param(
    [string]$ScriptPath = "scripts/open-offline-real-client-window.ps1"
)

$ErrorActionPreference = "Stop"
$repo = Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")
$target = if ([System.IO.Path]::IsPathRooted($ScriptPath)) {
    $ScriptPath
}
else {
    Join-Path $repo $ScriptPath
}

if (-not (Test-Path -LiteralPath $target)) {
    throw "script not found: $target"
}

$text = Get-Content -LiteralPath $target -Raw

$requiredPatterns = @(
    @{ Name = "WatchSeconds parameter"; Pattern = '\[int\]\$WatchSeconds' },
    @{ Name = "PollIntervalMs parameter"; Pattern = '\[int\]\$PollIntervalMs' },
    @{ Name = "watch loop output"; Pattern = 'watch_iteration_count' },
    @{ Name = "relaunch counter output"; Pattern = 'relaunch_count' },
    @{ Name = "move repair counter output"; Pattern = 'repair_count' },
    @{ Name = "closed window recovery"; Pattern = 'Relaunch-OfflineClient' },
    @{ Name = "moved window recovery"; Pattern = 'Repair-ClientWindowPlacement' }
)

$missing = @()
foreach ($item in $requiredPatterns) {
    if ($text -notmatch $item.Pattern) {
        $missing += $item.Name
    }
}

if ($missing.Count -gt 0) {
    throw "watchdog contract missing: $($missing -join ', ')"
}

[pscustomobject]@{
    ok = $true
    script = $target
    checked = $requiredPatterns.Count
} | ConvertTo-Json -Compress