feat: add beer style likes

src/hooks/data-fetching/beer-style-likes/useCheckIfUserLikesBeerPost.ts

@@ -0,0 +1,57 @@
+import UserContext from '@/contexts/UserContext';
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+import { useContext } from 'react';
+import useSWR from 'swr';
+import { z } from 'zod';
+
+/**
+ * A custom React hook that checks if the current user has liked a beer style by fetching
+ * data from the server.
+ *
+ * @param beerStyleId The ID of the beer style to check for likes.
+ * @returns An object with the following properties:
+ *
+ *   - `error`: The error that occurred while fetching the data.
+ *   - `isLoading`: A boolean indicating whether the data is being fetched.
+ *   - `mutate`: A function to mutate the data.
+ *   - `isLiked`: A boolean indicating whether the current user has liked the beer style.
+ */
+const useCheckIfUserLikesBeerStyle = (beerStyleId: string) => {
+  const { user } = useContext(UserContext);
+  const { data, error, isLoading, mutate } = useSWR(
+    `/api/beers/styles/${beerStyleId}/like/is-liked`,
+    async (url) => {
+      if (!user) {
+        throw new Error('User is not logged in.');
+      }
+
+      const response = await fetch(url);
+      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 useCheckIfUserLikesBeerStyle;