113 lines
3.6 KiB
JavaScript
113 lines
3.6 KiB
JavaScript
// Enable delays
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const delay = ms => new Promise(res => setTimeout(res, ms));
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init()
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/* Supporting Functions */
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async function init() {
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var stn = await getQuery("stn");
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log(`init: Looking up: ${stn}`);
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var sv = await getQuery("sv");
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log(`init: Staff Version: ${sv}`);
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if (sv === 'true') {
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log("init: Staff Version not supported yet.")
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log("init: Unable to proceed.")
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} else {
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try {
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var data = await publicLdb(stn)
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log("init: Fetched LDB Data")
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parseLdb(data)
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} catch (err) {
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var data = null
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log("init: Unable to fetch LDB data")
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}
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}
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}
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async function getQuery(param) {
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var params = new URLSearchParams(window.location.search)
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var query = params.get(param)
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if (query) {
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return query
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} else {
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return 'false'
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}
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}
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async function publicLdb(stn) {
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var url = `${window.location.origin}/api/v1/ldb/${stn}`;
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var resp = await fetch(url);
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return await resp.json();
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}
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async function setHeaders(title,time) {
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var prefix = `OwlBoard - `
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document.title = `${prefix}${title}`
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document.getElementById("station_name").innerHTML = title
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document.getElementById("fetch_time").innerHTML = time.toLocaleTimeString()
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}
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async function parseLdb(data) {
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if (data.ERROR == "NOT_FOUND") { // Station not found
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clearLoading();
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document.getElementById("error_notice").style = "display: block;";
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document.getElementById("err_not_found").style = "display: block;";
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setHeaders("Not Found",new Date())
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} else if (data == false) { // No data for station
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clearLoading();
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document.getElementById("error_notice").style = "display: block;";
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document.getElementById("err_no_data").style = "display:block;";
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setHeaders("No Data",new Date())
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} else if (data == "err") { // Connection Error
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clearLoading();
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document.getElementById("error_notice").style = "display: block;";
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document.getElementById("err_conn").style = "display: block;";
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setHeaders("Connection Error",new Date())
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await delay(5000);
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log(`parseLdb: Waited five seconds, reloading`)
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location.reload()
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} else {
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buildPage(data);
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}
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}
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// Build and Display Functions
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async function buildPage(data) {
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var stationName = data.GetStationBoardResult.locationName;
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log(`buildPage: Data ready for ${stationName}`);
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var generateTime = new Date(await data.GetStationBoardResult.generatedAt);
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log(`buildPage: Data prepared at ${generateTime.toLocaleString()}`)
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setHeaders(stationName, generateTime);
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// Check for notices and if true pass to function
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if (data.GetStationBoardResult.nrccMessages) {
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displayNotices(data.GetStationBoardResult.nrccMessages.message)
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}
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if (typeof data.GetStationBoardResult.trainServices == 'undefined') {
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displayNoTrains()
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} else {
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// Function here to Parse train services and display.
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}
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}
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async function displayNotices(notices) {
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// Input: data.GetStationBoardResult.nrccMessages.messages
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// Processing: For each message, create a <p> inside #notices.
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// If there is more than one notice, scroll between them.
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// Output: Only to DOM.
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//document.getElementById("notices").innerHTML = notices;
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}
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async function displayNoTrains() {
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document.getElementById('no_services').style = "display: block;";
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clearLoading();
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}
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async function displayTrains() {
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return
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}
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// Log Helper
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function log(msg) {
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var time = new Date().toISOString();
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console.log(`${time} - ${msg}`)
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} |