feat(hooks): add useCrestronSubscribeDigital

src/hooks/index.ts

@@ -0,0 +1 @@
+export * from "./useCrestronSubscribeDigital";

src/hooks/useCrestronSubscribeDigital/index.ts

@@ -0,0 +1,35 @@
+import { useState, useRef, useEffect } from "react";
+import { subscribeState, unsubscribeState } from "@crestron/ch5-crcomlib";
+import CrestronCH5 from "@norgate-av/crestron-ch5-helper";
+
+export function useCrestronSubscribeDigital(
+    signalName: string,
+    callback?: (value: boolean) => void,
+): [boolean] {
+    const [state, setState] = useState<boolean>(false);
+    const callbackRef = useRef<(value: boolean) => void | undefined>();
+
+    useEffect(() => {
+        callbackRef.current = callback;
+    }, [callback]);
+
+    useEffect(() => {
+        const signalType = CrestronCH5.SignalType.Boolean;
+        const id = subscribeState(signalType, signalName, (value: boolean) => {
+            setState(value);
+
+            if (callbackRef.current) {
+                callbackRef.current(value);
+            }
+        });
+
+        return () => {
+            unsubscribeState(signalType, signalName, id);
+        };
+    }, [signalName]);
+
+    return [state];
+}
+
+export default useCrestronSubscribeDigital;
+export const useCrestronSubscribeBoolean = useCrestronSubscribeDigital;

src/index.ts

@@ -1 +1 @@
-export {};
+export * from "./hooks";