1

Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>

src/shared/tmux/tmux-utils/server-health.ts

@@ -0,0 +1,47 @@
+let serverAvailable: boolean | null = null
+let serverCheckUrl: string | null = null
+
+function delay(milliseconds: number): Promise<void> {
+	return new Promise((resolve) => setTimeout(resolve, milliseconds))
+}
+
+export async function isServerRunning(serverUrl: string): Promise<boolean> {
+	if (serverCheckUrl === serverUrl && serverAvailable === true) {
+		return true
+	}
+
+	const healthUrl = new URL("/global/health", serverUrl).toString()
+	const timeoutMs = 3000
+	const maxAttempts = 2
+
+	for (let attempt = 1; attempt <= maxAttempts; attempt++) {
+		const controller = new AbortController()
+		const timeout = setTimeout(() => controller.abort(), timeoutMs)
+
+		try {
+			const response = await fetch(healthUrl, {
+				signal: controller.signal,
+			}).catch(() => null)
+			clearTimeout(timeout)
+
+			if (response?.ok) {
+				serverCheckUrl = serverUrl
+				serverAvailable = true
+				return true
+			}
+		} finally {
+			clearTimeout(timeout)
+		}
+
+		if (attempt < maxAttempts) {
+			await delay(250)
+		}
+	}
+
+	return false
+}
+
+export function resetServerCheck(): void {
+	serverAvailable = null
+	serverCheckUrl = null
+}