New-DeviceEnrollment.ps1

$script:tick = [char]0x221a
$hashPath = "$env:SystemDrive\hwhash.csv"
function Install-PreReq {
    [cmdletbinding()]
    param (
        [Parameter(Mandatory = $true)]
        [string[]]$reqs,
        
        [Parameter(Mandatory = $false)]
        [ValidateSet('Module', 'Script')]
        $type = "Module"
    )
    foreach ($x in $reqs) {
        Write-Host "Installing $type`: $x`.." -Foreground Blue -NoNewLine
        if ($type -eq "Script") {
            $exists = Get-Command -Name $x -errorAction SilentlyContinue
        }
        else {
            $exists = Get-Module -Name $x -ListAvailable -errorAction SilentlyContinue
        }
        if (!($exists)) {
            Invoke-Expression "Install-$type $x -Force -Confirm:`$false"
        }
        Write-Host " $script:tick" -Foreground Green
    }
}
try {
    Write-Host "Installing pre-reqs.." -Foreground Yellow
    Find-PackageProvider -Name "Nuget" | Install-PackageProvider -Force -Confirm:$false | Out-Null
    Install-PreReq -reqs "Get-WindowsAutoPilotInfo" -type "Script"
    Install-PreReq -reqs "Microsoft.Graph.Intune", "WindowsAutoPilotIntune" -type "Module"

    Write-Host "Grabbing device hash.." -Foreground Yellow -NoNewLine
    if (!(Test-Path $hashPath)) {
        $csv = Get-WindowsAutoPilotInfo
        $csv | Export-Csv -Path $hashPath -NoTypeInformation -Force
    }
    if (Test-Path $hashPath) {
        Write-Host " $script:tick" -Foreground Green
    }

    Write-Host "Authenticating to Azure tenant.." -Foreground Yellow -NoNewLine
    $context = Connect-MSGraph

    if ($context) {
        Write-Host " $script:tick" -Foreground Green
        Write-Host "Uploading hardware hash to tenant.." -ForegroundColor Yellow
        Import-AutoPilotCSV -csvFile $hashPath
    }
    else {
        Write-Host " X" -Foreground Red
        throw "Authentication probably failed.."
    }
}
catch {
    $errorMsg = $_.Exception.Message
}
finally {
    if ($errorMsg) {
        Write-Warning $errorMsg
    }
    else {
        Write-Host "Script completed with no obvious isssues.." -ForegroundColor Green
    }
}