setup.sh

#!/usr/bin/env bash
set -euo pipefail

# Usage:
#   ./setup.sh [workspace_dir]
# Example:
#   ./setup.sh ~/chars_ws

WORKSPACE_DIR="${1:-$HOME/chars_ws}"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPOS_FILE="$SCRIPT_DIR/chars-main.repos"

if ! command -v vcs >/dev/null 2>&1; then
  echo "Error: vcstool is not installed."
  echo "Install it with: sudo apt update && sudo apt install -y python3-vcstool"
  exit 1
fi

if ! command -v rosdep >/dev/null 2>&1; then
  echo "Error: rosdep is not installed."
  echo "Install it with: sudo apt update && sudo apt install -y python3-rosdep"
  exit 1
fi

if ! command -v colcon >/dev/null 2>&1; then
  echo "Warning: colcon is not installed. Build step instructions will still be shown."
fi

if [[ ! -f "$REPOS_FILE" ]]; then
  echo "Error: $REPOS_FILE not found."
  exit 1
fi

mkdir -p "$WORKSPACE_DIR/src"

echo "Importing repositories into $WORKSPACE_DIR ..."
vcs import "$WORKSPACE_DIR" < "$REPOS_FILE"

ROS_DISTRO_DEFAULT="${ROS_DISTRO:-humble}"
ROS_SETUP_FILE="/opt/ros/$ROS_DISTRO_DEFAULT/setup.bash"

if [[ -f "$ROS_SETUP_FILE" ]]; then
  # shellcheck disable=SC1090
  source "$ROS_SETUP_FILE"
else
  echo "Warning: $ROS_SETUP_FILE not found."
  echo "Set ROS_DISTRO to your distro and make sure ROS 2 is installed before building."
fi

if ! sudo rosdep init >/dev/null 2>&1; then
  echo "rosdep already initialized or init skipped."
fi

echo "Updating rosdep indexes ..."
rosdep update

echo "Installing ROS dependencies ..."
rosdep install --from-paths "$WORKSPACE_DIR/src" --ignore-src -r -y

echo
echo "Setup complete. Build with:"
echo "  cd $WORKSPACE_DIR"
echo "  colcon build --symlink-install"
echo
echo "Then source your workspace:"
echo "  source $WORKSPACE_DIR/install/setup.bash"