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

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BACKEND_DIR="$ROOT_DIR/backend"
FRONTEND_DIR="$ROOT_DIR/frontend"

API_HOST="${API_HOST:-127.0.0.1}"
API_PORT="${API_PORT:-8000}"
FRONTEND_HOST="${FRONTEND_HOST:-0.0.0.0}"

pids=()

cleanup() {
  for pid in "${pids[@]}"; do
    kill "$pid" 2>/dev/null || true
  done
  wait 2>/dev/null || true
}

trap cleanup INT TERM EXIT

if [ ! -x "$BACKEND_DIR/.venv/bin/uvicorn" ]; then
  echo "Backend dependencies missing. Run:"
  echo "  cd backend && python -m venv .venv && .venv/bin/pip install -r requirements.txt"
  exit 1
fi

if [ ! -d "$FRONTEND_DIR/node_modules" ]; then
  echo "Frontend dependencies missing. Run:"
  echo "  cd frontend && npm install"
  exit 1
fi

echo "Starting backend on http://$API_HOST:$API_PORT"
(
  cd "$BACKEND_DIR"
  .venv/bin/uvicorn app.main:app --host "$API_HOST" --port "$API_PORT"
) &
pids+=("$!")

echo "Starting frontend"
(
  cd "$FRONTEND_DIR"
  npm run dev -- --host "$FRONTEND_HOST"
) &
pids+=("$!")

echo
echo "Prox Visualizer is starting."
echo "Backend:  http://$API_HOST:$API_PORT"
echo "Frontend: use the Network URL printed by Vite from another device."
echo "Stop both services with Ctrl+C."
echo

wait