const mongoose = require('mongoose');
const Schema = mongoose.Schema;

mongoose.Promise = global.Promise;
mongoose.level = "F";

const tools = require('../tools/general');

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

// Resolving error Unknown modifier: $pushAll
mongoose.plugin(schema => {
  schema.options.usePushEach = true
});

const MyEventSchema = new Schema({
  idapp: {
    type: String,
  },
  typol: {
    type: String,
  },
  short_tit: {
    type: String,
  },
  title: {
    type: String,
  },
  details: {
    type: String,
  },
  time: {
    type: String,
  },
  dur: {
    type: Number,
  },
  dur2: {
    type: Number,
  },
  days: {
    type: Number,
  },
  date: {
    type: Date,
  },
  bgcolor: {
    type: String,
  },
  icon: {
    type: String,
  },
  img_small: {
    type: String,
  },
  img: {
    type: String,
  },
  where: {
    type: String,
  },
  contribtype: {  // TABLE
    type: Number,
  },
  price: {
    type: Number,
  },
  infoafterprice: {
    type: String,
  },
  teacher: {   // TABLE  ?!
    type: String,
  },
  teacher2: {
    type: String,
  },
  infoextra: {
    type: String,
  },
  linkpage: {
    type: String,
  },
  linkpdf: {
    type: String,
  },
  nobookable: {
    type: Boolean,
  },
  news: {
    type: Boolean,
  },
  canceled: {
    type: Boolean,
  },
  deleted: {
    type: Boolean,
  },
  dupId: {
    type: mongoose.Schema.Types.ObjectId,
  },
  modified: {
    type: Boolean,
  },
});

MyEventSchema.statics.findAllByUserIdAndIdApp = function (userId, idapp, sall) {
  const Event = this;

  let myfind = {};
  if (sall === '1')
    myfind = { idapp, booked: true };
  else
    myfind = { userId, idapp, booked: true };

  return Event.find(myfind, (err, arrbooked) => {
    // console.log('ris MyEvent:', arrbooked);
    return arrbooked
  });
};


function getUsersByEvent(idapp) {
  const query = [
    {
      $match: { idapp }
    },
    {
      $group: { _id: "$userId" }
    },
    {
      $project: {
        _id: {
          $toString: "$userId"
        }
      }
    },
    {
      $Lookup: {
        from: "users",
        localField: "userId",    // field in my collection
        foreignField: "ObjectId(_id)",  // field in the 'from' collection
        as: "fromItems"
      }
    },
    {
      $replaceRoot: { newRoot: { $mergeObjects: [{ $arrayElemAt: ["$fromItems", 0] },] } }
    },
    { $project: { username: 1, name: 1, surname: 1 } }

  ];
  return query
}


MyEventSchema.statics.findAllDistinctByEvent = function (idapp) {
  const Event = this;

  const query = getUsersByEvent(idapp);

  return Event.aggregate(query)
    .then(ris => {
      return ris
    });
};

MyEventSchema.statics.executeQueryTable = function (idapp, params) {
  return tools.executeQueryTable(this, idapp, params);
};


const MyEvent = mongoose.model('MyEvent', MyEventSchema);

module.exports = { MyEvent };