install

#!/usr/bin/env bash

path-abs() {
  cd -P "$(dirname "${1}")" && pwd
}

path-read-link() {
  case "$(uname)" in
    "Darwin")
      readlink -n "${1}"
      ;;
    "Linux")
      readlink --canonicalize-existing --no-newline "${1}"
      ;;
    *)
      readlink -n "${1}"
      ;;
  esac
}

path-real() {
  local SOURCE="${1}"
  while [[ -L ${SOURCE} ]]; do
    SOURCE="$(path-read-link "${SOURCE}")"
    [[ ${SOURCE} != /* ]] && SOURCE="$(path-abs "${SOURCE}")/${SOURCE}"
  done
  path-abs "${SOURCE}"
}

DIR="$(path-real "${BASH_SOURCE[0]}")"

echo "********************************************************"
echo "**************** Dotfiles Installation ****************"
echo "  dotfiles folder: ${DIR}"

if [ ! -f ~/.dotfiles.bash ]; then
  echo "  creating symlink at home folder"
  ln -s "${DIR}/root.bash" ~/.dotfiles.bash
else
  echo "  syslink exists"
fi

BASH_FILE=~/.bashrc
[[ ! -f ${BASH_FILE} ]] && BASH_FILE=~/.bash_profile
[[ ! -f ${BASH_FILE} ]] && touch "${BASH_FILE}"
echo "  bash file to be used: ${BASH_FILE}"

SOURCE_LINE='[[ -r ~/.dotfiles.bash ]] && [[ -f ~/.dotfiles.bash ]] && source ~/.dotfiles.bash'
if grep --fixed-strings --quiet "${SOURCE_LINE}" "${BASH_FILE}"; then
  echo "  dotfiles sourcing is already included in ${BASH_FILE}"
else
  echo "  add dotfiles sourcing in ${BASH_FILE}"
  echo "${SOURCE_LINE}" >>"${BASH_FILE}"
fi

echo "********************************************************"
echo "********************************************************"