Add leaflet-polylinedecorator

mapper/package.json

@@ -8,6 +8,7 @@
     "@testing-library/user-event": "^12.1.10",
     "axios": "^0.21.1",
     "leaflet": "^1.9.4",
+    "leaflet-polylinedecorator": "^1.6.0",
     "moment": "^2.29.1",
     "moment-timezone": "^0.5.34",
     "react": "^18.0.0",

mapper/src/App.css

@@ -60,6 +60,7 @@ h2 {
 
 .submenu h2 {
 	color: white;
+	font-size: 1.1em;
 }
 
 .submenu-header {
@@ -82,6 +83,7 @@ h2 {
 	color: white;
 	border-radius: 0;
 	border: 0;
+	font-family: sans-serif;
 }
 
 .menu button:hover {
@@ -96,6 +98,67 @@ h2 {
 	background-color: #666;
 }
 
+.submenu-checkbox-label {
+	/* Make it look like a button */
+	background-color: #666;
+	height: 2.5rem;
+	font-size: 1.5rem;
+	color: white;
+	cursor: pointer;
+	font-family: sans-serif;
+
+	/* Center content */
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: 0.5rem;
+}
+
+.submenu-checkbox-label:hover {
+	background-color: #999;
+}
+
+.submenu-checkbox-label input[type="checkbox"] {
+	/* Reset default styles */
+	appearance: none;
+	-webkit-appearance: none;
+	-moz-appearance: none;
+	background-color: transparent;
+	margin: 0;
+
+	/* Custom checkbox style */
+	font: inherit;
+	color: currentColor;
+	width: 0.75em;
+	height: 0.75em;
+	border: 0.1em solid currentColor;
+	border-radius: 0;
+	transform: translateY(-0.075em);
+
+	/* For the checkmark */
+	display: grid;
+	place-content: center;
+}
+
+/* Fix for Firefox Mobile rendering a black background on checked state,
+   especially when extensions like Dark Reader are active. */
+.submenu-checkbox-label input[type="checkbox"]:checked {
+	background-color: transparent !important;
+}
+
+.submenu-checkbox-label input[type="checkbox"]::before {
+	content: "";
+	width: 0.75em;
+	height: 0.75em;
+	transform: scale(0);
+	transition: 120ms transform ease-in-out;
+	background-color: white;
+}
+
+.submenu-checkbox-label input[type="checkbox"]:checked::before {
+	transform: scale(1);
+}
+
 .datepicker .rdtPicker {
 	background: none;
 	border: none;
@@ -109,3 +172,24 @@ h2 {
 	background-color: #999!important;
 }
 
+.submenu-actions {
+	padding-top: 0.5rem;
+	display: flex;
+	flex-direction: column;
+	gap: 0.5rem;
+}
+
+.submenu-group {
+	display: flex;
+	align-items: center;
+	gap: 0.5rem;
+}
+
+.submenu-group span {
+	color: white;
+	flex-shrink: 0;
+}
+
+.submenu-group button {
+	flex-grow: 1;
+}

mapper/src/App.js

@@ -1,6 +1,7 @@
-import React, { useState, useEffect } from 'react';
+import React, { useState, useEffect, useRef, useMemo } from 'react';
 import * as leaflet from 'leaflet';
-import { MapContainer, Polyline, TileLayer, useMap } from 'react-leaflet';
+import 'leaflet-polylinedecorator';
+import { MapContainer, TileLayer, useMap, useMapEvents } from 'react-leaflet';
 import Datetime from 'react-datetime';
 import 'react-datetime/css/react-datetime.css';
 import axios from 'axios';
@@ -16,7 +17,7 @@ import 'react-range-slider-input/dist/style.css';
 const durations = [
 	{id: 0, len: 'Day', win: '1m', full: '1 min', delta: [1, 'days'], format: 'HH', num: 1440, secs: 60},
 	{id: 1, len: 'Week', win: '3m', full: '3 min', delta: [7, 'days'], format: 'HH', num: 3360, secs: 180},
-	{id: 2, len: 'Month', win: '10m', full: '10 min', delta: [1, 'months'], format: 'D', num: 4380, secs: 600},
+	{id: 2, len: 'Month', shortLen: 'Mth', win: '10m', full: '10 min', delta: [1, 'months'], format: 'D', num: 4380, secs: 600},
 	{id: 3, len: 'Year', win: '2h', full: '2 hour', delta: [1, 'years'], format: 'M/D', num: 4380, secs: 7200},
 ];
 
@@ -38,7 +39,7 @@ const parseSlider = (end, duration, slider) => {
 
 //async function sha256(source) {
 //	const sourceBytes = new TextEncoder().encode(source);
-//	const digest = await crypto.subtle.digest('SHA-256', sourceBytes);
+//	const digest = await crypto.subtle.digest('SHA-26', sourceBytes);
 //	const resultBytes = [...new Uint8Array(digest)];
 //	return resultBytes.map(x => x.toString(16).padStart(2, '0')).join('');
 //}
@@ -70,14 +71,161 @@ function useSensor(measurement, name, end, duration) {
 	return [data, loading];
 };
 
+function MapViewManager({ coords, mapState, setMapState, loading, setSubmenu }) {
+    const map = useMap();
 
+    // Effect 1: Handle map events (pan/zoom) from the user
+    useMapEvents({
+        mousedown: () => setSubmenu(false),
+        zoomstart: () => setSubmenu(false),
+        moveend: () => {
+            const center = map.getCenter();
+            const newZoom = map.getZoom();
+            const newCenter = [center.lat, center.lng];
 
-function Map({end, duration, slider}) {
+            setMapState(prevState => {
+                // A small tolerance for floating point comparisons
+                const tolerance = 1e-5;
+                if (!prevState.center) {
+                    return { zoom: newZoom, center: newCenter };
+                }
+
+                const zoomChanged = prevState.zoom !== newZoom;
+                const centerChanged = Math.abs(prevState.center[0] - newCenter[0]) > tolerance ||
+                                    Math.abs(prevState.center[1] - newCenter[1]) > tolerance;
+
+                if (zoomChanged || centerChanged) {
+                    return { zoom: newZoom, center: newCenter };
+                }
+
+                // If nothing changed, return the previous state to prevent a re-render
+                return prevState;
+            });
+        },
+    });
+
+    // Effect 2: Handle programmatic view changes (refitting or setting from state)
+    useEffect(() => {
+        // Don't do anything while loading new data
+        if (loading) return;
+
+        // Case A: A refit is needed (signaled by null center)
+        if (mapState.center === null && coords.length > 0) {
+            const bounds = leaflet.latLngBounds(coords);
+            if (bounds.isValid()) {
+                map.fitBounds(bounds);
+                // After fitting, the 'moveend' event will fire and update the state naturally.
+            }
+        }
+        // Case B: A center is set in the state, ensure map is synced
+        else if (mapState.center) {
+            const currentCenter = map.getCenter();
+            const currentZoom = map.getZoom();
+            if (currentCenter.lat !== mapState.center[0] || currentCenter.lng !== mapState.center[1] || currentZoom !== mapState.zoom) {
+                map.setView(mapState.center, mapState.zoom);
+            }
+        }
+    }, [coords, mapState, loading, map, setMapState]);
+
+    return null;
+}
+
+function PolylineWithArrows({ coords, showDirection }) {
+    const map = useMap();
+    const polylineRef = useRef(null);
+    const decoratorRef = useRef(null);
+
+    useEffect(() => {
+        if (polylineRef.current) {
+            map.removeLayer(polylineRef.current);
+        }
+        if (decoratorRef.current) {
+            map.removeLayer(decoratorRef.current);
+        }
+
+        if (coords && coords.length > 1) {
+            const polyline = leaflet.polyline(coords, { color: 'blue' });
+            polylineRef.current = polyline;
+            map.addLayer(polyline);
+
+            if (showDirection) {
+                const decorator = leaflet.polylineDecorator(polyline, {
+                    patterns: [
+                        {
+                            offset: 25,
+                            repeat: 100,
+                            symbol: leaflet.Symbol.arrowHead({
+                                pixelSize: 10,
+                                polygon: false,
+                                pathOptions: {
+                                    stroke: true,
+                                    color: 'blue',
+                                    weight: 3
+                                }
+                            })
+                        }
+                    ]
+                });
+                decoratorRef.current = decorator;
+                map.addLayer(decorator);
+            } else {
+                decoratorRef.current = null;
+            }
+        }
+
+        return () => {
+            if (polylineRef.current) {
+                map.removeLayer(polylineRef.current);
+            }
+            if (decoratorRef.current) {
+                map.removeLayer(decoratorRef.current);
+            }
+        };
+    }, [coords, map, showDirection]);
+
+    return null;
+}
+
+function Map({end, duration, slider, mapState, setMapState, setSubmenu, showDirection}) {
 	const [data, loading] = useSensor('owntracks', 'OwnTracks', end, duration);
 
-	const range = parseSlider(end, duration, slider);
+	const range = useMemo(() => parseSlider(end, duration, slider), [end, duration, slider]);
 
-	const coords = data.length ? data.filter(x => !range || (x.time >= range[0] && x.time <= range[1])).map(({ lat, lon }) => [lat, lon]).filter(([lat, lon]) => lat !== null || lon !== null) : [];
+	const coords = useMemo(() => {
+		// 1. Guard against invalid top-level data
+		if (!Array.isArray(data)) {
+			return [];
+		}
+
+		const result = [];
+		const [startTime, endTime] = range;
+
+		// 2. Loop through the data
+		for (const point of data) {
+			// 3. Guard against malformed points
+			if (!point || typeof point !== 'object') {
+				continue;
+			}
+
+			const { lat, lon, time } = point;
+
+			// 4. Guard against invalid time
+			if (typeof time !== 'string' || time.length === 0) {
+				continue;
+			}
+
+			// 5. Guard against invalid coordinates (null, undefined, NaN, non-number)
+			if (typeof lat !== 'number' || typeof lon !== 'number' || !isFinite(lat) || !isFinite(lon)) {
+				continue;
+			}
+
+			// 6. Now that all data is known to be valid, filter by time
+			if (time >= startTime && time <= endTime) {
+				result.push([lat, lon]);
+			}
+		}
+		return result;
+	}, [data, range]);
 
 	const handleSubmit = (e) => {
 		e.preventDefault();
@@ -91,13 +239,16 @@ function Map({end, duration, slider}) {
 				<p>Loading...</p>
 			:
 				coords.length ?
-					<MapContainer center={coords[coords.length-1]} zoom={13} scrollWheelZoom={true} style={{ width: '100%', height: 'calc(100vh - 2.5rem)' }}>
+					(
+						<MapContainer center={mapState.center || [0, 0]} zoom={mapState.zoom} scrollWheelZoom={true} style={{ width: '100%', height: 'calc(100vh - 2.5rem)' }}>
+							<MapViewManager coords={coords} mapState={mapState} setMapState={setMapState} loading={loading} setSubmenu={setSubmenu} />
 							<TileLayer
 								attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
 								url='https://maptiles.p.rapidapi.com/en/map/v1/{z}/{x}/{y}.png?rapidapi-key=4375b0b1d8msh0c9e7fa3efb9adfp1769dfjsnd603a0387fea'
 							/>
-						<Polyline pathOptions={{color: 'blue'}} positions={coords} />
+							<PolylineWithArrows coords={coords} showDirection={showDirection} />
 						</MapContainer>
+					)
 				:
 					<>
 						<p>No data</p>
@@ -112,8 +263,7 @@ function Map({end, duration, slider}) {
 	);
 }
 
-function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
-	const [submenu, setSubmenu] = useState(false);
+function Menu({duration, setDuration, end, setEnd, slider, setSlider, submenu, setSubmenu, showDirection, setShowDirection}) {
 	const [showRange, setShowRange] = useState(false);
 
 	const chooseDuration = (x) => {
@@ -135,12 +285,20 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 		setEnd(moment());
 	};
 
+	const chooseMidnight = () => {
+		setSubmenu(false);
+		setSlider([0, duration.num]);
+		setEnd(moment().startOf('day'));
+	};
+
 	const rangeStart = (x) => {
+		setSubmenu(false);
 		setEnd(moment(range[0]).add(...duration.delta));
 		setSlider([0, duration.num]);
 	};
 
 	const rangeEnd = (x) => {
+		setSubmenu(false);
 		setEnd(moment(range[1]));
 		setSlider([0, duration.num]);
 	};
@@ -157,6 +315,10 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 		setEnd(prevEnd => moment(prevEnd).subtract(...duration.delta));
 	}
 
+	const resetToDefaults = () => {
+		window.location.href = window.location.pathname;
+	};
+
 	const range = parseSlider(end, duration, slider);
 
 	const rangeTime = (x) => {
@@ -167,10 +329,42 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 		}
 	};
 
+	const rangeDelta = (range) => {
+		const start = moment(range[0]);
+		const end = moment(range[1]);
+		const diff = moment.duration(end.diff(start));
+
+		const parts = [];
+
+		const years = diff.years();
+		if (years > 0) parts.push(`${years} year${years > 1 ? 's' : ''}`);
+
+		const months = diff.months();
+		if (months > 0) parts.push(`${months} month${months > 1 ? 's' : ''}`);
+
+		const days = diff.days();
+		if (days > 0) parts.push(`${days} day${days > 1 ? 's' : ''}`);
+
+		const hours = diff.hours();
+		if (hours > 0) parts.push(`${hours} hour${hours > 1 ? 's' : ''}`);
+
+		const minutes = diff.minutes();
+		if (minutes > 0) parts.push(`${minutes} minute${minutes > 1 ? 's' : ''}`);
+
+		const seconds = diff.seconds();
+		if (seconds > 0) parts.push(`${seconds} second${seconds > 1 ? 's' : ''}`);
+
+		if (parts.length === 0) {
+			return '0 seconds';
+		}
+
+		return parts.join(', ');
+	};
+
 	return (
 		<div className='menu'>
 			{(showRange || !!submenu) && <div className='range'>
-				{rangeTime(range[0])} - {rangeTime(range[1])}
+				{rangeTime(range[0])} - {rangeTime(range[1])} <span style={{ whiteSpace: 'nowrap' }}>({rangeDelta(range)})</span>
 			</div>}
 
 			<div className='time-slider'>
@@ -203,9 +397,18 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 								/>
 							</div>
 
-							<button onClick={chooseNow}>Jump to Now</button>
-							<button onClick={rangeStart}>Shift to Range Start</button>
-							<button onClick={rangeEnd}>Shift to Range End</button>
+							<div className='submenu-actions'>
+								<div className='submenu-group'>
+									<span>Jump to:</span>
+									<button onClick={chooseNow}>Now</button>
+									<button onClick={chooseMidnight}>Midnight</button>
+								</div>
+								<div className='submenu-group'>
+									<span>Shift to:</span>
+									<button onClick={rangeStart}>Range Start</button>
+									<button onClick={rangeEnd}>Range End</button>
+								</div>
+							</div>
 						</>
 					}
 
@@ -221,6 +424,24 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 							)}
 						</>
 					}
+
+					{submenu === 'misc' &&
+						<>
+							<div className='submenu-header'>
+								<h2>Misc</h2>
+								<button onClick={() => setSubmenu(false)}>×</button>
+							</div>
+							<label className="submenu-checkbox-label">
+								<input
+									type="checkbox"
+									checked={showDirection}
+									onChange={e => setShowDirection(e.target.checked)}
+								/>
+								Show direction
+							</label>
+							<button onClick={resetToDefaults}>Reset to defaults</button>
+						</>
+					}
 				</div>
 			}
 
@@ -231,14 +452,21 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 					onClick={() => setSubmenu('end')}
 					className={submenu === 'end' ? 'active' : ''}
 				>
-					{moment(end).subtract(duration.delta[0], duration.delta[1]).format('ddd MMM DD')}
+					{moment(end).subtract(duration.delta[0], duration.delta[1]).format('dd MMM DD')}
+				</button>
+
+				<button
+					onClick={() => setSubmenu('misc')}
+					className={submenu === 'misc' ? 'active' : ''}
+				>
+					☰
 				</button>
 
 				<button
 					onClick={() => setSubmenu('duration')}
 					className={submenu === 'duration' ? 'active' : ''}
 				>
-					{duration.len} / {duration.win}
+					{(duration.shortLen || duration.len)} / {duration.win}
 				</button>
 
 				<button onClick={() => next()}>&gt;</button>
@@ -248,9 +476,60 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 }
 
 function App() {
-	const [duration, setDuration] = useState(durations[0]);
-	const [end, setEnd] = useState(moment());
-	const [slider, setSlider] = useState([0, duration.num]);
+	const params = new URLSearchParams(window.location.search);
+	const initialDurationId = params.get('duration');
+	const initialEndTimestamp = params.get('end');
+	const initialSliderValue = params.get('slider');
+	const initialLat = params.get('lat');
+	const initialLng = params.get('lng');
+	const initialZoom = params.get('zoom');
+	const initialShowDirection = params.get('showDirection') === 'true';
+
+	const initialDuration = (initialDurationId && durations[parseInt(initialDurationId, 10)]) ? durations[parseInt(initialDurationId, 10)] : durations[0];
+	const initialEnd = initialEndTimestamp ? moment.unix(initialEndTimestamp) : moment();
+	const initialSlider = initialSliderValue ? initialSliderValue.split(',').map(Number) : [0, initialDuration.num];
+
+	const [duration, setDuration] = useState(initialDuration);
+	const [end, setEnd] = useState(initialEnd);
+	const [slider, setSlider] = useState(initialSlider);
+	const [mapState, setMapState] = useState({
+		center: (initialLat && initialLng) ? [parseFloat(initialLat), parseFloat(initialLng)] : null,
+		zoom: initialZoom ? parseInt(initialZoom, 10) : 13,
+	});
+	const [submenu, setSubmenu] = useState(false);
+	const [showDirection, setShowDirection] = useState(initialShowDirection);
+
+	const isInitialMount = useRef(true);
+	useEffect(() => {
+		if (isInitialMount.current) {
+			isInitialMount.current = false;
+		} else {
+			// Reset map center to trigger a refit when new data arrives
+			setMapState(prev => ({ ...prev, center: null }));
+		}
+	}, [end, duration]);
+
+	useEffect(() => {
+		const handler = setTimeout(() => {
+			const params = new URLSearchParams();
+			params.set('duration', duration.id);
+			params.set('end', end.unix());
+			params.set('slider', slider.join(','));
+			if (showDirection) {
+				params.set('showDirection', 'true');
+			}
+			if (mapState.center) {
+				params.set('lat', mapState.center[0].toFixed(5));
+				params.set('lng', mapState.center[1].toFixed(5));
+				params.set('zoom', mapState.zoom);
+			}
+			window.history.replaceState({}, '', `${window.location.pathname}?${params.toString()}`);
+		}, 500);
+
+		return () => {
+			clearTimeout(handler);
+		};
+	}, [duration, end, slider, mapState, showDirection]);
 
 	return (
 		<div>
@@ -261,12 +540,20 @@ function App() {
 				setEnd={setEnd}
 				slider={slider}
 				setSlider={setSlider}
+				submenu={submenu}
+				setSubmenu={setSubmenu}
+				showDirection={showDirection}
+				setShowDirection={setShowDirection}
 			/>
 
 			<Map
 				end={end}
 				duration={duration}
 				slider={slider}
+				mapState={mapState}
+				setMapState={setMapState}
+				setSubmenu={setSubmenu}
+				showDirection={showDirection}
 			/>
 		</div>
 	);

mapper/yarn.lock

@@ -7308,6 +7308,18 @@ last-call-webpack-plugin@^3.0.0:
     lodash "^4.17.5"
     webpack-sources "^1.1.0"
 
+leaflet-polylinedecorator@^1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/leaflet-polylinedecorator/-/leaflet-polylinedecorator-1.6.0.tgz#9ef79fd1b5302d67b72efe959a8ecd2553f27266"
+  integrity sha512-kn3krmZRetgvN0wjhgYL8kvyLS0tUogAl0vtHuXQnwlYNjbl7aLQpkoFUo8UB8gVZoB0dhI4Tb55VdTJAcYzzQ==
+  dependencies:
+    leaflet-rotatedmarker "^0.2.0"
+
+leaflet-rotatedmarker@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/leaflet-rotatedmarker/-/leaflet-rotatedmarker-0.2.0.tgz#4467f49f98d1bfd56959bd9c6705203dd2601277"
+  integrity sha512-yc97gxLXwbZa+Gk9VCcqI0CkvIBC9oNTTjFsHqq4EQvANrvaboib4UdeQLyTnEqDpaXHCqzwwVIDHtvz2mUiDg==
+
 leaflet@^1.9.4:
   version "1.9.4"
   resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.9.4.tgz#23fae724e282fa25745aff82ca4d394748db7d8d"