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://Nika-Andriy.github.io/react_pagination/) and add it to the PR description.

src/App.tsx

@@ -1,25 +1,67 @@
 import React from 'react';
 import './App.css';
 import { getNumbers } from './utils';
+import { Pagination } from './components/Pagination';
+import { useSearchParams } from 'react-router-dom';
 
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const items = getNumbers(1, 42).map(n => `Item ${n}`);
+const total = items.length;
 
 export const App: React.FC = () => {
+  const [searchParams, setSearchParams] = useSearchParams();
+
+  const currentPage = Number(searchParams.get('page')) || 1;
+  const perPage = Number(searchParams.get('perPage')) || 5;
+
+  const startIndex = (currentPage - 1) * perPage;
+  const visibleItems = items.slice(startIndex, startIndex + perPage);
+
+  const updateParams = (params: {
+    page?: string | number;
+    perPage?: string | number;
+  }) => {
+    const newParams = new URLSearchParams(searchParams);
+
+    Object.entries(params).forEach(([key, value]) => {
+      if (value === null) {
+        newParams.delete(key);
+      } else {
+        newParams.set(key, value.toString());
+      }
+    });
+
+    setSearchParams(newParams);
+  };
+
+  const handlePerPageChange = (event: React.ChangeEvent<HTMLSelectElement>) => {
+    // При зміні perPage завжди скидаємо на 1 сторінку за умовою
+    updateParams({
+      perPage: event.target.value,
+      page: 1,
+    });
+  };
+
+  const handlePageChange = (page: number) => {
+    updateParams({ page });
+  };
+
   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 ${startIndex + 1} - ${Math.min(currentPage * perPage, total)} 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>
@@ -32,78 +74,19 @@ export const App: React.FC = () => {
         </label>
       </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={handlePageChange}
+      />
+
       <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>
   );

src/components/Pagination/Pagination.tsx

@@ -1 +1,74 @@
-export const Pagination = () => {};
+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);
+
+  // Використовуй цю функцію всюди, де є зміна сторінки
+  const handlePageClick = (e: React.MouseEvent, newPage: number) => {
+    e.preventDefault();
+    if (newPage !== currentPage && newPage >= 1 && newPage <= totalPages) {
+      onPageChange(newPage);
+    }
+  };
+
+  const pages = Array.from({ length: totalPages }, (_, i) => i + 1);
+
+  return (
+    <ul className="pagination">
+      {/* Кнопка « */}
+      <li className={`page-item ${currentPage === 1 ? 'disabled' : ''}`}>
+        <a
+          data-cy="prevLink"
+          className="page-link"
+          href="#prev"
+          aria-disabled={currentPage === 1}
+          onClick={e => handlePageClick(e, currentPage - 1)}
+        >
+          «
+        </a>
+      </li>
+
+      {/* Список сторінок */}
+      {pages.map(page => (
+        <li
+          key={page}
+          className={`page-item ${currentPage === page ? 'active' : ''}`}
+        >
+          <a
+            data-cy="pageLink"
+            className="page-link"
+            href={`#${page}`}
+            onClick={e => handlePageClick(e, page)}
+          >
+            {page}
+          </a>
+        </li>
+      ))}
+
+      {/* Кнопка » */}
+      <li
+        className={`page-item ${currentPage === totalPages ? 'disabled' : ''}`}
+      >
+        <a
+          data-cy="nextLink"
+          className="page-link"
+          href="#next"
+          aria-disabled={currentPage === totalPages}
+          onClick={e => handlePageClick(e, currentPage + 1)}
+        >
+          »
+        </a>
+      </li>
+    </ul>
+  );
+};

src/index.tsx

@@ -1,5 +1,11 @@
 import { createRoot } from 'react-dom/client';
-
+import { HashRouter as Router } from 'react-router-dom';
 import { App } from './App';
 
-createRoot(document.getElementById('root') as HTMLElement).render(<App />);
+const container = document.getElementById('root') as HTMLElement;
+
+createRoot(container).render(
+  <Router>
+    <App />
+  </Router>,
+);