1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122

# Terraform Installation Script for Windows
# Downloads and installs the latest Terraform from HashiCorp releases

if ($PSVersionTable.PSVersion.Major -lt 5 -or
    ($PSVersionTable.PSVersion.Major -eq 5 -and $PSVersionTable.PSVersion.Minor -lt 1)) {
    Write-Host "This script requires PowerShell 5.1 or later" -ForegroundColor Red
    Write-Host "Current version: $($PSVersionTable.PSVersion)" -ForegroundColor Red
    exit 1
}

$ErrorActionPreference = "Stop"
$ProgressPreference = "SilentlyContinue"

$InstallDir = "$env:USERPROFILE\.local\bin"
$BinName = "terraform.exe"

function Write-Log {
    param(
        [ValidateSet("INF", "WRN", "ERR")]$Level = "INF",
        [Parameter(Mandatory)][string]$Message
    )
    $colors = @{ INF = "Blue"; WRN = "Yellow"; ERR = "Red" }
    Write-Host "$Level " -ForegroundColor $colors[$Level] -NoNewline
    Write-Host $Message
}

function Get-Arch {
    if (-not [Environment]::Is64BitOperatingSystem) {
        Write-Log ERR "This script requires a 64-bit operating system"
        exit 1
    }

    switch ($env:PROCESSOR_ARCHITECTURE) {
        "AMD64" { return "amd64" }
        "ARM64" { return "arm64" }
        default {
            Write-Log ERR "Unsupported architecture: $env:PROCESSOR_ARCHITECTURE"
            exit 1
        }
    }
}

function Get-LatestVersion {
    $Response = Invoke-RestMethod -Uri "https://checkpoint-api.hashicorp.com/v1/check/terraform"
    return $Response.current_version
}

function Install-Terraform {
    $Version = Get-LatestVersion
    $Arch = Get-Arch

    $ArchiveName = "terraform_${Version}_windows_${Arch}.zip"
    $DownloadUrl = "https://releases.hashicorp.com/terraform/$Version/$ArchiveName"

    $TempDir = Join-Path $env:TEMP "terraform-install"
    $ArchivePath = Join-Path $TempDir $ArchiveName

    Write-Log INF "Installing terraform $Version for $Arch"
    Write-Log INF "Downloading from $DownloadUrl"
    Write-Log INF "Installing to $InstallDir"

    $ExistingBin = Join-Path $InstallDir $BinName
    if (Test-Path $ExistingBin) {
        $ExistingVersion = & $ExistingBin version -json 2>$null | ConvertFrom-Json | Select-Object -ExpandProperty terraform_version
        Write-Log WRN "Found existing $ExistingVersion (will be upgraded to $Version)"
    }

    New-Item -ItemType Directory -Force -Path $TempDir | Out-Null

    Write-Log INF "Downloading archive"
    Invoke-WebRequest -Uri $DownloadUrl -OutFile $ArchivePath -UseBasicParsing

    Expand-Archive -Path $ArchivePath -DestinationPath $TempDir -Force

    New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null

    $ExtractedBin = Join-Path $TempDir $BinName
    if (-not (Test-Path $ExtractedBin)) {
        Write-Log ERR "Extracted binary not found at expected location"
        exit 1
    }

    Move-Item -Path $ExtractedBin -Destination (Join-Path $InstallDir $BinName) -Force

    Write-Log INF "Installed terraform $Version to $InstallDir\$BinName"

    Remove-Item -Path $TempDir -Recurse -Force

    $CurrentPath = [Environment]::GetEnvironmentVariable("PATH", "User")

    if ([string]::IsNullOrEmpty($CurrentPath)) {
        [Environment]::SetEnvironmentVariable("PATH", $InstallDir, "User")
        Write-Log INF "Added $InstallDir to PATH (requires shell restart)"
    }
    else {
        $PathEntries = $CurrentPath -split ';'
        if ($PathEntries -notcontains $InstallDir) {
            $NewPath = "$CurrentPath;$InstallDir"
            [Environment]::SetEnvironmentVariable("PATH", $NewPath, "User")
            Write-Log INF "Added $InstallDir to PATH (requires shell restart)"
        }
    }

    Write-Host ""
    Write-Host "Next steps:" -ForegroundColor Green
    Write-Host "  1. Restart your terminal"
    Write-Host "  2. Run: 'terraform version' to verify the installation"
}

try {
    Write-Host ""
    Write-Host "Terraform Windows Installer" -ForegroundColor Green
    Write-Host "Source: https://releases.hashicorp.com/terraform" -ForegroundColor Gray
    Write-Host ""
    Install-Terraform
}
catch {
    Write-Host ""
    Write-Log ERR "An error occurred when installing terraform"
    Write-Host $_.Exception.Message -ForegroundColor Red
    exit 1
}