#!/bin/sh

SYNC_FILES=${SYNC_FILES:-yes}
INSTALL_PKGS=${INSTALL_PKGS:-yes}
RUN_CMDS=${RUN_CMDS:-yes}
PULL_GIT=${PULL_GIT:-yes}
TIME_TRACK=${TIME_TRACK:-no}

ARGS="$@"

. ./lib/lib.sh

set -e # Exit on error

_install_pkgs() {
  run $SYS_SUDO $PM_COMMAND $PM_UPDATE $PM_NOCONFIRM
  _APPLICATIONS=""
  while read -r pkg; do
    [ -z "$pkg" ] && continue
    [ "$(echo "$pkg" | cut -c1)" = "#" ] && continue
    _APPLICATIONS="$_APPLICATIONS $pkg"
  done <"$1"
  run $SYS_SUDO $PM_COMMAND $PM_INSTALL $PM_NOCONFIRM $_APPLICATIONS
}

_sync_files() {
  #copy all files and folders from ./files to /
  #except for ./files/%HOME

  for item in ./files/*; do
    [ "$item" = "./files/%HOME" ] && continue
    # e.g. ./files/etc -> /etc
    run mkdir -p "$SYS_ROOT/$(basename "${item#./files/}")"
    run $SYS_SUDO cp -r "$item/." "$SYS_ROOT/${item#./files/}"
  done
}

_run_cmds() {
  while read -r cmd; do
    if [ "$(echo "$cmd" | cut -c1)" = "^" ]; then
      run $SYS_SUDO sh -c "$(echo "$cmd" | cut -c2-)"
    else
      run sh -c "$cmd"
    fi
  done <./command.list
}

ARGS="$@"
_skip_next_arg="n"
arg_handler() {
  for arg in $ARGS; do
    bool $_skip_next_arg && continue

    case $arg in
      +files) SYNC_FILES=yes ;;
      -files) SYNC_FILES=no ;;
      +pkgs) INSTALL_PKGS=yes ;;
      -pkgs) INSTALL_PKGS=no ;;
      +cmds) RUN_CMDS=yes ;;
      -cmds) RUN_CMDS=no ;;
      +git) PULL_GIT=yes ;;
      -git) PULL_GIT=no ;;
      +) SYNC_FILES=yes; INSTALL_PKGS=yes; RUN_CMDS=yes; PULL_GIT=yes ;;
      -) SYNC_FILES=no; INSTALL_PKGS=no; RUN_CMDS=no; PULL_GIT=no ;;
      +*)
        echo "# Unknown argument: $arg"
        exit 1
      ;;
      -*) 
        echo "# Unknown argument: $arg"
        exit 1
      ;;
    esac
  done
}

main() {
  arg_handler  

  echo "# hook: PULL_GIT"
  bool "$PULL_GIT" && run git pull

  echo "# hook: SYNC_FILES (/)"
  bool "$SYNC_FILES" && run cp -a "./files/%HOME/." "$HOME"

  echo "# hook: SYNC_FILES"
  bool "$SYNC_FILES" && _sync_files
  
  echo "# hook: INSTALL_PKGS"
  bool "$INSTALL_PKGS" && _install_pkgs ./package.list

  echo "# hook: RUN_CMDS"
  bool "$RUN_CMDS" && _run_cmds
  
  return 0
}

echo "# exec: start."
if bool $TIME_TRACK; then
  time main "$@"
else 
  main "$@"
fi
echo "# exec: done."