tracktracker/src/front/index.js

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JavaScript
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import network from "../data/network.json";
import * as simulation from "../data/simulation.js";
import * as map from "./map/index.js";
// Run courses simulation
const coursesSimulation = simulation.start();
let selectedCourse = null;
window.__courses = coursesSimulation.courses;
window.__network = network;
// Create display panel
const panel = document.querySelector("#panel");
const timeFormat = new Intl.DateTimeFormat("fr-FR", {
timeZone: "Europe/Paris",
timeStyle: "medium",
});
const timeToHTML = time => {
const delta = Math.ceil((time - Date.now()) / 1000);
if (delta <= 0) {
return `Imminent`;
} else if (delta < 60) {
return `${delta} s`;
} else {
return `${Math.floor(delta / 60)} min ${delta % 60} s`;
}
};
setInterval(() => {
const vehicleCount = Object.values(coursesSimulation.courses).length;
const movingVehicles = Object.values(coursesSimulation.courses).filter(
course => course.properties.speed > 0
).length;
let html = `
<dl>
<dt>Heure locale</dt>
<dd>${timeFormat.format(Date.now())}</dd>
</dl>
<dl>
<dt>Véhicules sur la carte</dt>
<dd>
${movingVehicles} en mouvement,
${vehicleCount - movingVehicles} à larrêt
</dd>
</dl>
`;
if (selectedCourse !== null && selectedCourse in coursesSimulation.courses) {
const course = coursesSimulation.courses[selectedCourse];
const stopToHTML = stopId => stopId in network.stops ?
network.stops[stopId].properties.name :
'<em>Arrêt inconnu</em>';
const passingsToHTML = passings => passings.map(([stopId, time]) => `
<tr>
<td>${stopToHTML(stopId)}</td>
<td>${timeFormat.format(time)}</td>
</tr>
`).join("\n");
const state = (
course.traveledDistance === 0 && course.speed === 0
? "stopped" : "moving"
);
let prevPassings = course.prevPassings;
if (state === "moving") {
prevPassings = prevPassings.concat([[course.departureStop, course.departureTime]]);
}
html += `
<dl>
<dt>ID</dt>
<dd>${selectedCourse}</dd>
<dt>Ligne</dt>
<dd>${course.line}</dd>
<dt>Destination</dt>
<dd>${stopToHTML(course.finalStop)}</dd>
<dt>État</dt>
<dd>${state === "moving"
? `Entre ${stopToHTML(course.departureStop)}
et ${stopToHTML(course.arrivalStop)}`
: `À larrêt ${stopToHTML(course.departureStop)}`}</dd>
${state === "moving" ? `
<dt>Arrivée dans</dt>
<dd>${timeToHTML(course.arrivalTime - 10000)}</dd>
<dt>Distance parcourue</dt>
<dd>${Math.ceil(course.traveledDistance)} m</dd>
<dt>Vitesse</dt>
<dd>${Math.ceil(course.speed * 3600)} km/h</dd>
` : `
<dt>Départ dans</dt>
<dd>${timeToHTML(course.departureTime)}</dd>
`}
</dl>
<h2>Arrêts précédents</h2>
<table>${passingsToHTML(prevPassings)}</table>
<h2>Arrêts suivants</h2>
<table>${passingsToHTML(course.nextPassings)}</table>
`;
}
panel.innerHTML = html;
}, 1000);
// Create the network and courses map
window.__map = map.create(/* map = */ "map", coursesSimulation, courses => {
const index = courses.indexOf(selectedCourse);
if (courses.length === 0) {
selectedCourse = null;
} else if (index === -1) {
selectedCourse = courses[0];
} else {
selectedCourse = courses[(index + 1) % courses.length];
}
});