const mongoose = require('mongoose').set('debug', false)
const Schema = mongoose.Schema;

const shared_consts = require('../tools/shared_nodejs');

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

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

const fs = require('fs'); // 👈 Usa il modulo promises

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

const orderSchema = new Schema({
  idapp: {
    type: String,
  },
  userId: { type: Schema.Types.ObjectId, ref: 'User' },
  status: {
    type: Number, index: true
  },
  idProduct: { type: Schema.Types.ObjectId, ref: 'Product', index: true },
  idProducer: { type: Schema.Types.ObjectId, ref: 'Producer' },
  idStorehouse: { type: Schema.Types.ObjectId, ref: 'StoreHouse' },
  idScontisticas: [{ type: Schema.Types.ObjectId, ref: 'Scontistica' }],
  idProvider: { type: Schema.Types.ObjectId, ref: 'Provider' },
  idGasordine: { type: Schema.Types.ObjectId, ref: 'Gasordine' },
  price: {
    type: Number,
    default: 0,
  },
  after_price: {
    type: String
  },
  color: {
    type: String
  },
  size: {
    type: String
  },
  quantity: {
    type: Number,
    default: 0,
  },
  quantitypreordered: {
    type: Number,
    default: 0,
  },
  TotalPriceProduct: {
    type: Number,
    default: 0,
  },
  TotalPriceProductstr: {
    type: String,
  },
  TotalPriceProductCalc: {
    type: Number,
    default: 0,
  },
  confermato: {  // e quindi è stato tolto dal magazzino (aggiornando il campo stockQty)
    type: Boolean,
    default: false,
  },
  date_confermato: {
    type: Date
  },
  pagato: {
    type: Boolean,
    default: false,
  },
  date_pagato: {
    type: Date
  },
  consegnato: {
    type: Boolean,
    default: false,
  },
  date_consegnato: {
    type: Date
  },
  spedito: {
    type: Boolean,
    default: false,
  },
  date_spedito: {
    type: Date
  },
  ricevuto: {
    type: Boolean,
    default: false,
  },
  date_ricevuto: {
    type: Date
  },
  weight: {
    type: Number
  },
  unit: {
    type: Number
  },
  stars: {
    type: Number
  },
  date_created: {
    type: Date
  },
  date_checkout: {
    type: Date
  },
  date_payment: {
    type: Date
  },
  date_shipping: {
    type: Date
  },
  date_delivered: {
    type: Date
  },
  note: {
    type: String
  },
  modify_at: {
    type: Date,
    index: true
  },
});

var Order = module.exports = mongoose.model('Order', orderSchema);

module.exports.createIndexes()
  .then(() => { })
  .catch((err) => { throw err; });


module.exports.getFieldsForSearch = function () {
  return []
};

module.exports.executeQueryTable = function (idapp, params) {
  const tools = require('../tools/general');

  params.fieldsearch = this.getFieldsForSearch();
  return tools.executeQueryTable(this, idapp, params);
};

module.exports.findAllIdApp = async function (idapp) {

  const query = [
    { $match: { idapp } },
    {
      $lookup: {
        from: 'products',
        localField: 'idProduct',
        foreignField: '_id',
        as: 'product'
      }
    },
    {
      $lookup: {
        from: 'productinfos',
        localField: 'product.idProduct',
        foreignField: '_id',
        as: 'product.productInfo'
      }
    },
    {
      $unwind: {
        path: '$product.productInfo',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'producers',
        localField: 'product.idProducer',
        foreignField: '_id',
        as: 'producer'
      }
    },
    {
      $lookup: {
        from: 'providers',
        localField: 'product.idProvider',
        foreignField: '_id',
        as: 'provider'
      }
    },
    {
      $lookup: {
        from: 'gasordines',
        localField: 'idGasordine',
        foreignField: '_id',
        as: 'gasordine'
      }
    },
    {
      $unwind: {
        path: '$gasordine',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $match: {
        $or: [
          { 'gasordine': { $exists: false } },
          { 'gasordine.active': true }
        ]
      }
    },
    {
      $lookup: {
        from: 'scontisticas',
        localField: 'product.idScontisticas',
        foreignField: '_id',
        as: 'scontistica'
      }
    },
    {
      $unwind: {
        path: '$product',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $unwind: {
        path: '$producer',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $unwind: {
        path: '$provider',
        preserveNullAndEmptyArrays: true,
      },
    },

  ];

  return await Order.aggregate(query)

};

module.exports.getAllOrders = function (query, sort, callback) {
  Order.find(query, null, sort, callback)
}

module.exports.getOrderByUserId = function (userId, sort, callback) {
  Order.find({ userId }, null, sort, callback)
}


module.exports.getOrderByID = function (id, callback) {
  Order.findById(id, callback);
}

module.exports.createOrder = async function (order) {

  try {
    if (order.idGasordine === '') {
      order.idGasordine = undefined;
    }
    Order.updateTotals(order);
    return await Order.create(order)
      .then((ris) => {
        if (!!ris)
          return ris._id;
        return null;
      });
  } catch (e) {
    console.error('err', e);
  }
}

module.exports.updateStatusOrders = async function (arrOrders, status) {

  for (const order of arrOrders) {
    let ret = await Order.updateOne({ _id: order.order._id }, { $set: { status } });
  }

}

module.exports.updateStatusOrdersElements = async function (arrOrders, myelements) {

  for (const order of arrOrders) {
    const ret = await Order.findOneAndUpdate({ _id: order.order._id }, { $set: myelements });
  }

}

module.exports.updateOrderByParams = async function (idOrder, paramstoupdate) {

  const ris = await Order.findOneAndUpdate({ _id: idOrder }, { $set: paramstoupdate });

  let myorder = await Order.findOne({ _id: idOrder }).lean();

  if (paramstoupdate && !paramstoupdate.hasOwnProperty('TotalPriceProduct')) {
    this.updateTotals(myorder);

    await Order.findOneAndUpdate({ _id: idOrder }, { $set: myorder });
  }

  return myorder;
}

module.exports.updateTotals = function (order) {

  try {
    if (!order) {
      return;
    }

    let mypricecalc = 0;
    order.TotalPriceProduct = 0;
    order.TotalPriceProductCalc = 0;
    order.modify_at = new Date();

    // Calcolo Sconto
    let sconti_da_applicare = [];
    if (order.scontisticas) {

      let qtadascontare = order.quantity + order.quantitypreordered
      let qtanonscontata = 0

      while (qtadascontare > 0) {
        let scontoapplicato = null
        for (const sconto of order.scontisticas.filter((rec) => !rec.cumulativo)) {
          if (qtadascontare >= sconto.qta) {
            scontoapplicato = sconto
            scontoapplicato.qtadascontare = sconto.qta
          }
        }
        if (scontoapplicato && scontoapplicato.qtadascontare > 0) {
          sconti_da_applicare.push(scontoapplicato)
          qtadascontare -= scontoapplicato.qtadascontare
        } else {
          qtanonscontata = qtadascontare
          qtadascontare = 0
        }
      }

      /*for (const sconto of order.scontisticas.filter((rec) => rec.cumulativo)) {
        if ((sconto.qta % order.quantity) === 0) {
          sconti_da_applicare.push(sconto)
        }
      }*/

      if (sconti_da_applicare.length > 0) {
        for (const sconto of sconti_da_applicare) {
          if (sconto.perc_sconto > 0) {
            mypricecalc += (sconto.qtadascontare * order.price) * (1 - (sconto.perc_sconto / 100))
          } else {
            mypricecalc += sconto.price
          }
        }
      }
      if (qtanonscontata > 0) {
        mypricecalc += order.price * qtanonscontata;
      }

    } else {
      mypricecalc = (order.price * order.quantity) + (order.price * order.quantitypreordered);
    }

    order.TotalPriceProductCalc += mypricecalc;
    order.TotalPriceProduct += mypricecalc;
    order.TotalPriceProductstr = parseFloat(order.TotalPriceProduct.toFixed(2));

    return order;

  } catch (e) {
    console.error('Err:', e);
  }
}

module.exports.getTotalOrderById = async function (id) {
  const query = [
    { $match: { _id: new ObjectId(id) } },
    {
      $lookup: {
        from: 'products',
        localField: 'idProduct',
        foreignField: '_id',
        as: 'product'
      }
    },
    {
      $unwind: {
        path: '$product',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'productinfos',
        localField: 'product.idProductInfo',
        foreignField: '_id',
        as: 'product.productInfo'
      }
    },
    {
      $unwind: {
        path: '$product.productInfo',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'producers',
        localField: 'product.idProducer',
        foreignField: '_id',
        as: 'producer'
      }
    },
    {
      $unwind: {
        path: '$producer',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'storehouses',
        localField: 'idStorehouse',
        foreignField: '_id',
        as: 'storehouse'
      }
    },
    {
      $unwind: {
        path: '$storehouse',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'providers',
        localField: 'product.idProvider',
        foreignField: '_id',
        as: 'provider'
      }
    },
    {
      $unwind: {
        path: '$provider',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'gasordines',
        localField: 'idGasordine',
        foreignField: '_id',
        as: 'gasordine'
      }
    },
    {
      $unwind: {
        path: '$gasordine',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $match: {
        $or: [
          { 'gasordine': { $exists: false } },
          { 'gasordine.active': true }
        ]
      }
    },
    {
      $lookup: {
        from: 'scontisticas',
        localField: 'product.idScontisticas',
        foreignField: '_id',
        as: 'scontisticas'
      }
    },
    {
      $lookup: {
        from: 'orders',
        let: { productId: '$product._id' },
        pipeline: [
          {
            $match: {
              $expr: {
                $and: [
                  { $eq: ['$idProduct', '$$productId'] },
                  {
                    $or: [
                      {
                        $eq: ['$status', shared_consts.OrderStatus.CHECKOUT_SENT]
                      },
                      {
                        $and: [{ $lt: ['$status', shared_consts.OrderStatus.CHECKOUT_SENT] },
                        {
                          $gt: [
                            '$modify_at',
                            { $subtract: [new Date(), 60 * 60 * 1000] } // 1 hour in milliseconds 60 * 60
                          ]
                        }]
                      }
                    ]
                  }
                ]
              }
            },
          },
          {
            $group: {
              _id: null,
              totalQty: { $sum: '$quantity' },
            }
          }
        ],
        as: 'productOrders'
      }
    },
    {
      $lookup: {
        from: 'orders',
        let: { productId: '$product._id' },
        pipeline: [
          {
            $match: {
              $expr: {
                $and: [
                  { $eq: ['$idProduct', '$$productId'] },
                  {
                    $or: [
                      {
                        $eq: ['$status', shared_consts.OrderStatus.CHECKOUT_SENT]
                      },
                      {
                        $and: [{ $lt: ['$status', shared_consts.OrderStatus.CHECKOUT_SENT] },
                        {
                          $gt: [
                            '$modify_at',
                            { $subtract: [new Date(), 60 * 60 * 1000] } // 1 hour in milliseconds 60 * 60
                          ]
                        }]
                      }
                    ]
                  }
                ]
              }
            }
          },
          {
            $group: {
              _id: null,
              totalQtyPreordered: { $sum: '$quantitypreordered' }
            }
          }
        ],
        as: 'productPreOrders'
      }
    },
    {
      $addFields: {
        'product.QuantitaOrdinateInAttesa': {
          $ifNull: [
            {
              $cond: {
                if: { $isArray: '$productOrders' },
                then: { $arrayElemAt: ['$productOrders.totalQty', 0] },
                else: 0
              }
            },
            0
          ]
        },
        'product.QuantitaPrenotateInAttesa': {
          $ifNull: [
            {
              $cond: {
                if: { $isArray: '$productPreOrders' },
                then: { $arrayElemAt: ['$productPreOrders.totalQtyPreordered', 0] },
                else: 0
              }
            },
            0
          ]
        },
      },
    },
    {
      $addFields: {
        'product.quantityAvailable': {
          $subtract: ["$product.stockQty", "$product.QuantitaOrdinateInAttesa"],
        },
        'product.bookableAvailableQty': {
          $subtract: ["$product.maxbookableGASQty", "$product.QuantitaPrenotateInAttesa"],
        }
      }
    },
    {
      $unset: 'productOrders'
    },
    {
      $unset: 'productPreOrders'
    },

  ];

  const ris = await Order.aggregate(query);
  return ris;
}

module.exports.RemoveDeletedOrdersInOrderscart = async function () {
  try {
    const OrdersCart = require('./orderscart');

    // Cancella gli Ordini che non esistono in OrdersCart
    const arrorders = await OrdersCart.find({}).lean();
    for (const rec of arrorders) {
      let recordercart = await OrdersCart.getOrdersCartById(rec._id);

      let arrord = []
      let cambiare = false;
      for (const recOrd of recordercart.items) {
        if (recOrd.order) {
          arrord.push(recOrd)
        } else {
          cambiare = true;
        }
      }
      if (cambiare) {
        await OrdersCart.findOneAndUpdate({ _id: recordercart._id }, { $set: { items: arrord } }, { new: false });
      }
    }

    // Controllo se Order non esiste in OrdersCart
    const arrord = await Order.find({}).lean();
    for (const ord of arrord) {
      const idtofind = ord._id;

      await OrdersCart.findOne({ 'items.order': { $in: [idtofind] } })
        .then(async (orderCart) => {
          if (!orderCart) {
            // NON TROVATO ! Allora lo cancello

            await Order.findOneAndDelete({ _id: ord._id });
          }
        })
        .catch(err => console.error(err));
    }


  } catch (e) {
    console.error('Err', e);
  }

};

module.exports.GeneraCSVOrdineProdotti = async function () {

  const myidGasordine = '65c2a8cc379ee4f57e865ee7';

  const myquery = [
    { $match: { idGasordine: new ObjectId(myidGasordine) } },
    {
      $lookup: {
        from: 'products',
        localField: 'idProduct',
        foreignField: '_id',
        as: 'product'
      }
    },
    {
      $unwind: {
        path: '$product',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $lookup: {
        from: 'productinfos',
        localField: 'product.idProductInfo',
        foreignField: '_id',
        as: 'productInfo'
      }
    },
    {
      $unwind: {
        path: '$productInfo',
      },
    },
    {
      $lookup: {
        from: 'gasordines',
        localField: 'idGasordine',
        foreignField: '_id',
        as: 'gasordine'
      }
    },
    {
      $unwind: {
        path: '$gasordine',
        preserveNullAndEmptyArrays: true,
      },
    },
    {
      $match: {
        $or: [
          { 'gasordine.active': true },  // Include documents where gasordines.active is true
          { 'gasordine': { $exists: false } }  // Include documents where gasordines array doesn't exist
        ]
      }
    },

    {
      $match: {
        $or: [
          { quantity: { $gt: 0 }, },
          { quantitypreordered: { $gt: 0 }, }
        ]
      }
    },

    {
      $group: {
        _id: "$product._id",
        name: { $first: "$productInfo.name" },
        weight: { $first: "$productInfo.weight" },
        price_acquistato: { $first: "$product.price_acquistato" },
        totalQuantity: { $sum: { $add: ["$quantity", "$quantitypreordered"] } },
        totalPrice_acquistato: { $sum: { $multiply: ["$product.price_acquistato", { $add: ["$quantity", "$quantitypreordered"] }] } },
        count: { $sum: 1 }
      }
    },
    {
      $sort: {
        name: 1  // Sort in ascending order based on the "date_created" field
      },
    }
  ];

  let myorderscart = await Order.aggregate(myquery);

  console.log(myorderscart)

  return generateCSV(myorderscart, 'outout.csv');

}

function generateCSV(data, outputPath) {
  const headers = ['Num', 'Nome', 'Peso', 'Prezzo', 'Quantita', 'Totale', 'Ordini'];

  const rows = data.map(item => {
    const formattedPrice = item.price_acquistato.toString().replace(/\./g, ','); // Converti "." in ","
    const total = item.totalPrice_acquistato.toString().replace(/\./g, ','); // Converti "." in ","
    return [
      0,
      `"${item.name}"`,
      item.weight,
      formattedPrice,
      item.totalQuantity,
      total,
      item.count
    ];
  });

  rows.unshift(headers);

  const csvData = rows.map(row => row.join('|'));

  fs.writeFile(outputPath, csvData.join('\n'), (err) => {
    if (err) {
      console.error('Error writing CSV file:', err);
    } else {
      console.log('CSV file has been successfully generated:', outputPath);
    }
  });
}



// const Order = mongoose.model('Order', OrderSchema);

// module.exports = { Order };