# PC Monitor Client Installation Script
# Run as Administrator

param(
    [string]$ServerUrl = "http://your-server:8080",
    [string]$InstallDir = "C:\Program Files\PCMonitor"
)

# Check if running as Administrator
$isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
if (-not $isAdmin) {
    Write-Error "Please run this script as Administrator"
    exit 1
}

Write-Host "Installing PC Monitor Client..." -ForegroundColor Green

# Create installation directory
if (-not (Test-Path $InstallDir)) {
    New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
}

# Copy executable
$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$exePath = Join-Path $scriptDir "pc-monitor-client.exe"

if (-not (Test-Path $exePath)) {
    Write-Error "pc-monitor-client.exe not found in script directory"
    exit 1
}

Copy-Item $exePath -Destination $InstallDir -Force

# Create config file
$configPath = Join-Path $InstallDir "config.yaml"
@"
server:
  url: "$ServerUrl"
  token: ""
collect:
  interval: 30s
report:
  interval: 60s
"@ | Out-File -FilePath $configPath -Encoding UTF8

# Create Windows Service using NSSM
$nssmPath = Join-Path $InstallDir "nssm.exe"
if (-not (Test-Path $nssmPath)) {
    Write-Host "Downloading NSSM..." -ForegroundColor Yellow
    $nssmUrl = "https://nssm.cc/release/nssm-2.24.zip"
    $zipPath = Join-Path $InstallDir "nssm.zip"
    Invoke-WebRequest -Uri $nssmUrl -OutFile $zipPath
    Expand-Archive -Path $zipPath -DestinationPath $InstallDir -Force
    $nssmExe = Get-ChildItem -Path $InstallDir -Recurse -Filter "nssm.exe" | Where-Object { $_.FullName -match "win64" } | Select-Object -First 1
    if ($nssmExe) {
        Copy-Item $nssmExe.FullName -Destination $nssmPath -Force
    }
    Remove-Item $zipPath -Force
}

# Install service
$serviceName = "PCMonitor"
$clientExe = Join-Path $InstallDir "pc-monitor-client.exe"

& $nssmPath install $serviceName $clientExe
& $nssmPath set $serviceName AppDirectory $InstallDir
& $nssmPath set $serviceName DisplayName "PC Monitor Client"
& $nssmPath set $serviceName Description "Monitors PC hardware metrics and reports to server"
& $nssmPath set $serviceName Start SERVICE_AUTO_START
& $nssmPath set $serviceName AppStdout (Join-Path $InstallDir "stdout.log")
& $nssmPath set $serviceName AppStderr (Join-Path $InstallDir "stderr.log")

# Start service
Start-Service $serviceName

Write-Host ""
Write-Host "Installation complete!" -ForegroundColor Green
Write-Host "Service '$serviceName' installed and started." -ForegroundColor Green
Write-Host ""
Write-Host "Configuration file: $configPath" -ForegroundColor Cyan
Write-Host "Please edit the config file to set your server URL and token." -ForegroundColor Cyan
Write-Host ""
Write-Host "Useful commands:" -ForegroundColor Yellow
Write-Host "  Start service:   Start-Service $serviceName"
Write-Host "  Stop service:    Stop-Service $serviceName"
Write-Host "  Service status:  Get-Service $serviceName"
Write-Host "  View logs:       Get-Content (Join-Path $InstallDir 'stdout.log') -Tail 50"