setup-mac-aem-developer-workspace.sh

#!/bin/bash
# setup.sh - Installs Homebrew, Java 11, Maven, nvm, and Node.js (LTS) on macOS (Apple Silicon)
# This script checks for existing installations and environment variable setups before proceeding.
#
# Usage:
#   chmod +x setup.sh
#   ./setup.sh
# or bash setup.sh

set -e  # Exit on error

LOGFILE="setup.log"
exec > >(tee -a "$LOGFILE") 2>&1

echo "###############################"
echo "Installation Script Started at $(date)"
echo "###############################"

### 1. Check & Install Homebrew
if command -v brew >/dev/null; then
  echo "[INFO] Homebrew is already installed. Version: $(brew --version)"
else
  echo "[INFO] Homebrew not found. Installing Homebrew..."
  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
  # For Apple Silicon, add Homebrew to the PATH in your profile.
  echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
  eval "$(/opt/homebrew/bin/brew shellenv)"
fi

### 2. Check & Install OpenJDK 11
if /usr/libexec/java_home -v 11 >/dev/null 2>&1; then
  echo "[INFO] Java 11 already installed: $(/usr/libexec/java_home -v 11)"
else
  echo "[INFO] Installing OpenJDK 11..."
  brew install openjdk@11
  echo "[INFO] Creating symlink for Java 11 to match macOS JDK layout..."
  sudo ln -sfn /opt/homebrew/opt/openjdk@11/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-11.jdk
fi

### 3. Configure Java Environment Variables in ~/.zshrc
if grep -q "export JAVA_HOME=" ~/.zshrc; then
  echo "[INFO] JAVA_HOME is already set in ~/.zshrc"
else
  echo "[INFO] Appending Java environment variables to ~/.zshrc..."
  {
    echo ""
    echo "# Java 11 settings"
    echo 'export PATH="/opt/homebrew/opt/openjdk@11/bin:$PATH"'
    echo 'export JAVA_HOME=$(/usr/libexec/java_home -v 11)'
  } >> ~/.zshrc
fi

echo "[INFO] Verifying Java Installation:"
java -version

### 4. Check & Install Maven
if command -v mvn >/dev/null; then
  echo "[INFO] Maven is already installed. Version info:"
  mvn -version | head -n 1
else
  echo "[INFO] Installing Maven..."
  brew install maven
fi

# Determine Maven version from Homebrew info
MAVEN_VERSION=$(brew info maven | awk 'NR==1{print $3}')
if [ -z "$MAVEN_VERSION" ]; then
  echo "[WARN] Could not determine Maven version automatically."
  MAVEN_VERSION="unknown_version"
else
  echo "[INFO] Detected Maven version: $MAVEN_VERSION"
fi

### 5. Configure Maven Environment Variables in ~/.zshrc
if grep -q "export M2_HOME=" ~/.zshrc; then
  echo "[INFO] Maven (M2_HOME) variables are already set in ~/.zshrc"
else
  echo "[INFO] Appending Maven environment variables to ~/.zshrc..."
  {
    echo ""
    echo "# Maven settings"
    echo "export M2_HOME=\"/opt/homebrew/Cellar/maven/$MAVEN_VERSION\""
    echo 'export MAVEN_HOME="$M2_HOME"'
    echo 'export PATH="$M2_HOME/bin:$PATH"'
  } >> ~/.zshrc
fi

echo "[INFO] Verifying Maven Installation:"
mvn -version

### 6. Check & Install nvm (Node Version Manager)
if [ -d "$HOME/.nvm" ]; then
  echo "[INFO] nvm is already installed."
else
  echo "[INFO] Installing nvm (Node Version Manager)..."
  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
fi

### 7. Configure nvm in ~/.zshrc
if grep -q "export NVM_DIR=" ~/.zshrc; then
  echo "[INFO] nvm initialization already present in ~/.zshrc"
else
  echo "[INFO] Appending nvm initialization to ~/.zshrc..."
  {
    echo ""
    echo "# nvm settings"
    echo 'export NVM_DIR="$HOME/.nvm"'
    echo '[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm'
    echo '[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion'
  } >> ~/.zshrc
fi

# Load nvm for the current script session
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"

### 8. Check & Install Node.js (LTS) via nvm
if command -v node >/dev/null; then
  echo "[INFO] Node is already installed. Version: $(node -v)"
else
  echo "[INFO] Installing Node.js (LTS) using nvm..."
  nvm install --lts
  nvm use --lts
fi

echo "[INFO] Verifying Node and npm Installation:"
node -v
npm -v

echo "###############################"
echo "Installation Script Completed at $(date)"
echo "Please restart your terminal or run 'source ~/.zshrc' to apply all environment variable changes."
echo "Log file: $LOGFILE"