[Feature]: Display a "Not Optimized for Mobile" overlay to users trying to access Agenta app from browsers with narrow width

agenta-web/src/components/NoMobilePageWrapper/NoMobilePageWrapper.tsx

@@ -0,0 +1,72 @@
+import {type PropsWithChildren, useState, useCallback} from "react"
+import {Typography, Button, theme} from "antd"
+import clsx from "clsx"
+import useResizeObserver from "@/hooks/useResizeObserver"
+import {createUseStyles} from "react-jss"
+import {JSSTheme} from "@/lib/Types"
+import {Transition} from "@headlessui/react"
+import {useRouter} from "next/router"
+import {MOBILE_UNOPTIMIZED_APP_ROUTES} from "./assets/constants"
+
+const useStyles = createUseStyles((theme: JSSTheme) => ({
+    overlay: {
+        background: `${theme.colorBgContainer}`,
+    },
+}))
+
+const {useToken} = theme
+
+const NoMobilePageWrapper: React.FC<PropsWithChildren> = ({children}) => {
+    const [dismissed, setDismissed] = useState(false)
+    const [shouldDisplay, setShouldDisplay] = useState(false)
+    const {overlay} = useStyles()
+    const {pathname} = useRouter()
+    const {token} = useToken()
+
+    const observerCallback = useCallback(
+        (bounds: DOMRectReadOnly) => {
+            setShouldDisplay(() => {
+                if (dismissed) return false // keep hidden if already dismissed by the user
+                if (!MOBILE_UNOPTIMIZED_APP_ROUTES.some((route) => pathname.startsWith(route)))
+                    return false
+
+                return bounds.width < token.screenMD
+            })
+        },
+        [dismissed, pathname, token.screenMD],
+    )
+
+    useResizeObserver(observerCallback, typeof window !== "undefined" ? document.body : undefined)
+
+    const handleDismiss = () => {
+        setDismissed(true)
+    }
+
+    return (
+        <Transition
+            show={!dismissed && shouldDisplay}
+            enter="transition-opacity duration-75"
+            enterFrom="opacity-0"
+            enterTo="opacity-100"
+            leave="transition-opacity duration-150"
+            leaveFrom="opacity-100"
+            leaveTo="opacity-0"
+            className={clsx([
+                "fixed top-0 left-0 right-0 bottom-0", // overlay the entire screen
+                "flex flex-col items-center justify-center gap-4", // flex config
+                "z-[9999]",
+                overlay, // TODO: better theme connected tailwind color classes
+            ])}
+            unmount
+        >
+            <Typography.Text className="w-8/12 text-center leading-1 text-lg">
+                Agenta works better in larger laptop or desktop screens.
+            </Typography.Text>
+            <Button type="primary" size="large" onClick={handleDismiss}>
+                View anyway
+            </Button>
+        </Transition>
+    )
+}
+
+export default NoMobilePageWrapper

agenta-web/src/components/NoMobilePageWrapper/assets/constants.ts

@@ -0,0 +1,9 @@
+// List of routes where the component should be displayed
+export const MOBILE_UNOPTIMIZED_APP_ROUTES = [
+    "/apps",
+    "/observability",
+    "/settings",
+    "/testsets",
+    "/evaluations",
+    "/workspaces",
+]

agenta-web/src/hooks/useResizeObserver.ts

@@ -1,26 +1,27 @@
 import {useLayoutEffect, useRef} from "react"
 
-function useResizeObserver<T extends HTMLDivElement>(
-    callback: (entry: ResizeObserverEntry["contentRect"]) => void,
-) {
+const useResizeObserver = <T extends HTMLDivElement>(
+    callback?: (entry: ResizeObserverEntry["contentRect"]) => void,
+    element?: HTMLElement,
+) => {
     const ref = useRef<T>(null)
 
     useLayoutEffect(() => {
-        const element = ref?.current
+        const _element = ref?.current || element
 
-        if (!element) {
+        if (!_element) {
             return
         }
 
         const observer = new ResizeObserver((entries) => {
-            callback(entries[0].contentRect)
+            callback?.(entries[0].contentRect)
         })
 
-        observer.observe(element)
+        observer.observe(_element)
         return () => {
             observer.disconnect()
         }
-    }, [callback, ref])
+    }, [callback, element, ref])
 
     return ref
 }

agenta-web/src/pages/_app.tsx

@@ -2,6 +2,7 @@ import {useEffect} from "react"
 import type {AppProps} from "next/app"
 import {useRouter} from "next/router"
 import Head from "next/head"
+import dynamic from "next/dynamic"
 
 import posthog from "posthog-js"
 import {PostHogProvider} from "posthog-js/react"
@@ -16,6 +17,13 @@ import "ag-grid-community/styles/ag-grid.css"
 import "ag-grid-community/styles/ag-theme-alpine.css"
 import {Inter} from "next/font/google"
 
+const NoMobilePageWrapper = dynamic(
+    () => import("@/components/NoMobilePageWrapper/NoMobilePageWrapper"),
+    {
+        ssr: false,
+    },
+)
+
 const inter = Inter({
     subsets: ["latin"],
     variable: "--font-inter",
@@ -60,6 +68,7 @@ export default function App({Component, pageProps}: AppProps) {
                                 <AppContextProvider>
                                     <Layout>
                                         <Component {...pageProps} />
+                                        <NoMobilePageWrapper />
                                     </Layout>
                                 </AppContextProvider>
                             </ProjectContextProvider>