Powershell script to add a asset to Snipe-IT.

Snipe-IT_Inventory.ps1

#Pre-reqs

param (
  [string] $clientName
)

#Check if NuGet is installed, if not install it
if ((Get-PackageProvider -Name NuGet).version -lt 2.8.5.201 ) {
    try {
        Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Confirm:$False -Force 
    }
    catch [Exception]{
        $_.message 
        exit
    }
}

Set-PSRepository -Name "PSGallery" -InstallationPolicy Trusted

#Check if SnipeITPS Modul is installed, if not installed. If update to latest version
if (-not (Get-Module -Name "SnipeitPS")) {
	try {
		Install-Module SnipeitPS
	}
    catch [Exception]{
        $_.message 
        exit
    }
} else {
	try {
		Update-Module -Name SnipeitPS -Force
	}
    catch [Exception]{
        $_.message 
        exit
    }
}

#Connection variables - Be sure to create a new user in Snipe-IT with ONLY Read, Create and Edit rights, and then generate API key.
$apikey = "API KEY"
$url = "SNIPEIT URL" #Base URL, do not add /api/v1/hardware

#Create connection with Snipe-IT installation
Connect-SnipeitPS -url $url -apiKey $apikey

#Computer name
$computerName = $env:computername
#Serial Number
$assetTag = (Get-WmiObject win32_bios -ComputerName $computerName).SerialNumber
#Raw Memory Value
$cs = (Get-WmiObject -class Win32_ComputerSystem -ComputerName $computerName).TotalPhysicalMemory
#Convert to GB Value
$memoryAmount = [math]::Ceiling($cs / 1024 / 1024 / 1024)
#Model Number
$modelno = (Get-WmiObject -class Win32_ComputerSystem -ComputerName $computerName).Model
#Manufacturer
$manufacturer = (Get-WmiObject -class Win32_ComputerSystem -ComputerName $computerName).Manufacturer
#Type of computer
$ComputerType = (Get-WmiObject -Class:Win32_ComputerSystem -ComputerName $computerName).PCSystemTypeEx
#OS Version
$OS = (Get-WmiObject  Win32_OperatingSystem -ComputerName $computerName).caption
#OS Architecture
$OSArch = (Get-WmiObject  Win32_OperatingSystem -ComputerName $computerName).osarchitecture
#Processor type
$cpu = (Get-WmiObject Win32_Processor -ComputerName $computerName).Name

#If manufacturer does not exist in Snipe-IT, create.
$manufacturerSelection = Get-SnipeitManufacturer | Where-Object {$_.name -like "$manufacturer"}
if(([string]::IsNullOrEmpty($manufacturerSelection))){
    New-SnipeitManufacturer -Name $manufacturer
}

#Set default type of asset to be "Other"
$Categoryid = 8


#Update type of computer if applicable.
if ($ComputerType = 1)
    {$Categoryid = 7} #Desktop
if ($ComputerType = 2)
    {$Categoryid = 6} #Laptop
if ($manufacturer -like "*VMware*")
    {$Categoryid = 9}


#If the model does not exist in Snipe-IT, create.
#Fieldset_id 2 refers to the collection of custom fields you also want to populate on each asset.  You can get the field ID for your Fieldset by running 'Get-SnipeitFieldset'
$modelSelection = Get-SnipeitModel | Where-Object {$_.name -like "*$modelno*"}
if(([string]::IsNullOrEmpty($modelSelection))){
	$Assetmanufacturer = Get-SnipeitManufacturer | Where-Object {$_.name -like "*$manufacturer*"}
	New-SnipeitModel -name $modelno -category_id $Categoryid -manufacturer_id $Assetmanufacturer.id -Fieldset_id 2
    $modelSelection = Get-SnipeitModel | Where-Object {$_.name -like "*$modelno*"}
}

#If the client (name pulled from TRMM) does not exist in Snipe-IT, create.
#Ensure you have '-clientName ' as a Script Arguement.
$companySelection = Get-SnipeitCompany | Where-Object {$_.name -like "*$clientName*"}
if(([string]::IsNullOrEmpty($companySelection))){
    New-SnipeitCompany -name $clientName
    $companySelection = Get-SnipeitCompany | Where-Object {$_.name -like "*$clientName*"}
}

if([string]::IsNullOrWhiteSpace($assetTag))
{
	$assetTag = -join ((48..57) + (97..122) | Get-Random -Count 8 | % {[char]$_})
}
else {
	#Check whether asset tag exists in Snipe-IT
	$assetExists = Get-SnipeitAsset -search $assetTag

	#If asset exists, update.  If not exist, create.
	#Each custom field needs to be referenced through the hashtable.  You can get the field IDs by running 'Get-SnipeitCustomeField'
	if(([string]::IsNullOrEmpty($assetExists)))
	{
		New-SnipeitAsset -Name $computerName -tag $assetTag  -serial $assetTag -company_id $($companySelection.id) -model_id $($modelSelection.id) -Status "2" -customfields @{ "_snipeit_cpu_3" = "$cpu"; "_snipeit_memory_2" = "$memoryAmount GB"; "_snipeit_os_4" = "$OS"; "_snipeit_os_architecture_5" = "$OSArch" }
	}
	else {
		Set-SnipeitAsset -id $($assetExists.id) -Name $computerName -company_id $($companySelection.id) -model_id $($modelSelection.id) -Status "2" -customfields @{ "_snipeit_cpu_3" = "$cpu"; "_snipeit_memory_2" = "$memoryAmount GB"; "_snipeit_os_4" = "$OS"; "_snipeit_os_architecture_5" = "$OSArch" }
	}
}