Refactor: further extract controller logic from routers

src/controllers/posts/beerPosts/index.ts

@@ -0,0 +1,143 @@
+import ServerError from '@/config/util/ServerError';
+import deleteBeerPostById from '@/services/BeerPost/deleteBeerPostById';
+import editBeerPostById from '@/services/BeerPost/editBeerPostById';
+import getBeerPostById from '@/services/BeerPost/getBeerPostById';
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+import { NextApiResponse } from 'next';
+import { NextHandler } from 'next-connect';
+import { z } from 'zod';
+import getBeerRecommendations from '@/services/BeerPost/getBeerRecommendations';
+import getAllBeerPosts from '@/services/BeerPost/getAllBeerPosts';
+import DBClient from '@/prisma/DBClient';
+import createNewBeerPost from '@/services/BeerPost/createNewBeerPost';
+import {
+  BeerPostRequest,
+  CreateBeerPostRequest,
+  EditBeerPostRequest,
+  GetAllBeerPostsRequest,
+  GetBeerRecommendationsRequest,
+} from './types';
+
+export const checkIfBeerPostOwner = async <BeerPostRequestType extends BeerPostRequest>(
+  req: BeerPostRequestType,
+  res: NextApiResponse,
+  next: NextHandler,
+) => {
+  const { user, query } = req;
+  const { id } = query;
+
+  const beerPost = await getBeerPostById(id);
+
+  if (!beerPost) {
+    throw new ServerError('Beer post not found', 404);
+  }
+
+  if (beerPost.postedBy.id !== user!.id) {
+    throw new ServerError('You cannot edit that beer post.', 403);
+  }
+
+  return next();
+};
+
+export const editBeerPost = async (
+  req: EditBeerPostRequest,
+  res: NextApiResponse<z.infer<typeof APIResponseValidationSchema>>,
+) => {
+  await editBeerPostById({ id: req.query.id, data: req.body });
+
+  res.status(200).json({
+    message: 'Beer post updated successfully',
+    success: true,
+    statusCode: 200,
+  });
+};
+
+export const deleteBeerPost = async (req: BeerPostRequest, res: NextApiResponse) => {
+  const { id } = req.query;
+
+  const deleted = await deleteBeerPostById({ beerPostId: id });
+  if (!deleted) {
+    throw new ServerError('Beer post not found', 404);
+  }
+
+  res.status(200).json({
+    message: 'Beer post deleted successfully',
+    success: true,
+    statusCode: 200,
+  });
+};
+
+export const getBeerPostRecommendations = async (
+  req: GetBeerRecommendationsRequest,
+  res: NextApiResponse<z.infer<typeof APIResponseValidationSchema>>,
+) => {
+  const { id } = req.query;
+
+  const beerPost = await getBeerPostById(id);
+
+  if (!beerPost) {
+    throw new ServerError('Beer post not found', 404);
+  }
+
+  const pageNum = parseInt(req.query.page_num as string, 10);
+  const pageSize = parseInt(req.query.page_size as string, 10);
+
+  const { count, beerRecommendations } = await getBeerRecommendations({
+    beerPost,
+    pageNum,
+    pageSize,
+  });
+
+  res.setHeader('X-Total-Count', count);
+  res.status(200).json({
+    success: true,
+    message: 'Recommendations fetched successfully',
+    statusCode: 200,
+    payload: beerRecommendations,
+  });
+};
+
+export const getBeerPosts = async (
+  req: GetAllBeerPostsRequest,
+  res: NextApiResponse<z.infer<typeof APIResponseValidationSchema>>,
+) => {
+  const pageNum = parseInt(req.query.page_num, 10);
+  const pageSize = parseInt(req.query.page_size, 10);
+
+  const beerPosts = await getAllBeerPosts({ pageNum, pageSize });
+
+  const beerPostCount = await DBClient.instance.beerPost.count();
+
+  res.setHeader('X-Total-Count', beerPostCount);
+
+  res.status(200).json({
+    message: 'Beer posts retrieved successfully',
+    statusCode: 200,
+    payload: beerPosts,
+    success: true,
+  });
+};
+
+export const createBeerPost = async (
+  req: CreateBeerPostRequest,
+  res: NextApiResponse<z.infer<typeof APIResponseValidationSchema>>,
+) => {
+  const { name, description, styleId: typeId, abv, ibu, breweryId } = req.body;
+
+  const newBeerPost = await createNewBeerPost({
+    name,
+    description,
+    abv,
+    ibu,
+    styleId: typeId,
+    breweryId,
+    userId: req.user!.id,
+  });
+
+  res.status(201).json({
+    message: 'Beer post created successfully',
+    statusCode: 201,
+    payload: newBeerPost,
+    success: true,
+  });
+};