feat: Paginate Posts

arbezerra · Jun 29, 2023 · e9a1a91 · e9a1a91
1 parent 9f6b4ce
commit e9a1a91
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Showing 4 changed files with 32 additions and 8 deletions.
diff --git a/controllers/post.ts b/controllers/post.ts
@@ -7,8 +7,23 @@ import { v4 as uuid4 } from "uuid";
 
 const PostController = {
   index: async (req: Request, res: Response) => {
-    const items = await pool<Post>("posts");
-    return res.status(200).json(items);
+    const page = parseInt(req.query.page as string) || 0;
+    const size = parseInt(req.query.size as string) || 5;
+    const items = pool<Post>("posts")
+      .offset(page * size)
+      .limit(size)
+      .orderBy("date", "desc");
+    const total = pool<{ total: number }>("posts")
+      .count("id", { as: "total" })
+      .first();
+    return res.status(200).json({
+      items: await items,
+      paginate: {
+        page,
+        size,
+        total: (await total)?.total,
+      },
+    });
   },
   show: async (req: Request, res: Response) => {
     const item = await pool<Post>("posts").where("id", req.params.id).first();
@@ -76,6 +91,13 @@ const PostController = {
             slug: z.string().regex(/^[A-Za-z0-9]+(?:-[A-Za-z0-9]+)*$/),
           }),
         });
+      case ValidateMethod.PAGINATE:
+        return z.object({
+          query: z.object({
+            page: z.string().optional().transform((x) => parseInt(x || "0")).pipe(z.number().nonnegative()),
+            size: z.string().optional().transform((x) => parseInt(x || "5")).pipe(z.number().positive()),
+          }),
+        });
       default:
         return z.object({});
     }

diff --git a/middlewares/validate.ts b/middlewares/validate.ts
@@ -7,6 +7,7 @@ export enum ValidateMethod {
   ID,
   SLUG,
   LOGIN,
+  PAGINATE,
 }
 
 const validate = (schema: AnyZodObject) => {

diff --git a/routes/post.ts b/routes/post.ts
@@ -7,6 +7,7 @@ const router = Router();
 
 router.get(
   "/",
+  validate(PostController.validate(ValidateMethod.PAGINATE)),
   PostController.index
 );
 router.get(

diff --git a/tests/post.test.ts b/tests/post.test.ts
@@ -25,14 +25,14 @@ describe("Post", () => {
   });
 
   test("GET /post/:id 200", async () => {
-    const result = await request(app).get("/post");
-    return request(app).get(`/post/${result.body[0].id}`).expect(200);
+    const post = await pool<Post>("posts").first();
+    return request(app).get(`/post/${post!.id}`).expect(200);
   });
 
   test("GET /post/slug/:slug 200", async () => {
-    const result = await request(app).get("/post");
+    const post = await pool<Post>("posts").first();
     return request(app)
-      .get(`/post/slug/${result.body[0].slug}`)
+      .get(`/post/slug/${post!.slug}`)
       .expect(200);
   });
 
@@ -72,9 +72,9 @@ describe("Post", () => {
   });
 
   test("DELETE /post 200", async () => {
-    const result = await request(app).get("/post");
+    const post = await pool<Post>("posts").first();
     return request(app)
-      .delete(`/post/${result.body[0].id}`)
+      .delete(`/post/${post!.id}`)
       .set({ Authorization: `Bearer ${token}` })
       .expect(200);
   });