react_pagination_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://Banderos14.github.io/react_pagination/) and add it to the PR description.

src/App.tsx

@@ -1,25 +1,42 @@
-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 firstItemIndex = (currentPage - 1) * perPage;
+  const lastItemIndex = Math.min(firstItemIndex + perPage, total);
+
+  const visibleItems = items.slice(firstItemIndex, lastItemIndex);
+
   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 {firstItemIndex + 1} - {lastItemIndex} 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={event => {
+              setPerPage(Number(event.target.value));
+              setCurrentPage(1);
+            }}
+          >
             <option value="3">3</option>
             <option value="5">5</option>
             <option value="10">10</option>
@@ -32,78 +49,19 @@ 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={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>
   );

src/components/Pagination/Pagination.tsx

@@ -1 +1,78 @@
-export const Pagination = () => {};
+type Props = {
+  total: number;
+  perPage: number;
+  currentPage: number;
+  onPageChange: (page: number) => void;
+};
+
+export const Pagination = ({
+  total,
+  perPage,
+  currentPage,
+  onPageChange,
+}: Props) => {
+  const totalPages = Math.ceil(total / perPage);
+  const pages = Array.from({ length: totalPages }, (_, index) => index + 1);
+
+  const isFirstPage = currentPage === 1;
+  const isLastPage = currentPage === totalPages;
+
+  return (
+    <ul className="pagination">
+      <li className={`page-item ${isFirstPage ? 'disabled' : ''}`}>
+        <a
+          data-cy="prevLink"
+          className="page-link"
+          href="#prev"
+          aria-disabled={isFirstPage}
+          onClick={event => {
+            event.preventDefault();
+
+            if (!isFirstPage) {
+              onPageChange(currentPage - 1);
+            }
+          }}
+        >
+          «
+        </a>
+      </li>
+
+      {pages.map(page => (
+        <li
+          key={page}
+          className={`page-item ${currentPage === page ? 'active' : ''}`}
+        >
+          <a
+            data-cy="pageLink"
+            className="page-link"
+            href={`#${page}`}
+            onClick={event => {
+              event.preventDefault();
+              onPageChange(page);
+            }}
+          >
+            {page}
+          </a>
+        </li>
+      ))}
+
+      <li className={`page-item ${isLastPage ? 'disabled' : ''}`}>
+        <a
+          data-cy="nextLink"
+          className="page-link"
+          href="#next"
+          aria-disabled={isLastPage}
+          onClick={event => {
+            event.preventDefault();
+
+            if (!isLastPage) {
+              onPageChange(currentPage + 1);
+            }
+          }}
+        >
+          »
+        </a>
+      </li>
+    </ul>
+  );
+};