<#
	
	.PARAMETER agent_path
		Path for installed agent
	
	.PARAMETER gw_path
		Path to download the gateway
	
	.PARAMETER gw_version
		Version of the GDataGateway (to get file name)
		
	.PARAMETER source_path
		URL to download the file
		
	.PARAMETER destination_file
		Path to unzip the downloaded file
		
	.PARAMETER log_File
		Output logged to that filename
		
	.EXAMPLE
		
	.LINK
			
	VERSION
		2th September 2024 | 09:45 AM | v1.0.4
		
#>

# Log all information into that file
$log_File = "C:\Temp\Get-GDataGateway_v"

# RMM Agent Folders
$agent_path = "C:\Program Files (x86)\Riverbird\Agents"

# GDataGateway Version
$gw_version = "1.1.42.0"
$gw_file = "$gw_version.zip"

# Source Path and File 
$source_path = "https://packages.riverbird.de/monitoring/plugins/GDataGateway/versions"
$source_file = "$source_path/$gw_file"

# Function to generate Message in Log
function log_Output {

	Param (
		
		$output
	
	)

	# Current date
	$date = (Get-Date -format "yyyy-MM-dd_HH-mm-ss")
	$ldate = (Get-Date -format "yyyy-MM-dd_HH-mm")

	# RMM Agent Log
	$log_File = "{0}{1}-{2}.log" -f $log_File, $gw_version, $ldate
	
    # Format a log message
	$message = "{0}: {1}" -f $date, $($output)
	$message = $message | Out-File $log_file -Append
	return $message
		
}

# Function to get the version of the running RMM Agent UI
function get_RMM.Agent_UI_Version {

    # RMM Agent UI
    $agent_ui = "RMM.Agent.UI"

    # Return RMM Agent UI version
	$result = (Get-Process $agent_ui).FileVersion
    $result = $result.ToString().Split('+')[0].Trim()
    return $result
	
}

$agent_ui = get_RMM.Agent_UI_Version
$gw_path = "$agent_path\v$agent_ui\plugins\GDataGateway"

# Destination File
$destination_file = "$gw_path\$gw_file"

# Download archive from URL
function Download {

    # Check if folder plugins\Gateway exists	
	if (! (Test-Path -Path $gw_path)) {
		
		# Create non existing folder 
		New-Item -type Directory -Force -Path $gw_path
		
		# Build a message string
		$message = "Create non existing folder: {0}" -f $gw_path

		# Log message to a protocol
        log_Output $message
	
	}

	# Download GDataGateway (~ 100 MB)
	if (Test-Path -Path $gw_path -PathType Container) {

        # Change to folder
		Set-Location -Path $gw_path
        
        # Download file
        Invoke-WebRequest $source_file -OutFile $destination_file
		
		# Build a message string
		$message = "Download successful: {0}" -f $destination_file
 
		# Log message to a protocol
        log_Output $message
		
		# Print message to stdout
		Write-Output $message

	}

}

# Unzip downloaded archive
function Unzip {
		
	# Unzip GDataGateway
	if (Test-Path -Path $destination_file -PathType Leaf) {

		cd $gw_path ; Expand-Archive -Path $gw_file -DestinationPath $gw_path\$gw_version -Force
		
		# Build a message string
		$message = "Unzip successful: {0}\{1}" -f $gw_path, $gw_version

		# Log message to a protocol
        log_Output $message
		
		# Print message to stdout
		Write-Output $message

	}

}

# Main
Download
Unzip

exit 0