param(
    [string]$Name = 'TrufFreezeCounters',
    [string]$OutputRoot = 'D:\truf\runtime\freeze-diagnostics'
)

$ErrorActionPreference = 'Stop'
throw 'Docker development copy: runtime control is disabled until container isolation is ready. See DOCKER_MIGRATION.md.'

function Start-FallbackMonitor {
    $monitor = Join-Path $PSScriptRoot 'monitor_runtime_lag.ps1'
    if (-not (Test-Path -LiteralPath $monitor)) {
        throw 'Fallback freeze monitor script is absent'
    }
    Start-Process `
        -FilePath "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe" `
        -ArgumentList @(
            '-NoProfile', '-ExecutionPolicy', 'Bypass', '-File', $monitor,
            '-OutputPath', (Join-Path $OutputRoot 'freeze-fallback-v3.csv'),
            '-IntervalSeconds', '5'
        ) `
        -WindowStyle Hidden | Out-Null
}

if (-not (Test-Path -LiteralPath $OutputRoot)) {
    New-Item -ItemType Directory -Path $OutputRoot | Out-Null
}

function Read-CounterTable([string]$Language) {
    $values = (Get-ItemProperty -LiteralPath "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\$Language").Counter
    $result = @{}
    for ($index = 0; $index -lt $values.Count; $index += 2) {
        $result[[int]$values[$index]] = $values[$index + 1]
    }
    return $result
}

$english = Read-CounterTable '009'
$localized = Read-CounterTable '019'
$indexByEnglishName = @{}
foreach ($entry in $english.GetEnumerator()) {
    $indexByEnglishName[[string]$entry.Value] = [int]$entry.Key
}

function Counter-Path([string]$Object, [string]$Counter, [string]$Instance = '') {
    if (-not $indexByEnglishName.ContainsKey($Object) -or -not $indexByEnglishName.ContainsKey($Counter)) {
        return $null
    }
    $objectName = $localized[$indexByEnglishName[$Object]]
    $counterName = $localized[$indexByEnglishName[$Counter]]
    if (-not $objectName -or -not $counterName) {
        return $null
    }
    if ($Instance) {
        return "\$objectName($Instance)\$counterName"
    }
    return "\$objectName\$counterName"
}

$requested = @(
    @('Processor', '% Processor Time', '_Total'),
    @('System', 'Processor Queue Length', ''),
    @('System', 'Context Switches/sec', ''),
    @('System', 'Processes', ''),
    @('System', 'Threads', ''),
    @('Memory', 'Available MBytes', ''),
    @('Memory', '% Committed Bytes In Use', ''),
    @('Memory', 'Pages Input/sec', ''),
    @('Memory', 'Page Reads/sec', ''),
    @('Memory', 'Pool Nonpaged Bytes', ''),
    @('Paging File', '% Usage', '_Total'),
    @('PhysicalDisk', 'Current Disk Queue Length', '*'),
    @('PhysicalDisk', 'Avg. Disk sec/Transfer', '*'),
    @('PhysicalDisk', 'Disk Read Bytes/sec', '*'),
    @('PhysicalDisk', 'Disk Write Bytes/sec', '*'),
    @('PhysicalDisk', 'Disk Reads/sec', '*'),
    @('PhysicalDisk', 'Disk Writes/sec', '*'),
    @('Process', '% Processor Time', '*'),
    @('Process', 'Private Bytes', '*'),
    @('Process', 'Working Set', '*'),
    @('Process', 'Handle Count', '*'),
    @('Process', 'Thread Count', '*'),
    @('Process', 'IO Read Bytes/sec', '*'),
    @('Process', 'IO Write Bytes/sec', '*'),
    @('Process', 'Page Faults/sec', '*'),
    @('GPU Engine', 'Utilization Percentage', '*'),
    @('GPU Process Memory', 'Local Usage', '*'),
    @('GPU Process Memory', 'Non Local Usage', '*')
)

$counters = @(
    foreach ($definition in $requested) {
        $path = Counter-Path $definition[0] $definition[1] $definition[2]
        if ($path) { $path }
    }
)
if (-not $counters.Count) {
    throw 'No localized performance counters could be resolved'
}

& logman.exe query $Name *> $null
$exists = $LASTEXITCODE -eq 0
if (-not $exists) {
    & logman.exe create counter $Name `
        -f bincirc `
        -max 512 `
        -si 00:00:01 `
        -o (Join-Path $OutputRoot 'freeze-counters') `
        -c $counters *> $null
    if ($LASTEXITCODE -ne 0) {
        Start-FallbackMonitor
        return
    }
}

& logman.exe start $Name *> $null
if ($LASTEXITCODE -ne 0) {
    & logman.exe query $Name *> $null
    if ($LASTEXITCODE -ne 0) {
        Start-FallbackMonitor
        return
    }
}