# Import necessary modules
Import-Module Corsinvest.ProxmoxVE.Api
Import-Module ImportExcel

# Proxmox connection info
$ProxmoxURL = "https://your-proxmox-url:8006"
$ProxmoxUser = "root"
$ProxmoxPassword = "P@ssw0rd"
$ProxmoxRealm = "pam"

# Connect to Proxmox
$credentials = New-Object System.Management.Automation.PSCredential ($ProxmoxUser, (ConvertTo-SecureString $ProxmoxPassword -AsPlainText -Force))
$null = Connect-PveCluster -Server $ProxmoxURL -User $ProxmoxUser -Realm $ProxmoxRealm -Credential $credentials

# Read Excel data
$excelPath = "/path/to/depl_systems.xlsx"
$hostsData = Import-Excel -Path $excelPath

# Function to get VMs from Proxmox
function Get-ProxmoxVMs {
    $vms = Get-PveVM
    return $vms
}

# Function to check missing VMs
function Get-MissingVMs {
    $proxmoxVMs = Get-ProxmoxVMs
    $missingVMs = @()

    foreach ($host in $hostsData) {
        $vmName = $host.'VM-Name'
        if ($proxmoxVMs | Where-Object { $_.name -eq $vmName } -eq $null) {
            $missingVMs += $host
        }
    }

    return $missingVMs
}

# Function to get node usage
function Get-NodeUsage {
    param ($node)

    $usage = Get-PveNodeStatus -NodeName $node
    return @{
        Node = $node
        MaxMem = $usage.memory.total
        Mem = $usage.memory.used
        MaxDisk = $usage.rootfs.total