use-java17.ps1

$ErrorActionPreference = "Stop"

# Resolve JDK 17 and Maven paths from environment or common defaults.
$jdk17Home = if ($env:JDK17_HOME) { $env:JDK17_HOME }
             elseif (Test-Path "C:\Program Files\Eclipse Adoptium\jdk-17*") {
                 (Get-ChildItem "C:\Program Files\Eclipse Adoptium\jdk-17*" -Directory | Select-Object -First 1).FullName
             }
             elseif (Test-Path "C:\Program Files\Java\jdk-17*") {
                 (Get-ChildItem "C:\Program Files\Java\jdk-17*" -Directory | Select-Object -First 1).FullName
             }
             elseif (Test-Path "C:\Program Files\ojdkbuild\java-17*") {
                 (Get-ChildItem "C:\Program Files\ojdkbuild\java-17*" -Directory | Select-Object -First 1).FullName
             }
             else { $null }

$mavenHome = if ($env:MAVEN_HOME) { $env:MAVEN_HOME }
             elseif (Test-Path "C:\Program Files\Apache\Maven\*") {
                 (Get-ChildItem "C:\Program Files\Apache\Maven\*" -Directory | Select-Object -First 1).FullName
             }
             else {
                 # Try to find mvn on PATH
                 $mvnCmd = Get-Command mvn -ErrorAction SilentlyContinue
                 if ($mvnCmd) { Split-Path (Split-Path $mvnCmd.Source -Parent) -Parent } else { $null }
             }

if (-not $jdk17Home) {
    throw "JDK 17 not found. Set JDK17_HOME environment variable or install JDK 17."
}

if (-not $mavenHome) {
    throw "Maven not found. Set MAVEN_HOME environment variable or install Maven."
}

$env:JAVA_HOME = $jdk17Home
$env:MAVEN_HOME = $mavenHome

$jdkBin = Join-Path $jdk17Home "bin"
$mavenBin = Join-Path $mavenHome "bin"

if (($env:Path -split ";") -notcontains $jdkBin) {
    $env:Path = "$jdkBin;$env:Path"
}

if (($env:Path -split ";") -notcontains $mavenBin) {
    $env:Path = "$mavenBin;$env:Path"
}

Write-Host "JAVA_HOME  = $env:JAVA_HOME" -ForegroundColor Green
Write-Host "MAVEN_HOME = $env:MAVEN_HOME" -ForegroundColor Green
Write-Host ""

java -version
mvn -v