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

ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
BACKEND_URL=""
DEVICE_ARGS=()

usage() {
  cat <<EOF
Usage:
  $0 [--backend-url http://host:port] [flutter run args...]

Examples:
  $0
  $0 --backend-url http://192.168.1.100:5775
  $0 --backend-url http://10.0.2.2:5775 -d emulator-5554
EOF
}

while [[ $# -gt 0 ]]; do
  case "$1" in
    --backend-url)
      BACKEND_URL="$2"
      shift 2
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      DEVICE_ARGS+=("$1")
      shift
      ;;
  esac
done

cd "$ROOT_DIR"

if [[ -n "$BACKEND_URL" ]]; then
  flutter run --dart-define="BACKEND_URL=$BACKEND_URL" "${DEVICE_ARGS[@]}"
else
  flutter run "${DEVICE_ARGS[@]}"
fi