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]$ExitNodeName = "test-2",
    [string]$DockerSSH = "test-docker",
    [string]$ExpectedBackendImage = "rap-backend:fabric-service-channel-0.2.234",
    [string]$ResultPath = "artifacts\c18z51-service-channel-lease-maintenance-smoke-result.json"
)

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

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

function Invoke-ApiGet {
    param([string]$Path, [int]$TimeoutSec = 30)
    Invoke-RestMethod -Method Get -Uri "$ApiBaseUrl$Path" -TimeoutSec $TimeoutSec
}

$nodes = @((Invoke-ApiGet -Path "/clusters/$ClusterID/nodes?actor_user_id=$ActorUserID").nodes)
$entryNode = $nodes | Where-Object { $_.name -eq $EntryNodeName } | Select-Object -First 1
$exitNode = $nodes | Where-Object { $_.name -eq $ExitNodeName } | Select-Object -First 1
if ($null -eq $entryNode -or $null -eq $exitNode) {
    throw "Entry or exit node not found: $EntryNodeName / $ExitNodeName"
}

$resourceID = "c18z51-vpn-smoke"
$leaseBody = @{
    actor_user_id = $ActorUserID
    organization_id = "smoke-org"
    user_id = "smoke-user"
    resource_id = $resourceID
    service_class = "vpn_packets"
    entry_node_ids = @([string]$entryNode.id)
    exit_node_ids = @([string]$exitNode.id)
    preferred_entry_node_id = [string]$entryNode.id
    preferred_exit_node_id = [string]$exitNode.id
    allowed_channels = @("vpn_packet", "fabric_control")
    ttl_seconds = 1
} | ConvertTo-Json -Depth 20
$lease = (Invoke-RestMethod -Method Post -Uri "$ApiBaseUrl/clusters/$ClusterID/fabric/service-channels/leases" -ContentType "application/json" -Body $leaseBody -TimeoutSec 30).fabric_service_channel_lease
Start-Sleep -Seconds 2

$before = (Invoke-ApiGet -Path "/clusters/$ClusterID/fabric/service-channels/leases?actor_user_id=$ActorUserID&include_expired=true&limit=50").fabric_service_channel_lease_maintenance
$cleanupBody = @{ actor_user_id = $ActorUserID; limit = 50 } | ConvertTo-Json -Depth 5
$cleanup = (Invoke-RestMethod -Method Post -Uri "$ApiBaseUrl/clusters/$ClusterID/fabric/service-channels/leases/cleanup" -ContentType "application/json" -Body $cleanupBody -TimeoutSec 30).fabric_service_channel_lease_maintenance
$after = (Invoke-ApiGet -Path "/clusters/$ClusterID/fabric/service-channels/leases?actor_user_id=$ActorUserID&include_expired=true&limit=50").fabric_service_channel_lease_maintenance
$backendLine = (& ssh $DockerSSH "docker ps --format '{{.Names}} {{.Image}} {{.Status}}' | grep '^rap_test_backend '") | Out-String

$beforeLeases = @()
if ($before.PSObject.Properties.Name -contains "leases") {
    $beforeLeases = @($before.leases)
}
$afterLeases = @()
if ($after.PSObject.Properties.Name -contains "leases") {
    $afterLeases = @($after.leases)
}
$expiredBefore = @($beforeLeases | Where-Object { $_.channel_id -eq $lease.channel_id -and $_.expired })
$presentAfter = @($afterLeases | Where-Object { $_.channel_id -eq $lease.channel_id })

$result = [ordered]@{
    schema_version = "c18z51.service_channel_lease_maintenance_smoke.v1"
    cluster_id = $ClusterID
    channel_id = [string]$lease.channel_id
    passed = [bool](
        $backendLine.Contains($ExpectedBackendImage) -and
        $expiredBefore.Count -eq 1 -and
        [int]$cleanup.deleted_expired_count -ge 1 -and
        $presentAfter.Count -eq 0
    )
    checks = [ordered]@{
        backend_expected_image_deployed = $backendLine.Contains($ExpectedBackendImage)
        expired_lease_visible_before_cleanup = ($expiredBefore.Count -eq 1)
        cleanup_deleted_expired = ([int]$cleanup.deleted_expired_count -ge 1)
        expired_lease_removed_after_cleanup = ($presentAfter.Count -eq 0)
    }
    summary = [ordered]@{
        backend_container = $backendLine.Trim()
        before_status = [string]$before.status
        before_active = [int]$before.active_count
        before_expired = [int]$before.expired_count
        cleanup_deleted = [int]$cleanup.deleted_expired_count
        after_active = [int]$after.active_count
        after_expired = [int]$after.expired_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 "C18Z51 service-channel lease maintenance smoke failed. Result: $resultFullPath"
}

Write-Host "C18Z51 service-channel lease maintenance smoke passed. Result: $resultFullPath"
$result