feat(dashboard): impl server monitoring

apps/backend/src/beszel/middleware.ts

@@ -0,0 +1,61 @@
+import type { MiddlewareHandler } from "hono"
+
+interface BeszelAuthResponse {
+	token: string
+}
+
+export function beszelAuth(): MiddlewareHandler {
+	let cachedToken: string | null = null
+
+	const authenticate = async (): Promise<string> => {
+		if (cachedToken) {
+			return cachedToken
+		}
+
+		const beszelHost = process.env.BESZEL_HOST
+		const beszelEmail = process.env.BESZEL_EMAIL
+		const beszelPassword = process.env.BESZEL_PASSWORD
+
+		if (!beszelHost || !beszelEmail || !beszelPassword) {
+			throw new Error(
+				"Beszel configuration missing. Set BESZEL_HOST, BESZEL_EMAIL, and BESZEL_PASSWORD environment variables.",
+			)
+		}
+
+		const response = await fetch(`http://${beszelHost}/api/collections/users/auth-with-password`, {
+			method: "POST",
+			headers: {
+				"Content-Type": "application/json",
+			},
+			body: JSON.stringify({
+				identity: beszelEmail,
+				password: beszelPassword,
+			}),
+		})
+
+		if (!response.ok) {
+			throw new Error(`Beszel authentication failed: ${response.status}`)
+		}
+
+		const data = (await response.json()) as BeszelAuthResponse
+		cachedToken = data.token
+
+		return cachedToken
+	}
+
+	return async (c, next) => {
+		try {
+			const token = await authenticate()
+			c.set("beszelToken", token)
+			await next()
+		} catch (error) {
+			return c.json({ error: "Authentication failed", message: String(error) }, 500)
+		}
+	}
+}
+
+export type BeszelContext = {
+	Variables: {
+		beszelToken: string
+	}
+}