add task 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:
@@ -24,12 +24,12 @@ You a given a list of items and markup for the `Pagination`. Implement the
 1. Show the pagination info inside `data-cy="info"` in the next format `Page 1 (items 1 - 5 of 42)`;
 1. Implement the `<select data-cy="perPageSelector">` with `3`, `5`, `10`, `20` options to change the `perPage`;
     - show the 1st page after changing a `perPage`;
-1. (*) Use React Router to save `?page=2&perPage=7` in the URL and apply them on page load
+10. (*) Use React Router to save `?page=2&perPage=7` in the URL and apply them on page load
 
 ## Instructions
 
 - Install Prettier Extention and use this [VSCode settings](https://mate-academy.github.io/fe-program/tools/vscode/settings.json) to enable format on save.
 - 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://Cumacea.github.io/react_pagination/) and add it to the PR description.

src/App.tsx

@@ -1,25 +1,49 @@
 import React from 'react';
+import { useSearchParams } from 'react-router-dom';
 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}`);
+const TOTAL = 42;
+const items = getNumbers(1, TOTAL).map(n => `Item ${n}`);
 
 export const App: React.FC = () => {
+  const [searchParams, setSearchParams] = useSearchParams();
+
+  const currentPage = Number(searchParams.get('page') || 1);
+  const perPage = Number(searchParams.get('perPage') || 5);
+
+  const onPageChange = (page: number) => {
+    setSearchParams({ page: String(page), perPage: String(perPage) });
+  };
+
+  const handleSelectChange = (event: React.ChangeEvent<HTMLSelectElement>) => {
+    setSearchParams({ page: '1', perPage: event.target.value });
+  };
+
+  const start = (currentPage - 1) * perPage;
+  const end = start + perPage;
+  const startItem = start + 1;
+  const lastItem = Math.min(end, TOTAL);
+
   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} - {lastItem} 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={handleSelectChange}
+          >
             <option value="3">3</option>
             <option value="5">5</option>
             <option value="10">10</option>
@@ -32,78 +56,19 @@ 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={onPageChange}
+      />
+
       <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>
+        {items.slice(start, end).map(item => (
+          <li key={item} data-cy="item">
+            {item}
+          </li>
+        ))}
       </ul>
     </div>
   );

src/components/Pagination/Pagination.tsx

@@ -1 +1,86 @@
-export const Pagination = () => {};
+import React from 'react';
+import classNames from 'classnames';
+import { getNumbers } from '../../utils';
+
+type Props = {
+  total: number;
+  perPage: number;
+  currentPage?: number;
+  onPageChange: (page: number) => void;
+};
+
+export const Pagination: React.FC<Props> = ({
+  total,
+  perPage,
+  currentPage = 1,
+  onPageChange,
+}) => {
+  const pagesCount = Math.ceil(total / perPage);
+  const pages = getNumbers(1, pagesCount);
+
+  return (
+    <ul className="pagination">
+      <li className={classNames('page-item', { disabled: currentPage === 1 })}>
+        <a
+          data-cy="prevLink"
+          className="page-link"
+          href="#prev"
+          aria-disabled={currentPage === 1 ? 'true' : 'false'}
+          onClick={event => {
+            event.preventDefault();
+
+            if (currentPage !== 1) {
+              onPageChange(currentPage - 1);
+            }
+          }}
+        >
+          «
+        </a>
+      </li>
+
+      {pages.map(page => (
+        <li
+          key={page}
+          className={classNames('page-item', { active: currentPage === page })}
+        >
+          <a
+            data-cy="pageLink"
+            className="page-link"
+            href={`#${page}`}
+            onClick={event => {
+              event.preventDefault();
+
+              if (page !== currentPage) {
+                onPageChange(page);
+              }
+            }}
+          >
+            {page}
+          </a>
+        </li>
+      ))}
+
+      <li
+        className={classNames('page-item', {
+          disabled: currentPage === pagesCount,
+        })}
+      >
+        <a
+          data-cy="nextLink"
+          className="page-link"
+          href="#next"
+          aria-disabled={currentPage === pagesCount ? 'true' : 'false'}
+          onClick={event => {
+            event.preventDefault();
+
+            if (currentPage !== pagesCount) {
+              onPageChange(currentPage + 1);
+            }
+          }}
+        >
+          »
+        </a>
+      </li>
+    </ul>
+  );
+};

src/index.tsx

@@ -1,5 +1,10 @@
 import { createRoot } from 'react-dom/client';
+import { BrowserRouter } from 'react-router-dom';
 
 import { App } from './App';
 
-createRoot(document.getElementById('root') as HTMLElement).render(<App />);
+createRoot(document.getElementById('root') as HTMLElement).render(
+  <BrowserRouter>
+    <App />
+  </BrowserRouter>,
+);