First commit

src/extension.ts

@@ -0,0 +1,65 @@
+import * as vscode from 'vscode';
+import { getVisitorCount } from './http';
+import { initStatusBar, refresh } from './statusBar';
+
+const OPEN = 4;
+const CLOSE = 23;
+const INTERVAL_MS = 2 * 60 * 1000;
+
+let timer: NodeJS.Timeout | undefined;
+
+export async function activate(context: vscode.ExtensionContext) {
+	const subscriptions = context.subscriptions;
+	const commandId = 'vsc-adda.refresh';
+
+	const item = initStatusBar(getVisitorCount, commandId);
+	subscriptions.push(item);
+
+	subscriptions.push(
+		vscode.commands.registerCommand(commandId, async () => {
+			await refresh();
+		})
+	);
+
+	await refresh();
+	scheduleNext();
+
+	subscriptions.push({ dispose: () => timer && clearTimeout(timer) });
+}
+
+export function deactivate() {
+	if (timer) {
+		clearTimeout(timer);
+	}
+}
+
+function isOpen(d: Date = new Date()): boolean {
+	return d.getHours() >= OPEN && d.getHours() < CLOSE;
+}
+
+function timeUntilOpenMs(from: Date = new Date()): number {
+	const next = new Date(from);
+	if (from.getHours() < OPEN) {
+		next.setHours(OPEN, 0, 0, 0);
+	} else {
+		next.setDate(next.getDate() + 1);
+		next.setHours(OPEN, 0, 0, 0);
+	}
+	return next.getTime() - from.getTime();
+}
+
+function scheduleNext(): void {
+	if (timer) {
+		clearTimeout(timer);
+	}
+
+	if (isOpen()) {
+		timer = setTimeout(() => {
+			refresh().finally(scheduleNext);
+		}, INTERVAL_MS);
+	} else {
+		timer = setTimeout(() => {
+			refresh().finally(scheduleNext);
+		}, timeUntilOpenMs());
+	}
+}

src/http.ts

@@ -0,0 +1,37 @@
+import * as https from 'https';
+
+export function getVisitorCount(): Promise<number> {
+	return new Promise((resolve, reject) => {
+		const req = https.get('https://www.gymcontrol.se/global/checkedin/checkedin.php?uid=9094', (res) => {
+			if (!res.statusCode || res.statusCode < 200 || res.statusCode >= 300) {
+				res.resume();
+				reject(new Error(`HTTP ${res.statusCode ?? '?'}`));
+				return;
+			}
+
+			res.setEncoding('utf8');
+
+			let raw = '';
+			res.on('data', (chunk) => {
+				raw += chunk;
+			});
+
+			res.on('end', () => {
+				const text = raw.trim();
+				const n = Number.parseInt(text, 10);
+
+				if (Number.isFinite(n)) {
+					resolve(n);
+				} else {
+					reject(new Error(`Invalid response: "${text}"`));
+				}
+			});
+		});
+
+		req.on('error', reject);
+
+		req.setTimeout(5000, () => {
+			req.destroy(new Error('Timeout after 5000 ms'));
+		});
+	});
+}

src/statusBar.ts

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+import * as vscode from 'vscode';
+
+const TOOLTIP_TEXT = 'Current Gym Visitors';
+
+let item: vscode.StatusBarItem;
+let getCount: (() => Promise<number>) | undefined;
+
+export function initStatusBar(getVisitorCount: () => Promise<number>, commandId: string): vscode.StatusBarItem {
+	getCount = getVisitorCount;
+
+	item = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right, 1000);
+	item.command = commandId;
+	item.text = '$(adda-fitness) 0';
+	item.tooltip = TOOLTIP_TEXT;
+	item.show();
+
+	return item;
+}
+
+export async function refresh(): Promise<void> {
+	if (!item || !getCount) {
+		return;
+	}
+
+	item.text = '$(adda-fitness) $(sync~spin)';
+
+	try {
+		const [count] = await Promise.all([getCount(), sleep(1500)]);
+
+		item.text = `$(adda-fitness) ${count}`;
+		item.tooltip = TOOLTIP_TEXT;
+	} catch (e: any) {
+		item.text = '$(warning) Adda';
+		item.tooltip = e?.message ?? 'Unknown error';
+	} finally {
+		item.show();
+	}
+}
+
+function sleep(ms: number): Promise<void> {
+	return new Promise((resolve) => setTimeout(resolve, ms));
+}