param(
    [string]$ApiBaseUrl = "http://192.168.200.61:18121/api/v1",
    [string]$ClusterID = "cfc0743d-d960-49fb-9de8-96e063d5e4aa",
    [string]$ActorUserID = "f67d943f-5397-4b3a-a229-695fe67ad700",
    [string]$EntryNodeName = "test-1",
    [string]$ResultPath = "artifacts\c18z71-service-channel-adaptive-policy-smoke-result.json"
)

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

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$repoRoot = (Resolve-Path (Join-Path $scriptDir "..\..")).ProviderPath
$c18z67 = Join-Path $scriptDir "c18z67-service-channel-concurrent-qos-live-smoke.ps1"

function Invoke-Api {
    param(
        [string]$Method,
        [string]$Path,
        [object]$Body = $null
    )
    $params = @{
        Method = $Method
        Uri = "$ApiBaseUrl$Path"
        TimeoutSec = 30
    }
    if ($null -ne $Body) {
        $params.ContentType = "application/json"
        $params.Body = ($Body | ConvertTo-Json -Depth 30)
    }
    return Invoke-RestMethod @params
}

function Get-PropertyValue {
    param([object]$Item, [string]$Name, [object]$Default = $null)
    if ($null -eq $Item) { return $Default }
    $property = $Item.PSObject.Properties[$Name]
    if ($null -eq $property) { return $Default }
    return $property.Value
}

$policyBody = @{
    actor_user_id = $ActorUserID
    max_parallel_window = 6
    bulk_pressure_channel_threshold = 8
    queue_pressure_high_watermark = 8
    queue_pressure_max_in_flight = 8
    class_windows = @{
        control = 6
        interactive = 6
        reliable = 4
        bulk = 2
        droppable = 1
    }
}
$updatedPolicy = (Invoke-Api -Method PUT -Path "/clusters/$ClusterID/fabric/service-channels/adaptive-policy" -Body $policyBody).fabric_service_channel_adaptive_policy
$expectedFingerprint = [string]$updatedPolicy.fingerprint

& powershell -NoProfile -ExecutionPolicy Bypass -File $c18z67 | Out-Host

$nodes = (Invoke-Api -Method GET -Path "/clusters/$ClusterID/nodes?actor_user_id=$ActorUserID").nodes
$entryNode = @($nodes | Where-Object { $_.name -eq $EntryNodeName }) | Select-Object -First 1
if ($null -eq $entryNode) {
    throw "entry node '$EntryNodeName' not found"
}

$flowScheduler = $null
for ($i = 0; $i -lt 12; $i++) {
    Start-Sleep -Seconds 5
    $heartbeats = (Invoke-Api -Method GET -Path "/clusters/$ClusterID/nodes/$($entryNode.id)/heartbeats?actor_user_id=$ActorUserID&limit=5").heartbeats
    foreach ($heartbeat in @($heartbeats)) {
        $runtimeReport = Get-PropertyValue -Item (Get-PropertyValue -Item $heartbeat -Name "metadata" -Default $null) -Name "fabric_service_channel_runtime_report" -Default $null
        $ingress = Get-PropertyValue -Item $runtimeReport -Name "ingress" -Default $null
        $candidate = Get-PropertyValue -Item $ingress -Name "flow_scheduler" -Default $null
        if ($null -eq $candidate) { continue }
        if ([string](Get-PropertyValue -Item $candidate -Name "adaptive_policy_fingerprint" -Default "") -eq $expectedFingerprint) {
            $flowScheduler = $candidate
            break
        }
    }
    if ($null -ne $flowScheduler) { break }
}
if ($null -eq $flowScheduler) {
    throw "entry node did not report adaptive policy fingerprint '$expectedFingerprint'"
}

$windows = Get-PropertyValue -Item $flowScheduler -Name "recommended_parallel_windows" -Default $null
$checks = [ordered]@{
    policy_fingerprint_persisted = ($expectedFingerprint.Length -gt 0)
    node_reported_policy_fingerprint = ([string](Get-PropertyValue -Item $flowScheduler -Name "adaptive_policy_fingerprint" -Default "") -eq $expectedFingerprint)
    adaptive_backpressure_active = [bool](Get-PropertyValue -Item $flowScheduler -Name "adaptive_backpressure_active" -Default $false)
    bulk_window_uses_policy = ([int](Get-PropertyValue -Item $windows -Name "bulk" -Default 0) -eq 2)
    droppable_window_uses_policy = ([int](Get-PropertyValue -Item $windows -Name "droppable" -Default 0) -eq 1)
    reliable_window_uses_policy = ([int](Get-PropertyValue -Item $windows -Name "reliable" -Default 0) -le 4)
    interactive_window_uses_policy_ceiling = ([int](Get-PropertyValue -Item $windows -Name "interactive" -Default 0) -eq 6)
    control_window_uses_policy_ceiling = ([int](Get-PropertyValue -Item $windows -Name "control" -Default 0) -eq 6)
}
$failed = @($checks.GetEnumerator() | Where-Object { -not $_.Value } | ForEach-Object { $_.Key })

$result = [ordered]@{
    schema_version = "c18z71.service_channel_adaptive_policy_smoke.v1"
    run_id = "c18z71-" + (Get-Date -Format "yyyyMMdd-HHmmss")
    cluster_id = $ClusterID
    entry_node_id = $entryNode.id
    entry_node_name = $entryNode.name
    passed = ($failed.Count -eq 0)
    checks = $checks
    failed_checks = $failed
    summary = [ordered]@{
        adaptive_policy = $updatedPolicy
        flow_scheduler = $flowScheduler
    }
}

$target = Join-Path $repoRoot $ResultPath
$result | ConvertTo-Json -Depth 50 | Set-Content -Path $target -Encoding UTF8

try {
    Invoke-Api -Method PUT -Path "/clusters/$ClusterID/fabric/service-channels/adaptive-policy" -Body @{
        actor_user_id = $ActorUserID
        max_parallel_window = 4
        bulk_pressure_channel_threshold = 16
        queue_pressure_high_watermark = 16
        queue_pressure_max_in_flight = 16
        class_windows = @{
            control = 4
            interactive = 4
            reliable = 3
            bulk = 1
            droppable = 1
        }
    } | Out-Null
} catch {
    Write-Warning "failed to restore default adaptive policy after smoke: $($_.Exception.Message)"
}

if (-not $result.passed) {
    throw "C18Z71 adaptive policy smoke failed: $($failed -join ', ')"
}

Write-Host "C18Z71 service-channel adaptive policy smoke passed. Result: $target"
$result