//积分充值
module.exports = {
  main: async (event) => {
    let { data = {}, userInfo, util } = event;
    let { db, _ } = util;
    const { order_id } = data;

    if (!order_id) {
      return { code: -1, msg: '缺少订单ID' };
    }

    // 查订单
    const orderRes = await db.collection('vk-pay-orders').doc(order_id).get();
    if (!orderRes.data.length) {
      return { code: -1, msg: '订单不存在' };
    }

    const order = orderRes.data[0];
    if (order.status !== 1) {
      return { code: -1, msg: '订单未支付' };
    }

    // 解析充值积分数量
    const attachedData = JSON.parse(order.attached_data || '{}');
    const points = attachedData.points;
    if (!points) {
      return { code: -1, msg: '订单数据异常' };
    }

    // 增加余额
    await db.collection('jjx-user-points').doc(userInfo.uid).update({
      balance: _.inc(points),
      total_earned: _.inc(points),
      update_time: new Date()
    });

    // 查最新余额
    const userRes = await db.collection('jjx-user-points').doc(userInfo.uid).get();
    const balance = userRes.data[0].balance;

    // 记录流水
    await db.collection('jjx-points-log').add({
      user_id: userInfo.uid,
      type: 'earn',
      amount: points,
      balance_after: balance,
      reason: '积分充值（' + (order.total_fee / 100) + '元）',
      biz_type: 'recharge',
      biz_id: order_id,
      _add_time: new Date()
    });

    return { code: 0, msg: 'ok', data: { balance, points_added: points } };
  }
};