install_java17.ps1

# PowerShell Script to Install Java 17 and Configure Environment Variables
# Run this script as Administrator

Write-Host "========================================" -ForegroundColor Cyan
Write-Host "Java 17 Installation Script" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan
Write-Host ""

# Check if running as Administrator
$isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

if (-not $isAdmin) {
    Write-Host "ERROR: This script must be run as Administrator!" -ForegroundColor Red
    Write-Host "Right-click PowerShell and select 'Run as Administrator'" -ForegroundColor Yellow
    pause
    exit 1
}

# Define download URL and paths
$jdkUrl = "https://api.adoptium.net/v3/binary/latest/17/ga/windows/x64/jdk/hotspot/normal/eclipse"
$downloadPath = "$env:TEMP\jdk17-installer.msi"
$installPath = "C:\Program Files\Eclipse Adoptium\jdk-17"

Write-Host "Step 1: Downloading Java 17 JDK..." -ForegroundColor Green
try {
    # Download JDK installer
    Invoke-WebRequest -Uri $jdkUrl -OutFile $downloadPath -UseBasicParsing
    Write-Host "Download completed successfully!" -ForegroundColor Green
} catch {
    Write-Host "ERROR: Failed to download Java 17" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
    pause
    exit 1
}

Write-Host ""
Write-Host "Step 2: Installing Java 17..." -ForegroundColor Green
Write-Host "This may take a few minutes. Please wait..." -ForegroundColor Yellow

try {
    # Install JDK silently
    $installArgs = @(
        "/i",
        "`"$downloadPath`"",
        "/quiet",
        "/norestart",
        "ADDLOCAL=FeatureMain,FeatureEnvironment,FeatureJarFileRunWith,FeatureJavaHome",
        "INSTALLDIR=`"$installPath`""
    )
    
    $process = Start-Process -FilePath "msiexec.exe" -ArgumentList $installArgs -Wait -PassThru
    
    if ($process.ExitCode -eq 0) {
        Write-Host "Java 17 installed successfully!" -ForegroundColor Green
    } else {
        Write-Host "WARNING: Installation completed with exit code: $($process.ExitCode)" -ForegroundColor Yellow
    }
} catch {
    Write-Host "ERROR: Installation failed" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
    pause
    exit 1
}

# Find the actual JDK installation directory
Write-Host ""
Write-Host "Step 3: Locating Java installation..." -ForegroundColor Green

$javaHomePath = $null
$possiblePaths = @(
    "C:\Program Files\Eclipse Adoptium\jdk-17*",
    "C:\Program Files\Java\jdk-17*",
    "C:\Program Files\Temurin\jdk-17*"
)

foreach ($path in $possiblePaths) {
    $found = Get-ChildItem -Path $path -Directory -ErrorAction SilentlyContinue | Select-Object -First 1
    if ($found) {
        $javaHomePath = $found.FullName
        break
    }
}

if (-not $javaHomePath) {
    Write-Host "ERROR: Could not find Java installation directory" -ForegroundColor Red
    Write-Host "Please check C:\Program Files\ for Java installation" -ForegroundColor Yellow
    pause
    exit 1
}

Write-Host "Found Java at: $javaHomePath" -ForegroundColor Green

# Set JAVA_HOME environment variable
Write-Host ""
Write-Host "Step 4: Setting JAVA_HOME environment variable..." -ForegroundColor Green

try {
    [System.Environment]::SetEnvironmentVariable("JAVA_HOME", $javaHomePath, [System.EnvironmentVariableTarget]::Machine)
    Write-Host "JAVA_HOME set to: $javaHomePath" -ForegroundColor Green
} catch {
    Write-Host "ERROR: Failed to set JAVA_HOME" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
}

# Add Java to PATH
Write-Host ""
Write-Host "Step 5: Adding Java to PATH..." -ForegroundColor Green

try {
    $currentPath = [System.Environment]::GetEnvironmentVariable("Path", [System.EnvironmentVariableTarget]::Machine)
    $javaBinPath = "$javaHomePath\bin"
    
    # Check if Java bin is already in PATH
    if ($currentPath -notlike "*$javaBinPath*") {
        $newPath = "$currentPath;$javaBinPath"
        [System.Environment]::SetEnvironmentVariable("Path", $newPath, [System.EnvironmentVariableTarget]::Machine)
        Write-Host "Java bin added to PATH" -ForegroundColor Green
    } else {
        Write-Host "Java bin already in PATH" -ForegroundColor Yellow
    }
} catch {
    Write-Host "ERROR: Failed to update PATH" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
}

# Clean up installer
Write-Host ""
Write-Host "Step 6: Cleaning up..." -ForegroundColor Green
Remove-Item -Path $downloadPath -Force -ErrorAction SilentlyContinue

# Refresh environment variables for current session
Write-Host ""
Write-Host "Step 7: Refreshing environment variables..." -ForegroundColor Green
$env:JAVA_HOME = $javaHomePath
$env:Path = [System.Environment]::GetEnvironmentVariable("Path", [System.EnvironmentVariableTarget]::Machine)

Write-Host ""
Write-Host "========================================" -ForegroundColor Cyan
Write-Host "Installation Complete!" -ForegroundColor Green
Write-Host "========================================" -ForegroundColor Cyan
Write-Host ""

# Verify installation
Write-Host "Verifying installation..." -ForegroundColor Yellow
Write-Host ""

try {
    $javaVersion = & java -version 2>&1
    Write-Host "Java Version:" -ForegroundColor Cyan
    Write-Host $javaVersion
    Write-Host ""
    
    Write-Host "JAVA_HOME: $env:JAVA_HOME" -ForegroundColor Cyan
    Write-Host ""
    
    Write-Host "SUCCESS: Java 17 is installed and configured!" -ForegroundColor Green
    Write-Host ""
    Write-Host "IMPORTANT: Close and reopen your terminal/PowerShell for changes to take effect." -ForegroundColor Yellow
} catch {
    Write-Host "WARNING: Could not verify Java installation" -ForegroundColor Yellow
    Write-Host "Please close and reopen your terminal, then run: java -version" -ForegroundColor Yellow
}

Write-Host ""
Write-Host "Press any key to exit..." -ForegroundColor Cyan
pause