From e80311a1b42f64d20ebebe6da66c9af315a5c5b8 Mon Sep 17 00:00:00 2001
From: arielherself <ariel@arielherself.xyz>
Date: Mon, 27 Nov 2023 12:21:22 +0800
Subject: [PATCH] feat: support relocating

---
 .idea/workspace.xml  |   5 +-
 api/click.js         |  23 ++++++--
 src/Networking.js    |   1 -
 src/SimulateClick.js |   5 +-
 src/UMap.js          | 126 ++++++++++++++++++++++++++++++-------------
 5 files changed, 112 insertions(+), 48 deletions(-)

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 54668da..b934615 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -7,8 +7,8 @@
     <list default="true" id="3c7078e7-6f30-4d92-9696-11496f9e6dff" name="Changes" comment="">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/api/click.js" beforeDir="false" afterPath="$PROJECT_DIR$/api/click.js" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/App.js" beforeDir="false" afterPath="$PROJECT_DIR$/src/App.js" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/Networking.js" beforeDir="false" afterPath="$PROJECT_DIR$/src/Networking.js" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/SimulateClick.js" beforeDir="false" afterPath="$PROJECT_DIR$/src/SimulateClick.js" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/UMap.js" beforeDir="false" afterPath="$PROJECT_DIR$/src/UMap.js" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -83,7 +83,8 @@
       <workItem from="1700814808669" duration="47000" />
       <workItem from="1700822693197" duration="9493000" />
       <workItem from="1701004587189" duration="3578000" />
-      <workItem from="1701042611758" duration="3355000" />
+      <workItem from="1701042611758" duration="10222000" />
+      <workItem from="1701056208994" duration="2524000" />
     </task>
     <servers />
   </component>
diff --git a/api/click.js b/api/click.js
index 3203b14..5481d89 100644
--- a/api/click.js
+++ b/api/click.js
@@ -1,9 +1,22 @@
-const getArgs=(s)=>s.split('@@')
+import {post} from "../src/Networking";
 
 export default function handler(req,res){
-    const {body}=req;
-    res.status(200).json({
-        log: `Method: click\nArgs: ${body}\nStatus: returned the raw polylines`,
-        multipolyline: body,
+    const pts=JSON.parse(req.body);
+    const latRange=pts.map((row)=>row[0]),
+          lonRange=pts.map((row)=>row[1]);
+    const minlon=Math.min(...lonRange),minlat=Math.min(...latRange),
+          maxlon=Math.max(...lonRange),maxlat=Math.max(...latRange);
+    const request_uri=`https://www.overpass-api.de/api/interpreter?data=[out:json];node[highway](${minlat},${minlon},${maxlat},${maxlon});out;`;
+    const fetch_debug_response= fetch(request_uri).then((response)=>{
+        return response.json();
     });
+    fetch_debug_response.then((debug_response)=>{
+        res.status(200).json({
+            log: `Method: click\nArgs: ${pts}\nStatus: requested "${request_uri}", got response ${JSON.stringify(debug_response.elements)}`,
+            multipolyline: JSON.stringify(pts),
+        });
+    }).catch(e=>{
+        res.status(500);
+    });
+
 }
\ No newline at end of file
diff --git a/src/Networking.js b/src/Networking.js
index 6e6f2ce..9caf9b8 100644
--- a/src/Networking.js
+++ b/src/Networking.js
@@ -1,5 +1,4 @@
 export function post(type,method,args) {
-    let res = '';
     let ft = async () => {
         let response;
         if(type==='GET'){
diff --git a/src/SimulateClick.js b/src/SimulateClick.js
index 69e6249..661ed86 100644
--- a/src/SimulateClick.js
+++ b/src/SimulateClick.js
@@ -1,11 +1,12 @@
 import {Button, IconButton, ButtonGroup, Menu, MenuItem, Stack} from "@mui/joy";
 import ArrowDropDownIcon from '@mui/icons-material/ArrowDropDown';
 import React from "react";
-import {Add} from "@mui/icons-material";
+import {Add, LocationOn} from "@mui/icons-material";
 
-export default function SimulateClick({isCandEmpty}) {
+export default function SimulateClick({isLocated,isCandEmpty,relocator}) {
     return (
         <ButtonGroup buttonFlex={1} aria-label="flex button group" sx={{zIndex: 'modal'}}>
+            <Button disabled={isLocated} variant={'solid'} color={'warning'} startDecorator={<LocationOn />} onClick={relocator}>Relocate</Button>
             <Button disabled={isCandEmpty} variant={'solid'} color={'primary'} startDecorator={<Add />}>Add</Button>
         </ButtonGroup>
     );
diff --git a/src/UMap.js b/src/UMap.js
index 3e76601..2e5059d 100644
--- a/src/UMap.js
+++ b/src/UMap.js
@@ -5,26 +5,31 @@ import {useMapEvents} from 'react-leaflet/hooks';
 import {post} from './Networking';
 import {Autocomplete, CircularProgress, Sheet} from "@mui/joy";
 import SimulateClick from "./SimulateClick";
+import {NearMe} from "@mui/icons-material";
+
+const defaultZoomLevel=16;
+const defaultLocationName = 'Apple Park';
+const defaultLocation = [37.334835049999995, -122.01139165956805];
 
-const AppleParkLoc=[37.334835049999995,-122.01139165956805];
 class Markers extends Component {
+    // A location is a [lat,lon] pair.
     constructor(props) {
         super(props);
         this.state = {markers: [], candMarkers: [], candEmpty: true, polylines: []};
     }
 
     render() {
-        const fillBlueOptions = { fillColor: 'blue' };
-        const pl=this.state.polylines;
-        const mks=this.state.markers.map((p, i) => (
-            <Marker key={`m`+i} interactive={false} position={[p[0], p[1]]} opacity={1.0} />
+        const fillBlueOptions = {fillColor: 'blue'};
+        const pl = this.state.polylines;
+        const mks = this.state.markers.map((p, i) => (
+            <Marker key={`m` + i} interactive={false} position={[p[0], p[1]]} opacity={1.0}/>
         ));
-        const cmks=this.state.candMarkers.map((p, i) => (
-            <Marker key={`c`+i} interactive={false} position={[p[0], p[1]]} opacity={0.5} />
+        const cmks = this.state.candMarkers.map((p, i) => (
+            <Marker key={`c` + i} interactive={false} position={[p[0], p[1]]} opacity={0.5}/>
         ));
         return [
             ...mks.concat(cmks),
-            pl&&pl.length>1?<Polyline pathOptions={fillBlueOptions} positions={pl} />:<div/>
+            pl && pl.length > 1 ? <Polyline pathOptions={fillBlueOptions} positions={pl}/> : <div/>
         ];
     }
 
@@ -45,7 +50,7 @@ class Markers extends Component {
             candEmpty: false,
             polylines: prev.polylines,
         }));
-        this.getFocus();
+        this.getFocus(true);
     }
 
     clearMarkers() {
@@ -58,7 +63,7 @@ class Markers extends Component {
         this.getFocus();
     }
 
-    clearCandMarkers(){
+    clearCandMarkers() {
         this.setState((prev) => ({
             markers: prev.markers,
             candMarkers: [],
@@ -68,20 +73,23 @@ class Markers extends Component {
         this.getFocus();
     }
 
-    getFocus() {
-        let currentFocus=[];
+    getFocus(virtual=false) {
+        let currentFocus = [];
         if (this.state.candMarkers.length) {
-            currentFocus=this.state.candMarkers.at(-1);
+            currentFocus = this.state.candMarkers.at(-1);
         } else if (this.state.markers.length) {
-            currentFocus=this.state.markers.at(-1);
+            currentFocus = this.state.markers.at(-1);
         } else {
-            currentFocus=AppleParkLoc;
+            currentFocus = defaultLocation;
         }
         this.props.focusUpdater(currentFocus);
+        if(virtual){
+            this.props.locator(currentFocus);
+        }
     }
 
-    flushPolylines(pl){
-        this.setState((prev)=>({
+    flushPolylines(pl) {
+        this.setState((prev) => ({
             markers: prev.markers,
             candMarkers: prev.candMarkers,
             candEmpty: prev.candEmpty,
@@ -91,18 +99,21 @@ class Markers extends Component {
     }
 }
 
-function MapClickHandler({mks}) {
+function MapClickHandler({mks,focusUpdater,locator,locker}) {
     const map = useMapEvents({
         click: (e) => {
             map.locate();
-            const lat = e.latlng.lat, lng = e.latlng.lng;
+            const {lat,lng}=e.latlng;
             console.info(`Clicking on ${lat} ${lng}`);
             mks.current.addMarker(lat, lng);
-            post('POST','click', mks.current.state.markers).then((response)=>{
+            post('POST', 'click', mks.current.state.markers).then((response) => {
                 // TODO: real functionality
-                const pl=JSON.parse(response.multipolyline);
+                const pl = JSON.parse(response.multipolyline);
                 mks.current.flushPolylines(pl);
-            }).catch((e)=>{
+                focusUpdater([lat,lng]);
+                locator([lat,lng]);
+                locker(true);
+            }).catch((e) => {
                 console.error(e);
                 // location.reload();
             });
@@ -115,11 +126,21 @@ function MapClickHandler({mks}) {
     return null;
 }
 
-const LocationSearch = ({mks}) => {
+const LocationSearch = ({mks, focus, nb}) => {
     const [query, setQuery] = useState('');
     const [loading, setLoading] = useState(false);
     const [suggestedLocations, setSuggestedLocations] = useState([]);
     const [controller, setController] = useState(new AbortController());
+    const [everywhere,setEverywhere]=useState(false);
+
+    const SearchLogo=()=>{
+        const cf=()=>setEverywhere(!everywhere);
+        if(everywhere){
+            return <SearchIcon onClick={cf}/>;
+        } else{
+            return <NearMe onClick={cf}/>;
+        }
+    };
 
     useEffect(() => {
         return () => controller.abort();
@@ -137,7 +158,7 @@ const LocationSearch = ({mks}) => {
                 return;
             }
             const response = await fetch(
-                `https://nominatim.openstreetmap.org/search?format=json&q=${v}`,
+                `https://nominatim.openstreetmap.org/search?format=json&q=${v}${everywhere?'':' '+focus[0]+','+focus[1]}`,
                 {signal: newController.signal}
             );
             if (response.ok) {
@@ -164,40 +185,69 @@ const LocationSearch = ({mks}) => {
         }
     };
 
-    return <Autocomplete sx={{zIndex: 'snackbar'}} loading={loading} loadingText={"Searching..."} startDecorator={<SearchIcon/>}
-                         placeholder={'Find a location...'} onInputChange={handleSearch}
-                         options={suggestedLocations} isOptionEqualToValue={(option, value) => option.value === value.value} endDecorator={
+    return <Autocomplete sx={{zIndex: 'snackbar'}} loading={loading} loadingText={"Searching..."}
+                         startDecorator={<SearchLogo/>}
+                         placeholder={everywhere?'Search everywhere...':`Search near${nb}`} onInputChange={handleSearch}
+                         options={suggestedLocations}
+                         isOptionEqualToValue={(option, value) => option.value === value.value} endDecorator={
         loading ? (
             <CircularProgress size="sm" sx={{bgcolor: 'background.surface'}}/>
         ) : null
     }/>;
 };
 
-function ChangeView({center,zoom}){
-    const map=useMap();
-    map.setView(center,zoom);
+function ChangeView({center, zoom}) {
+    const map = useMap();
+    map.setView(center, zoom);
 }
 
 export default function UMap() {
     const markersRef = useRef(null);
-    const [focus, setFocus]=useState(AppleParkLoc);
-    const zoom=16;
-    const sf=(a)=>{setFocus(a);console.log(`triggered focus update, new focus is ${focus}`);};
+    const [focus, setFocus] = useState(defaultLocation);
+    const [located,setLocated]=useState(true);
+    const [locatedFocus,setLocatedFocus]=useState(defaultLocation);
+    const [nearbyName, setNearbyName] = useState(' ' + defaultLocationName);
+    const [zoom,setZoom] = useState(defaultZoomLevel);
+    const sf = (a) => {
+        setFocus(a);
+        console.log(`triggered focus update, new focus is ${focus}`);
+        const ft = fetch(`https://nominatim.openstreetmap.org/reverse?format=json&lat=${a[0]}&lon=${a[1]}&zoom=${zoom}&addressdetails=0`).then(response => response.json());
+        ft.then((response) => setNearbyName(' ' + response.name)).catch(() => setNearbyName('by'));
+    };
+    const relo=()=> {
+        sf(locatedFocus);
+        setLocated(true);
+    };
+    const ViewportChange = () => {
+        const map = useMapEvents({
+            dragend: (e) => {
+                const center = e.target.getCenter();
+                sf([center.lat, center.lng]);
+                setLocated(false);
+            },
+            zoomend: (e)=>{
+                setZoom(e.target.getZoom());
+                sf(focus);
+            }
+        });
+        return null;
+    };
     return (
         <Sheet>
-            <MapContainer style={{height: '100vh', width: '100vw',}} sx={{ zIndex: 'fab'}} center={focus} zoom={zoom}
+            <MapContainer style={{height: '100vh', width: '100vw',}} sx={{zIndex: 'fab'}} center={focus} zoom={zoom}
                           scrollWheelZoom={false}>
                 <ChangeView center={focus} zoom={zoom}/>
                 <TileLayer
                     attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
                     url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
                 />
-                <Markers ref={markersRef} focusUpdater={sf}/>
-                <MapClickHandler mks={markersRef}/>
+                <Markers ref={markersRef} focusUpdater={sf} locator={setLocatedFocus} />
+                <MapClickHandler mks={markersRef} focusUpdater={setFocus} locator={setLocatedFocus} locker={setLocated}/>
+                <ViewportChange/>
             </MapContainer>
             <Sheet sx={{position: 'absolute', top: '20px', right: '10vw', zIndex: 'modal'}}>
-                <SimulateClick isCandEmpty={markersRef.current?markersRef.current.state.candEmpty:true} />
-                <LocationSearch mks={markersRef}/>
+                <SimulateClick isLocated={located} relocator={relo} isCandEmpty={markersRef.current ? markersRef.current.state.candEmpty : true}/>
+                <LocationSearch nb={nearbyName} mks={markersRef} focus={focus}/>
             </Sheet>
         </Sheet>
     );