Initial geofence draw implementation

3 files changed, 75 insertions, 4 deletions

diff --git a/modern/src/map/GeofenceEditMap.js b/modern/src/map/GeofenceEditMap.js
index 9487e97..291cab7 100644
--- a/modern/src/map/GeofenceEditMap.js
+++ b/modern/src/map/GeofenceEditMap.js
@@ -3,6 +3,10 @@ import MapboxDraw from '@mapbox/mapbox-gl-draw';
 import { useEffect } from 'react';
 
 import { map } from './Map';
+import { geofenceToFeature, geometryToArea } from './mapUtil';
+import { useDispatch, useSelector } from 'react-redux';
+import { geofencesActions } from '../store';
+import { useHistory } from 'react-router-dom';
 
 const draw = new MapboxDraw({
   displayControlsDefault: false,
@@ -13,8 +17,67 @@ const draw = new MapboxDraw({
 });
 
 const GeofenceEditMap = () => {
+  const dispatch = useDispatch();
+  const history = useHistory();
+
+  const geofences = useSelector(state => Object.values(state.geofences.items));
+
+  const refreshGeofences = async () => {
+    const response = await fetch('/api/geofences');
+    if (response.ok) {
+      dispatch(geofencesActions.refresh(await response.json()));
+    }
+  }
+
   useEffect(() => {
+    refreshGeofences();
+
     map.addControl(draw, 'top-left');
+
+    draw.deleteAll();
+    for (const geofence of geofences) {
+      draw.add(geofenceToFeature(geofence));
+    }
+
+    map.on('draw.create', async event => {
+      const feature = event.features[0];
+      const newItem = { name: '', area: geometryToArea(feature.geometry) };
+      draw.delete(feature.id);
+      const response = await fetch(`/api/geofences`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(newItem),
+      });
+      if (response.ok) {
+        const item = await response.json();
+        history.push(`/geofence/${item.id}`);
+      }
+    });
+
+    map.on('draw.delete', async event => {
+      const feature = event.features[0];
+      const response = await fetch(`/api/geofences/${feature.id}`, { method: 'DELETE' });
+      if (response.ok) {
+        refreshGeofences();
+      }
+    });
+
+    map.on('draw.update', async event => {
+      const feature = event.features[0];
+      const item = geofences.find(i => i.id === feature.id);
+      if (item) {
+        const updatedItem = { ...item, area: geometryToArea(feature.geometry) };
+        const response = await fetch(`/api/geofences/${feature.id}`, {
+          method: 'PUT',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(updatedItem),
+        });
+        if (response.ok) {
+          refreshGeofences();
+        }
+      }
+    });
+
     return () => map.removeControl(draw);
   }, []);
 
diff --git a/modern/src/map/mapUtil.js b/modern/src/map/mapUtil.js
index ef6ff99..67ce345 100644
--- a/modern/src/map/mapUtil.js
+++ b/modern/src/map/mapUtil.js
@@ -1,4 +1,4 @@
-import wellknown from 'wellknown';
+import { parse, stringify } from 'wellknown';
 import canvasTintImage from 'canvas-tint-image';
 import circle from '@turf/circle';
 
@@ -54,18 +54,22 @@ export const geofenceToFeature = (item) => {
     let coordinates = item.area.replace(/CIRCLE|\(|\)|,/g, " ").trim().split(/ +/);
     var options = { steps: 32, units: 'meters' };
     let polygon = circle([Number(coordinates[1]), Number(coordinates[0])], Number(coordinates[2]), options);
-    return { 
+    return {
+      id: item.id,
       type: 'Feature',
       geometry: polygon.geometry,
       properties: { name: item.name }
     };
   } else {
     return { 
+      id: item.id,
       type: 'Feature',
-      geometry: reverseCoordinates(wellknown(item.area)),
+      geometry: reverseCoordinates(parse(item.area)),
       properties: { name: item.name }
     };
   }
 }
 
-  
+export const geometryToArea = (geometry) => {
+  return stringify(reverseCoordinates(geometry));
+}
diff --git a/modern/src/store/geofences.js b/modern/src/store/geofences.js
index c5e5814..504b7d0 100644
--- a/modern/src/store/geofences.js
+++ b/modern/src/store/geofences.js
@@ -6,6 +6,10 @@ const { reducer, actions } = createSlice({
     items: {},
   },
   reducers: {
+    refresh(state, action) {
+      state.items = {};
+      action.payload.forEach(item => state.items[item['id']] = item);
+    },
     update(state, action) {
       action.payload.forEach(item => state.items[item['id']] = item);
     },