old-web/app/helpers/db/searchRequest.js

"use strict";
const db = require("../../models/index");
const sequelize = require("sequelize");
const Op = sequelize.Op;
const { AD_CATEGORY } = require("../../common/enums");

const getSearchRequest = async searchRequestId => {
  try {
    return await db.SearchRequest.findByPk(searchRequestId);
  } catch (error) {
    console.log("searchrequest.js", error);
    return null;
  }
};

const createSearchRequest = async (searchRequestFields = {}) => {
  return await db.SearchRequest.create(searchRequestFields);
};

const findSearchRequestsForRealEstate = async realEstate => {
  const {
    price,
    area,
    adType,
    realEstateType,
    locationLat,
    locationLong,
    accessRoadType,
    balcony,
    newBuilding,
    elevator,
    gardenSize,
    numberOfRooms,
    numberOfFloors,
    floor
  } = realEstate;

  if (!locationLat || !locationLong) {
    return [];
  }

  const stGeometry = sequelize.fn(
    "ST_GEOMFROMTEXT",
    `POINT (${locationLong} ${locationLat})`,
    4326
  );
  const areaToSearchColumn = sequelize.col("areaToSearch");
  const contains = sequelize.fn("ST_Contains", areaToSearchColumn, stGeometry);

  const geoSearchQueryPart = sequelize.where(contains, true);

  //General query contains only attributes that are defined for every RealEstate - not null
  const query = {
    adType,
    realEstateType,
    subscribed: true,
    [Op.and]: geoSearchQueryPart
  };
  //Needed for defining which attribute should exist or not
  const realEstateTypeObject = AD_CATEGORY[realEstateType];
  //Needed to decide on including incomplete RealEstates data
  let checkForIncompleteWanted = false;

  //Attributes are checked separately and included in query only if defined - not null

  //Price and area should be defined for every property
  if (price != null) {
    query.priceMin = {
      [Op.lte]: price
    };
    query.priceMax = {
      [Op.gte]: price
    };
  }

  if (area != null) {
    query.sizeMin = {
      [Op.lte]: area
    };
    query.sizeMax = {
      [Op.gte]: area
    };
  } else {
    checkForIncompleteWanted = true;
  }
  //Other attributes can be defined or not depending on RealEstate type
  //we check what to include in query based on real estate type object
  if (realEstateTypeObject.hasGardenSize) {
    if (gardenSize != null) {
      query.gardenSizeMin = {
        [Op.lte]: gardenSize
      };
      query.gardenSizeMax = {
        [Op.gte]: gardenSize
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  if (realEstateTypeObject.hasNumberOfRoom) {
    if (numberOfRooms != null) {
      query.numberOfRoomsMin = {
        [Op.lte]: numberOfRooms
      };
      query.numberOfRoomsMax = {
        [Op.gte]: numberOfRooms
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  if (realEstateTypeObject.hasNumberOfFloors) {
    if (numberOfFloors != null) {
      query.numberOfFloorsMin = {
        [Op.lte]: numberOfFloors
      };
      query.numberOfFloorsMax = {
        [Op.gte]: numberOfFloors
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  if (realEstateTypeObject.hasFloorProp) {
    if (floor != null) {
      query.floorMin = {
        [Op.lte]: floor
      };
      query.floorMax = {
        [Op.gte]: floor
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  //AccessRoadType is defined - should exits for each ad and estate type
  if (accessRoadType != null) {
    query.accessRoadType = {
      [Op.or]: {
        [Op.eq]: "ANY",
        [Op.eq]: accessRoadType
      }
    };
  } else if (realEstateTypeObject.hasAccesRoadType) {
    checkForIncompleteWanted = true;
  }

  if (realEstateTypeObject.hasBalconyProp) {
    if (balcony != null) {
      query.balcony = {
        [Op.eq]: balcony
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  if (realEstateTypeObject.hasNewBuildingProp) {
    if (newBuilding != null) {
      query.newBuilding = {
        [Op.eq]: newBuilding
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  if (realEstateTypeObject.hasElevatorProp) {
    if (elevator != null) {
      query.elevator = {
        [Op.eq]: elevator
      };
    } else {
      checkForIncompleteWanted = true;
    }
  }

  //If one of the attributes that exists for property type is null
  //we include in query to check if incomplete real estates are accepted
  if (checkForIncompleteWanted) {
    query.includeIncompleteAds = {
      [Op.eq]: true
    };
  }
  return await db.SearchRequest.findAll({ where: query });
};

module.exports = {
  getSearchRequest,
  createSearchRequest,
  findSearchRequestsForRealEstate
};