install.ps1

# Define constants and variables
$zvmBaseUrl = "https://github.com/hendriknielaender/zvm/releases/latest/download"
$zvmInstallDir = "$HOME\.zm"
$architecture = if ([Environment]::Is64BitOperatingSystem) { "x86_64" } else { "x86" }
$zvmFileName = "$architecture-windows-zvm.zip"
$zvmExeFileName = "$architecture-windows-zvm.exe"
$zvmZipPath = "$zvmInstallDir\$zvmFileName"
$zvmExePath = "$zvmInstallDir\$zvmExeFileName"
$zvmRenamedExePath = "$zvmInstallDir\zvm.exe"
$zvmUrl = "$zvmBaseUrl/$zvmFileName"

# Create the installation directory if it doesn't exist
if (-not (Test-Path -Path $zvmInstallDir)) {
    Write-Output "Creating installation directory at $zvmInstallDir..."
    New-Item -Path $zvmInstallDir -ItemType Directory | Out-Null
}

# Download the latest release
Write-Output "Downloading zvm from $zvmUrl..."
try {
    Invoke-WebRequest -Uri $zvmUrl -OutFile $zvmZipPath
    Write-Output "Download complete."
} catch {
    Write-Output "Error: Failed to download zvm. Please check your internet connection and URL."
    exit 1
}

# Unzip the downloaded file
Write-Output "Extracting zvm..."
try {
    Expand-Archive -Path $zvmZipPath -DestinationPath $zvmInstallDir -Force
    Write-Output "Extraction complete."
} catch {
    Write-Output "Error: Failed to extract $zvmFileName. Please check the file and try again."
    Remove-Item -Path $zvmZipPath
    exit 1
}

# Remove the downloaded zip file
Remove-Item -Path $zvmZipPath

# Check if the existing zvm.exe exists and remove it
if (Test-Path -Path $zvmRenamedExePath) {
    Remove-Item -Path $zvmRenamedExePath -Force
    Write-Output "Removed existing zvm.exe."
}

# Rename the new executable
if (Test-Path -Path $zvmExePath) {
    Rename-Item -Path $zvmExePath -NewName "zvm.exe"
    Write-Output "Renamed $zvmExeFileName to zvm.exe"

    try {
        # Set the user environment variable
        Write-Output "Setting ZVM_HOME environment variable..."
        [System.Environment]::SetEnvironmentVariable("ZVM_HOME", $zvmInstallDir, [System.EnvironmentVariableTarget]::User)
        Write-Output "ZVM_HOME has been set to $zvmInstallDir for the current user."

        # Add the zvm directory to the user PATH
        $currentPath = [System.Environment]::GetEnvironmentVariable("Path", [System.EnvironmentVariableTarget]::User)
        if ($currentPath -notlike "*$zvmInstallDir*") {
            $newPath = "$currentPath;$zvmInstallDir"
            [System.Environment]::SetEnvironmentVariable("Path", $newPath, [System.EnvironmentVariableTarget]::User)
            Write-Output "Added $zvmInstallDir to PATH for the current user."
        } else {
            Write-Output "$zvmInstallDir is already in the user PATH."
        }
    } catch {
        Write-Output "Error: Unable to set environment variable or update PATH. Please run the script as an administrator."
    }
} else {
    Write-Output "Error: zvm executable not found after extraction. Please check the downloaded files."
    exit 1
}

Write-Output "Installation complete. Please restart your terminal or computer to apply changes."