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#!/usr/bin/env bash

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

switch_to_homebrew_bash() {
  if ! fgrep -q '/opt/homebrew/bin/bash' /etc/shells; then
    echo '/opt/homebrew/bin/bash' | sudo tee -a /etc/shells;
    chsh -s /opt/homebrew/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 dotfiles
  e_header "Symlinking dotfiles"

  # Symlink dirs from ./home/folders to ~/.folder
  find home -mindepth 1 -type d | while read -r location; do
    file="${location##*/}"
    symlink "$dotfiles/$location" "$HOME/.$file"
  done

  # Symlink files
  # from ./home/config.sh to ~/.config
  # from ./home/config.ext to ~/.config.ext
  find home -maxdepth 1 -not -type d | 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"

  # .env
  e_header "Creating ~/.env file"
  if [ ! -f "$HOME/.env" ]; then
    e_arrow "Copying '$dotfiles/etc/env.example' to '$HOME/.env'"
    e_warning "~/.env is currently empty, add the necessary values"
    cp "$dotfiles/etc/env.example" "$HOME/.env";
  else
    e_note "~/.env already exists"
  fi
}

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

  e_header "Symlinking Sublime Text config"

  symlink "$dotfiles/macos/Preferences.sublime-settings" "$HOME/Library/Application Support/Sublime Text/Packages/User/Preferences.sublime-settings"

  e_note "Make sure you install the theme https://github.com/mauroreisvieira/github-sublime-theme"
}

setup_php() {
  dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/dev/php"
  (cd $dir && composer install)
  e_warning "Add the following line to your php.ini configuration"
  echo
  echo "  auto_prepend_file = $dir/prepend.php"
  echo
}


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

usage() {
  echo "Usage:" >&2
  echo "$0 [--dotfiles] [--sublime] [--hosts] [--homebrew-bash] [--php]" >&2
  echo "" >&2
  echo "Options:" >&2
  echo "   -d | --dotfiles    Symlink dotfiles in home/ directory" >&2
  echo "   -h | --hosts       Create local hosts files and symlink it" >&2
  echo "   --php              Setup php prepended file" >&2
  echo "   --sublime          Symlink Sublime Text preferences" >&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;
    ;;
    --sublime)
      symlink_sublime;
    ;;
    --php)
      setup_php;
    ;;
    -h|--hosts)
      symlink_host_file
    ;;
    --homebrew-bash)
      switch_to_homebrew_bash
    ;;
    *)
      usage;
      exit 100;
    ;;
esac
done


echo
e_success "Everything's ready"