#!/bin/bash

  #

  # Usage:
  #   source activate.sh
  #

  # Required:

  #   1) ./.venv (Python venv)

  #
  
  # Must be sourced
  if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
    echo "ERROR: Please source this script: source activate.sh" >&2
    exit 1
  fi
  
  PROJECT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
  

  # 1) venv (required)

  VENV_ACTIVATE="${PROJECT_ROOT}/.venv/bin/activate"
  if [[ -f "${VENV_ACTIVATE}" ]]; then
    # shellcheck disable=SC1090
    source "${VENV_ACTIVATE}"
    ENV_KIND="venv"
  else

    echo "ERROR: No .venv found at ${VENV_ACTIVATE}" >&2
    echo "  - Create venv: ./scripts/create_venv.sh" >&2
    return 1

  fi

  
  # 如果需要加载 .env 中的环境变量

  ENV_FILE="${PROJECT_ROOT}/.env"
  if [ -f "${ENV_FILE}" ]; then

      set -a  # 自动导出所有变量

      # NOTE: This loader tolerates comments/blank lines and strips inline comments.
      source <(grep -v '^#' "${ENV_FILE}" | grep -v '^$' | sed 's/#.*$//' | sed 's/\r$//')

      set +a  # 关闭自动导出
  fi
  

  echo "Environment activated (${ENV_KIND}): ${VIRTUAL_ENV:-${CONDA_DEFAULT_ENV:-unknown}}"