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]$ExitNodeName = "test-2",
    [string]$EntryBaseUrl = "http://192.168.200.61:19131",
    [string]$ResultPath = "artifacts\c19h-remote-workspace-frame-guardrails-smoke-result.json"
)

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

$repoRoot = (Resolve-Path (Join-Path $PSScriptRoot "..\..")).ProviderPath
$runId = "c19h-" + (Get-Date -Format "yyyyMMdd-HHmmss")

function Invoke-Api {
    param([string]$Method, [string]$Path, [object]$Body = $null)
    $uri = "$ApiBaseUrl$Path"
    if ($null -eq $Body) {
        return Invoke-RestMethod -Method $Method -Uri $uri -TimeoutSec 30
    }
    return Invoke-RestMethod -Method $Method -Uri $uri -ContentType "application/json" -Body ($Body | ConvertTo-Json -Depth 80) -TimeoutSec 30
}

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
}

function ConvertTo-Base64UrlJson {
    param([object]$Value)
    if ($Value -is [string]) { $json = $Value } else { $json = $Value | ConvertTo-Json -Depth 80 -Compress }
    $bytes = [System.Text.Encoding]::UTF8.GetBytes($json)
    return [Convert]::ToBase64String($bytes).TrimEnd("=").Replace("+", "-").Replace("/", "_")
}

function Get-NodeByName {
    param([string]$Name)
    $nodes = (Invoke-Api -Method GET -Path "/clusters/$ClusterID/nodes?actor_user_id=$ActorUserID").nodes
    $node = @($nodes | Where-Object { $_.name -eq $Name }) | Select-Object -First 1
    if ($null -eq $node) { throw "Node '$Name' was not found in cluster $ClusterID" }
    return $node
}

function Disable-ExistingRemoteWorkspaceRoutes {
    param([string]$SourceNodeID, [string]$DestinationNodeID)
    $items = (Invoke-Api -Method GET -Path "/clusters/$ClusterID/mesh/route-intents?actor_user_id=$ActorUserID").route_intents
    foreach ($item in @($items)) {
        if ([string](Get-PropertyValue -Item $item -Name "status" -Default "") -ne "active") { continue }
        if ([string](Get-PropertyValue -Item $item -Name "service_class" -Default "") -ne "remote_workspace") { continue }
        $sourceSelector = Get-PropertyValue -Item $item -Name "source_selector" -Default $null
        $destinationSelector = Get-PropertyValue -Item $item -Name "destination_selector" -Default $null
        if ([string](Get-PropertyValue -Item $sourceSelector -Name "node_id" -Default "") -ne $SourceNodeID) { continue }
        if ([string](Get-PropertyValue -Item $destinationSelector -Name "node_id" -Default "") -ne $DestinationNodeID) { continue }
        [void](Invoke-Api -Method POST -Path "/clusters/$ClusterID/mesh/route-intents/$($item.id)/disable" -Body @{
            actor_user_id = $ActorUserID
            reason = "c19h isolate remote workspace frame guardrails smoke"
        })
    }
}

function New-RemoteWorkspaceRouteIntent {
    param([string]$SourceNodeID, [string]$DestinationNodeID)
    $expiresAt = (Get-Date).ToUniversalTime().AddMinutes(5).ToString("o")
    return Invoke-Api -Method POST -Path "/clusters/$ClusterID/mesh/route-intents" -Body @{
        actor_user_id = $ActorUserID
        source_selector = @{ node_id = $SourceNodeID }
        destination_selector = @{ node_id = $DestinationNodeID }
        service_class = "remote_workspace"
        priority = 2100000000
        policy = @{
            synthetic_enabled = $true
            route_version = "$runId-remote-workspace"
            policy_version = "$runId-remote-workspace"
            peer_directory_version = "$runId-remote-workspace"
            hops = @($SourceNodeID, $DestinationNodeID)
            allowed_channels = @("control", "interactive", "reliable", "bulk", "droppable")
            max_ttl = 8
            max_hops = 8
            expires_at = $expiresAt
            metadata = @{ smoke = "c19h_remote_workspace_frame_guardrails"; run_id = $runId }
        }
    }
}

function Invoke-GuardedFrameBatch {
    param([string]$Name, [object]$FrameBatch, [hashtable]$Headers, [string]$Url)
    try {
        $response = Invoke-WebRequest -Method POST -Uri $Url -Headers $Headers -Body ($FrameBatch | ConvertTo-Json -Depth 40 -Compress) -ContentType "application/vnd.rap.remote-workspace-frame-batch.v1+json" -TimeoutSec 30
        return [ordered]@{ name = $Name; status_code = [int]$response.StatusCode; body = $response.Content }
    } catch {
        $statusCode = $null
        if ($_.Exception.Response) { $statusCode = [int]$_.Exception.Response.StatusCode }
        $details = $_.ErrorDetails.Message
        if (-not $details) { $details = $_.Exception.Message }
        return [ordered]@{ name = $Name; status_code = $statusCode; body = $details }
    }
}

function New-FrameBatch {
    param(
        [bool]$ProbeOnly = $true,
        [string]$ServiceClass = "remote_workspace",
        [string]$ChannelClass = "interactive",
        [string]$FrameChannel = "input",
        [string]$Direction = "client_to_adapter",
        [string]$PayloadEncoding = "none"
    )
    return [ordered]@{
        schema_version = "rap.remote_workspace_frame_batch.v1"
        probe_only = $ProbeOnly
        service_class = $ServiceClass
        channel_class = $ChannelClass
        adapter_contract_id = "rap.rdp_worker.remote_workspace_adapter_contract_probe.v1"
        frames = @(@{
            channel = $FrameChannel
            direction = $Direction
            payload_encoding = $PayloadEncoding
            payload_length = 0
            droppable = $true
        })
    }
}

$entryNode = Get-NodeByName -Name $EntryNodeName
$exitNode = Get-NodeByName -Name $ExitNodeName
Disable-ExistingRemoteWorkspaceRoutes -SourceNodeID $entryNode.id -DestinationNodeID $exitNode.id
$route = (New-RemoteWorkspaceRouteIntent -SourceNodeID $entryNode.id -DestinationNodeID $exitNode.id).route_intent
$routeID = [string]$route.id

$leaseResponse = Invoke-Api -Method POST -Path "/clusters/$ClusterID/fabric/service-channels/leases" -Body @{
    actor_user_id = $ActorUserID
    organization_id = "org-home"
    user_id = "user-m"
    resource_id = "$runId-remote-workspace"
    service_class = "remote_workspace"
    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
    ttl_seconds = 120
    metadata = @{ smoke = "c19h_remote_workspace_frame_guardrails"; run_id = $runId }
}
$lease = $leaseResponse.fabric_service_channel_lease
$authorityPayload = Get-PropertyValue -Item $lease -Name "authority_payload" -Default $null
if ($authorityPayload -is [string] -and $authorityPayload.Length -gt 0) { $decodedAuthority = $authorityPayload | ConvertFrom-Json } else { $decodedAuthority = $authorityPayload }

$ingressUrl = "$EntryBaseUrl/api/v1/clusters/$ClusterID/fabric/service-channels/$($lease.channel_id)/remote-workspaces/$($lease.resource_id)/streams/interactive"
$headers = @{
    "X-RAP-Service-Channel-Token" = [string]$lease.token.token
    "X-RAP-Fabric-Channel-ID" = [string]$lease.channel_id
    "X-RAP-Service-Channel-Authority-Payload" = ConvertTo-Base64UrlJson -Value $decodedAuthority
    "X-RAP-Service-Channel-Authority-Signature" = ConvertTo-Base64UrlJson -Value (Get-PropertyValue -Item $lease -Name "authority_signature" -Default $null)
    "X-RAP-Service-Class" = "remote_workspace"
    "X-RAP-Channel-Class" = "interactive"
}

$cases = @()
$cases += Invoke-GuardedFrameBatch -Name "probe_only_false" -FrameBatch (New-FrameBatch -ProbeOnly $false) -Headers $headers -Url $ingressUrl
$cases += Invoke-GuardedFrameBatch -Name "unknown_channel" -FrameBatch (New-FrameBatch -FrameChannel "unknown") -Headers $headers -Url $ingressUrl
$cases += Invoke-GuardedFrameBatch -Name "wrong_direction" -FrameBatch (New-FrameBatch -FrameChannel "display" -Direction "client_to_adapter") -Headers $headers -Url $ingressUrl
$cases += Invoke-GuardedFrameBatch -Name "service_mismatch" -FrameBatch (New-FrameBatch -ServiceClass "vpn_packets") -Headers $headers -Url $ingressUrl
$cases += Invoke-GuardedFrameBatch -Name "channel_mismatch" -FrameBatch (New-FrameBatch -ChannelClass "reliable") -Headers $headers -Url $ingressUrl
$cases += Invoke-GuardedFrameBatch -Name "unsupported_encoding" -FrameBatch (New-FrameBatch -PayloadEncoding "raw") -Headers $headers -Url $ingressUrl

$caseChecks = [ordered]@{}
foreach ($case in $cases) {
    $caseChecks[$case.name] = ([int]$case.status_code -eq 400 -and [string]$case.body -notmatch "adapter_delivery" -and [string]$case.body -notmatch "delivered_probe_only")
}
$checks = [ordered]@{
    lease_ready = ([string]$lease.status -eq "ready")
    lease_uses_requested_route = ([string]$lease.primary_route.route_id -eq $routeID)
    all_guardrails_rejected = -not ($caseChecks.Values -contains $false)
}
foreach ($key in $caseChecks.Keys) {
    $checks["guardrail_$key"] = $caseChecks[$key]
}
$failed = @($checks.GetEnumerator() | Where-Object { -not $_.Value } | ForEach-Object { $_.Key })

$result = [ordered]@{
    schema_version = "c19h.remote_workspace_frame_guardrails_smoke.v1"
    run_id = $runId
    base_url = $ApiBaseUrl
    entry_base_url = $EntryBaseUrl
    cluster_id = $ClusterID
    entry_node = [ordered]@{ id = $entryNode.id; name = $entryNode.name }
    exit_node = [ordered]@{ id = $exitNode.id; name = $exitNode.name }
    channel_id = [string]$lease.channel_id
    route_id = $routeID
    cases = $cases
    checks = $checks
    failed_checks = $failed
    passed = ($failed.Count -eq 0)
}

$fullResultPath = Join-Path $repoRoot $ResultPath
$resultDir = Split-Path -Parent $fullResultPath
if ($resultDir) { New-Item -ItemType Directory -Force -Path $resultDir | Out-Null }
$result | ConvertTo-Json -Depth 80 | Set-Content -Encoding UTF8 -Path $fullResultPath

try {
    if ($routeID) { Invoke-Api -Method POST -Path "/clusters/$ClusterID/mesh/route-intents/$routeID/expire" -Body @{ actor_user_id = $ActorUserID } | Out-Null }
    Invoke-Api -Method POST -Path "/clusters/$ClusterID/fabric/service-channels/leases/cleanup" -Body @{ actor_user_id = $ActorUserID; limit = 100 } | Out-Null
} catch {
    Write-Warning "cleanup failed after c19h smoke: $($_.Exception.Message)"
}

if (-not $result.passed) {
    throw "C19H remote workspace frame guardrails smoke failed. Result: $fullResultPath Failed: $($failed -join ', ')"
}

Write-Host "C19H remote workspace frame guardrails smoke passed. Result: $fullResultPath"
$result