param(
    [string]$ApiBaseUrl = "http://192.168.200.61:18121/api/v1",
    [string]$ClusterID = "cfc0743d-d960-49fb-9de8-96e063d5e4aa",
    [string]$ActorUserID = "f67d943f-5397-4b3a-a229-695fe67ad700",
    [string]$DockerSSH = "test-docker",
    [string]$ExpectedBackendImage = "rap-backend:fabric-service-channel-0.2.224",
    [string]$ResultPath = "artifacts\c18z42-service-channel-rebuild-correlation-snapshot-smoke-result.json"
)

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

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$repoRoot = (Resolve-Path (Join-Path $scriptDir "..\..")).ProviderPath

function Get-Prop {
    param([object]$Object, [string]$Name)
    if ($null -eq $Object) { return $null }
    $prop = $Object.PSObject.Properties[$Name]
    if ($null -eq $prop) { return $null }
    return $prop.Value
}

function Invoke-TimedApi {
    param([string]$Path, [int]$TimeoutSec = 30)
    $sw = [System.Diagnostics.Stopwatch]::StartNew()
    $body = Invoke-RestMethod -Method Get -Uri "$ApiBaseUrl$Path" -TimeoutSec $TimeoutSec
    $sw.Stop()
    [pscustomobject]@{
        body = $body
        elapsed_ms = [int]$sw.ElapsedMilliseconds
    }
}

$summaryResponse = Invoke-TimedApi -Path "/clusters/$ClusterID/fabric/service-channels/rebuild-attempts?actor_user_id=$ActorUserID&limit=1&enrichment=summary" -TimeoutSec 15
$summaryAttempts = @($summaryResponse.body.rebuild_attempts)
if ($summaryAttempts.Count -lt 1) {
    throw "C18Z42 smoke needs at least one rebuild attempt."
}

$sampleSummary = $summaryAttempts | Select-Object -First 1
$reporterNodeID = [string]$sampleSummary.reporter_node_id
$routeID = [string]$sampleSummary.route_id
$serviceClass = [string]$sampleSummary.service_class
$generation = [string]$sampleSummary.generation

$deepPath = "/clusters/$ClusterID/fabric/service-channels/rebuild-attempts?actor_user_id=$ActorUserID&reporter_node_id=$reporterNodeID&route_id=$routeID&service_class=$serviceClass&generation=$generation&limit=1&enrichment=deep"
$deepFirst = Invoke-TimedApi -Path $deepPath -TimeoutSec 30
$deepFirstAttempts = @($deepFirst.body.rebuild_attempts)
$deepFirstSample = $deepFirstAttempts | Select-Object -First 1

$deepSecond = Invoke-TimedApi -Path $deepPath -TimeoutSec 30
$deepSecondAttempts = @($deepSecond.body.rebuild_attempts)
$deepSecondSample = $deepSecondAttempts | Select-Object -First 1

$incidentsResponse = Invoke-TimedApi -Path "/clusters/$ClusterID/fabric/service-channels/rebuild-incidents?actor_user_id=$ActorUserID&limit=5" -TimeoutSec 30
$incidents = @($incidentsResponse.body.rebuild_incidents)

$summaryHasGuard = [string](Get-Prop $sampleSummary "guard_status") -ne ""
$summaryHasTimeline = $null -ne (Get-Prop $sampleSummary "timeline")
$deepHasSnapshot = [string](Get-Prop $deepSecondSample "correlation_snapshot_at") -ne ""
$deepHasGuard = [string](Get-Prop $deepSecondSample "guard_status") -ne ""
$deepHasTimeline = $null -ne (Get-Prop $deepSecondSample "timeline")

$backendLine = (& ssh $DockerSSH "docker ps --format '{{.Names}} {{.Image}} {{.Status}}' | grep '^rap_test_backend '") | Out-String

$result = [ordered]@{
    schema_version = "c18z42.service_channel_rebuild_correlation_snapshot_smoke.v1"
    cluster_id = $ClusterID
    route_id = $routeID
    reporter_node_id = $reporterNodeID
    generation = $generation
    passed = [bool](
        $backendLine.Contains($ExpectedBackendImage) -and
        -not $summaryHasGuard -and
        -not $summaryHasTimeline -and
        $deepHasSnapshot -and
        $deepHasGuard -and
        $deepHasTimeline -and
        $incidents.Count -ge 1
    )
    checks = [ordered]@{
        backend_expected_image_deployed = $backendLine.Contains($ExpectedBackendImage)
        summary_omits_guard = (-not $summaryHasGuard)
        summary_omits_timeline = (-not $summaryHasTimeline)
        deep_returns_snapshot_timestamp = $deepHasSnapshot
        deep_returns_guard = $deepHasGuard
        deep_returns_timeline = $deepHasTimeline
        incidents_returned = ($incidents.Count -ge 1)
    }
    timings_ms = [ordered]@{
        summary = $summaryResponse.elapsed_ms
        deep_first = $deepFirst.elapsed_ms
        deep_second = $deepSecond.elapsed_ms
        incidents = $incidentsResponse.elapsed_ms
    }
    summary = [ordered]@{
        backend_container = $backendLine.Trim()
        deep_first_sample = $deepFirstSample
        deep_second_sample = $deepSecondSample
        incident_count = $incidents.Count
    }
}

$resultFullPath = Join-Path $repoRoot $ResultPath
$resultDir = Split-Path -Parent $resultFullPath
if (-not (Test-Path $resultDir)) {
    New-Item -ItemType Directory -Path $resultDir | Out-Null
}
$result | ConvertTo-Json -Depth 100 | Set-Content -Path $resultFullPath -Encoding UTF8

if (-not $result.passed) {
    throw "C18Z42 service-channel rebuild correlation snapshot smoke failed. Result: $resultFullPath"
}

Write-Host "C18Z42 service-channel rebuild correlation snapshot smoke passed. Result: $resultFullPath"
$result