[CmdletBinding()]
param(
    [string]$ConfigPath = '',
    [string]$ModeId = 'baby_nap',
    [int]$TimeoutSeconds = 30
)

$ErrorActionPreference = 'Stop'
$projectRoot = (Resolve-Path (Join-Path $PSScriptRoot '..')).Path
if (-not $ConfigPath) { $ConfigPath = Join-Path $projectRoot 'config\migration.psd1' }
if (-not [System.IO.Path]::IsPathRooted($ConfigPath)) {
    $ConfigPath = Join-Path $projectRoot $ConfigPath
}
$config = Import-PowerShellDataFile -LiteralPath $ConfigPath
if (([string]$config.ExecutionTarget).Trim().ToLowerInvariant() -ne 'dry_run') {
    throw 'Safety interlock: this smoke test requires ExecutionTarget=dry_run.'
}
$tokenPath = [string]$config.TokenFile
if (-not [System.IO.Path]::IsPathRooted($tokenPath)) {
    $tokenPath = Join-Path $projectRoot $tokenPath
}
$token = (Get-Content -LiteralPath $tokenPath -Raw).Trim()
$baseUrl = ([string]$config.ServerAUrl).TrimEnd('/')
$vehicleId = ([string]$config.VehicleId).Trim()
$headers = @{
    Authorization = "Bearer $token"
    'Content-Type' = 'application/json; charset=utf-8'
    'Idempotency-Key' = "server-b-smoke-$([guid]::NewGuid().ToString('N'))"
}
$payload = @{
    mode_id = $ModeId
    execution_target = 'dry_run'
    source = 'android'
    source_device_id = 'n7-server-b-smoke'
} | ConvertTo-Json
$accepted = Invoke-RestMethod `
    -Uri "$baseUrl/api/v1/vehicles/$vehicleId/mode-executions" `
    -Method Post -Headers $headers -Body $payload -TimeoutSec 10
$deadline = (Get-Date).AddSeconds($TimeoutSeconds)
$terminal = $accepted
do {
    if ($terminal.status -in @(
        'succeeded', 'partially_succeeded', 'failed', 'cancelled', 'timed_out'
    )) { break }
    Start-Sleep -Milliseconds 500
    $terminal = Invoke-RestMethod `
        -Uri "$baseUrl/api/v1/mode-executions/$($accepted.execution_id)" `
        -Headers @{ Authorization = "Bearer $token" } -TimeoutSec 10
} while ((Get-Date) -lt $deadline)
$token = $null
if ($terminal.execution_target -ne 'dry_run') {
    throw "Safety failure: server used $($terminal.execution_target)."
}
if ($terminal.status -ne 'succeeded') {
    throw "Dry-run smoke test failed: $($terminal.status) $($terminal.message)"
}
[pscustomobject]@{
    Passed = $true
    CanExecuted = $false
    ExecutionTarget = $terminal.execution_target
    ExecutionId = $terminal.execution_id
    ModeId = $terminal.mode_id
    Status = $terminal.status
}