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

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BACKEND_DIR="${ROOT_DIR}/backend"
FRONTEND_DIR="${ROOT_DIR}/frontend"
BACKEND_VENV="${BACKEND_DIR}/.venv"
PYTHON_BIN="${PYTHON_BIN:-python3}"
ENV_FILE="${BACKEND_DIR}/.env"
ENV_EXAMPLE_FILE="${BACKEND_DIR}/.env.dev.example"
BACKEND_LOG="/tmp/routeros-next-backend.log"

cleanup() {
  if [[ -n "${BACKEND_PID:-}" ]] && kill -0 "${BACKEND_PID}" 2>/dev/null; then
    kill "${BACKEND_PID}" 2>/dev/null || true
  fi
}
trap cleanup EXIT INT TERM

read_env_value() {
  local key="$1"
  local file="$2"
  if [[ -f "$file" ]]; then
    local line
    line=$(grep -E "^${key}=" "$file" | tail -n 1 || true)
    if [[ -n "$line" ]]; then
      echo "${line#*=}"
      return 0
    fi
  fi
  return 1
}

if [[ ! -d "${BACKEND_VENV}" ]]; then
  "${PYTHON_BIN}" -m venv "${BACKEND_VENV}"
fi

# shellcheck disable=SC1091
source "${BACKEND_VENV}/bin/activate"
python -m pip install --upgrade pip
python -m pip install -r "${BACKEND_DIR}/requirements.txt"

if [[ ! -f "${ENV_FILE}" ]] && [[ -f "${ENV_EXAMPLE_FILE}" ]]; then
  cp "${ENV_EXAMPLE_FILE}" "${ENV_FILE}"
fi

DEFAULT_ADMIN_USERNAME="$(read_env_value DEFAULT_ADMIN_USERNAME "${ENV_FILE}" || read_env_value DEFAULT_ADMIN_USERNAME "${ENV_EXAMPLE_FILE}" || echo admin)"
DEFAULT_ADMIN_PASSWORD="$(read_env_value DEFAULT_ADMIN_PASSWORD "${ENV_FILE}" || read_env_value DEFAULT_ADMIN_PASSWORD "${ENV_EXAMPLE_FILE}" || echo admin)"

cd "${BACKEND_DIR}"
PYTHONPATH="${BACKEND_DIR}" uvicorn app.main:app --reload --reload-dir app --host 127.0.0.1 --port 8000 > "${BACKEND_LOG}" 2>&1 &
BACKEND_PID=$!

for _ in $(seq 1 30); do
  if python - <<'PY'
import sys
from urllib.request import urlopen
try:
    with urlopen('http://127.0.0.1:8000/api/health', timeout=1) as response:
        sys.exit(0 if response.status == 200 else 1)
except Exception:
    sys.exit(1)
PY
  then
    break
  fi
  sleep 1
done

if ! python - <<'PY'
import sys
from urllib.request import urlopen
try:
    with urlopen('http://127.0.0.1:8000/api/health', timeout=1) as response:
        sys.exit(0 if response.status == 200 else 1)
except Exception:
    sys.exit(1)
PY
then
  echo "Backend failed to become ready. Log: ${BACKEND_LOG}"
  tail -n 100 "${BACKEND_LOG}" || true
  exit 1
fi

echo "Backend: http://127.0.0.1:8000"
echo "API docs: http://127.0.0.1:8000/docs"
echo "Frontend: http://127.0.0.1:4200"
echo "Default login: ${DEFAULT_ADMIN_USERNAME} / ${DEFAULT_ADMIN_PASSWORD}"

cd "${FRONTEND_DIR}"
if [[ ! -d node_modules ]]; then
  npm install
fi

npm run start