contexture-mongo/dist/esm/example-types/dateHistogram.js

Mongo Provider for Contexture

import _ from "lodash/fp.js";
import F from "futil";
import { statsAgg } from "./statistical.js";
var dateHistogram_default = {
  async result({
    key_field,
    value_field,
    interval,
    include = ["min", "max", "avg", "sum"],
    timezone
  }, search) {
    let stats = _.omit(["_id"], statsAgg(value_field).$group);
    stats.cardinality = { $addToSet: `$${value_field}` };
    let timeAgg = timezone ? { date: `$${key_field}`, timezone } : `$${key_field}`;
    return {
      entries: _.map(
        (x) => ({
          ...x,
          key: (/* @__PURE__ */ new Date(`${x.year}-${x.month || 1}-${x.day || 1}Z`)).getTime()
        }),
        await search([
          {
            $group: {
              _id: {
                ...interval === "day" && { day: { $dayOfMonth: timeAgg } },
                ..._.includes(interval, ["day", "month"]) && {
                  month: { $month: timeAgg }
                },
                year: { $year: timeAgg }
              },
              ..._.pick(include, stats)
            }
          },
          // Mongo ignore missing fields during project :)
          {
            $project: {
              day: "$_id.day",
              month: "$_id.month",
              year: "$_id.year",
              _id: 0,
              ...F.arrayToObject(
                _.identity,
                (x) => x === "cardinality" ? { $size: "$cardinality" } : 1,
                include
              )
            }
          },
          { $sort: { year: 1, month: 1, day: 1 } }
        ])
      )
    };
  }
};
export {
  dateHistogram_default as default
};