feat: add powershell install script

install.ps1

@@ -0,0 +1,76 @@
+# 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."