#*******************************************************************
# Global Variables
#*******************************************************************
$Script:Version = '1.0.9.1126'
$Script:LogSeparator = '*******************************************************************************'
$Script:LogFile = ""

#*******************************************************************
# Functions
#*******************************************************************
function Get-ScriptName() {
	#
	# 	 .SYNOPSIS
	# 	     Extracts the script name
	# 	 .DESCRIPTION
	# 	     Extracts the script file name without extention
	# 	 .NOTES
	#		 Author:    Axel Kara, [email protected]
	#
	$tmp = $MyInvocation.ScriptName.Substring($MyInvocation.ScriptName.LastIndexOf('\') + 1)
	$tmp.Substring(0, $tmp.Length - 4)
}

function Write-Log($Msg, [System.Boolean]$LogTime = $true) {
	#
	# 	 .SYNOPSIS
	# 	     Creates a log entry
	# 	 .DESCRIPTION
	# 	     By default a time stamp will be logged too. This can be
	#        disabled with the -LogTime $false parameter
	# 	 .NOTES
	#		 Author:    Axel Kara, [email protected]
	# 	 .EXAMPLE
	# 	     Write-Log -Msg 'Log entry created successfull.' [-LogTime $false]
	#
	if ($LogTime) {
		$date = Get-Date -format dd.MM.yyyy
		$time = Get-Date -format HH:mm:ss
		Add-Content -Path $LogFile -Value ($date + " " + $time + "   " + $Msg)
	}
	else {
		Add-Content -Path $LogFile -Value $Msg
	}
}

function Initialize-LogFile($File, [System.Boolean]$reset = $false) {
	#
	# 	 .SYNOPSIS
	# 	     Initializes the log file
	# 	 .DESCRIPTION
	#		 Creates the log file header
	# 	     Creates the folder structure on local drives if necessary
	#        Resets existing log if used with -reset $true
	# 	 .NOTES
	#		 Author:    Axel Kara, [email protected]
	# 	 .EXAMPLE
	# 	     Initialize-LogFile -File 'C:\Logging\events.log' [-reset $true]
	#
	try {
		#Check if file exists
		if (Test-Path -Path $File) {
			#Check if file should be reset
			if ($reset) {
				Clear-Content $File -ErrorAction SilentlyContinue
			}
		}
		else {
			#Check if file is a local file
			if ($File.Substring(1, 1) -eq ':') {
				#Check if drive exists
				$driveInfo = [System.IO.DriveInfo]($File)
				if ($driveInfo.IsReady -eq $false) {
					Write-Log -Msg ($driveInfo.Name + " not ready.")
				}

				#Create folder structure if necessary
				$Dir = [System.IO.Path]::GetDirectoryName($File)
				if (([System.IO.Directory]::Exists($Dir)) -eq $false) {
					$objDir = [System.IO.Directory]::CreateDirectory($Dir)
					Write-Log -Msg ($Dir + " created.")
				}
			}
		}
		#Write header
		Write-Log -LogTime $false -Msg $LogSeparator
		Write-Log -LogTime $false -Msg (((Get-ScriptName).PadRight($LogSeparator.Length - ("   Version " + $Version).Length, " ")) + "   Version " + $Version)
		Write-Log -LogTime $false -Msg $LogSeparator
	}
	catch {
		Write-Log -Msg $_
	}
}

function Read-Arguments($Values = $args) {
	#
	# 	 .SYNOPSIS
	# 	     Reads named script arguments
	# 	 .DESCRIPTION
	# 	     Reads named script arguments separated by '=' and tagged with'-' character
	# 	 .NOTES
	#		 Author:    Axel Kara, [email protected]
	#
	foreach ($value in $Values) {

		#Change the character that separates the arguments here
		$arrTmp = $value.Split("=")

		switch ($arrTmp[0].ToLower()) {
			-log {
				$Script:LogFile = $arrTmp[1]
			}
		}
	}
}

#*******************************************************************
# Main Script
#*******************************************************************
if ($args.Count -ne 0) {
	#Read script arguments
	Read-Arguments
	if ($LogFile.StartsWith("\\")) {
		Write-Host "UNC"
	}
	elseif ($LogFile.Substring(1, 1) -eq ":") {
		Write-Host "Local"
	}
	else {
		$LogFile = [System.IO.Path]::Combine((Get-Location), $LogFile)
	}

	if ($LogFile.EndsWith(".log") -eq $false) {
		$LogFile += ".log"
	}
}

if ($LogFile -eq "") {
	#Set log file
	$LogFile = [System.IO.Path]::Combine((Get-Location), (Get-ScriptName) + ".log")
}

#Write log header
Initialize-LogFile -File $LogFile -reset $false



#///////////////////////////////////
#/// Enter your script code here ///
#///////////////////////////////////


#Write log footer
Write-Log -LogTime $false -Msg $LogSeparator
Write-Log -LogTime $false -Msg ''