From c8c2f22cc58c7ccbde99f83e95de48c48d41a867 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?bartosjiri=20=E2=9A=A1?= <me@bartosjiri.com>
Date: Thu, 10 Feb 2022 19:21:59 +0100
Subject: [PATCH] fix: return only current link for zero results (#157)

---
 src/paginate.spec.ts | 23 ++++++++++++++++++++++-
 src/paginate.ts      |  2 +-
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/paginate.spec.ts b/src/paginate.spec.ts
index 409ae47..e3320fe 100644
--- a/src/paginate.spec.ts
+++ b/src/paginate.spec.ts
@@ -140,7 +140,7 @@ describe('paginate', () => {
         expect(result.data).toStrictEqual(cats.slice(0, 2))
     })
 
-    it('should return correct links', async () => {
+    it('should return correct links for some results', async () => {
         const config: PaginateConfig<CatEntity> = {
             sortableColumns: ['id'],
         }
@@ -159,6 +159,27 @@ describe('paginate', () => {
         expect(links.last).toBe('?page=3&limit=2&sortBy=id:ASC')
     })
 
+    it('should return only current link if zero results', async () => {
+        const config: PaginateConfig<CatEntity> = {
+            sortableColumns: ['id'],
+            searchableColumns: ['name'],
+        }
+        const query: PaginateQuery = {
+            path: '',
+            page: 1,
+            limit: 2,
+            search: 'Pluto',
+        }
+
+        const { links } = await paginate<CatEntity>(query, repo, config)
+
+        expect(links.first).toBe(undefined)
+        expect(links.previous).toBe(undefined)
+        expect(links.current).toBe('?page=1&limit=2&sortBy=id:ASC&search=Pluto')
+        expect(links.next).toBe(undefined)
+        expect(links.last).toBe(undefined)
+    })
+
     it('should default to defaultSortBy if query sortBy does not exist', async () => {
         const config: PaginateConfig<CatEntity> = {
             sortableColumns: ['id', 'createdAt'],
diff --git a/src/paginate.ts b/src/paginate.ts
index ff12926..e7375dd 100644
--- a/src/paginate.ts
+++ b/src/paginate.ts
@@ -278,7 +278,7 @@ export async function paginate<T>(
             previous: page - 1 < 1 ? undefined : buildLink(page - 1),
             current: buildLink(page),
             next: page + 1 > totalPages ? undefined : buildLink(page + 1),
-            last: page == totalPages ? undefined : buildLink(totalPages),
+            last: page == totalPages || !totalItems ? undefined : buildLink(totalPages),
         },
     }