MUMapBooster - Adds location to Monash Maps (https://maps.monash.edu) searches to improve relevance of results

mumapbooster.user.js

// ==UserScript==
// @name        Monash Maps location search booster
// @namespace   nick.tay.blue
// @match       https://maps.monash.edu/
// @grant       none
// @version     0.1.2
// @author      Nicholas Tay <nick@windblume.net>
// @description Adds location as context to the MazeMap API before searching to improve relevance of searches
// ==/UserScript==

// MazeMap API's search result sorting is kinda weird, probably due to 'relevance' vs 'location'.
// It doesn't seem to work very well, though.
// This option allows you to just apply naive location sorting to the results instead.
// It's not a very good solution in some cases but is better in generic cases like 'toilet', so
// IF YOU USE THIS: if you want to turn it off, just add a space!
const MUMAPBOOST_USE_CUSTOM_LOC_SORT = true;

let orig = Mazemap.Search.SearchController.prototype.search;
Mazemap.Search.SearchController.prototype.search = function(query) {
    let useCustom = MUMAPBOOST_USE_CUSTOM_LOC_SORT && !query.includes(" ");

    // lat lng by mapbox's centre, refresh on every search
    let loc = window.muMap.getCenter();
    this.options = {
        ...this.options,
        ...loc,
        rows: useCustom ? 20 : 75, // restrict harder with this, as more to be wrong
        boostbydistance: true,
        searchdiameter: 50
    };

    console.log("[MUMapBooster] Boosting search.");
    let p = orig.apply(this, arguments);

    if (!useCustom)
        return p;

    return p.then(response => {
        response.results.features.sort((a, b) => {
            // Apply basic pythag...
            return Math.sqrt(
                Math.pow(a.geometry.coordinates[1] - loc.lat, 2)
              + Math.pow(a.geometry.coordinates[0] - loc.lng, 2)
            )
            >
            Math.sqrt(
                Math.pow(b.geometry.coordinates[1] - loc.lat, 2)
              + Math.pow(b.geometry.coordinates[0] - loc.lng, 2)
            );
        });
        console.log(response);
        return response;
    });
};
console.log("[MUMapBooster] Injected.");