#!/bin/sh
set -eu

resolve_symlink() {
  _target="$1"
  if command -v readlink >/dev/null 2>&1 && readlink -f -- "$_target" >/dev/null 2>&1; then
    readlink -f -- "$_target"
  elif command -v python3 >/dev/null 2>&1; then
    python3 -c 'import os, sys; print(os.path.realpath(sys.argv[1]))' "$_target"
  else
    while [ -L "$_target" ]; do
      _dir=$(cd -P "$(dirname -- "$_target")" >/dev/null 2>&1 && pwd)
      _target=$(readlink "$_target")
      case "$_target" in
        /*) ;;
        *) _target="$_dir/$_target" ;;
      esac
    done
    echo "$_target"
  fi
}

if [ -e "$HOME/.profile" ]; then
  TARGET=$(resolve_symlink "$HOME/.profile")
  SKEL_DIR=$(dirname -- "$TARGET")
else
  SKEL_DIR=""
fi

REPO_ROOT=""
if [ -n "$SKEL_DIR" ] && cd -- "$SKEL_DIR" 2>/dev/null; then
  REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || true)
fi

if [ -z "$REPO_ROOT" ] || [ ! -f "$REPO_ROOT/install.sh" ]; then
  SCRIPT_DIR=$(dirname -- "$(resolve_symlink "$0")")
  if cd -- "$SCRIPT_DIR" 2>/dev/null; then
    REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || true)
  fi
  if [ -z "$REPO_ROOT" ] || [ ! -f "$REPO_ROOT/install.sh" ]; then
    echo "Error: Could not determine skel repository root." >&2
    exit 1
  fi
fi

cd -- "$REPO_ROOT"
git pull
./install.sh "$@"