Install Google Fonts through Windows Powershell

install.ps1

#
#  Installs Google Fonts as system fonts using Windows Powershell
#  Created On 20 September 2021
#

# Execute: '$Font = "Open Sans"', (iwr https://git.io/JzcAW).Content | powershell -c -
# Execute locally: '$Font = "Open Sans"', (Get-Content ./install.ps1) | powershell -c -

# ensure that we're running as Administrator
if ('S-1-5-32-544' -notin [System.Security.Principal.WindowsIdentity]::GetCurrent().Groups) {
    Write-Output "Please run as administrator."
    Exit
}

# get my Twitter username's absolute URL
$TwitterRedirect = Invoke-WebRequest -UseBasicParsing -Method Get -Uri "https://vas.cx/twitter"
if ($null -ne $TwitterRedirect.BaseResponse.ResponseUri) {
    # This is for Powershell 5
    $TwitterURL = $TwitterRedirect.BaseResponse.ResponseUri.AbsoluteUri
}
elseif ($null -ne $TwitterRedirect.BaseResponse.RequestMessage.RequestUri) {
    # This is for Powershell core
    $TwitterURL = $TwitterRedirect.BaseResponse.RequestMessage.RequestUri.AbsoluteUri
}
$TwitterUsername = $TwitterURL.substring(20)

# variables we'll be using
$URL = "https://fonts.google.com/download?family=$Font"
$ArchiveDest = "$env:TEMP\vsnthdev_google_font_installer"

# create the temp folder
mkdir "$ArchiveDest" -ErrorAction SilentlyContinue | Out-Null

# download the font archive from Google
$global:ProgressPreference = 'SilentlyContinue'
Invoke-WebRequest -UseBasicParsing -Uri "$URL" -OutFile "$ArchiveDest\font.zip" | Out-Null

# extract the downloaded archive
Expand-Archive -Path "$ArchiveDest\font.zip" -DestinationPath "$ArchiveDest" -Force

# grab all the font files in the fonts folder
$Fonts = Get-ChildItem -Path $ArchiveDest -Include ('*.fon', '*.otf', '*.ttc', '*.ttf') -Recurse

# loop through each font and install it
foreach ($Font in $Fonts) {
    try {
        Copy-Item $Font "C:\Windows\Fonts"
        New-ItemProperty -Name $Font.BaseName -Path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Fonts" -PropertyType string -Value $Font.name -Force | Out-Null
    }
    catch {
        Write-Output "Failed to install ""${FontFamily}"""
        Write-Output "Ensure that:"
        Write-Output "    1. Font exists on Google Fonts."
        Write-Output "    1. The font is already installed."
        Write-Output "    1. Powershell is running as an administrator."
        Write-Output ""
        Write-Output "If it still doesn't work, shoot me a tweet @$TwitterUsername"
        Write-Output ""
        Exit
    }
}

# delete the fonts folder
Remove-Item -Path "$ArchiveDest" -Recurse -Force | Out-Null

# tell the user
Write-Output "Installed ""${Font}"""
Write-Output "Follow me on $TwitterURL"

This doesn't work anymore, the file downloads isn't a zip, its HTML. I'm guessing Google have changed the API.

This doesn't work anymore, the file downloads isn't a zip, its HTML. I'm guessing Google have changed the API.
You can find the files at https://fonts.gstatic.com you open up dev tools on your browser and tack the network when you click the download button. They show up as weird file string though, so you have to do some work to get the names.

I don't have a Windows machine at the moment, otherwise I'd have got it fixed.