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

source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/env.sh"

PID_FILE="${PID_DIR}/backend.pid"
LOG_FILE="${LOG_DIR}/backend.log"

if is_running "${PID_FILE}"; then
  echo "Backend is already running (pid $(cat "${PID_FILE}"))."
  echo "URL: http://${HOST_IP}:${BACKEND_PORT}"
  exit 0
fi

rm -f "${PID_FILE}"

echo "Starting backend..."
echo "Log: ${LOG_FILE}"

setsid bash -c '
  cd "$0" || exit 1
  exec env \
    GATEWAY_CORS_ORIGINS="$1" \
    PYTHONPATH=. \
    uv run uvicorn app.gateway.app:app \
      --host "$2" \
      --port "$3" \
      --reload
' "${BACKEND_DIR}" "${GATEWAY_CORS_ORIGINS}" "${BACKEND_HOST}" "${BACKEND_PORT}" \
  >"${LOG_FILE}" 2>&1 &

echo "$!" >"${PID_FILE}"
echo "Backend started (pid $(cat "${PID_FILE}"))."
echo "URL: http://${HOST_IP}:${BACKEND_PORT}"