Pack files to ZIP archive and upload it

# @name         &ZIP and Upload...
# @command      powershell.exe -ExecutionPolicy Bypass -File "%EXTENSION_PATH%" -sessionUrl "!S" -remotePath "!/" -archiveName "!?&Archive name:?archive.zip!" -pause !&
# @description  Packs the selected files to a ZIP archive and uploads it
# @flag         ApplyToDirectories
# @require      .NET 4.5
# @version      1
 
param (
    # Use Generate URL function to obtain a value for -sessionUrl parameter.
    $sessionUrl = "sftp://user:mypassword;fingerprint=ssh-rsa-xx-xx-xx@example.com/",
    [Parameter(Mandatory)]
    $remotePath,
    [Switch]
    $pause = $False,
    [Switch]
    $use7Zip = $False,
    [Parameter(Mandatory)]
    $archiveName,
    [Parameter(Mandatory, ValueFromRemainingArguments, Position=0)]
    $localPaths
)
 
try
{
    Write-Host ("Archiving {0} files to archive {1}..." -f $localPaths.Count, $archiveName)
 
    $archivePath = Join-Path ([System.IO.Path]::GetTempPath()) $archiveName
 
    if (Test-Path $archivePath)
    {
        Remove-Item $archivePath
    }
 
    # Using 7-Zip one can create also other archive formats, not just ZIP
    if ($use7Zip)
    {
        # Create archive
        # The 7z.exe can be replaced with portable 7za.exe
        & "C:\Program Files\7-Zip\7z.exe" a -tzip $archivePath $localPaths
 
        if ($LASTEXITCODE -gt 0)
        {
            throw "Archiving failed."
        }
    }
    else
    {
        Add-Type -AssemblyName "System.IO.Compression"
        Add-Type -AssemblyName "System.IO.Compression.FileSystem"
 
        $zip = [System.IO.Compression.ZipFile]::Open($archivePath, [System.IO.Compression.ZipArchiveMode]::Create)
 
        # Replace with Compress-Archive once PowerShell 5.0 is widespread
 
        foreach ($localPath in $localPaths)
        {
            $parentPath = Split-Path -Parent (Resolve-Path $localPath)
 
            if (Test-Path $localPath -PathType Leaf)
            {
                $files = $localPath
            }
            else
            {
                $files = Get-ChildItem $localPath -Recurse -File | Select-Object -ExpandProperty FullName
            }
 
            foreach ($file in $files)
            {
                $entryName = $file.Replace(($parentPath + "\"), "")
                Write-Host ("Adding {0}..." -f $entryName)
                [System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($zip, $file, $entryName) | Out-Null
            }
        }
 
        $zip.Dispose()
    }
 
    Write-Host ("Archive {0} created, uploading..." -f $archiveName)
 
    # Load WinSCP .NET assembly
    $assemblyPath = if ($env:WINSCP_PATH) { $env:WINSCP_PATH } else { $PSScriptRoot }
    Add-Type -Path (Join-Path $assemblyPath "WinSCPnet.dll")
 
    # Setup session options
    $sessionOptions = New-Object WinSCP.SessionOptions
    $sessionOptions.ParseUrl($sessionUrl)
 
    $session = New-Object WinSCP.Session
 
    try
    {
        # Connect
        $session.Open($sessionOptions)
 
        $session.PutFiles($session.EscapeFileMask($archivePath), $remotePath).Check()
 
        Write-Host ("Archive {0} uploaded." -f $archiveName)
    }
    finally
    {
        # Disconnect, clean up
        $session.Dispose()
    }
 
    Remove-Item $archivePath
    $result = 0
}
catch [Exception]
{
    Write-Host $_.Exception.Message
    $result = 1
}
 
# Pause if -pause switch was used
if ($pause)
{
    Write-Host "Press any key to exit..."
    [System.Console]::ReadKey() | Out-Null
}
 
exit $result