Update beer like button to use custom hook to load like status

hooks/useCheckIfUserLikesBeerPost.ts

@@ -0,0 +1,45 @@
+import UserContext from '@/contexts/userContext';
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+import { useContext } from 'react';
+import useSWR from 'swr';
+import { z } from 'zod';
+
+const useCheckIfUserLikesBeerPost = (beerPostId: string) => {
+  const { user } = useContext(UserContext);
+  const { data, error, isLoading, mutate } = useSWR(
+    `/api/beers/${beerPostId}/like/is-liked`,
+    async () => {
+      if (!user) {
+        throw new Error('User is not logged in.');
+      }
+
+      const response = await fetch(`/api/beers/${beerPostId}/like/is-liked`);
+      const json = await response.json();
+      const parsed = APIResponseValidationSchema.safeParse(json);
+
+      if (!parsed.success) {
+        throw new Error('Invalid API response.');
+      }
+
+      const { payload } = parsed.data;
+      const parsedPayload = z.object({ isLiked: z.boolean() }).safeParse(payload);
+
+      if (!parsedPayload.success) {
+        throw new Error('Invalid API response.');
+      }
+
+      const { isLiked } = parsedPayload.data;
+
+      return isLiked;
+    },
+  );
+
+  return {
+    isLiked: data,
+    error: error as unknown,
+    isLoading,
+    mutate,
+  };
+};
+
+export default useCheckIfUserLikesBeerPost;