# LaDolce Print Agent
# Runs on the office PC (as a scheduled task, at startup, as SYSTEM).
# Long-polls https://print.ladolcecorp.com/agent/ for queued jobs, prints each
# PDF to the local printer with SumatraPDF, then reports the result.
# Only outbound HTTPS is used — no ports are opened on the office network.

$ErrorActionPreference = 'Stop'
$Home_   = 'C:\ProgramData\LaDolcePrint'
$Config  = Get-Content (Join-Path $Home_ 'config.json') -Raw | ConvertFrom-Json
$LogFile = Join-Path $Home_ 'agent.log'
$Sumatra = Join-Path $Home_ 'SumatraPDF.exe'
$Headers = @{ Authorization = "Bearer $($Config.token)" }
$Server  = $Config.server.TrimEnd('/')

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

function Write-Log([string]$Message) {
    if ((Test-Path $LogFile) -and (Get-Item $LogFile).Length -gt 1MB) {
        Move-Item $LogFile "$LogFile.1" -Force
    }
    "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss')  $Message" | Add-Content $LogFile
}

function Send-Result([string]$Id, [bool]$Ok, [string]$Message) {
    $body = @{ id = $Id; status = $(if ($Ok) { 'ok' } else { 'error' }); message = $Message }
    Invoke-RestMethod "$Server/agent/done.php" -Method Post -Headers $Headers -Body $body -TimeoutSec 30 | Out-Null
}

function Print-Job($Job) {
    $pdf = Join-Path $env:TEMP "ladolce-$($Job.id).pdf"
    try {
        Invoke-WebRequest "$Server/agent/file.php?id=$($Job.id)" -Headers $Headers `
            -OutFile $pdf -UseBasicParsing -TimeoutSec 120

        $copies = [Math]::Max(1, [int]$Job.copies)
        # Start-Process (PS 5.1) joins arguments without quoting, so quote them here
        $args_  = "-print-to `"$($Config.printer)`" -print-settings `"${copies}x,fit`" -silent -exit-when-done `"$pdf`""
        $proc   = Start-Process $Sumatra -ArgumentList $args_ -PassThru -Wait -WindowStyle Hidden

        if ($proc.ExitCode -eq 0) {
            Write-Log "printed $($Job.id) user=$($Job.user) copies=$copies title=$($Job.title)"
            Send-Result $Job.id $true ''
        } else {
            Write-Log "FAILED $($Job.id): SumatraPDF exit code $($proc.ExitCode)"
            Send-Result $Job.id $false "SumatraPDF exit code $($proc.ExitCode)"
        }
    } finally {
        Remove-Item $pdf -Force -ErrorAction SilentlyContinue
    }
}

Write-Log "agent started (printer: $($Config.printer))"

while ($true) {
    try {
        $r = Invoke-RestMethod "$Server/agent/next.php" -Headers $Headers -TimeoutSec 45
        if ($r.job) {
            Print-Job $r.job
        }
    } catch {
        Write-Log "error: $($_.Exception.Message)"
        Start-Sleep -Seconds 15
    }
}