From d42de0545cbf50679d03d761933273ec1cd6e597 Mon Sep 17 00:00:00 2001
From: Vladimir Potekhin <vladimir.potekh@gmail.com>
Date: Thu, 12 Dec 2024 19:16:40 +0300
Subject: [PATCH] fix(addon-table): fix calculating start page

---
 .../table-pagination/table-pagination.component.ts           | 2 +-
 .../demo/src/modules/components/table-pagination/index.html  | 1 +
 .../demo/src/modules/components/table-pagination/index.ts    | 5 +++++
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/projects/addon-table/components/table-pagination/table-pagination.component.ts b/projects/addon-table/components/table-pagination/table-pagination.component.ts
index c407eb2fbfdc..bf7239d0314b 100644
--- a/projects/addon-table/components/table-pagination/table-pagination.component.ts
+++ b/projects/addon-table/components/table-pagination/table-pagination.component.ts
@@ -90,7 +90,7 @@ export class TuiTablePagination {
     }
 
     protected get start(): number {
-        return this.page * this.size;
+        return Math.min(this.page * this.size, Math.max(this.total - this.size, 0));
     }
 
     protected get end(): number {
diff --git a/projects/demo/src/modules/components/table-pagination/index.html b/projects/demo/src/modules/components/table-pagination/index.html
index 746614bc7c0d..576d6d9ec005 100644
--- a/projects/demo/src/modules/components/table-pagination/index.html
+++ b/projects/demo/src/modules/components/table-pagination/index.html
@@ -59,6 +59,7 @@
                 documentationPropertyName="total"
                 documentationPropertyType="number"
                 [(documentationPropertyValue)]="total"
+                (documentationPropertyValueChange)="totalChange($event)"
             >
                 Total amount of items/lines in the table.
             </ng-template>
diff --git a/projects/demo/src/modules/components/table-pagination/index.ts b/projects/demo/src/modules/components/table-pagination/index.ts
index 358bcae20497..c614458f0181 100644
--- a/projects/demo/src/modules/components/table-pagination/index.ts
+++ b/projects/demo/src/modules/components/table-pagination/index.ts
@@ -27,4 +27,9 @@ export default class Page {
         this.page = page;
         this.size = size;
     }
+
+    protected totalChange(total: number): void {
+        this.total = total;
+        this.size = Math.min(this.size, Math.max(total, 1));
+    }
 }