How do I bulk upload documents into SharePoint along with metadata, using Powershell?

I have a ton of documents that I have to upload into SharePoint from a file share using PowerShell, along with metadata that is in a csv (or excel) file. Is it possible to have a general code that can read/match the columns listed on the .csv file with the columns in the SharePoint library? I was wondering if it is possible to create a script that can be used on any library, without having to list the column names within the code. Am trying to come up with a script that can just be used on any library. Am currently doing something like this, but I would like to use something more generic...where I don't have to specify the column names. Is this even possible?

$SiteUrl = "URL OF THE SITE COLLECTION"
$web = Get-SPWeb $SiteUrl
$csvFile = "C:\\CSVFILEWITHMETADATA.csv"

foreach($i in Import-CSV $csvFile)
{
	$Library = $i.DocumentLibrary
	$docLibrary = $web.Lists[$Library]
	$rootFolder = $docLibrary.RootFolder
	$sourceFile = Get-ChildItem $i.DocumentLink
	$destinationFolderPath = $rootFolder.Url

	if($i.DestinationFolder -ne "")
	{
		$destinationFolderPath += "/" + $i.DestinationFolder.replace("\","/")
		$folders = $i.DestinationFolder.Split("\")
		$subFolder = $rootFolder
		foreach($f in $folders)
		{
			$testFolder = $subFolder.SubFolders[$f];
			if($testFolder -eq $null)
			{
				$subFolder = $subFolder.SubFolders.Add($f)"created new folder " + $f
			}
			else
			{
				$subFolder = $testFolder
			}
		}
	}
	$destinationFolderPath += "/" + $sourceFile.Name"copying " + $destinationFolderPath

		$itemType = $docLibrary.ContentTypes[$i.ContentType]
		$newFile = $docLibrary.RootFolder.Files.Add($destinationFolderPath,$sourceFile.OpenRead(), $true)
		$theItem = $newFile.Item
		$theItem["ContentTypeId"] = $itemType.Id
		#Write success to log file
		$logMsg = "File name " + $i.FileName + " with content type " + $i.ContentType  + " successfully added" + "|Success"
		Add-Content $logFile $logMsg

		# UPDATING METADATA
		$theItem["Description"] = $i.Description
		$theItem["Title"] = $i.Title
		$theItem["Seller"] = $i.Seller
		$theItem["Buyer"] = $i.Buyer
		$theItem["PurchaseDate"] = $i.PDate
		$theItem["ExpDate"] = $i.ExpirationDate

		# Prepare and Populated Taxonomy field for Status
		$myStatus = $i.Status
		$termST = $terms | ?{$_.Name -eq $myStatus}
		$tFieldStatus = $docLibrary.Fields["Status"]
		$tItemFieldStatus = [Microsoft.SharePoint.Taxonomy.TaxonomyField]$theItem.Fields[$tFieldStatus]
		$tItemFieldStatus.SetFieldValue($theItem, $termST)

		# Prepare and Populated Taxonomy field for Sales Type
		$mySalesType = $i.SalesType
		$termSalesType = $terms | ?{$_.Name -eq $mySalesType}
		$tFieldSalesType = $docLibrary.Fields["SalesType"]
		$tItemFieldSalesType = [Microsoft.SharePoint.Taxonomy.TaxonomyField]$theItem.Fields[$tFieldSalesType]
		$tItemFieldSalesType.SetFieldValue($theItem, $termSalesType)

		$theItem.Update()
}
$web.Dispose()