Ability to add, remove, update radius and location of chatrooms with a leaflet

client/app.css

@@ -3,3 +3,36 @@
 @tailwind components;
 
 @tailwind utilities;
+
+.leaflet-container {
+  height: 100%; 
+  width: 100%;
+}
+
+.info {
+  padding: 6px 8px;
+  font: 14px/16px Arial, Helvetica, sans-serif;
+  background: white;
+  background: rgba(255, 255, 255, 0.8);
+  box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
+  border-radius: 5px;
+}
+
+.info h4 {
+  margin: 0 0 5px;
+  color: #777;
+}
+
+.legend {
+  text-align: left;
+  line-height: 18px;
+  color: #555;
+}
+
+.legend i {
+  width: 18px;
+  height: 18px;
+  float: left;
+  margin-right: 8px;
+  opacity: 0.7;
+}

client/app.jsx

@@ -7,7 +7,9 @@ import { useApi } from './utils/use_api';
 import { useJwtRefresh } from './utils/use_jwt_refresh';
 import { RolesContext } from './utils/roles_context';
 import { parseJwt } from './utils/parse_jwt';
+import { Toaster } from 'react-hot-toast';
 import './app.css';
+import 'leaflet/dist/leaflet.css';
 
 export const App = () => {
   const [authToken, setAuthToken] = useState(null);
@@ -38,6 +40,7 @@ export const App = () => {
     <AuthContext.Provider value={[authToken, setAuthToken]}>
       <ApiContext.Provider value={api}>
         <RolesContext.Provider value={jwtPayload.roles}>
+          <Toaster position="top-center" />
           <HashRouter>
             <Router />
           </HashRouter>

client/components/home/_home.jsx

@@ -4,6 +4,7 @@ import { ApiContext } from '../../utils/api_context';
 import { AuthContext } from '../../utils/auth_context';
 import { RolesContext } from '../../utils/roles_context';
 import { Button } from '../common/button';
+import { Map } from '../map/_map';
 import { Ping } from './ping';
 
 export const Home = () => {
@@ -33,19 +34,19 @@ export const Home = () => {
   }
 
   return (
-    <div className="p-4">
+    <>
-      <h1>Welcome {user.firstName}</h1>
+      <div className="p-4">
-      <Button type="button" onClick={logout}>
+        <h1>Welcome {user.firstName}</h1>
-        Logout
+        <Button type="button" onClick={logout}>
-      </Button>
+          Logout
-      {roles.includes('admin') && (
-        <Button type="button" onClick={() => navigate('/admin')}>
-          Admin
         </Button>
-      )}
+        {roles.includes('admin') && (
-      <section>
+          <Button type="button" onClick={() => navigate('/admin')}>
-        <Ping />
+            Admin
-      </section>
+          </Button>
-    </div>
+        )}
+      </div>
+      <Map user={user} />
+    </>
   );
 };

client/components/map/_map.jsx

@@ -0,0 +1,47 @@
+import { MapContainer, TileLayer } from 'react-leaflet';
+import '@geoman-io/leaflet-geoman-free';
+import '@geoman-io/leaflet-geoman-free/dist/leaflet-geoman.css';
+import Geoman from './chat_room_geoman';
+import { useEffect, useState } from 'react';
+import toast from 'react-hot-toast';
+import { Legend } from './legend';
+
+export const Map = ({ user, zoom }) => {
+  const [loading, setLoading] = useState(true);
+  const [position, setPosition] = useState({});
+  const [positionWatcher, setPositionWatcher] = useState();
+
+  zoom = zoom || 18;
+
+  useEffect(() => {
+    if (user) {
+      setPositionWatcher(
+        navigator.geolocation.getCurrentPosition(
+          (pos) => {
+            const { latitude: lat, longitude: lng } = pos.coords;
+            setPosition({ lat, lng });
+            setLoading(false);
+          },
+          (err) => {
+            toast.error(err.message);
+          },
+        ),
+      );
+    }
+  }, [user]);
+
+  if (!loading) {
+    return (
+      <MapContainer center={position} zoom={zoom} minZoom={15}>
+        <TileLayer
+          url="https://tile.openstreetmap.org/{z}/{x}/{y}.png"
+          attribution='&copy; OpenStreetMap | &copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
+          maxZoom={19}
+        />
+        <Legend />
+        <Geoman joinRoom={console.log} userPos={position} user={user} />
+      </MapContainer>
+    );
+  }
+  return <div>Getting current location...</div>;
+};

client/components/map/chat_room_geoman.jsx

@@ -0,0 +1,175 @@
+import { useLeafletContext } from '@react-leaflet/core';
+import L from 'leaflet';
+import markerIconPng from 'leaflet/dist/images/marker-icon.png';
+import { useEffect, useContext } from 'react';
+import { ApiContext } from '../../utils/api_context';
+import { AuthContext } from '../../utils/auth_context';
+
+const userPositionBubble = {
+  color: 'black',
+  fillColor: 'black',
+  fillOpacity: 0.6,
+  weight: 5,
+  pmIgnore: true,
+  radius: 5,
+};
+
+const joinable = {
+  color: 'green',
+  weight: 1,
+  pmIgnore: true,
+};
+
+const unjoinable = {
+  color: 'red',
+  weight: 1,
+  pmIgnore: true,
+};
+
+const editable = {
+  color: 'blue',
+  weight: 1,
+  pmIgnore: false,
+};
+
+const icon = new L.Icon({ iconUrl: markerIconPng, iconSize: [25, 41], iconAnchor: [12, 41] });
+
+const haversine = (p1, p2) => {
+  const degreesToRadians = (degrees) => degrees * (Math.PI / 180);
+  const delta = { lat: degreesToRadians(p2.lat - p1.lat), lng: degreesToRadians(p2.lng - p1.lng) };
+  const a =
+    Math.sin(delta.lat / 2) * Math.sin(delta.lat / 2) +
+    Math.cos(degreesToRadians(p1.lat)) *
+      Math.cos(degreesToRadians(p2.lat)) *
+      Math.sin(delta.lng / 2) *
+      Math.sin(delta.lng / 2);
+  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+  const r = 6371 * 1000;
+  return r * c;
+};
+
+// GeoMan code is heavily adapted from this codesandbox: https://codesandbox.io/s/394eq
+export const Geoman = ({ user, userPos, joinRoom }) => {
+  const context = useLeafletContext();
+  const api = useContext(ApiContext);
+  const circleAndMarkerFromChatroom = (chatRoom) => {
+    const circle = new L.Circle(chatRoom.center, chatRoom.radius);
+    const marker = new L.Marker(chatRoom.center, { pmIgnore: !chatRoom.isEditable, icon });
+    circle.setStyle(
+      chatRoom.isEditable
+        ? editable
+        : haversine(userPos, { lat: chatRoom.latitude, lng: chatRoom.longitude }) < chatRoom.radius
+        ? joinable
+        : unjoinable,
+    );
+    marker.addEventListener('click', () => {
+      console.log(chatRoom.id);
+      console.log(haversine(userPos, { lat: chatRoom.latitude, lng: chatRoom.longitude }), chatRoom.radius, userPos);
+    });
+    if (!!chatRoom.isEditable) {
+      [circle, marker].map((x) => {
+        x.on('pm:edit', (e) => {
+          const coords = e.target.getLatLng();
+          marker.setLatLng(coords);
+          circle.setLatLng(coords);
+          api.put(`/chat_rooms/${chatRoom.id}`, {
+            ...chatRoom,
+            latitude: coords.lat,
+            longitude: coords.lng,
+          });
+        });
+        x.on('pm:remove', (e) => {
+          context.map.removeLayer(marker);
+          context.map.removeLayer(circle);
+
+          api.del(`/chat_rooms/${chatRoom.id}`);
+        });
+      });
+      circle.on('pm:drag', (e) => {
+        marker.setLatLng(e.target.getLatLng());
+      });
+      marker.on('pm:drag', (e) => {
+        circle.setLatLng(e.target.getLatLng());
+      });
+    }
+    [circle, marker].map((x) => x.addTo(context.map));
+    return [circle, marker];
+  };
+
+  const reRender = async () => {
+    const layersToRemove = [];
+    context.map.eachLayer((layer) => {
+      if (layer instanceof L.Circle || layer instanceof L.Marker) {
+        layersToRemove.push(layer);
+      }
+    });
+
+    const res = await api.get(`/chat_rooms?lat=${userPos.lat}&lng=${userPos.lng}`);
+    res.map((x) => {
+      circleAndMarkerFromChatroom({
+        center: [x.latitude, x.longitude],
+        ...x,
+        isEditable: user && x.userId == user.id,
+      });
+    });
+    layersToRemove.map((x) => context.map.removeLayer(x));
+
+    const userLocationCircle = new L.Circle(userPos, 5);
+    userLocationCircle.setStyle(userPositionBubble);
+    userLocationCircle.addTo(context.map);
+  };
+
+  useEffect(() => {
+    if (context) {
+      reRender();
+    }
+  }, [userPos]);
+
+  useEffect(() => {
+    const leafletContainer = context.layerContainer || context.map;
+    leafletContainer.pm.addControls({
+      drawMarker: false,
+      editControls: true,
+      dragMode: true,
+      cutPolygon: false,
+      removalMode: true,
+      rotateMode: false,
+      splitMode: false,
+      drawPolyline: false,
+      drawRectangle: false,
+      drawPolygon: false,
+      drawCircleMarker: false,
+    });
+
+    leafletContainer.pm.setGlobalOptions({ pmIgnore: false });
+
+    leafletContainer.on('pm:create', async (e) => {
+      if (e.layer && e.layer.pm) {
+        const shape = e;
+        context.map.removeLayer(shape.layer);
+
+        const { lat: latitude, lng: longitude } = shape.layer.getLatLng();
+        const chatRoom = await api.post('/chat_rooms', {
+          latitude,
+          longitude,
+          radius: shape.layer.getRadius(),
+        });
+        reRender();
+      }
+    });
+
+    leafletContainer.on('pm:remove', (e) => {
+      console.log('object removed');
+      // console.log(leafletContainer.pm.getGeomanLayers(true).toGeoJSON());
+    });
+
+    return () => {
+      leafletContainer.pm.removeControls();
+      leafletContainer.pm.setGlobalOptions({ pmIgnore: true });
+    };
+  }, [context]);
+
+  return null;
+};
+
+export default Geoman;

client/components/map/legend.jsx

@@ -0,0 +1,28 @@
+import L from 'leaflet';
+import { useEffect } from 'react';
+import { useLeafletContext } from '@react-leaflet/core';
+
+export const Legend = () => {
+  const context = useLeafletContext();
+  useEffect(() => {
+    const legend = L.control({ position: 'topright' });
+
+    legend.onAdd = () => {
+      const div = L.DomUtil.create('div', 'info legend');
+      let labels = [];
+
+      labels.push('<i style="background:black"></i><span>Current position</span>');
+      labels.push('<i style="background:red"></i><span>Unjoinable</span>');
+      labels.push('<i style="background:green"></i><span>Joinable</span>');
+      labels.push('<i style="background:blue"></i><span>Editable</span>');
+
+      div.innerHTML = labels.join('<br>');
+      return div;
+    };
+
+    const { map } = context;
+    legend.addTo(map);
+  }, [context]);
+
+  return null;
+};

client/components/router.jsx

@@ -5,6 +5,7 @@ import { AuthContext } from '../utils/auth_context';
 import { SignIn } from './sign_in/_sign_in';
 import { SignUp } from './sign_up/_sign_up';
 import { Admin } from './admin/_admin';
+import { Map } from './map/_map';
 
 export const Router = () => {
   const [authToken] = useContext(AuthContext);
@@ -18,6 +19,7 @@ export const Router = () => {
       <Route path="admin" element={<Admin />} />
       <Route path="signin" element={<SignIn />} />
       <Route path="signup" element={<SignUp />} />
+      <Route path="map" element={<Map />} />
     </Routes>
   );
 };

client/package.json

@@ -15,8 +15,12 @@
     "tailwindcss": "^2.2.19"
   },
   "dependencies": {
+    "@geoman-io/leaflet-geoman-free": "^2.11.4",
+    "leaflet": "^1.7.1",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
+    "react-hot-toast": "^2.2.0",
+    "react-leaflet": "^3.2.5",
     "react-router-dom": "6",
     "socket.io-client": "^4.4.1"
   }

client/yarn.lock

@@ -30,6 +30,18 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
+"@geoman-io/leaflet-geoman-free@^2.11.4":
+  version "2.11.4"
+  resolved "https://registry.yarnpkg.com/@geoman-io/leaflet-geoman-free/-/leaflet-geoman-free-2.11.4.tgz#4a43fa8d3d5d2bca751135b775c19c6cc0063699"
+  integrity sha512-uWfgaGDhrtoCMHdHi2oNVKb8WXFMQvyNnan1sS/+Yn5jMPuhijWFyAjy0G5kTCamXhGXg4vUvlEpiRSrBwewKg==
+  dependencies:
+    "@turf/boolean-contains" "^6.5.0"
+    "@turf/kinks" "^6.5.0"
+    "@turf/line-intersect" "^6.5.0"
+    "@turf/line-split" "^6.5.0"
+    lodash "4.17.21"
+    polygon-clipping "0.15.3"
+
 "@nodelib/fs.scandir@2.1.5":
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz#7619c2eb21b25483f6d167548b4cfd5a7488c3d5"
@@ -603,6 +615,11 @@
     chrome-trace-event "^1.0.2"
     nullthrows "^1.1.1"
 
+"@react-leaflet/core@^1.1.1":
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/@react-leaflet/core/-/core-1.1.1.tgz#827fd05bb542cf874116176d8ef48d5b12163f81"
+  integrity sha512-7PGLWa9MZ5x/cWy8EH2VzI4T8q5WpuHbixzCDXqixP/WyqwIrg5NDUPgYuFnB4IEIZF+6nA265mYzswFo/h1Pw==
+
 "@socket.io/base64-arraybuffer@~1.0.2":
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/@socket.io/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz#568d9beae00b0d835f4f8c53fd55714986492e61"
@@ -623,6 +640,161 @@
   resolved "https://registry.yarnpkg.com/@trysound/sax/-/sax-0.2.0.tgz#cccaab758af56761eb7bf37af6f03f326dd798ad"
   integrity sha512-L7z9BgrNEcYyUYtF+HaEfiS5ebkh9jXqbszz7pC0hRBPaatV0XjSD3+eHrpqFemQfgwiFF0QPIarnIihIDn7OA==
 
+"@turf/bbox@*", "@turf/bbox@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/bbox/-/bbox-6.5.0.tgz#bec30a744019eae420dac9ea46fb75caa44d8dc5"
+  integrity sha512-RBbLaao5hXTYyyg577iuMtDB8ehxMlUqHEJiMs8jT1GHkFhr6sYre3lmLsPeYEi/ZKj5TP5tt7fkzNdJ4GIVyw==
+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+
+"@turf/bearing@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/bearing/-/bearing-6.5.0.tgz#462a053c6c644434bdb636b39f8f43fb0cd857b0"
+  integrity sha512-dxINYhIEMzgDOztyMZc20I7ssYVNEpSv04VbMo5YPQsqa80KO3TFvbuCahMsCAW5z8Tncc8dwBlEFrmRjJG33A==
+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/boolean-contains@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/boolean-contains/-/boolean-contains-6.5.0.tgz#f802e7432fb53109242d5bf57393ef2f53849bbf"
+  integrity sha512-4m8cJpbw+YQcKVGi8y0cHhBUnYT+QRfx6wzM4GI1IdtYH3p4oh/DOBJKrepQyiDzFDaNIjxuWXBh0ai1zVwOQQ==
+  dependencies:
+    "@turf/bbox" "^6.5.0"
+    "@turf/boolean-point-in-polygon" "^6.5.0"
+    "@turf/boolean-point-on-line" "^6.5.0"
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/boolean-point-in-polygon@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/boolean-point-in-polygon/-/boolean-point-in-polygon-6.5.0.tgz#6d2e9c89de4cd2e4365004c1e51490b7795a63cf"
+  integrity sha512-DtSuVFB26SI+hj0SjrvXowGTUCHlgevPAIsukssW6BG5MlNSBQAo70wpICBNJL6RjukXg8d2eXaAWuD/CqL00A==
+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/boolean-point-on-line@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/boolean-point-on-line/-/boolean-point-on-line-6.5.0.tgz#a8efa7bad88760676f395afb9980746bc5b376e9"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/destination@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/destination/-/destination-6.5.0.tgz#30a84702f9677d076130e0440d3223ae503fdae1"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/distance@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/distance/-/distance-6.5.0.tgz#21f04d5f86e864d54e2abde16f35c15b4f36149a"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+
+"@turf/helpers@6.x", "@turf/helpers@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/helpers/-/helpers-6.5.0.tgz#f79af094bd6b8ce7ed2bd3e089a8493ee6cae82e"
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+
+"@turf/invariant@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/invariant/-/invariant-6.5.0.tgz#970afc988023e39c7ccab2341bd06979ddc7463f"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+
+"@turf/kinks@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/kinks/-/kinks-6.5.0.tgz#80e7456367535365012f658cf1a988b39a2c920b"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+
+"@turf/line-intersect@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/line-intersect/-/line-intersect-6.5.0.tgz#dea48348b30c093715d2195d2dd7524aee4cf020"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+    "@turf/line-segment" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+    geojson-rbush "3.x"
+
+"@turf/line-segment@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/line-segment/-/line-segment-6.5.0.tgz#ee73f3ffcb7c956203b64ed966d96af380a4dd65"
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+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+
+"@turf/line-split@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/line-split/-/line-split-6.5.0.tgz#116d7fbf714457878225187f5820ef98db7b02c2"
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+  dependencies:
+    "@turf/bbox" "^6.5.0"
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+    "@turf/line-intersect" "^6.5.0"
+    "@turf/line-segment" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+    "@turf/nearest-point-on-line" "^6.5.0"
+    "@turf/square" "^6.5.0"
+    "@turf/truncate" "^6.5.0"
+    geojson-rbush "3.x"
+
+"@turf/meta@6.x", "@turf/meta@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/meta/-/meta-6.5.0.tgz#b725c3653c9f432133eaa04d3421f7e51e0418ca"
+  integrity sha512-RrArvtsV0vdsCBegoBtOalgdSOfkBrTJ07VkpiCnq/491W67hnMWmDu7e6Ztw0C3WldRYTXkg3SumfdzZxLBHA==
+  dependencies:
+    "@turf/helpers" "^6.5.0"
+
+"@turf/nearest-point-on-line@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/nearest-point-on-line/-/nearest-point-on-line-6.5.0.tgz#8e1cd2cdc0b5acaf4c8d8b3b33bb008d3cb99e7b"
+  integrity sha512-WthrvddddvmymnC+Vf7BrkHGbDOUu6Z3/6bFYUGv1kxw8tiZ6n83/VG6kHz4poHOfS0RaNflzXSkmCi64fLBlg==
+  dependencies:
+    "@turf/bearing" "^6.5.0"
+    "@turf/destination" "^6.5.0"
+    "@turf/distance" "^6.5.0"
+    "@turf/helpers" "^6.5.0"
+    "@turf/invariant" "^6.5.0"
+    "@turf/line-intersect" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+
+"@turf/square@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/square/-/square-6.5.0.tgz#ab43eef99d39c36157ab5b80416bbeba1f6b2122"
+  integrity sha512-BM2UyWDmiuHCadVhHXKIx5CQQbNCpOxB6S/aCNOCLbhCeypKX5Q0Aosc5YcmCJgkwO5BERCC6Ee7NMbNB2vHmQ==
+  dependencies:
+    "@turf/distance" "^6.5.0"
+    "@turf/helpers" "^6.5.0"
+
+"@turf/truncate@^6.5.0":
+  version "6.5.0"
+  resolved "https://registry.yarnpkg.com/@turf/truncate/-/truncate-6.5.0.tgz#c3a16cad959f1be1c5156157d5555c64b19185d8"
+  integrity sha512-pFxg71pLk+eJj134Z9yUoRhIi8vqnnKvCYwdT4x/DQl/19RVdq1tV3yqOT3gcTQNfniteylL5qV1uTBDV5sgrg==
+  dependencies:
+    "@turf/helpers" "^6.5.0"
+    "@turf/meta" "^6.5.0"
+
+"@types/geojson@7946.0.8":
+  version "7946.0.8"
+  resolved "https://registry.yarnpkg.com/@types/geojson/-/geojson-7946.0.8.tgz#30744afdb385e2945e22f3b033f897f76b1f12ca"
+  integrity sha512-1rkryxURpr6aWP7R786/UQOkJ3PcpQiWkAXBmdWc7ryFWqN6a4xfK7BtjXvFBKO9LjQ+MWQSWxYeZX1OApnArA==
+
 "@types/parse-json@^4.0.0":
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.0.tgz#2f8bb441434d163b35fb8ffdccd7138927ffb8c0"
@@ -1188,6 +1360,17 @@ function-bind@^1.1.1:
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
   integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
 
+geojson-rbush@3.x:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/geojson-rbush/-/geojson-rbush-3.2.0.tgz#8b543cf0d56f99b78faf1da52bb66acad6dfc290"
+  integrity sha512-oVltQTXolxvsz1sZnutlSuLDEcQAKYC/uXt9zDzJJ6bu0W+baTI8LZBaTup5afzibEH4N3jlq2p+a152wlBJ7w==
+  dependencies:
+    "@turf/bbox" "*"
+    "@turf/helpers" "6.x"
+    "@turf/meta" "6.x"
+    "@types/geojson" "7946.0.8"
+    rbush "^3.0.1"
+
 get-port@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/get-port/-/get-port-4.2.0.tgz#e37368b1e863b7629c43c5a323625f95cf24b119"
@@ -1226,6 +1409,11 @@ globals@^13.2.0:
   dependencies:
     type-fest "^0.20.2"
 
+goober@^2.1.1:
+  version "2.1.8"
+  resolved "https://registry.yarnpkg.com/goober/-/goober-2.1.8.tgz#e592c04d093cb38f77b38cfcb012b7811c85765e"
+  integrity sha512-S0C85gCzcfFCMSdjD/CxyQMt1rbf2qEg6hmDzxk2FfD7+7Ogk55m8ZFUMtqNaZM4VVX/qaU9AzSORG+Gf4ZpAQ==
+
 graceful-fs@^4.1.6, graceful-fs@^4.2.0:
   version "4.2.8"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.8.tgz#e412b8d33f5e006593cbd3cee6df9f2cebbe802a"
@@ -1423,6 +1611,11 @@ jsonfile@^6.0.1:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+leaflet@^1.7.1:
+  version "1.7.1"
+  resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.7.1.tgz#10d684916edfe1bf41d688a3b97127c0322a2a19"
+  integrity sha512-/xwPEBidtg69Q3HlqPdU3DnrXQOvQU/CCHA1tcDQVzOwm91YMYaILjNp7L4Eaw5Z4sOYdbBz6koWyibppd8Zqw==
+
 lilconfig@^2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/lilconfig/-/lilconfig-2.0.4.tgz#f4507d043d7058b380b6a8f5cb7bcd4b34cee082"
@@ -1459,7 +1652,7 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@^4.17.21:
+lodash@4.17.21, lodash@^4.17.21:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
@@ -1684,6 +1877,13 @@ picomatch@^2.2.3:
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.1.tgz#3ba3833733646d9d3e4995946c1365a67fb07a42"
   integrity sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==
 
+polygon-clipping@0.15.3:
+  version "0.15.3"
+  resolved "https://registry.yarnpkg.com/polygon-clipping/-/polygon-clipping-0.15.3.tgz#0215840438470ba2e9e6593625e4ea5c1087b4b7"
+  integrity sha512-ho0Xx5DLkgxRx/+n4O74XyJ67DcyN3Tu9bGYKsnTukGAW6ssnuak6Mwcyb1wHy9MZc9xsUWqIoiazkZB5weECg==
+  dependencies:
+    splaytree "^3.1.0"
+
 postcss-calc@^8.2.0:
   version "8.2.4"
   resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-8.2.4.tgz#77b9c29bfcbe8a07ff6693dc87050828889739a5"
@@ -2002,6 +2202,18 @@ quick-lru@^5.1.1:
   resolved "https://registry.yarnpkg.com/quick-lru/-/quick-lru-5.1.1.tgz#366493e6b3e42a3a6885e2e99d18f80fb7a8c932"
   integrity sha512-WuyALRjWPDGtt/wzJiadO5AXY+8hZ80hVpe6MyivgraREW751X3SbhRvG3eLKOYN+8VEvqLcf3wdnt44Z4S4SA==
 
+quickselect@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/quickselect/-/quickselect-2.0.0.tgz#f19680a486a5eefb581303e023e98faaf25dd018"
+  integrity sha512-RKJ22hX8mHe3Y6wH/N3wCM6BWtjaxIyyUIkpHOvfFnxdI4yD4tBXEBKSbriGujF6jnSVkJrffuo6vxACiSSxIw==
+
+rbush@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/rbush/-/rbush-3.0.1.tgz#5fafa8a79b3b9afdfe5008403a720cc1de882ecf"
+  integrity sha512-XRaVO0YecOpEuIvbhbpTrZgoiI6xBlz6hnlr6EHhd+0x9ase6EmeN+hdwwUaJvLcsFFQ8iWVF1GAK1yB0BWi0w==
+  dependencies:
+    quickselect "^2.0.0"
+
 react-dom@^17.0.2:
   version "17.0.2"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-17.0.2.tgz#ecffb6845e3ad8dbfcdc498f0d0a939736502c23"
@@ -2011,6 +2223,20 @@ react-dom@^17.0.2:
     object-assign "^4.1.1"
     scheduler "^0.20.2"
 
+react-hot-toast@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/react-hot-toast/-/react-hot-toast-2.2.0.tgz#ab6f4caed4214b9534f94bb8cfaaf21b051e62b9"
+  integrity sha512-248rXw13uhf/6TNDVzagX+y7R8J183rp7MwUMNkcrBRyHj/jWOggfXTGlM8zAOuh701WyVW+eUaWG2LeSufX9g==
+  dependencies:
+    goober "^2.1.1"
+
+react-leaflet@^3.2.5:
+  version "3.2.5"
+  resolved "https://registry.yarnpkg.com/react-leaflet/-/react-leaflet-3.2.5.tgz#bec0bfab9dd8c2b030ea630f7a0687a60322ca7d"
+  integrity sha512-Z3KZ+4SijsRbbrt2I1a3ZDY6+V6Pm91eYTdxTN18G6IOkFRsJo1BuSPLFnyFrlF3WDjQFPEcTPkEgD1VEeAoBg==
+  dependencies:
+    "@react-leaflet/core" "^1.1.1"
+
 react-refresh@^0.9.0:
   version "0.9.0"
   resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.9.0.tgz#71863337adc3e5c2f8a6bfddd12ae3bfe32aafbf"
@@ -2179,6 +2405,11 @@ source-map@~0.7.2:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
   integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
 
+splaytree@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/splaytree/-/splaytree-3.1.1.tgz#e1bc8e68e64ef5a9d5f09d36e6d9f3621795a438"
+  integrity sha512-9FaQ18FF0+sZc/ieEeXHt+Jw2eSpUgUtTLDYB/HXKWvhYVyOc7h1hzkn5MMO3GPib9MmXG1go8+OsBBzs/NMww==
+
 stable@^0.1.8:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.8.tgz#836eb3c8382fe2936feaf544631017ce7d47a3cf"

server/app.module.ts

@@ -3,17 +3,19 @@ import { APP_GUARD } from '@nestjs/core';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { AppController } from './app.controller';
 import { config } from './database/config';
+import { ChatRoomModule } from './modules/chat_room.module';
 import { UsersModule } from './modules/users.module';
 import { PingGateway } from './providers/gateways/ping.gateway';
 import { AuthGuard } from './providers/guards/auth.guard';
 import { RolesGuard } from './providers/guards/roles.guard';
+import { ChatRoomService } from './providers/services/chat_room.service';
 import { JwtService } from './providers/services/jwt.service';
 import { RolesService } from './providers/services/roles.service';
 import { UsersService } from './providers/services/users.service';
 import { GuardUtil } from './providers/util/guard.util';
 
 @Module({
-  imports: [TypeOrmModule.forRoot(config), UsersModule],
+  imports: [TypeOrmModule.forRoot(config), UsersModule, ChatRoomModule],
   controllers: [AppController],
   providers: [
     PingGateway,
@@ -21,6 +23,7 @@ import { GuardUtil } from './providers/util/guard.util';
     RolesService,
     JwtService,
     GuardUtil,
+    ChatRoomService,
     { provide: APP_GUARD, useClass: AuthGuard }, // auth guard should come before roles guard
     { provide: APP_GUARD, useClass: RolesGuard }, // otherwise users won't be authenticated before roles check
   ],

server/controllers/chat_room.controller.ts

@@ -1,12 +1,55 @@
-import { Controller, Get } from '@nestjs/common';
+import { Body, Controller, Delete, Get, Param, Post, Put, Query } from '@nestjs/common';
+import { JwtBody } from 'server/decorators/jwt_body.decorator';
+import { JwtBodyDto } from 'server/dto/jwt_body.dto';
 import { ChatRoomService } from 'server/providers/services/chat_room.service';
+import { UsersService } from 'server/providers/services/users.service';
 
 @Controller()
 export class ChatRoomController {
-  constructor(private chatRoomService: ChatRoomService) {}
+  constructor(private chatRoomService: ChatRoomService, private usersService: UsersService) {}
 
   @Get('/chat_rooms')
-  async get() {
+  async get(@Query() query: any) {
-    return await this.chatRoomService.all();
+    console.log(query);
+    return await this.chatRoomService.near(query);
+  }
+
+  @Post('/chat_rooms')
+  async create(@JwtBody() jwtBody: JwtBodyDto, @Body() chatRoom: any) {
+    chatRoom.user = await this.usersService.find(jwtBody.userId);
+    console.log(jwtBody);
+    return await this.chatRoomService.create(chatRoom);
+  }
+
+  private async authorized(jwtBody: JwtBodyDto, chatRoom: any) {
+    const user = await this.usersService.find(jwtBody.userId);
+    if (user.id !== chatRoom.user.id) {
+      return {
+        error: 'You are not the owner of this chat room',
+      };
+    }
+    return true;
+  }
+
+  @Put('/chat_rooms/:id')
+  async update(@JwtBody() jwtBody: JwtBodyDto, @Param('id') id: number, @Body() chatRoom: any) {
+    console.log(id);
+    const chat_room = await this.chatRoomService.findById(id, ['user']);
+    if (!(await this.authorized(jwtBody, chat_room))) {
+      return chat_room;
+    }
+    chat_room.latitude = chatRoom.latitude;
+    chat_room.longitude = chatRoom.longitude;
+    chat_room.radius = chatRoom.radius;
+    return await this.chatRoomService.save(chat_room);
+  }
+
+  @Delete('/chat_rooms/:id')
+  async delete(@JwtBody() jwtBody: JwtBodyDto, @Param('id') id: number) {
+    const chat_room = await this.chatRoomService.findById(id, ['user']);
+    if (!(await this.authorized(jwtBody, chat_room))) {
+      return false;
+    }
+    return await this.chatRoomService.remove(chat_room);
   }
 }

server/controllers/users.controller.ts

@@ -35,6 +35,7 @@ export class UsersController {
   @Get('/users/me')
   async getCurrentUser(@JwtBody() jwtBody: JwtBodyDto) {
     const user = await this.usersService.find(jwtBody.userId);
+    delete user.passwordHash;
     return { user };
   }
 

server/database/migrations/1648605030863-AddChatRoom.ts

@@ -1,10 +1,10 @@
-import { MigrationInterface, QueryRunner, Table } from 'typeorm';
+import { MigrationInterface, QueryRunner, Table, TableForeignKey } from 'typeorm';
 
 export class AddChatRoom1648605030863 implements MigrationInterface {
   public async up(queryRunner: QueryRunner): Promise<void> {
     await queryRunner.createTable(
       new Table({
-        name: 'chatroom',
+        name: 'chat_room',
         columns: [
           {
             name: 'id',
@@ -13,8 +13,8 @@ export class AddChatRoom1648605030863 implements MigrationInterface {
             isGenerated: true,
           },
           {
-            name: 'name',
+            name: 'userId',
-            type: 'text',
+            type: 'int',
             isNullable: false,
           },
           {
@@ -35,9 +35,19 @@ export class AddChatRoom1648605030863 implements MigrationInterface {
         ],
       }),
     );
+
+    await queryRunner.createForeignKey(
+      'chat_room',
+      new TableForeignKey({
+        columnNames: ['userId'],
+        referencedColumnNames: ['id'],
+        referencedTableName: 'user',
+        onDelete: 'CASCADE',
+      }),
+    );
   }
 
   public async down(queryRunner: QueryRunner): Promise<void> {
-    await queryRunner.dropTable('chatroom');
+    await queryRunner.dropTable('chat_room');
   }
 }

server/database/migrations/1648669551959-AddDistanceFunction.ts

@@ -0,0 +1,45 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddDistanceFunction1648669551959 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    // From https://stackoverflow.com/questions/61135374/postgresql-calculate-distance-between-two-points-without-using-postgis
+    await queryRunner.query(`
+CREATE OR REPLACE FUNCTION calculate_distance(lat1 float, lon1 float, lat2 float, lon2 float, units varchar)
+  RETURNS float AS $dist$
+      DECLARE
+          dist float = 0;
+          radlat1 float;
+          radlat2 float;
+          theta float;
+          radtheta float;
+      BEGIN
+          IF lat1 = lat2 OR lon1 = lon2
+              THEN RETURN dist;
+          ELSE
+              radlat1 = pi() * lat1 / 180;
+              radlat2 = pi() * lat2 / 180;
+              theta = lon1 - lon2;
+              radtheta = pi() * theta / 180;
+              dist = sin(radlat1) * sin(radlat2) + cos(radlat1) * cos(radlat2) * cos(radtheta);
+  
+              IF dist > 1 THEN dist = 1; END IF;
+  
+              dist = acos(dist);
+              dist = dist * 180 / pi();
+              dist = dist * 60 * 1.1515;
+  
+              IF units = 'K' THEN dist = dist * 1.609344; END IF;
+              IF units = 'N' THEN dist = dist * 0.8684; END IF;
+  
+              RETURN dist;
+          END IF;
+      END;
+  $dist$ LANGUAGE plpgsql;`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `DROP FUNCTION IF EXISTS calculate_distance(lat1 float, lon1 float, lat2 float, lon2 float, units varchar);`,
+    );
+  }
+}

server/entities/chat_room.entity.ts

@@ -1,13 +1,11 @@
-import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
+import { Entity, PrimaryGeneratedColumn, Column, ManyToOne } from 'typeorm';
+import { User } from './user.entity';
 
 @Entity()
 export class ChatRoom {
   @PrimaryGeneratedColumn()
   id: number;
 
-  @Column()
-  name: string;
-
   @Column()
   latitude: number;
 
@@ -16,4 +14,7 @@ export class ChatRoom {
 
   @Column()
   radius: number;
+
+  @ManyToOne(() => User, (user) => user.chatRooms)
+  user: User;
 }

server/entities/user.entity.ts

@@ -1,4 +1,5 @@
 import { Entity, Column, PrimaryGeneratedColumn, OneToMany } from 'typeorm';
+import { ChatRoom } from './chat_room.entity';
 import { RefreshToken } from './refresh_token.entity';
 import { UserRole } from './user_role.entity';
 
@@ -24,4 +25,7 @@ export class User {
 
   @OneToMany(() => UserRole, (userRole) => userRole.user, { cascade: true })
   userRoles: UserRole[];
+
+  @OneToMany(() => ChatRoom, (chatRoom) => chatRoom.user)
+  chatRooms: ChatRoom[];
 }

server/modules/chat_room.module.ts

@@ -3,11 +3,13 @@ import { TypeOrmModule } from '@nestjs/typeorm';
 import { ChatRoomController } from 'server/controllers/chat_room.controller';
 import { ChatRoom } from 'server/entities/chat_room.entity';
 import { ChatRoomService } from 'server/providers/services/chat_room.service';
+import { UsersService } from 'server/providers/services/users.service';
+import { UsersModule } from './users.module';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([ChatRoom])],
+  imports: [TypeOrmModule.forFeature([ChatRoom]), UsersModule],
   controllers: [ChatRoomController],
-  providers: [ChatRoomService],
+  providers: [ChatRoomService, UsersService],
   exports: [TypeOrmModule],
 })
-export class UsersModule {}
+export class ChatRoomModule {}

server/modules/users.module.ts

@@ -11,9 +11,10 @@ import { RefreshTokensController } from 'server/controllers/refresh_tokens.contr
 import { Role } from 'server/entities/role.entity';
 import { RolesService } from 'server/providers/services/roles.service';
 import { UserRole } from 'server/entities/user_role.entity';
+import { ChatRoom } from 'server/entities/chat_room.entity';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([User, RefreshToken, Role, UserRole])],
+  imports: [TypeOrmModule.forFeature([User, RefreshToken, Role, UserRole, ChatRoom])],
   controllers: [SessionsController, UsersController, RefreshTokensController],
   providers: [UsersService, RolesService, RefreshTokensService, JwtService],
   exports: [TypeOrmModule],

server/providers/services/chat_room.service.ts

@@ -18,7 +18,21 @@ export class ChatRoomService {
     return this.chatRoomRepository.find();
   }
 
-  findById(id: number) {
+  near({ lat, lng }: { lat: number; lng: number }) {
-    return this.chatRoomRepository.findOne(id);
+    return this.chatRoomRepository.query(
+      `SELECT * FROM chat_room WHERE calculate_distance(latitude, longitude, ${lat}, ${lng}, 'M') < 5`,
+    );
+  }
+
+  findById(id: number, relations: string[] = []) {
+    return this.chatRoomRepository.findOne(id, { relations });
+  }
+
+  save(chatRoom: ChatRoom) {
+    return this.chatRoomRepository.save(chatRoom);
+  }
+
+  remove(chatRoom: ChatRoom) {
+    return this.chatRoomRepository.remove(chatRoom);
   }
 }