# CONSTANTS

INSTALL_URL='https://git.artcode.re/miaou/miaou-bash/raw/branch/main/install.sh'

# FUNCTIONS

function container_upgrade {
  echo "MIAOU_BASH_MODE=$MIAOU_BASH_MODE"
  . "$MIAOU_BASH_DIR"/lib/container-upgrade.bash
}

function development_upgrade {
  [[ "$MIAOU_BASH_MODE_OWNER" != "$USER" ]] &&
    >&2 echo "ERROR: development mode owned by: $MIAOU_BASH_MODE_OWNER" &&
    builtin exit 11

  cd "$MIAOU_BASH_DIR"/ || return 12 # should not happen
  [[ -n "$(git status --porcelain)" ]] &&
    >&2 echo 'ERROR: repository has uncommited changes!' &&
    builtin exit 12

  local git_output
  git_output=$(git pull 2>&1)
  if echo "$git_output" | grep -q 'up to date'; then
    echo already up-to-date
  else
    sudo_root
    sudo miaou lib/initiate.bash
  fi
}

function system_upgrade {
  local current latest
  current=$("$MIAOU_BASH_DIR"/bin/miaou-bash --version)
  latest=$("$MIAOU_BASH_DIR"/tools/wget_semver artcode miaou/miaou-bash)
  if [[ "$current" == "$latest" ]]; then
    echo "up-to-date version: $current"
  else
    echo "new version available: $latest"
    #TODO: should down new file self-upgrade.bash, then call it again
    perform_upgrade
  fi
}

function perform_upgrade {
  sudo_root
  local backup="$MIAOU_BASH_DIR".before_upgrade
  sudo mv "$MIAOU_BASH_DIR" "$backup"
  curl -s --output /tmp/miaou-bash-install.sh "$INSTALL_URL"

  # shellcheck disable=SC1091
  if source /tmp/miaou-bash-install.sh upgrade; then
    if [[ $(find "$backup"/hooks.d -maxdepth 1 -type f -not -name '.*' | wc -l) -gt 0 ]]; then
      sudo mv "$backup"/hooks.d/* "$MIAOU_BASH_DIR"/hooks.d/
      sudo miaou-bash "$MIAOU_BASH_DIR"/lib/initiate.bash
    fi
    sudo rm -rf "$backup"
  else
    echo "ERROR: trouble during self-upgrade: revert back"
    sudo rm -rf "$MIAOU_BASH_DIR"
    sudo mv "$backup" "$MIAOU_BASH_DIR"
    builtin exit 99
  fi
}

# MAIN

source "$MIAOU_BASH_DIR"/lib/functions.bash
fetch_mode
case "$MIAOU_BASH_MODE" in
hosted) container_upgrade ;;
development) development_upgrade ;;
system) system_upgrade ;;
esac