const { ObjectId } = require('mongodb');

exports.getConsultWines = async function (wines, db) {
  if (!Array.isArray(wines) || wines.length === 0) {
    throw new Error('浸酒参数错误')
  }
  const wineIds = wines.map(i => ObjectId.isValid(i._id) ? new ObjectId(i._id) : null).filter(Boolean);
  const wineDocs = await db.collection('chinese-medicine').find({ _id: { $in: wineIds } }).toArray();
  let result = [];
  for (let wine of wines) {
    const doc = wineDocs.find(i => i._id.toString() === wine._id);
    if (!doc) {
      throw new Error(`浸酒${wine.name}不存在`)
    }
    if (!(wine.quantity > 0 && Number.isInteger(wine.quantity))) {
      throw new Error(`浸酒${wine.name}数量错误`)
    }
    result.push({
      id: doc._id.toString(),
      cate: doc.cate || '',
      name: doc.name,
      quantity: wine.quantity,
      efficacy: wine.efficacy || '',
      unit: doc.unit || '',
      isFirst: typeof wine.isFirst === 'boolean' ? wine.isFirst : false
    })
  }
  return result;  
}