calculateDistance (functions/getLocations.js)

Functions to calculate Haversine distance, sort locations, and fetch via GraphQL.

// Source: https://github.com/hubspotdev/crm-customization-dev-bootcamp | License: MIT | Copyright 2024 HubSpot Inc
// Provided via justclaw.it.com; keep this notice with the code.
const axios = require("axios");

// Factor the distance calculation into its own function.
function calculateDistance(a, b) {
  const earthRadiusMiles = 3958.8; // Average radius of the Earth in miles

  // Convert degrees to radians
  const lat1 = a.lat * (Math.PI / 180);
  const lng1 = a.lng * (Math.PI / 180);
  const lat2 = b.lat * (Math.PI / 180);
  const lng2 = b.lng * (Math.PI / 180);

  // Haversine formula
  const differenceLat = lat2 - lat1;
  const differenceLng = lng2 - lng1;
  const aHav = Math.pow(Math.sin(differenceLat / 2), 2) +
    Math.cos(lat1) * Math.cos(lat2) *
    Math.pow(Math.sin(differenc

... (truncated -- full source via MCP)