new file: functions/Compress-File.ps1

new file:   functions/StartStoper.ps1
	new file:   functions/Write-LogMessage.ps1

functions/Compress-File.ps1

@@ -0,0 +1,61 @@
+# <>
+#
+# 1) Compress-File -Path C:\Users\userprofile\file.txt -Compression high -DeleteOriginal
+# 2) Compress-File -Path C:\Users\userprofile\file.txt -Compression medium 
+#
+# 1 Will compress at High level and after succesfull compression will delete source file.
+# 2 Will just compress file at medium level.
+#
+function Compress-File {
+    param (
+        [Parameter(Mandatory=$true)]
+        [string]$Path,
+        [Parameter(Mandatory=$false)]
+        [ValidateSet('low', 'medium', 'high')]
+        [string]$Compression = 'medium',
+        [Parameter(Mandatory=$false)]
+        [switch]$DeleteOriginal
+    )
+
+    try {
+        # Check if the file exists
+        if (!(Test-Path -Path $Path -PathType Leaf)) {
+            Write-Error "File $Path does not exist or is not a file."
+            return
+        }
+
+        # Set the compression level
+        switch ($Compression) {
+            'low'  { $compressionLevel = [System.IO.Compression.CompressionLevel]::NoCompression }
+            'medium'     { $compressionLevel = [System.IO.Compression.CompressionLevel]::Fastest }
+            'high'  { $compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal }
+        }
+
+        # Get the file name
+        $fileName = [System.IO.Path]::GetFileName($Path)
+        $zipFileName = "$($fileName).zip"
+
+        # Create the path to the ZIP file
+        $zipFilePath = Join-Path -Path (Split-Path -Parent -Path $Path) -ChildPath $zipFileName
+
+        # Compress the file to ZIP format
+        $zipArchive = [System.IO.Compression.ZipFile]::Open($zipFilePath, [System.IO.Compression.ZipArchiveMode]::Create)
+        $zipEntry = $zipArchive.CreateEntry($fileName)
+        $stream = $zipEntry.Open()
+        $fileStream = [System.IO.File]::OpenRead($Path)
+        $fileStream.CopyTo($stream)
+        $fileStream.Dispose()
+        $stream.Dispose()
+        $zipArchive.Dispose()
+
+        Write-Output "File $fileName has been compressed to $zipFilePath with compression level '$Compression'."
+
+        if ($DeleteOriginal) {
+            Remove-Item -Path $Path -Force
+            Write-Output "Original file $Path has been deleted."
+        }
+    }
+    catch {
+        Write-Error "An error occurred while compressing the file: $($_.Exception.Message)"
+    }
+}

functions/StartStoper.ps1

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+$stopwatch = [System.Diagnostics.Stopwatch]::StartNew()
+# Some code block
+$stopwatch.Stop()
+Write-Host "Execution time: $($stopwatch.ElapsedMilliseconds) ms"

functions/Write-LogMessage.ps1

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+# <>
+#
+# 1) Write-LogMessage -level "INFO" -message "Some Messaage to LOG" -Path C:\Users\userprofile\file.txt
+# 2) Write-LogMessage -level "ERROR" -message "Some Messaage to LOG" -Path C:\Users\userprofile\file.txt
+#
+# 1 Will log directly INFO message
+# 2 Will log directly ERROR message and system $error[0] variable
+#
+
+function Write-LogMessage {
+    param (
+      [ValidateSet("INFO", "WARNING", "ERROR")]
+      [string]$Level,
+      [string]$Message,
+      [string]$Path
+    )
+    
+    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss.fff"
+    if ($Level -eq "ERROR") {
+        $logMessage = "[$timestamp] [$Level] $Message | $($Error[0] | Select-Object *)"
+    } else {
+        $logMessage = "[$timestamp] [$Level] $Message"
+    }
+    $logMessage | Add-Content $Path -Encoding utf8
+  }