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '..'))
$scripts = @(
    (Join-Path $repositoryRoot 'Web\playout-safety.js'),
    (Join-Path $repositoryRoot 'Web\app.js')
)
$test = Join-Path $repositoryRoot 'tests\Web\playout-safety.test.cjs'

foreach ($script in $scripts) {
    & $node --check $script
    if ($LASTEXITCODE -ne 0) {
        throw "JavaScript syntax validation failed with exit code $LASTEXITCODE."
    }
}

$appScript = Get-Content -LiteralPath (Join-Path $repositoryRoot 'Web\app.js') -Raw -Encoding UTF8
$mainWindowScript = Get-Content -LiteralPath (Join-Path $repositoryRoot 'MainWindow.xaml.cs') -Raw -Encoding UTF8
$sceneCatalogMatches = [regex]::Matches(
    $appScript,
    'builderKey:\s*"s[0-9]+"')
if ($sceneCatalogMatches.Count -ne 35) {
    throw "Web scene catalog must contain exactly 35 builder entries; found $($sceneCatalogMatches.Count)."
}
$selectionPresetMatches = [regex]::Matches(
    $appScript,
    '(?m)^\s+s[0-9]+:\s+\[')
if ($selectionPresetMatches.Count -ne 34 -or
    $appScript -notmatch 'Every reachable legacy builder must have a Web selection preset') {
    throw "Web scene selection presets must cover exactly 34 reachable builders; found $($selectionPresetMatches.Count)."
}
if ($appScript -notmatch 'reachableAliases\.size !== 45' -or
    $appScript -notmatch 'sceneCutAlias' -or
    $appScript -notmatch 'sceneAliases\(definition\)\.includes\(storedCode\)' -or
    $appScript -notmatch 'resolveStoredCatalogIndex') {
    throw 'Web scene selection must expose and preserve all 45 active cut aliases.'
}
if ($appScript -match 'payload\.cue' -or
    $appScript -notmatch 'payload\.playlist' -or
    $appScript -notmatch 'payload\.selectedIndex') {
    throw 'Web playout must send a PREPARE playlist snapshot and must not choose the NEXT cue.'
}
if ($appScript -notmatch 'const DEFAULT_FADE_DURATION = 6;' -or
    $appScript -notmatch 'fadeDuration: DEFAULT_FADE_DURATION') {
    throw 'Web playout default fade must match MainForm ComboDi.SelectedIndex 6.'
}
if ($appScript -notmatch 'normalizeScenePreviewFields' -or
    $appScript -notmatch 'currentPageItemCount' -or
    $appScript -notmatch 'renderSceneDataPreview') {
    throw 'Web playout must render bounded authoritative scene data and complete page state.'
}
if ($appScript -notmatch 'row-enabled' -or
    $appScript -notmatch 'item\.enabled = include\.checked' -or
    $appScript -notmatch 'isPlaylistSnapshotLocked' -or
    $appScript -notmatch 'pending: Boolean\(state\.playout\.pending\)' -or
    $appScript -notmatch 'outcomeUnknown: state\.playout\.sessionQuarantined') {
    throw 'Web playlist must expose the legacy active flag and freeze its native snapshot.'
}
if ($appScript -notmatch 'postNative\("playout-timeout-quarantine", \{ requestId, command \}\)' -or
    $appScript -notmatch 'browserCorrelationQuarantined') {
    throw 'Web response timeouts must latch the process-lifetime native quarantine.'
}
if ($mainWindowScript -notmatch 'OnNavigationStarting' -or
    $mainWindowScript -notmatch 'OnProcessFailed' -or
    $mainWindowScript -notmatch 'ReloadBrowserSafely' -or
    $mainWindowScript -notmatch 'QuarantineIfBrowserCorrelationCanBeLost' -or
    $mainWindowScript -notmatch 'Volatile\.Read\(ref _playoutCommandInFlight\)') {
    throw 'Reload, navigation, and WebView process failure must quarantine in-flight playout correlation.'
}

& $node --test $test
if ($LASTEXITCODE -ne 0) {
    throw "Web playout tests failed with exit code $LASTEXITCODE."
}

[pscustomobject][ordered]@{
    Status = 'Passed'
    SyntaxFiles = $scripts.Count
    SceneCatalogEntries = $sceneCatalogMatches.Count
    ReachableSelectionPresets = $selectionPresetMatches.Count
    TestFile = [IO.Path]::GetFileName($test)
}