Pagination into its own page + added to categories

src/__tests__/app.test.ts

@@ -139,6 +139,17 @@ describe('GET /v1/category/', () => {
         expect(res.status).toEqual(200)
         expect(res.body.categories[0].name).toEqual('VueJS Composition API')
     })
+
+    it('returns status code 200 and no categories', async () => {
+        const res = await request(app)
+            .get('/v1/category?skip=5&take=5')
+            .set('Content-Type', 'application/json')
+            .set('Cookie', jwtCookie as string)
+
+        expect(res.status).toEqual(200)
+        expect(res.body.links.next).toEqual('/v1/category?start=10&per_page=5')
+        expect(res.body.links.prev).toEqual('/v1/category?start=0&per_page=5')
+    })
 })
 
 describe('GET /v1/category/:id', () => {

src/routers/category.ts

@@ -1,6 +1,7 @@
 import { Category, Prisma, PrismaClient } from "@prisma/client"
 import express, { RequestHandler } from "express"
 import { z } from "zod"
+import { getPaginationLinks, Pagination, queryPaginationParser } from "../utils/pagination.js"
 import { userIdMiddleware } from "./user.js"
 
 const categoryRouter = express.Router()
@@ -18,20 +19,30 @@ const paramsIdParser = z.object({
     id: z.coerce.number(),
 }).required()
 
-// TODO Ajouter pagination et queries de recherche
+async function findCategories(userId: number, pagination: Pagination): Promise<Category[]> {
+    return await prisma.category.findMany({
+        where: { user_id: userId },
+        ...pagination
+    })
+}
+
 const categoryGet: RequestHandler = async (req, res) => {
     let categories: Category[] | null = null
+    const pagination = queryPaginationParser.parse(req.query)
 
     try {
-        categories = await prisma.category.findMany({
-            where: { user_id: req.body.userId }
-        })
+        categories = await findCategories(req.body.userId, pagination)
     } catch (error: any) {
         res.status(400).json({ message: (error.issues ?? error) })
         return;
     }
 
-    res.json({ categories })
+    res.json({
+        categories,
+        pagination,
+        links: getPaginationLinks(pagination, 'category'),
+        total: categories.length
+    })
 }
 
 const categoryGetUnique: RequestHandler = async (req, res) => {

src/routers/snippet.ts

@@ -1,13 +1,9 @@
 import { Prisma, PrismaClient, Snippet } from "@prisma/client"
 import express, { RequestHandler } from "express"
 import { z } from "zod"
+import { Pagination, getPaginationLinks, queryPaginationParser } from "../utils/pagination.js"
 import { userIdMiddleware } from "./user.js"
 
-interface Pagination {
-    skip: number,
-    take: number
-}
-
 const snippetRouter = express.Router()
 const prisma = new PrismaClient()
 
@@ -30,11 +26,6 @@ const paramsIdParser = z.object({
     id: z.coerce.number(),
 }).required()
 
-const queryPaginationParser = z.object({
-    skip: z.coerce.number().optional().default(0),
-    take: z.coerce.number().optional().default(10)
-})
-
 function shortenSnippetsTagDepth(snippets: Snippet[]) {
     snippets.forEach((snippet: any) => {
         snippet.tags = snippet.Snippet_tag.map((x: any) => ({ ...x.tag }))
@@ -42,13 +33,6 @@ function shortenSnippetsTagDepth(snippets: Snippet[]) {
     })
 }
 
-function getPaginationLinks(query: Pagination): object {
-    return {
-        next: `/v1/snippet?start=${query.skip + query.take}&per_page=${query.take}`,
-        prev: `/v1/snippet?start=${Math.max(0, query.skip - query.take)}&per_page=${query.take}`
-    }
-}
-
 async function findSnippets(userId: number, pagination: Pagination): Promise<Snippet[]> {
     return await prisma.snippet.findMany({
         where: { user_id: userId },
@@ -76,7 +60,7 @@ const snippetGet: RequestHandler = async (req, res) => {
     res.json({
         snippets,
         pagination,
-        links: getPaginationLinks(pagination),
+        links: getPaginationLinks(pagination, 'snippet'),
         total: snippets.length
     })
 }

src/utils/pagination.ts

@@ -0,0 +1,18 @@
+import { z } from "zod"
+
+export interface Pagination {
+    skip: number,
+    take: number
+}
+
+export const queryPaginationParser = z.object({
+    skip: z.coerce.number().optional().default(0),
+    take: z.coerce.number().optional().default(10)
+})
+
+export function getPaginationLinks(query: Pagination, routeName: string): object {
+    return {
+        next: `/v1/${routeName}?start=${query.skip + query.take}&per_page=${query.take}`,
+        prev: `/v1/${routeName}?start=${Math.max(0, query.skip - query.take)}&per_page=${query.take}`
+    }
+}