Group tournaments into a single map marker based on position & date (#105)

app/[lang]/tournois/TournamentMap.tsx

@@ -2,7 +2,7 @@
 
 import { TimeControl } from "@/types";
 
-import { useMemo, useRef } from "react";
+import { useMemo, useRef, useCallback, useEffect } from "react";
 import L, { LatLngLiteral, Marker, DomUtil } from "leaflet";
 import MarkerClusterGroup from "react-leaflet-cluster";
 import {
@@ -13,6 +13,7 @@ import {
 } from "react-leaflet";
 import { FaAngleDoubleDown } from "react-icons/fa";
 import { useAtomValue, useSetAtom } from "jotai";
+import { groupBy } from "lodash";
 
 import "leaflet/dist/leaflet.css";
 import "leaflet-defaulticon-compatibility/dist/leaflet-defaulticon-compatibility.css";
@@ -34,7 +35,6 @@ import {
 import Legend from "./Legend";
 import { TournamentMarker } from "./TournamentMarker";
 import TimeControlFilters from "./TimeControlFilters";
-import { useCallback, useEffect } from "react";
 
 // Declare a class type that adds in methods etc. defined by leaflet.smooth_marker_bouncing
 // to keep Typescript happy
@@ -108,16 +108,24 @@ const TimeControlGroup = ({ timeControl, colour }: TimeControlGroupProps) => {
     [normsOnly, timeControl, tournaments],
   );
 
+  const groupedTournaments = groupBy(filteredTournaments, (t) => t.groupId);
+
   const hoveredListTournamentId = useAtomValue(
     debouncedHoveredListTournamentIdAtom,
   );
 
   const expandAndBounceIfNeeded = useCallback(() => {
     if (hoveredListTournamentId) {
-      const markerRef = markerRefs.current[hoveredListTournamentId];
+      const tournament = filteredTournaments.find(
+        (t) => t.id === hoveredListTournamentId,
+      );
+      if (!tournament) return false;
+
+      const markerRef = markerRefs.current[tournament.groupId];
       if (markerRef) {
         if (clusterRef.current) {
           const visibleMarker = clusterRef.current.getVisibleParent(markerRef);
+          if (!visibleMarker) return;
 
           // @ts-ignore
           if (visibleMarker.__proto__ === L.MarkerCluster.prototype) {
@@ -155,16 +163,21 @@ const TimeControlGroup = ({ timeControl, colour }: TimeControlGroupProps) => {
     }
 
     return false;
-  }, [hoveredListTournamentId]);
+  }, [filteredTournaments, hoveredListTournamentId]);
 
   const onSpiderified = useCallback(
     (e: L.MarkerClusterSpiderfyEvent) => {
       // Once expanded, bounce the appropriate marker
 
       if (hoveredListTournamentId) {
+        const tournament = filteredTournaments.find(
+          (t) => t.id === hoveredListTournamentId,
+        );
+        if (!tournament) return;
+
         expandedClusterMarkerRef.current = e.cluster;
         const markerRef = markerRefs.current[
-          hoveredListTournamentId
+          tournament.groupId
         ] as BouncingMarker;
 
         if (markerRef && e.markers.includes(markerRef)) {
@@ -173,7 +186,7 @@ const TimeControlGroup = ({ timeControl, colour }: TimeControlGroupProps) => {
         }
       }
     },
-    [hoveredListTournamentId],
+    [filteredTournaments, hoveredListTournamentId],
   );
 
   const onUnSpiderified = useCallback(
@@ -224,12 +237,12 @@ const TimeControlGroup = ({ timeControl, colour }: TimeControlGroupProps) => {
     [timeControl],
   );
 
-  const markers = filteredTournaments.map((tournament) => {
+  const markers = Object.values(groupedTournaments).map((tournamentGroup) => {
     return (
       <TournamentMarker
-        ref={(ref) => (markerRefs.current[tournament._id] = ref)}
+        ref={(ref) => (markerRefs.current[tournamentGroup[0].groupId] = ref)}
-        key={tournament._id}
+        key={tournamentGroup[0].groupId}
-        tournament={tournament}
+        tournamentGroup={tournamentGroup}
         colour={colour}
       />
     );

app/[lang]/tournois/TournamentMarker.tsx

@@ -7,36 +7,39 @@ import { Marker, Popup, MarkerProps } from "react-leaflet";
 import { useTranslations } from "next-intl";
 import { useSetAtom } from "jotai";
 import { FaTrophy } from "react-icons/fa";
+import { last } from "lodash";
 
-import { debouncedHoveredMapTournamentIdAtom } from "@/app/atoms";
+import { debouncedHoveredMapTournamentGroupIdAtom } from "@/app/atoms";
 
 type TournamentMarkerProps = {
-  tournament: Tournament;
+  tournamentGroup: Tournament[];
   colour: string;
 } & Omit<MarkerProps, "position">;
 
 export const TournamentMarker = forwardRef<
   L.Marker<any> | null,
   TournamentMarkerProps
->(({ tournament, colour, ...markerProps }, ref) => {
+>(({ tournamentGroup, colour, ...markerProps }, ref) => {
   const t = useTranslations("Tournaments");
 
+  const baseTournament = tournamentGroup[0];
+
   // We add shifts based on the time control, so that they don't hide each other
   const position = useRef({
-    lat: tournament.latLng.lat,
+    lat: baseTournament.latLng.lat,
     lng:
-      tournament.latLng.lng +
+      baseTournament.latLng.lng +
-      (tournament.timeControl === TimeControl.Rapid
+      (baseTournament.timeControl === TimeControl.Rapid
         ? -0.01
-        : tournament.timeControl === TimeControl.Blitz
+        : baseTournament.timeControl === TimeControl.Blitz
         ? 0.01
-        : tournament.timeControl === TimeControl.Other
+        : baseTournament.timeControl === TimeControl.Other
         ? 0.02
         : 0),
   });
 
-  const setHoveredMapTournamentId = useSetAtom(
+  const setHoveredMapTournamentGroupId = useSetAtom(
-    debouncedHoveredMapTournamentIdAtom,
+    debouncedHoveredMapTournamentGroupIdAtom,
   );
 
   const iconOptions = useMemo(
@@ -52,30 +55,50 @@ export const TournamentMarker = forwardRef<
     [colour],
   );
 
+  const startDate = baseTournament.date;
+  const endDate = last(tournamentGroup)!.date;
+
   return (
     <Marker
       ref={ref}
       position={position.current}
       icon={iconOptions}
       eventHandlers={{
-        mouseover: () => setHoveredMapTournamentId(tournament._id),
+        mouseover: () =>
-        mouseout: () => setHoveredMapTournamentId(null),
+          setHoveredMapTournamentGroupId(
+            `${baseTournament.groupId}_${baseTournament.timeControl}`,
+          ),
+        mouseout: () => setHoveredMapTournamentGroupId(null),
       }}
       {...markerProps}
     >
-      <Popup>
+      <Popup maxWidth={10000}>
-        <div className="flex flex-col gap-3">
+        <div className="flex max-w-[calc(100vw-80px)] flex-col gap-3 lg:max-w-[calc(100vw/2-80px)]">
-          <b>{tournament.date}</b>
+          <b>
+            {baseTournament.date}
+            {endDate !== startDate && ` - ${endDate}`}
+          </b>
 
-          <a href={tournament.url} target="_blank" rel="noopener noreferrer">
+          <div className="flex flex-col gap-0">
-            {tournament.tournament}
+            {tournamentGroup.map((tournament) => (
-          </a>
+              <a
-          {tournament.norm && (
+                key={tournament.id}
+                href={tournament.url}
+                target="_blank"
+                rel="noopener noreferrer"
+              >
+                {tournament.tournament}
+              </a>
+            ))}
+          </div>
+
+          {tournamentGroup.some((t) => t.norm) && (
             <div className="flex items-center">
               <FaTrophy className="mr-3 h-4 w-4" />
               {t("norm")}
             </div>
           )}
+
           {t("approx")}
         </div>
       </Popup>

app/[lang]/tournois/TournamentTable.tsx

@@ -12,8 +12,8 @@ import {
   filteredTournamentsListAtom,
   syncVisibleAtom,
   normsOnlyAtom,
-  hoveredMapTournamentIdAtom,
+  hoveredMapTournamentGroupIdAtom,
-  debouncedHoveredMapTournamentIdAtom,
+  debouncedHoveredMapTournamentGroupIdAtom,
   debouncedHoveredListTournamentIdAtom,
 } from "@/app/atoms";
 import { useBreakpoint } from "@/hooks/tailwind";
@@ -28,9 +28,11 @@ export default function TournamentTable() {
   const filteredTournaments = useAtomValue(filteredTournamentsListAtom);
   const [syncVisible, setSyncVisible] = useAtom(syncVisibleAtom);
   const [normsOnly, setNormsOnly] = useAtom(normsOnlyAtom);
-  const hoveredMapTournamentId = useAtomValue(hoveredMapTournamentIdAtom);
+  const hoveredMapTournamentGroupId = useAtomValue(
-  const debouncedHoveredMapTournamentId = useAtomValue(
+    hoveredMapTournamentGroupIdAtom,
-    debouncedHoveredMapTournamentIdAtom,
+  );
+  const debouncedHoveredMapTournamentGroupId = useAtomValue(
+    debouncedHoveredMapTournamentGroupIdAtom,
   );
   const setHoveredListTournamentId = useSetAtom(
     debouncedHoveredListTournamentIdAtom,
@@ -39,14 +41,13 @@ export default function TournamentTable() {
   const isLg = useBreakpoint("lg");
 
   useEffect(() => {
-    if (!isLg || debouncedHoveredMapTournamentId === null) return;
+    if (!isLg || debouncedHoveredMapTournamentGroupId === null) return;
-
+    const tournamentRow = document.querySelector(
-    const tournamentRow = document.getElementById(
+      `[data-group-id="${debouncedHoveredMapTournamentGroupId}"]`,
-      debouncedHoveredMapTournamentId,
     );
 
     tournamentRow?.scrollIntoView({ behavior: "smooth" });
-  }, [debouncedHoveredMapTournamentId, isLg]);
+  }, [debouncedHoveredMapTournamentGroupId, isLg]);
 
   return (
     <section
@@ -118,13 +119,15 @@ export default function TournamentTable() {
           ) : (
             filteredTournaments.map((tournament) => (
               <tr
-                key={tournament._id}
+                key={tournament.id}
-                id={tournament._id}
+                id={tournament.id}
-                onMouseEnter={() => setHoveredListTournamentId(tournament._id)}
+                data-group-id={`${tournament.groupId}_${tournament.timeControl}`}
+                onMouseEnter={() => setHoveredListTournamentId(tournament.id)}
                 onMouseLeave={() => setHoveredListTournamentId(null)}
                 className={twMerge(
                   "scroll-m-20 bg-white text-gray-900 hover:bg-gray-200 dark:bg-gray-800 dark:text-white dark:hover:bg-gray-900",
-                  hoveredMapTournamentId === tournament._id &&
+                  hoveredMapTournamentGroupId ===
+                    `${tournament.groupId}_${tournament.timeControl}` &&
                     "bg-gray-200 dark:bg-gray-900",
                 )}
               >

app/[lang]/tournois/page.tsx

@@ -2,6 +2,8 @@ import clientPromise from "@/lib/mongodb";
 
 import { errorLog } from "@/utils/logger";
 import { Tournament, TimeControl } from "@/types";
+import { groupBy } from "lodash";
+import { parse, differenceInDays, isSameDay } from "date-fns";
 
 import TournamentsDisplay from "./TournamentsDisplay";
 import { ObjectId } from "mongodb";
@@ -54,13 +56,61 @@ const getTournaments = async () => {
       ])
       .toArray();
 
-    return data.map<Tournament>((t) => ({
+    // Group the tournaments by their location
-      ...t,
+    const groupedByLocation = groupBy(
-      _id: t._id.toString(),
+      data,
-      timeControl: tcMap[t.time_control] ?? TimeControl.Other,
+      (t) => `${t.coordinates[0]}_${t.coordinates[1]}`,
-      latLng: { lat: t.coordinates[0], lng: t.coordinates[1] },
+    );
-      norm: t.norm_tournament,
+
-    }));
+    // For each location, create an array of arrays of contiguous dates for this location
+    const dateRangesByLocation: Record<string, Date[][]> = {};
+    for (const location in groupedByLocation) {
+      const tournaments = groupedByLocation[location];
+
+      // Note that this works since the tournaments are sorted by date
+      const dateRanges = tournaments.reduce<Date[][]>(
+        (acc, tournament) => {
+          const group = acc[acc.length - 1];
+          const date = parse(tournament.date, "dd/MM/yyyy", new Date());
+          const diff = differenceInDays(date, group[group.length - 1] ?? date);
+          if (diff > 1) {
+            acc.push([date]);
+          } else if (group.length === 0 || diff === 1) {
+            group.push(date);
+          }
+          return acc;
+        },
+        [[]],
+      );
+
+      dateRangesByLocation[location] = dateRanges;
+    }
+
+    return data.map<Tournament>((t) => {
+      const location = `${t.coordinates[0]}_${t.coordinates[1]}`;
+      const date = parse(t.date, "dd/MM/yyyy", new Date());
+      const dateRanges = dateRangesByLocation[location];
+      const rangeIndex = dateRanges.findIndex((ranges) =>
+        ranges.some((d) => isSameDay(d, date)),
+      );
+
+      // We place each tournament into a group based on location and date, so that
+      // we can display a single map marker.
+      const groupId = `${location}_${rangeIndex}`;
+
+      return {
+        id: t._id.toString(),
+        groupId,
+        tournament: t.tournament,
+        town: t.town,
+        department: t.department,
+        date: t.date,
+        url: t.url,
+        timeControl: tcMap[t.time_control] ?? TimeControl.Other,
+        latLng: { lat: t.coordinates[0], lng: t.coordinates[1] },
+        norm: t.norm_tournament,
+      };
+    });
   } catch (error) {
     errorLog(error);
     throw new Error("Error fetching tournament data");

app/atoms.ts

@@ -16,8 +16,8 @@ export const blitzAtom = atom(true);
 export const otherAtom = atom(true);
 
 export const {
-  currentValueAtom: hoveredMapTournamentIdAtom,
+  currentValueAtom: hoveredMapTournamentGroupIdAtom,
-  debouncedValueAtom: debouncedHoveredMapTournamentIdAtom,
+  debouncedValueAtom: debouncedHoveredMapTournamentGroupIdAtom,
 } = atomWithDebounce<string | null>(null);
 
 export const { debouncedValueAtom: debouncedHoveredListTournamentIdAtom } =

hooks/tailwind.ts

@@ -1,7 +1,68 @@
-import create from "@kodingdotninja/use-tailwind-breakpoint";
+import { useLayoutEffect, useEffect, useState, useRef, useMemo } from "react";
 import resolveConfig from "tailwindcss/resolveConfig";
 
 import tailwindConfig from "@/tailwind.config.js";
 const config = resolveConfig(tailwindConfig);
 
-export const { useBreakpoint } = create(config.theme!.screens);
+const isSSR =
+  typeof window === "undefined" || !window.navigator || /ServerSideRendering|^Deno\//.test(window.navigator.userAgent);
+
+const isBrowser = !isSSR;
+const useIsomorphicEffect = isBrowser ? useLayoutEffect : useEffect;
+
+export type CreatorReturnType = {
+  useBreakpoint<B>(breakpoint: B, defaultValue?: boolean): boolean;
+  useBreakpointEffect<B>(breakpoint: B, effect: (match: boolean) => void): void;
+  useBreakpointValue<B, T, U>(breakpoint: B, valid: T, invalid: U): T | U;
+};
+
+function create(screens: object | undefined) {
+  if (!screens) {
+    throw new Error("Failed to create breakpoint hooks, given `screens` value is invalid.");
+  }
+
+  function useBreakpoint(breakpoint: string, defaultValue: boolean = false) {
+    const [match, setMatch] = useState(() => defaultValue);
+    const matchRef = useRef(defaultValue);
+
+    useIsomorphicEffect(() => {
+      if (!(isBrowser && "matchMedia" in window)) return undefined;
+
+      function track() {
+        // @ts-expect-error accessing index with uncertain `screens` type
+        const value = (screens[breakpoint] as string) ?? "999999px";
+        const query = window.matchMedia(`(min-width: ${value})`);
+        matchRef.current = query.matches;
+        if (matchRef.current != match) {
+          setMatch(matchRef.current);
+        }
+      }
+
+      window.addEventListener("resize", track);
+      track();
+      return () => window.removeEventListener("resize", track);
+    });
+
+    return match;
+  }
+
+  function useBreakpointEffect<Breakpoint extends string>(breakpoint: Breakpoint, effect: (match: boolean) => void) {
+    const match = useBreakpoint(breakpoint);
+    useEffect(() => effect(match));
+    return null;
+  }
+
+  function useBreakpointValue<Breakpoint extends string, T, U>(breakpoint: Breakpoint, valid: T, invalid: U) {
+    const match = useBreakpoint(breakpoint);
+    const value = useMemo(() => (match ? valid : invalid), [invalid, match, valid]);
+    return value;
+  }
+
+  return {
+    useBreakpoint,
+    useBreakpointEffect,
+    useBreakpointValue,
+  } as CreatorReturnType;
+}
+
+export const { useBreakpoint, useBreakpointEffect, useBreakpointValue } = create(config.theme!.screens);

package-lock.json

@@ -15,11 +15,13 @@
         "@types/react-dom": "18.2.6",
         "@vercel/analytics": "^1.0.1",
         "autoprefixer": "10.4.14",
+        "date-fns": "^2.30.0",
         "jotai": "^2.2.1",
         "leaflet": "^1.9.4",
         "leaflet-defaulticon-compatibility": "^0.1.1",
         "leaflet.markercluster": "^1.5.3",
         "leaflet.smooth_marker_bouncing": "^3.0.3",
+        "lodash": "^4.17.21",
         "mongodb": "^5.7.0",
         "next": "^13.4.7",
         "next-intl": "^3.0.0-beta.7",
@@ -43,6 +45,7 @@
         "@testing-library/react": "^14.0.0",
         "@types/leaflet": "^1.9.3",
         "@types/leaflet.markercluster": "^1.5.1",
+        "@types/lodash": "^4.14.195",
         "@types/nodemailer": "^6.4.8",
         "cypress": "^12.16.0",
         "eslint": "8.43.0",
@@ -180,7 +183,6 @@
       "version": "7.21.5",
       "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.21.5.tgz",
       "integrity": "sha512-8jI69toZqqcsnqGGqwGS4Qb1VwLOEp4hz+CXPywcvjs60u3B4Pom/U/7rm4W8tMOYEB+E9wgD0mW1l3r8qlI9Q==",
-      "dev": true,
       "dependencies": {
         "regenerator-runtime": "^0.13.11"
       },
@@ -991,6 +993,12 @@
         "@types/leaflet": "*"
       }
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.195",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.195.tgz",
+      "integrity": "sha512-Hwx9EUgdwf2GLarOjQp5ZH8ZmblzcbTBC2wtQWNKARBSxM9ezRIAUpeDTgoQRAFB0+8CNWXVA9+MaSOzOF3nPg==",
+      "dev": true
+    },
     "node_modules/@types/node": {
       "version": "20.3.2",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-20.3.2.tgz",
@@ -2331,6 +2339,21 @@
         "node": ">=0.10"
       }
     },
+    "node_modules/date-fns": {
+      "version": "2.30.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-2.30.0.tgz",
+      "integrity": "sha512-fnULvOpxnC5/Vg3NCiWelDsLiUc9bRwAPs/+LfTLNvetFCtCTN+yQz15C/fs4AwX1R9K5GLtLfn8QW+dWisaAw==",
+      "dependencies": {
+        "@babel/runtime": "^7.21.0"
+      },
+      "engines": {
+        "node": ">=0.11"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/date-fns"
+      }
+    },
     "node_modules/dayjs": {
       "version": "1.11.8",
       "resolved": "https://registry.npmjs.org/dayjs/-/dayjs-1.11.8.tgz",
@@ -6255,8 +6278,7 @@
     "node_modules/regenerator-runtime": {
       "version": "0.13.11",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.11.tgz",
-      "integrity": "sha512-kY1AZVr2Ra+t+piVaJ4gxaFaReZVH40AKNo7UCX6W+dEwBo/2oZJzqfuN1qLq1oL45o56cPaTXELwrTh8Fpggg==",
+      "integrity": "sha512-kY1AZVr2Ra+t+piVaJ4gxaFaReZVH40AKNo7UCX6W+dEwBo/2oZJzqfuN1qLq1oL45o56cPaTXELwrTh8Fpggg=="
-      "dev": true
     },
     "node_modules/regexp.prototype.flags": {
       "version": "1.5.0",

package.json

@@ -20,11 +20,13 @@
     "@types/react-dom": "18.2.6",
     "@vercel/analytics": "^1.0.1",
     "autoprefixer": "10.4.14",
+    "date-fns": "^2.30.0",
     "jotai": "^2.2.1",
     "leaflet": "^1.9.4",
     "leaflet-defaulticon-compatibility": "^0.1.1",
     "leaflet.markercluster": "^1.5.3",
     "leaflet.smooth_marker_bouncing": "^3.0.3",
+    "lodash": "^4.17.21",
     "mongodb": "^5.7.0",
     "next": "^13.4.7",
     "next-intl": "^3.0.0-beta.7",
@@ -48,6 +50,7 @@
     "@testing-library/react": "^14.0.0",
     "@types/leaflet": "^1.9.3",
     "@types/leaflet.markercluster": "^1.5.1",
+    "@types/lodash": "^4.14.195",
     "@types/nodemailer": "^6.4.8",
     "cypress": "^12.16.0",
     "eslint": "8.43.0",

types.ts

@@ -8,7 +8,8 @@ export enum TimeControl {
 }
 
 export interface Tournament {
-  _id: string;
+  id: string;
+  groupId: string;
   town: string;
   department: string;
   tournament: string;