respond-framework/dist/db/aggregates/createAggregateStages.js

create as fast you think

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.createStagesCount = void 0;
var _toFromObjectIds = require("../helpers/toFromObjectIds.js");
var _join = require("./join.js");
const createAggregateStages = (specs = [], {
  collection,
  selector: $match,
  project: $project,
  sort: $sort,
  limit: $limit,
  skip: $skip
}) => {
  $match = (0, _toFromObjectIds.toObjectIdsSelector)($match);
  const stages = [];
  if ($match) stages.push({
    $match
  });
  specs.forEach(spec => {
    const joinedCollection = collection.db[spec.from];
    const arr = (0, _join.default)(spec, $match, joinedCollection);
    if ($match) delete $match[spec.name]; // important: delete so only join collection is affected, as selector is applied within joinSum (if in fact passed from client)
    stages.push(...arr);
  });
  if (!$sort.location?.lat || collection.config.useLocalDb) {
    delete $sort.location;
    stages.push({
      $sort
    });
  } else {
    stages.push({
      $geoNear: {
        near: {
          type: 'Point',
          coordinates: [$sort.location.lng, $sort.location.lat]
        },
        spherical: true,
        distanceField: 'distance',
        key: 'location'
      }
    });
  }
  stages.push({
    $skip: $skip * $limit
  });
  stages.push({
    $limit
  });
  if ($project) stages.push({
    $project: (0, _toFromObjectIds.toProject)($project)
  });
  return stages;
};
var _default = exports.default = createAggregateStages;
const createStagesCount = stages => {
  stages = stages.filter(s => !s.$sort && !s.$skip && !s.$limit && !s.$project && !s.$geoNear);
  stages.push({
    $count: 'count'
  });
  return stages;
};
exports.createStagesCount = createStagesCount;