# Script to install winget.
# Technolog Networks, 2025-10-18
# iRaven
<#
.SYNOPSIS
Updates Nextcloud Client
.PARAMETER MDT
Set if in use with MDT for logging
#>

Start-Transcript -Path "c:\irnh\Install-WinGet.log" -Append

$PSModulePathAU = $env:PSModulePath.split(';')[1] # All Users PSModule path
if ($MDT){
	$MDTPath = $Global:TSEnv.Value("DeployRoot")	
}

# See if the shit we need exists.
Function Check-WinGet-Install {
	try {
		winget --version
		Write-Host "WinGet already exists!"
		return $true
	}
	catch {
		Write-Host "WinGet does not exist!"
		return $false
	}
}

Function ImportPSWinGet {
	Write-Host -ForegroundColor Yellow "Importing Winget PS module..."
	try {
		if (!(Test-Path -Path $PSModulePathAU\Microsoft.WinGet.Client -PathType Container)){
			# Get from PSGallery/NuGet
			Write-Host -ForegroundColor Yellow "Installing Microsoft.WinGet.Client from PSGallery"
			if (!(Get-PackageProvider -ListAvailable -Name 'NuGet' -ErrorAction Ignore)) {
				Write-Host -ForegroundColor Yellow 'Installing NuGet package provider...'
				Install-PackageProvider -Name 'NuGet' -Force
				Install-Module -Name Microsoft.WinGet.Client -Scope AllUsers -Force
			} else {	
				Install-Module -Name Microsoft.WinGet.Client -Scope AllUsers -Force
			}
		}
		Import-Module Microsoft.WinGet.Client -Force
		Write-Host -ForegroundColor Green "Microsoft.WinGet.Client module imported!"
		Write-LogEntry -Value "Microsoft.WinGet.Client module imported!" -Severity 1 -Component "ImportPSWindowsUpdate" -FileName $ScriptLog
		return $true
	} catch {
		Write-LogEntry -Value "Failed to import PSWindowsUpdate!" -Severity 3 -Component "ImportPSWindowsUpdate" -FileName $ScriptLog
		Write-Host -ForegroundColor Red "Failed to import PSWindowsUpdate!"
		return $false
	}
}

Function Install-WinGet {
	if (ImportPSWinGet){
		try {
			repair-wingetpackagemanager
		} catch {
			Write-Host -ForegroundColor Red "Couldn't repair/install WinGet"
		}
	}
}

Function Write-LogEntry
{
    #Write data to a CMTrace compatible log file. (Credit to SCConfigMgr - https://www.scconfigmgr.com/)

	param(
		[parameter(Mandatory = $true, HelpMessage = "Value added to the log file.")]
		[ValidateNotNullOrEmpty()]
		[string]$Value,
		[parameter(Mandatory = $true, HelpMessage = "Severity for the log entry. 1 for Informational, 2 for Warning and 3 for Error.")]
		[ValidateNotNullOrEmpty()]
		[ValidateSet("1", "2", "3")]
		[string]$Severity,
		[parameter(Mandatory = $true, HelpMessage = "Component of the log file.")]
		[ValidateNotNullOrEmpty()]
		[string]$Component,
		[parameter(Mandatory = $false, HelpMessage = "Name of the log file that the entry will written to.")]
		[ValidateNotNullOrEmpty()]
		[string]$FileName
	)
    #Determine log file location
    $LogFilePath = $FileName
    #Construct time stamp for log entry
    if(-not(Test-Path -Path 'variable:global:TimezoneBias'))
    {
        [string]$global:TimezoneBias = [System.TimeZoneInfo]::Local.GetUtcOffset((Get-Date)).TotalMinutes
        if($TimezoneBias -match "^-")
        {
            $TimezoneBias = $TimezoneBias.Replace('-', '+')
        }
        else
        {
            $TimezoneBias = '-' + $TimezoneBias
        }
    }
    $Time = -join @((Get-Date -Format "HH:mm:ss.fff"), $TimezoneBias)
    #Construct date for log entry
    $Date = (Get-Date -Format "MM-dd-yyyy")
    #Construct context for log entry
    $Context = $([System.Security.Principal.WindowsIdentity]::GetCurrent().Name)
    #Construct final log entry
    $LogText = "<![LOG[$($Value)]LOG]!><time=""$($Time)"" date=""$($Date)"" component=""$($Component)"" context=""$($Context)"" type=""$($Severity)"" thread=""$($PID)"" file="""">"
    #Add value to log file
    try
    {
        Out-File -InputObject $LogText -Append -NoClobber -Encoding Default -FilePath $LogFilePath -ErrorAction Stop
    }
    catch [System.Exception]
    {
        Write-Warning -Message "Unable to append log entry to $FileName file. Error message at line $($_.InvocationInfo.ScriptLineNumber): $($_.Exception.Message)"
    }
}

# Main script

if ($MDT){
	$ScriptLog = "$MDTPath\_Logs\$env:ComputerName-WinGet.log"	
} else {
	$ScriptLog = "$env:SystemDrive\irnh\Install-WinGet.log"
}

if (!(Check-WinGet-Install)) {
	Install-WinGet
}

Stop-Transcript