Refactor: change directory structure of hooks to organize by task

src/hooks/data-fetching/beer-likes/useBeerPostLikeCount.ts

@@ -0,0 +1,48 @@
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+import { z } from 'zod';
+import useSWR from 'swr';
+
+/**
+ * Custom hook to fetch the like count for a beer post from the server.
+ *
+ * @param beerPostId - The ID of the beer post to fetch the like count for.
+ * @returns An object with the current like count, as well as metadata about the current
+ *   state of the request.
+ */
+
+const useGetBeerPostLikeCount = (beerPostId: string) => {
+  const { error, mutate, data, isLoading } = useSWR(
+    `/api/beers/${beerPostId}/like`,
+    async (url) => {
+      const response = await fetch(url);
+      const json = await response.json();
+
+      const parsed = APIResponseValidationSchema.safeParse(json);
+
+      if (!parsed.success) {
+        throw new Error('Failed to parse API response');
+      }
+
+      const parsedPayload = z
+        .object({
+          likeCount: z.number(),
+        })
+        .safeParse(parsed.data.payload);
+
+      if (!parsedPayload.success) {
+        throw new Error('Failed to parse API response payload');
+      }
+
+      return parsedPayload.data.likeCount;
+    },
+  );
+
+  return {
+    error: error as unknown,
+    isLoading,
+    mutate,
+    likeCount: data as number | undefined,
+  };
+};
+
+export default useGetBeerPostLikeCount;

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

@@ -0,0 +1,56 @@
+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 post by fetching
+ * data from the server.
+ *
+ * @param beerPostId The ID of the beer post to check for likes.
+ * @returns An object containing a boolean indicating if the user has liked the beer post,
+ *   an error object if an error occurred during the request, and a boolean indicating if
+ *   the request is currently loading.
+ * @throws When the user is not logged in, the server returns an error status code, or if
+ *   the response data fails to validate against the expected schema.
+ */
+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;