chore(refactor): move RequiresOnline into controllers

src/controllers/client/jsx/RequiresOnline.tsx

@@ -0,0 +1,47 @@
+import { WifiOff } from "@styled-icons/boxicons-regular";
+import styled from "styled-components/macro";
+
+import { Text } from "preact-i18n";
+
+import { Preloader } from "@revoltchat/ui";
+
+import { useSession } from "../ClientController";
+
+interface Props {
+    children: Children;
+}
+
+const Base = styled.div`
+    gap: 16px;
+    padding: 1em;
+    display: flex;
+    user-select: none;
+    align-items: center;
+    flex-direction: row;
+    justify-content: center;
+    color: var(--tertiary-foreground);
+    background: var(--secondary-header);
+
+    > div {
+        font-size: 18px;
+    }
+`;
+
+export default function RequiresOnline(props: Props) {
+    const session = useSession();
+
+    if (!session || session.state === "Connecting")
+        return <Preloader type="ring" />;
+
+    if (!(session.state === "Online" || session.state === "Ready"))
+        return (
+            <Base>
+                <WifiOff size={16} />
+                <div>
+                    <Text id="app.special.requires_online" />
+                </div>
+            </Base>
+        );
+
+    return <>{props.children}</>;
+}