dot

#!/usr/bin/env bash

######################################################
##    FUNCTIONS
######################################################

switch_to_homebrew_bash() {
  if ! fgrep -q '/usr/local/bin/bash' /etc/shells; then
    echo '/usr/local/bin/bash' | sudo tee -a /etc/shells;
    chsh -s /usr/local/bin/bash;
    e_note "Now using bash from Homebrew"
  fi;
}

symlink() {
  from="$1"
  to="$2"
  e_arrow "Linking '$from' to '$to'"
  rm -f "$to"
  ln -s "$from" "$to"
}

susymlink() {
  from="$1"
  to="$2"
  e_arrow "Linking '$from' to '$to'"
  sudo rm -f "$to"
  sudo ln -s "$from" "$to"
}

symlink_host_file() {
  e_header "Linking hosts file"

  if [ ! -L "/etc/hosts" ]; then
    e_arrow "Saving original file to /etc/hosts.orig"
    sudo cp -f /etc/hosts /etc/hosts.orig
  fi

  dotfiles="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

  if [ ! -f "$dotfiles/etc/hosts.local" ]; then
    cp "$dotfiles/etc/hosts" "$dotfiles/etc/hosts.local";
  fi

  susymlink "$dotfiles/etc/hosts.local" "/etc/hosts"
}

symlink_dotfiles() {
  dotfiles="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

  # Link `bin/` directory
  # It's a `.bin` because I don't like seeing it
  e_header "Symlinking custom ~/.bin directory"
  symlink "$dotfiles/bin" "$HOME/.bin"

  # Link dotfiles
  e_header "Symlinking dotfiles"
  find home -name '*.sh' | while read -r location; do
    file="${location##*/}"
    file="${file%.sh}"
    symlink "$dotfiles/$location" "$HOME/.$file"
  done

  # Vim config
  e_header "Symlinking VIM config"
  symlink "$dotfiles/vim" "$HOME/.vim"
  touch "$HOME/.vimlocal"
}

symlink_atom_config() {
  dotfiles="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

  e_header "Symlinking Atom config"
  for file in config.cson init.coffee keymap.cson snippets.cson styles.less; do
    symlink "$dotfiles/atom/$file" "$HOME/.atom/$file"
  done
}

######################################################
##    USAGE
######################################################

usage() {
  echo "Usage:" >&2
  echo "$0 [--dotfiles] [--atom] [--hosts] [--homebrew-bash]" >&2
  echo "" >&2
  echo "Options:" >&2
  echo "   -d | --dotfiles    Symlink dotfiles in home/ directory" >&2
  echo "   -a | --atom        Symlink Atom editor config files" >&2
  echo "   -h | --hosts       Create local hosts files and symlink it" >&2
  echo "   --homebrew-bash    Add bash from homebrew to shell login and switch to it" >&2
}

######################################################
##    PARAMETERS
######################################################

if [ $# -eq 0 ]; then
  usage;
  exit 100;
fi;

for i in "$@"
do
case $i in
    -d|--dotfiles)
      symlink_dotfiles;
    ;;
    -a|--atom)
      symlink_atom_config
    ;;
    -h|--hosts)
      symlink_host_file
    ;;
    --homebrew-bash)
      switch_to_homebrew_bash
    ;;
    *)
      usage;
      exit 100;
    ;;
esac
done


echo
e_success "Everything's ready"