Add-SSPFiles.ps1

<#
    .Synopsis
    Uploades the files in a folder in the site/tennant.
    .Description
    This CmdLet uploads all the files that match the matches in a particular folder.
    .Parameter Files
    This parameter contains the Files or File Names to upload from the specified path.
    .Parameter Path
    This parameter contains path from which to upload the files.
    .Parameter Folder
    This parameter contains the name/path of the folder in which to upload the files.
    .Parameter Connection
    This parameter provides the context for the call. The default is the current connection
    returned by "Get-PnPConnection".
    .Example
        PS> Add-SSPFile -Path "." -Files ("image1.png", "image2.jpg") -Folder "Site Assets"
    .Example
        PS> $files = Get-SSPFile -Path "." -Folder "Images" -Matches "*.jpg"
        PS> Add-SSPFile -Path "." -Files $files -Folder "Site Assets"
#>


function Add-SSPFiles {
    param(
        $files,
        [string] $path,
        [string] $folder,
        $connection = (Get-PnPConnection)
    )
    ForEach ($file in $files) {
        if ($file.GetType().Name -eq "File")
        {
            $f = $file.Name
        }
        else
        {
            $f = $file
        }
        Write-Host "Uploading ""$path/$f"" to ""$folder"""
        Add-PnPFile -Path "$path/$f" -Folder "$folder" -Connection $connection
        Write-Host "Done Uploading ""$path/$f"" to ""$folder"""
    }
}