param(
    [string]$PackageRoot = (Split-Path -Parent $PSScriptRoot),
    [string]$InstallPath = "C:\Program Files\JR IT Services\HostAvailabilityMonitor",
    [string]$ConfigRoot = "C:\ProgramData\JR IT Services\HostAvailabilityMonitor",
    [switch]$RegisterEventSource,
    [switch]$CreateBackup
)

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

$repoScripts = Join-Path (Split-Path -Parent (Split-Path -Parent $PSScriptRoot)) 'scripts'
$monitorSource = Join-Path $PackageRoot 'monitor'
if (-not (Test-Path -LiteralPath $monitorSource)) {
    $monitorSource = Join-Path (Split-Path -Parent $PackageRoot) 'monitor'
}
if (-not (Test-Path -LiteralPath $monitorSource)) {
    throw "Monitor source folder not found below package root: $PackageRoot"
}

& (Join-Path $repoScripts 'install-on-server.ps1') `
    -SourcePath $monitorSource `
    -InstallPath $InstallPath `
    -RegisterEventSource:$RegisterEventSource `
    -CreateBackup:$CreateBackup

New-Item -Path $ConfigRoot -ItemType Directory -Force | Out-Null
$configFile = Join-Path $ConfigRoot 'appsettings.json'
$defaultConfig = Join-Path $InstallPath 'appsettings.json'
if ((Test-Path -LiteralPath $defaultConfig) -and (-not (Test-Path -LiteralPath $configFile))) {
    Copy-Item -Path $defaultConfig -Destination $configFile -Force
}
Write-Host "[INFO] HostAvailabilityMonitor installed to $InstallPath"
Write-Host "[INFO] Config location: $configFile"