#!/bin/bash

# Install rbenv and ruby-build
echo "Installing rbenv and ruby-build..."
if ! command -v git &> /dev/null; then
  echo "git is not installed. Please install git first."
  exit 1
fi

if ! command -v curl &> /dev/null; then
  echo "curl is not installed. Please install curl first."
  exit 1
fi

if [ ! -d "$HOME/.rbenv" ]; then
  git clone https://github.com/rbenv/rbenv.git ~/.rbenv
  cd ~/.rbenv && src/configure && make -C src
  echo "export PATH=\"\$HOME/.rbenv/bin:\$PATH\"" >> ~/.bashrc
  echo "eval \"\$(rbenv init -)\"" >> ~/.bashrc
  # shellcheck source=/dev/null
  source ~/.bashrc
else
  echo "rbenv is already installed."
fi

if [ ! -d "$HOME/.rbenv/plugins/ruby-build" ]; then
  git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
  echo "export PATH=\"\$HOME/.rbenv/plugins/ruby-build/bin:\$PATH\"" >> ~/.bashrc
  # shellcheck source=/dev/null
  source ~/.bashrc
else
  echo "ruby-build is already installed."
fi

# Get the latest 5 Ruby versions
echo "Fetching latest Ruby versions..."
VERSIONS=$(rbenv install -l 2>/dev/null | grep -E "^\s*\d+\.\d+\.\d+$" | tail -n 5)

# Present the user with options
echo "Please select a Ruby version to install:"
select VERSION in $VERSIONS; do
  if [[ -n "$VERSION" ]]; then
    echo "You selected $VERSION. Installing..."
    rbenv install "$VERSION"
    rbenv global "$VERSION"
    echo "Ruby $VERSION installed and set as global version."
    break
  else
    echo "Invalid selection. Please try again."
  fi
done

echo "Done!"