# install.ps1 — install telemetry_monitor as a Windows Scheduled Task
#
# Run from the directory containing this script (PowerShell 5+):
#   powershell -ExecutionPolicy Bypass -File install.ps1
#
# Requires: user with Task Scheduler access (standard user is sufficient)

param (
    [switch]$Uninstall,
    [string]$Email = ""
)

$ErrorActionPreference = "Stop"

$IngestUrl   = "https://aiyoo.in:4443/jeeves/ingest"
$IngestToken = if ($env:INGEST_TOKEN) { $env:INGEST_TOKEN } else { "secret-token" }
$TaskName    = "telemetry_monitor"
$InstallDir  = "$env:ProgramFiles\telemetry_monitor"
$BinaryName  = "telemetry_monitor.exe"
$BinaryDst   = Join-Path $InstallDir $BinaryName

if ($Uninstall) {
    Write-Host "Uninstalling $TaskName..."
    if (Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue) {
        Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
        Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
    }
    if (Get-ScheduledTask -TaskName "sysmonitor" -ErrorAction SilentlyContinue) {
        Stop-ScheduledTask -TaskName "sysmonitor" -ErrorAction SilentlyContinue
        Unregister-ScheduledTask -TaskName "sysmonitor" -Confirm:$false
    }
    if (Test-Path $InstallDir) {
        Remove-Item -Recurse -Force $InstallDir -ErrorAction SilentlyContinue
    }
    Write-Host "✓ $TaskName service and files successfully removed."
    exit 0
}

# Prompt interactively if email not provided and console is interactive
if ([string]::IsNullOrWhiteSpace($Email) -and [Environment]::UserInteractive -and -not [Console]::IsInputRedirected) {
    Write-Host "── Device Owner Configuration ─────────────────────────────────────────"
    Write-Host "Enter primary user/owner email for this device"
    $Prompted = Read-Host "(or press Enter to auto-detect via Active Directory/UPN)"
    if (-not [string]::IsNullOrWhiteSpace($Prompted)) {
        if ($Prompted.Length -le 254 -and $Prompted -match "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$") {
            $Email = $Prompted.Trim()
            Write-Host "✓ Registered initial owner: $Email"
        } else {
            Write-Host "⚠ Invalid email format; continuing with automatic directory resolution."
        }
    } else {
        Write-Host "Continuing with automatic directory resolution."
    }
    Write-Host "────────────────────────────────────────────────────────────────────────"
}

$BinarySrc   = Join-Path $PSScriptRoot "telemetry_monitor-windows-amd64.exe"
if (-not (Test-Path $BinarySrc)) {
    $BinarySrc = Join-Path $PSScriptRoot "dist\telemetry_monitor-windows-amd64.exe"
}

if (-not (Test-Path $BinarySrc)) {
    Write-Error "Binary not found: $BinarySrc"
    exit 1
}

Write-Host "Installing telemetry_monitor (Windows / Scheduled Task)..."

# Copy binary
New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
Copy-Item -Force $BinarySrc $BinaryDst
Write-Host "  binary  -> $BinaryDst"

# Remove existing task if present
if (Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue) {
    Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
}
# Also remove legacy task if present
if (Get-ScheduledTask -TaskName "sysmonitor" -ErrorAction SilentlyContinue) {
    Unregister-ScheduledTask -TaskName "sysmonitor" -Confirm:$false
}

$TaskArgs = "-ingest $IngestUrl -no-local-storage"
if ($IngestToken -ne "") {
    $TaskArgs += " -ingest-token $IngestToken"
}
if (-not [string]::IsNullOrWhiteSpace($Email)) {
    $TaskArgs += " -email `"$Email`""
}

# Register new task
$Action  = New-ScheduledTaskAction `
    -Execute $BinaryDst `
    -Argument $TaskArgs

$Trigger = New-ScheduledTaskTrigger -AtStartup

$Settings = New-ScheduledTaskSettingsSet `
    -ExecutionTimeLimit ([TimeSpan]::Zero) `
    -RestartCount 3 `
    -RestartInterval (New-TimeSpan -Minutes 1)

Register-ScheduledTask `
    -TaskName $TaskName `
    -Action   $Action `
    -Trigger  $Trigger `
    -Settings $Settings `
    -RunLevel Highest `
    -Force | Out-Null

Write-Host "  task    -> Task Scheduler\$TaskName (triggers at startup)"

# Start immediately
Start-ScheduledTask -TaskName $TaskName
Write-Host ""
Write-Host "telemetry_monitor started. Sending to: $IngestUrl"
Write-Host "Check status: Get-ScheduledTask -TaskName telemetry_monitor"