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

SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
PORT="${1:-5228}"

VENV_BIN="${SCRIPT_DIR}/venv/bin"
PYTHON="python3"
FLASK="flask"

if [[ -x "${VENV_BIN}/python" ]]; then
  PYTHON="${VENV_BIN}/python"
fi

if [[ -x "${VENV_BIN}/flask" ]]; then
  FLASK="${VENV_BIN}/flask"
fi

if [[ ! -x "${PYTHON}" ]]; then
  echo "Python not found. Create or activate a venv under ${SCRIPT_DIR}/venv first." >&2
  exit 1
fi

export PYTHONUNBUFFERED=1
export FLASK_ENV=development

if [[ -x "${FLASK}" ]]; then
  exec "${FLASK}" --app run:app run --host 0.0.0.0 --port "${PORT}" --debug
fi

exec "${PYTHON}" -m flask --app run:app run --host 0.0.0.0 --port "${PORT}" --debug