fix: handle a case when headscale is unreachable

app/utils/headscale.ts

@@ -8,36 +8,51 @@ export class HeadscaleError extends Error {
 	}
 }
 
+export class FatalError extends Error {
+	constructor(message: string) {
+		super(message)
+		this.name = 'FatalError'
+	}
+}
+
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
 export async function pull<T>(url: string, key: string) {
-	const prefix = process.env.HEADSCALE_URL!
-	const response = await fetch(`${prefix}/api/${url}`, {
-		headers: {
-			Authorization: `Bearer ${key}`
+	try {
+		const prefix = process.env.HEADSCALE_URL!
+		const response = await fetch(`${prefix}/api/${url}`, {
+			headers: {
+				Authorization: `Bearer ${key}`
+			}
+		})
+
+		if (!response.ok) {
+			throw new HeadscaleError(await response.text(), response.status)
 		}
-	})
 
-	if (!response.ok) {
-		throw new HeadscaleError(await response.text(), response.status)
+		return await (response.json() as Promise<T>)
+	} catch {
+		throw new FatalError('The Headscale server is not reachable')
 	}
-
-	return response.json() as Promise<T>
 }
 
 export async function post<T>(url: string, key: string, body?: unknown) {
-	const prefix = process.env.HEADSCALE_URL!
-	const response = await fetch(`${prefix}/api/${url}`, {
-		method: 'POST',
-		body: body ? JSON.stringify(body) : undefined,
-		headers: {
-			Authorization: `Bearer ${key}`
+	try {
+		const prefix = process.env.HEADSCALE_URL!
+		const response = await fetch(`${prefix}/api/${url}`, {
+			method: 'POST',
+			body: body ? JSON.stringify(body) : undefined,
+			headers: {
+				Authorization: `Bearer ${key}`
+			}
+		})
+
+		if (!response.ok) {
+			throw new HeadscaleError(await response.text(), response.status)
 		}
-	})
 
-	if (!response.ok) {
-		throw new HeadscaleError(await response.text(), response.status)
+		return await (response.json() as Promise<T>)
+	} catch {
+		throw new FatalError('The Headscale server is not reachable')
 	}
-
-	return response.json() as Promise<T>
 }