first functional commit
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# logbook2map
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## Quick Start
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```bash
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python3 -m http.server -b "::" 8030
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```
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Go to https://8030.code.louis.hostux.fr
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>logbook2map</title>
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<link rel="stylesheet" href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css">
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<style>
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body, html {
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margin: 0;
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padding: 0;
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width: 100vw;
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height: 100vh;
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overflow: hidden;
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}
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#map {
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width: 100%;
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height: 100%;
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}
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#input_modal {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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background-color: rgba(0, 0, 0, 0.5);
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display: flex;
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justify-content: center;
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align-items: center;
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display: none;
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textarea {
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width: 80%;
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height: 80%;
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font-size: 1.5em;
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min-width: 20em;
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min-height: 20em;
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max-width: 40em;
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max-height: 40em;
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}
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}
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</style>
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</head>
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<body>
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<div id="map"></div>
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<div id="input_modal">
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<textarea placeholder="ICAO_departure;ICAO_destination Validate with Ctrl+Enter Load new data with Ctrl+O"></textarea>
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</div>
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<script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
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<script>
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const osmStyle = {
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"version": 8,
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"sources": {
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"osm": {
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"type": "raster",
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"tiles": ["https://a.tile.openstreetmap.org/{z}/{x}/{y}.png"],
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"tileSize": 256,
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"attribution": "© OpenStreetMap Contributors",
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"maxzoom": 19
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}
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},
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"layers": [
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{
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"id": "osm",
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"type": "raster",
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"source": "osm" // This must match the source key above
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}
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]
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};
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var map = new maplibregl.Map({
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container: 'map', // container id
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style: osmStyle, // style URL
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center: [17.97, 57.91], // starting position [lng, lat]
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zoom: 3.7 // starting zoom
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});
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function _updateMap(csvData, airportsData) {
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const lines = csvData.split('\n');
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const features = lines.map(line => {
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const [from, to] = line.split(',');
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const fromAirport = airportsData[from];
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const toAirport = airportsData[to];
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if(!fromAirport) { alert(`Airport ${from} not found`); return; }
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if(!toAirport) { alert(`Airport ${to} not found`); return; }
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const fromLongitude = parseFloat(fromAirport.longitude);
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const fromLatitude = parseFloat(fromAirport.latitude);
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const toLongitude = parseFloat(toAirport.longitude);
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const toLatitude = parseFloat(toAirport.latitude);
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return {
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type: 'Feature',
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properties: {
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from,
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to
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},
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geometry: {
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type: 'LineString',
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coordinates: [
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[fromLongitude, fromLatitude],
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[toLongitude, toLatitude]
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]
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}
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};
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});
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map.addSource('routes', {
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type: 'geojson',
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data: {
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type: 'FeatureCollection',
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features
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}
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});
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map.addLayer({
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id: 'routes',
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type: 'line',
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source: 'routes',
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layout: {
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'line-join': 'round',
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'line-cap': 'round'
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},
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paint: {
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'line-color': '#bd34eb',
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'line-width': 4
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}
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});
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}
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function updateMap(csvData) {
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// download https://davidmegginson.github.io/ourairports-data/airports.csv if not locally available
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const request = indexedDB.open('my_database', 1);
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request.onupgradeneeded = function(event) {
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const db = event.target.result;
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const objectStore = db.createObjectStore('airports');
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};
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request.onerror = function(event) { alert('Error while opening database:\n' + event.target.error); };
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request.onsuccess = function(event) {
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const db = event.target.result;
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const transaction = db.transaction(['airports'], 'readwrite');
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const objectStore = transaction.objectStore('airports');
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const getRequest = objectStore.get('airports');
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getRequest.onerror = function(event) { alert("Error getting data:\n" + event.target.error); };
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getRequest.onsuccess = function(event) {
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if (!event.target.result) {
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// Data not found, fetch and store it
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fetch('https://davidmegginson.github.io/ourairports-data/airports.csv')
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.then(response => response.text())
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.then(data => {
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console.info('Downloaded airports.csv, parsing the data...');
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const airports = {};
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for(const airport of data.split('\n')) {
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const [_id, ident, _type, name, latitude, longitude] = airport.split(',');
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if(!ident) continue;
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airports[ident.replace(/^"|"$/g, '')] = { name, latitude, longitude };
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}
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const transaction = db.transaction(['airports'], 'readwrite');
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const objectStore = transaction.objectStore('airports');
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objectStore.put(airports, 'airports');
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_updateMap(csvData, airports);
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})
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.catch(error => { alert('Error while downloading airports.csv: \n' + error); });
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} else {
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console.log('Data found in local storage!');
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_updateMap(csvData, event.target.result);
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}
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};
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};
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}
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function showInputModal() {
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document.getElementById('input_modal').style.display = 'flex';
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const textarea = document.querySelector('#input_modal textarea');
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textarea.focus();
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textarea.addEventListener('keydown', event => {
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if(event.ctrlKey && event.key === 'Enter') {
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const csvData = textarea.value;
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updateMap(csvData);
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document.getElementById('input_modal').style.display = 'none';
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}
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});
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}
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showInputModal();
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document.addEventListener('keydown', event => {
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if(event.ctrlKey && event.key === 'o') {
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event.preventDefault();
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showInputModal();
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}
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});
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</script>
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</body>
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</html>
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