install

#!/bin/sh

ruby_version="2.7.0"
python_version="3.8.1"
elixir_version="1.10.0"
nodenv_version="13.7.0"

if ! command -v brew >/dev/null; then
  echo "Installing Homebrew..."
  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
  eval "$(/opt/homebrew/bin/brew shellenv)"
else
  echo "Homebrew already installed"
fi

echo "Updating Homebrew formulae..."
brew update --force

echo "Installing prerequisites..."
if ! brew list -1 | grep -q "git"; then
  brew install git
fi

if [ ! -d "$HOME/.dotfiles" ]; then
  echo "Cloning dotfiles..."
  git clone "https://github.com/linkyndy/.dotfiles.git" "$HOME/.dotfiles"
else
  echo "Dotfiles already cloned"
fi

echo "Symlinking dotfiles..."
ln -sf "$HOME/.dotfiles/.zshrc" "$HOME"
ln -sf "$HOME/.dotfiles/.gemrc" "$HOME"
ln -sf "$HOME/.dotfiles/.gitconfig" "$HOME"
ln -sf "$HOME/.dotfiles/.Brewfile" "$HOME"
ln -sfF "$HOME/.dotfiles/.atom" "$HOME"

echo "Configuring macOS..."
. "$HOME/.dotfiles/macos"

echo "Installing Homebrew Bundle formulae..."
brew bundle --global

if [ ! $(apm list --installed --bare | sed '/^$/d' | wc -l) -eq $(cat "$HOME/.dotfiles/.atom/packages.txt" | wc -l) ]; then
  echo "Installing Atom packages..."
  apm install --packages-file "$HOME/.dotfiles/.atom/packages.txt"
else
  echo "Atom packages already installed"
fi

if ! rbenv versions | grep -q "$ruby_version"; then
  echo "Installing Ruby $ruby_version..."
  rbenv install -s "$ruby_version"
else
  echo "Ruby $ruby_version already installed"
fi

echo "Setting default Ruby..."
rbenv global "$ruby_version"

echo "Updating RubyGems..."
gem update --system

if ! gem list | grep -q "bundler"; then
  echo "Installing Bundler..."
  gem install bundler
else
  echo "Updating Bundler..."
  gem update bundler
fi

if ! pyenv versions | grep -q "$python_version"; then
  echo "Installing Python $python_version..."
  pyenv install -s "$python_version"
else
  echo "Python $python_version already installed"
fi

echo "Setting default Python..."
pyenv global "$python_version"

if ! exenv versions | grep -q "$elixir_version"; then
  echo "Installing Elixir $elixir_version..."
  exenv install "$elixir_version"
else
  echo "Elixir $elixir_version already installed"
fi

echo "Setting default Elixir..."
exenv global "$elixir_version"

if ! nodenv versions | grep -q "$nodenv_version"; then
  echo "Installing Node $nodenv_version..."
  nodenv install "$nodenv_version"
else
  echo "Node $nodenv_version already installed"
fi

echo "Setting default Node..."
nodenv global "$nodenv_version"

case "$SHELL" in
  */zsh) : ;;
  *)
    echo "Changing the shell to zsh..."
    shell_path="$(which zsh)"
    if ! grep "$shell_path" /etc/shells > /dev/null 2>&1; then
      sudo sh -c "echo $shell_path >> /etc/shells"
    fi
    sudo chsh -s "$shell_path" "$USER"
    ;;
esac

cowsay 'Mac is set up!'