Install Terraform on Windows

install_terraform.ps1

$VersionInfo = ((Invoke-WebRequest https://api.github.com/repos/hashicorp/terraform/releases/latest).Content | ConvertFrom-Json).tag_name
$VersionInfo = $VersionInfo.Replace("v", "")
Write-Host "Installing Terraform $VersionInfo."
$Url = "https://releases.hashicorp.com/terraform/" + $VersionInfo + "/terraform_" + $VersionInfo + "_windows_amd64.zip"
$InstallDirectory = [Environment]::GetFolderPath([Environment+SpecialFolder]::ApplicationData) + "\Terraform"

if(Test-Path $InstallDirectory) {
    Remove-Item $InstallDirectory -Recurse
}

Write-Host "Creating install directory."
New-Item -ItemType Directory -Path $InstallDirectory | Out-Null
$InstallFile = $InstallDirectory + "\terraform_" + $VersionInfo + "_windows_amd64.zip"
Write-Host "Downloading Terraform executable."
Invoke-WebRequest -Uri $Url -OutFile $InstallFile
Write-Host "Expanding archive."
Expand-Archive -Path $InstallFile -DestinationPath $InstallDirectory -Force

if($Env:Path -notlike "*" + $InstallDirectory + "*") {
    Write-Host "Adding directory to path."
    $Path = (Get-ItemProperty -Path 'Registry::HKEY_CURRENT_USER\Environment' -Name PATH).Path
    $Path = $InstallDirectory + ";" + $Path
    Set-ItemProperty -Path 'Registry::HKEY_CURRENT_USER\Environment' -Name PATH –Value $Path
}