From 142db3fffd5c290c96c1d5fb974027c27c4cb1d3 Mon Sep 17 00:00:00 2001
From: amy-corson-ibigroup
 <115499534+amy-corson-ibigroup@users.noreply.github.com>
Date: Fri, 13 Dec 2024 14:17:04 -0600
Subject: [PATCH] Only update currentPosition if the user has moved

---
 lib/components/app/responsive-webapp.js | 50 ++++++++++++++++++-------
 1 file changed, 36 insertions(+), 14 deletions(-)

diff --git a/lib/components/app/responsive-webapp.js b/lib/components/app/responsive-webapp.js
index ee4c3c684..2d9c165b6 100644
--- a/lib/components/app/responsive-webapp.js
+++ b/lib/components/app/responsive-webapp.js
@@ -55,6 +55,23 @@ class ResponsiveWebapp extends Component {
 
   /** Lifecycle methods **/
 
+  // Check if the position has changed enough to update the currentPosition
+  // (prevent constant updates in nearby view)
+  positionShouldUpdate = (position) => {
+    const { currentPosition } = this.props
+    if (!currentPosition.coords) return true
+    const latChanged =
+      Math.abs(
+        position?.coords?.latitude - currentPosition?.coords?.latitude
+      ) >= 0.001
+    const lonChanged =
+      Math.abs(
+        position?.coords?.longitude - currentPosition?.coords?.longitude
+      ) >= 0.001
+
+    return latChanged || lonChanged
+  }
+
   /* eslint-disable-next-line complexity */
   componentDidUpdate(prevProps) {
     const {
@@ -69,6 +86,7 @@ class ResponsiveWebapp extends Component {
       map,
       matchContentToUrl,
       query,
+      receivedPositionResponse,
       setLocationToCurrent,
       setMapCenter
     } = this.props
@@ -119,6 +137,21 @@ class ResponsiveWebapp extends Component {
       }
     }
 
+    navigator.geolocation.watchPosition(
+      // On success
+      (position) => {
+        const shouldUpdate = this.positionShouldUpdate(position)
+        if (shouldUpdate) {
+          receivedPositionResponse({ position })
+        }
+      },
+      // On error
+      (error) => {
+        console.log('error in watchPosition', error)
+      },
+      // Options
+      { enableHighAccuracy: true }
+    )
     // If the path changes (e.g., via a back button press) check whether the
     // main content needs to switch between, for example, a viewer and a search.
     if (!isEqual(location.pathname, prevProps.location.pathname)) {
@@ -154,7 +187,6 @@ class ResponsiveWebapp extends Component {
       map,
       matchContentToUrl,
       parseUrlQueryString,
-      receivedPositionResponse,
       setNetworkConnectionLost
     } = this.props
     // Add on back button press behavior.
@@ -180,18 +212,6 @@ class ResponsiveWebapp extends Component {
       // Test location availability on load
       getCurrentPosition(intl)
       // Also, watch for changes in position on mobile
-      navigator.geolocation.watchPosition(
-        // On success
-        (position) => {
-          receivedPositionResponse({ position })
-        },
-        // On error
-        (error) => {
-          console.log('error in watchPosition', error)
-        },
-        // Options
-        { enableHighAccuracy: true }
-      )
     }
     // Handle routing to a specific part of the app (e.g. stop viewer) on page
     // load. (This happens prior to routing request in case special routerId is
@@ -426,10 +446,12 @@ class RouterWrapperWithAuth0 extends Component {
 }
 
 const mapStateToWrapperProps = (state) => {
-  const { homeTimezone, map, persistence, reactRouter } = state.otp.config
+  const { homeTimezone, location, map, persistence, reactRouter } =
+    state.otp.config
   return {
     auth0Config: getAuth0Config(persistence),
     autoFly: map.autoFlyOnTripFormUpdate,
+    currentPosition: location?.currentPosition,
     defaultLocale: getDefaultLocale(state.otp.config, state.user.loggedInUser),
     homeTimezone,
     locale: state.otp.ui.locale,