Install WinGet (.ps1)! (on x64 systems)

Install-WinGet.ps1

$ErrorActionPreference = "Stop"
$apiLatestUrl = 'https://api.github.com/repos/microsoft/winget-cli/releases/latest'
$tempFolder = $env:TEMP

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$WebClient = New-Object System.Net.WebClient


function Update-EnvironmentVariables {
  foreach($level in "Machine","User") {
    [Environment]::GetEnvironmentVariables($level).GetEnumerator() | % {
        # For Path variables, append the new values, if they're not already in there
        if($_.Name -match 'Path$') {
          $_.Value = ($((Get-Content "Env:$($_.Name)") + ";$($_.Value)") -split ';' | Select -unique) -join ';'
        }
        $_
    } | Set-Content -Path { "Env:$($_.Name)" }
  }
}

function Get-LatestUrl {
  ((Invoke-WebRequest $apiLatestUrl -UseBasicParsing | ConvertFrom-Json).assets | Where-Object { $_.name -match '^Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle$' }).browser_download_url
}

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
}

# Hide the progress bar of Invoke-WebRequest
$oldProgressPreference = $ProgressPreference
$ProgressPreference = 'SilentlyContinue'

$desktopAppInstaller = @{
  fileName = 'Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle'
  url      = $(Get-LatestUrl)
  hash     = $(Get-LatestHash)
}

$vcLibsUwp = @{
  fileName = 'Microsoft.VCLibs.x64.14.00.Desktop.appx'
  url      = 'https://aka.ms/Microsoft.VCLibs.x64.14.00.Desktop.appx'
  hash     = '6602159c341bafea747d0edf15669ac72df8817299fbfaa90469909e06794256'
}
$uiLibsUwp = @{
    fileName = 'Microsoft.UI.Xaml.2.7.zip'
    url = 'https://www.nuget.org/api/v2/package/Microsoft.UI.Xaml/2.7.0'
    hash = "422FD24B231E87A842C4DAEABC6A335112E0D35B86FAC91F5CE7CF327E36A591"
}

$dependencies = @($desktopAppInstaller, $vcLibsUwp, $uiLibsUwp)

foreach ($dependency in $dependencies) {
  $dependency.file = $dependency.fileName
  iwr $dependency.url -OutFile $dependency.file
}

Expand-Archive -Path $uiLibsUwp.file -DestinationPath ".\Microsoft.UI.Xaml.2.7" -Force
$uiLibsUwp.file = ".\Microsoft.UI.Xaml.2.7\tools\AppX\x64\Release\Microsoft.UI.Xaml.2.7.appx"
Add-AppxPackage -Path $desktopAppInstaller.file -DependencyPath $vcLibsUwp.file,$uiLibsUwp.File

rm $desktopAppInstaller.file
rm $vcLibsUwp.file
rm -r .\Microsoft.UI.Xaml.2.7*
Write-Host "WinGet installed!" -ForegroundColor Green
$ProgressPreference = $oldProgressPreference
Update-EnvironmentVariables
# winget install Microsoft.WindowsTerminal
# winget install ubuntu