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]$ExpectedBackendImage = "rap-backend:fabric-service-channel-0.2.202",
    [string]$ResultPath = "artifacts\c18z27-service-channel-recovery-policy-smoke-result.json"
)

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

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

Push-Location $backendRoot
try {
    $unitTestOutput = & go test ./internal/modules/cluster -run "TestFabricServiceChannelRecoveryPolicyControlsPromotionAndPenalty|TestUpdateFabricServiceChannelRecoveryPolicyPersistsClusterMetadata|TestFabricServiceChannelRecoveryDemotionMarksRouteReason" 2>&1
    if ($LASTEXITCODE -ne 0) {
        $unitText = ($unitTestOutput | Out-String)
        throw "C18Z27 recovery policy backend unit tests failed:`n$unitText"
    }
} finally {
    Pop-Location
}

$policyUrl = "$ApiBaseUrl/clusters/$ClusterID/fabric/service-channels/recovery-policy"
$getUrl = "$policyUrl`?actor_user_id=$ActorUserID"
$before = Invoke-RestMethod -Method Get -Uri $getUrl
$beforePolicy = $before.fabric_service_channel_recovery_policy

$desired = @{
    actor_user_id = $ActorUserID
    hysteresis_penalty = 151
    promotion_min_samples = 65
    demotion_failure_threshold = 2
    demotion_drop_threshold = 2
    demotion_slow_threshold = 3
    demotion_rebuild_enabled = $true
    demotion_fenced_enabled = $true
}
$updated = Invoke-RestMethod -Method Put -Uri $policyUrl -ContentType "application/json" -Body ($desired | ConvertTo-Json -Depth 20)
$updatedPolicy = $updated.fabric_service_channel_recovery_policy

$restore = @{
    actor_user_id = $ActorUserID
    hysteresis_penalty = 150
    promotion_min_samples = 64
    demotion_failure_threshold = 1
    demotion_drop_threshold = 1
    demotion_slow_threshold = 1
    demotion_rebuild_enabled = $true
    demotion_fenced_enabled = $true
}
$restored = Invoke-RestMethod -Method Put -Uri $policyUrl -ContentType "application/json" -Body ($restore | ConvertTo-Json -Depth 20)
$restoredPolicy = $restored.fabric_service_channel_recovery_policy

$backendLine = (& ssh $DockerSSH "docker ps --format '{{.Names}} {{.Image}} {{.Status}}' | grep '^rap_test_backend '") | Out-String
$backendImageOK = $backendLine.Contains($ExpectedBackendImage)
$policyUpdatedOK = [int]$updatedPolicy.hysteresis_penalty -eq 151 -and
    [int]$updatedPolicy.promotion_min_samples -eq 65 -and
    [int]$updatedPolicy.demotion_failure_threshold -eq 2 -and
    [int]$updatedPolicy.demotion_slow_threshold -eq 3
$policyRestoredOK = [int]$restoredPolicy.hysteresis_penalty -eq 150 -and
    [int]$restoredPolicy.promotion_min_samples -eq 64 -and
    [int]$restoredPolicy.demotion_failure_threshold -eq 1

$result = [ordered]@{
    schema_version = "c18z27.service_channel_recovery_policy_smoke.v1"
    passed = [bool]($backendImageOK -and $policyUpdatedOK -and $policyRestoredOK)
    checks = [ordered]@{
        unit_recovery_policy_contract_passed = ($unitTestOutput -join "`n").Contains("ok")
        backend_expected_image_deployed = $backendImageOK
        recovery_policy_update_api_applied = $policyUpdatedOK
        recovery_policy_restored_defaults = $policyRestoredOK
    }
    summary = [ordered]@{
        unit_test_output = ($unitTestOutput | Out-String).Trim()
        backend_container = $backendLine.Trim()
        expected_backend_image = $ExpectedBackendImage
        before_policy = $beforePolicy
        updated_policy = $updatedPolicy
        restored_policy = $restoredPolicy
    }
}

$resolvedResultPath = Join-Path $repoRoot $ResultPath
$result | ConvertTo-Json -Depth 100 | Set-Content -Path $resolvedResultPath -Encoding UTF8

if (-not $result.passed) {
    throw "C18Z27 recovery policy smoke failed. Result: $resolvedResultPath"
}

Write-Host "C18Z27 service-channel recovery policy smoke passed. Result: $resolvedResultPath"
$result