winutil/functions/private/Install-WinUtilWinget.ps1

function Get-LatestHash {
    $shaUrl = ((Invoke-WebRequest $apiLatestUrl -UseBasicParsing | ConvertFrom-Json).assets | Where-Object { $_.name -match '^Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.txt$' }).browser_download_url
  
    $shaFile = Join-Path -Path $tempFolder -ChildPath 'Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.txt'
    $WebClient.DownloadFile($shaUrl, $shaFile)
  
    Get-Content $shaFile
}

function Install-WinUtilWinget {

    <#

    .SYNOPSIS
        Installs Winget if it is not already installed

    #>
    Try{
        Write-Host "Checking if Winget is Installed..."
        if (Test-WinUtilPackageManager -winget) {
            # Checks if winget executable exists and if the Windows Version is 1809 or higher
            Write-Host "Winget Already Installed"
            return
        }

        # Gets the computer's information
        if ($null -eq $sync.ComputerInfo){
            $ComputerInfo = Get-ComputerInfo -ErrorAction Stop
        }
        Else {
            $ComputerInfo = $sync.ComputerInfo
        }

        if (($ComputerInfo.WindowsVersion) -lt "1809") {
            # Checks if Windows Version is too old for winget
            Write-Host "Winget is not supported on this version of Windows (Pre-1809)"
            return
        }

        Write-Host "Running Alternative Installer and Direct Installing"
        Start-Process -Verb runas -FilePath powershell.exe -ArgumentList "irm https://raw.githubusercontent.com/ChrisTitusTech/winutil/main/winget.ps1 | iex"
        
        Write-Host "Winget Installed"
    }
    Catch{
        throw [WingetFailedInstall]::new('Failed to install')
    }
}