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Add PowerShell language support
Implement PowerShell language server integration using PowerShell Editor Services (PSES). The implementation includes: - PowerShellLanguageServer class with automatic PSES download and setup - Support for PowerShell file extensions: .ps1, .psm1, .psd1 - Symbol detection using PSES format: "function FuncName ()" - 7 basic tests + 2 integration tests covering: - Document symbols and function detection - Within-file references - Cross-file go-to-definition - SerenaAgent find_symbol and find_references Requires: pwsh (PowerShell 7+) in PATH. PSES auto-downloads on first use.
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{"status":"started","languageServiceTransport":"Stdio","powerShellVersion":"7.5.3"}
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# Main script demonstrating various PowerShell features
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# Import utility functions
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. "$PSScriptRoot\utils.ps1"
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# Global variables
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$Script:ScriptName = "Main Script"
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$Script:Counter = 0
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<#
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.SYNOPSIS
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Greets a user with various greeting styles.
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.PARAMETER Username
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The name of the user to greet.
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.PARAMETER GreetingType
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The type of greeting (formal, casual, or default).
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#>
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function Greet-User {
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $true)]
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[string]$Username,
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[Parameter(Mandatory = $false)]
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[ValidateSet("formal", "casual", "default")]
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[string]$GreetingType = "default"
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)
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switch ($GreetingType) {
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"formal" {
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Write-Output "Good day, $Username!"
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}
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"casual" {
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Write-Output "Hey $Username!"
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}
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default {
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Write-Output "Hello, $Username!"
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}
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}
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}
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<#
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.SYNOPSIS
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Processes an array of items with the specified operation.
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.PARAMETER Items
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The array of items to process.
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.PARAMETER Operation
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The operation to perform (count, uppercase).
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#>
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function Process-Items {
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $true)]
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[string[]]$Items,
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[Parameter(Mandatory = $true)]
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[ValidateSet("count", "uppercase")]
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[string]$Operation
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)
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foreach ($item in $Items) {
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switch ($Operation) {
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"count" {
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$Script:Counter++
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Write-Output "Processing item $($Script:Counter): $item"
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}
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"uppercase" {
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Write-Output $item.ToUpper()
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}
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}
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}
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}
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<#
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.SYNOPSIS
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Main entry point for the script.
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#>
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function Main {
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $false)]
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[string]$User = "World",
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[Parameter(Mandatory = $false)]
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[string]$Greeting = "default"
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)
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Write-Output "Starting $Script:ScriptName"
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# Use the Greet-User function
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Greet-User -Username $User -GreetingType $Greeting
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# Process some items
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$items = @("item1", "item2", "item3")
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Write-Output "Processing items..."
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Process-Items -Items $items -Operation "count"
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# Use utility functions from utils.ps1
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$upperName = Convert-ToUpperCase -InputString $User
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Write-Output "Uppercase name: $upperName"
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$trimmed = Remove-Whitespace -InputString " Hello World "
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Write-Output "Trimmed: '$trimmed'"
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Write-Output "Script completed successfully"
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}
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# Run main function
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Main @args
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# Utility functions for PowerShell operations
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<#
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.SYNOPSIS
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Converts a string to uppercase.
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.PARAMETER InputString
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The string to convert.
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.OUTPUTS
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System.String - The uppercase string.
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#>
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function Convert-ToUpperCase {
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[CmdletBinding()]
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[OutputType([string])]
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param(
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[Parameter(Mandatory = $true, ValueFromPipeline = $true)]
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[string]$InputString
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)
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return $InputString.ToUpper()
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}
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<#
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.SYNOPSIS
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Converts a string to lowercase.
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.PARAMETER InputString
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The string to convert.
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.OUTPUTS
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System.String - The lowercase string.
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#>
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function Convert-ToLowerCase {
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[CmdletBinding()]
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[OutputType([string])]
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param(
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[Parameter(Mandatory = $true, ValueFromPipeline = $true)]
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[string]$InputString
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)
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return $InputString.ToLower()
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}
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<#
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.SYNOPSIS
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Removes leading and trailing whitespace from a string.
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.PARAMETER InputString
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The string to trim.
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.OUTPUTS
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System.String - The trimmed string.
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#>
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function Remove-Whitespace {
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[CmdletBinding()]
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[OutputType([string])]
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param(
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[Parameter(Mandatory = $true, ValueFromPipeline = $true)]
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[string]$InputString
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)
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return $InputString.Trim()
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}
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<#
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.SYNOPSIS
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Creates a backup of a file.
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.PARAMETER FilePath
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The path to the file to backup.
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.PARAMETER BackupDirectory
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The directory where the backup will be created.
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.OUTPUTS
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System.String - The path to the backup file.
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#>
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function Backup-File {
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[CmdletBinding()]
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[OutputType([string])]
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param(
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[Parameter(Mandatory = $true)]
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[string]$FilePath,
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[Parameter(Mandatory = $false)]
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[string]$BackupDirectory = "."
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)
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if (-not (Test-Path $FilePath)) {
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throw "File not found: $FilePath"
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}
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$fileName = Split-Path $FilePath -Leaf
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$timestamp = Get-Date -Format "yyyyMMdd_HHmmss"
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$backupName = "$fileName.$timestamp.bak"
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$backupPath = Join-Path $BackupDirectory $backupName
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Copy-Item -Path $FilePath -Destination $backupPath
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return $backupPath
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}
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<#
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.SYNOPSIS
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Checks if an array contains a specific element.
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.PARAMETER Array
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The array to search.
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.PARAMETER Element
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The element to find.
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.OUTPUTS
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System.Boolean - True if the element is found, false otherwise.
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#>
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function Test-ArrayContains {
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[CmdletBinding()]
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[OutputType([bool])]
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param(
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[Parameter(Mandatory = $true)]
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[array]$Array,
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[Parameter(Mandatory = $true)]
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$Element
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)
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return $Array -contains $Element
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}
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<#
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.SYNOPSIS
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Writes a log message with timestamp.
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.PARAMETER Message
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The message to log.
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.PARAMETER Level
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The log level (Info, Warning, Error).
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#>
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function Write-LogMessage {
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[CmdletBinding()]
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param(
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[Parameter(Mandatory = $true)]
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[string]$Message,
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[Parameter(Mandatory = $false)]
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[ValidateSet("Info", "Warning", "Error")]
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[string]$Level = "Info"
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)
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$timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
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$logEntry = "[$timestamp] [$Level] $Message"
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switch ($Level) {
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"Info" { Write-Host $logEntry -ForegroundColor White }
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"Warning" { Write-Host $logEntry -ForegroundColor Yellow }
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"Error" { Write-Host $logEntry -ForegroundColor Red }
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}
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}
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<#
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.SYNOPSIS
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Validates if a string is a valid email address.
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.PARAMETER Email
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The email address to validate.
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.OUTPUTS
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System.Boolean - True if the email is valid, false otherwise.
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#>
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function Test-ValidEmail {
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[CmdletBinding()]
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[OutputType([bool])]
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param(
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[Parameter(Mandatory = $true)]
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[string]$Email
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)
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$emailRegex = "^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$"
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return $Email -match $emailRegex
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}
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<#
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.SYNOPSIS
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Checks if a string is a valid number.
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.PARAMETER Value
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The string to check.
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.OUTPUTS
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System.Boolean - True if the string is a valid number, false otherwise.
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#>
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function Test-IsNumber {
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[CmdletBinding()]
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[OutputType([bool])]
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param(
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[Parameter(Mandatory = $true)]
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[string]$Value
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)
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$number = 0
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return [double]::TryParse($Value, [ref]$number)
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}
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