solution

README.md

@@ -2,7 +2,7 @@
 
 > Here is the [working version](https://mate-academy.github.io/react_pagination/)
 
-You a given a list of items and markup for the `Pagination`. Implement the 
+You a given a list of items and markup for the `Pagination`. Implement the
 `Pagination` as a stateless component to show only the items for a current page.
 
 1. The `Pagination` should be used with the next props:
@@ -32,4 +32,4 @@ You a given a list of items and markup for the `Pagination`. Implement the
 - Implement a solution following the [React task guideline](https://github.com/mate-academy/react_task-guideline#react-tasks-guideline).
 - Use the [React TypeScript cheat sheet](https://mate-academy.github.io/fe-program/js/extra/react-typescript).
 - Open one more terminal and run tests with `npm test` to ensure your solution is correct.
-- Replace `<your_account>` with your Github username in the [DEMO LINK](https://<your_account>.github.io/react_pagination/) and add it to the PR description.
+- Replace `<your_account>` with your Github username in the [DEMO LINK](https://jk-npc.github.io/react_pagination/) and add it to the PR description.

src/App.tsx

@@ -1,25 +1,43 @@
-import React from 'react';
+import React, { useState } from 'react';
 import './App.css';
 import { getNumbers } from './utils';
+import { Pagination } from './components/Pagination';
 
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const items = getNumbers(1, 42).map(n => `Item ${n}`);
 
 export const App: React.FC = () => {
+  const [currentPage, setCurrentPage] = useState(1);
+  const [perPage, setPerPage] = useState(5);
+
+  const total = items.length;
+
+  const startItem = (currentPage - 1) * perPage + 1;
+  const endItem = Math.min(currentPage * perPage, total);
+
+  const visibleItems = items.slice(startItem - 1, endItem);
+
+  const handlePerPageChange = (event: React.ChangeEvent<HTMLSelectElement>) => {
+    setPerPage(+event.target.value);
+    setCurrentPage(1);
+  };
+
   return (
     <div className="container">
       <h1>Items with Pagination</h1>
 
       <p className="lead" data-cy="info">
-        Page 1 (items 1 - 5 of 42)
+        {`Page ${currentPage} (items ${startItem} - ${endItem} of ${total})`}
       </p>
 
       <div className="form-group row">
         <div className="col-3 col-sm-2 col-xl-1">
           <select
             data-cy="perPageSelector"
             id="perPageSelector"
-            className="form-control">
+            className="form-control"
+            value={perPage}
+            onChange={handlePerPageChange}
+          >
             <option value="3">3</option>
             <option value="5">5</option>
             <option value="10">10</option>
@@ -33,80 +51,20 @@ export const App: React.FC = () => {
       </div>
 
       {/* Move this markup to Pagination */}
-      <ul className="pagination">
-        <li className="page-item disabled">
-          <a
-            data-cy="prevLink"
-            className="page-link"
-            href="#prev"
-            aria-disabled="true">
-            «
-          </a>
-        </li>
-        <li className="page-item active">
-          <a data-cy="pageLink" className="page-link" href="#1">
-            1
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#2">
-            2
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#3">
-            3
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#4">
-            4
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#5">
-            5
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#6">
-            6
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#7">
-            7
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#8">
-            8
-          </a>
-        </li>
-        <li className="page-item">
-          <a data-cy="pageLink" className="page-link" href="#9">
-            9
-          </a>
-        </li>
-        <li className="page-item">
-          <a
-            data-cy="nextLink"
-            className="page-link"
-            href="#next"
-            aria-disabled="false">
-            »
-          </a>
-        </li>
-      </ul>
+      <Pagination
+        total={total}
+        perPage={perPage}
+        currentPage={currentPage}
+        onPageChange={setCurrentPage}
+      />
+
       <ul>
-        <li data-cy="item">Item 1</li>
-        <li data-cy="item">Item 2</li>
-        <li data-cy="item">Item 3</li>
-        <li data-cy="item">Item 4</li>
-        <li data-cy="item">Item 5</li>
+        {visibleItems.map(item => (
+          <li key={item} data-cy="item">
+            {item}
+          </li>
+        ))}
       </ul>
     </div>
   );
 };
-
-export default App;

src/components/Pagination/Pagination.tsx

@@ -1 +1,77 @@
-export const Pagination = () => {};
+import React from 'react';
+
+type Props = {
+  total: number;
+  perPage: number;
+  currentPage?: number;
+  onPageChange: (page: number) => void;
+};
+
+export const Pagination: React.FC<Props> = ({
+  total,
+  perPage,
+  currentPage = 1,
+  onPageChange,
+}) => {
+  const totalPages = Math.ceil(total / perPage);
+
+  const handlePageChange = (page: number, event: React.MouseEvent) => {
+    event.preventDefault();
+
+    if (page >= 1 && page <= totalPages && page !== currentPage) {
+      onPageChange(page);
+    }
+  };
+
+  const pages = [];
+
+  for (let i = 1; i <= totalPages; i++) {
+    pages.push(i);
+  }
+
+  return (
+    <ul className="pagination">
+      <li className={`page-item ${currentPage === 1 ? 'disabled' : ''}`}>
+        <a
+          data-cy="prevLink"
+          className="page-link"
+          href="#prev"
+          aria-disabled={currentPage === 1}
+          onClick={e => handlePageChange(currentPage - 1, e)}
+        >
+          «
+        </a>
+      </li>
+
+      {pages.map(page => (
+        <li
+          key={page}
+          className={`page-item ${page === currentPage ? 'active' : ''}`}
+        >
+          <a
+            data-cy="pageLink"
+            className="page-link"
+            href={`#${page}`}
+            onClick={e => handlePageChange(page, e)}
+          >
+            {page}
+          </a>
+        </li>
+      ))}
+
+      <li
+        className={`page-item ${currentPage === totalPages ? 'disabled' : ''}`}
+      >
+        <a
+          data-cy="nextLink"
+          className="page-link"
+          href="#next"
+          aria-disabled={currentPage === totalPages}
+          onClick={e => handlePageChange(currentPage + 1, e)}
+        >
+          »
+        </a>
+      </li>
+    </ul>
+  );
+};