Peter's Submission

README.md

@@ -1,21 +1,68 @@
-# Problem Set 8.4
-### The Last Time I'll Ever Have You Make Tic-Tac-Toe. I promise. 🤞🏿
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
 
-## Directions
-Refactor your Tic-Tac-Toe app _again_. You have only one goal: implement time travel. In other words, give the user the ability to go back to previous moves. This is a [working demo](https://codepen.io/gaearon/pen/gWWZgR).
+## Available Scripts
 
-Here's the deal: I don't care which tools you use for this job. I want you to reach for to solutions you believer are best for the job. This means you can `useState` or `useReducer`. You can `useContext` or not. It's your choice.
+In the project directory, you can run:
 
-Lastly, you have a class component implementation to use for hints if you get stuck! Refactoring class components to functions is valuable practice and is also one of the objectives of this Problem Set.
+### `yarn start`
 
-Here's to your last ever Tic-Tac-Toe game of your Marcy Lab School career!
+Runs the app in the development mode.<br />
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
 
-I think.
+The page will reload if you make edits.<br />
+You will also see any lint errors in the console.
 
-![cheers gif](https://media.giphy.com/media/g9582DNuQppxC/200w_d.gif)
+### `yarn test`
 
-### Extra Credit
-* Instead of rendering buttons, use React Router so that a user can use the browser to navigate back to previous moves.
+Launches the test runner in the interactive watch mode.<br />
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
 
-## Due Date
-Submit via Pull Request by Monday, May 1 @ 9AM
+### `yarn build`
+
+Builds the app for production to the `build` folder.<br />
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.<br />
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `yarn eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting
+
+### Analyzing the Bundle Size
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size
+
+### Making a Progressive Web App
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app
+
+### Advanced Configuration
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration
+
+### Deployment
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/deployment
+
+### `yarn build` fails to minify
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify

public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

public/manifest.json

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+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

public/robots.txt

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+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

src/App.css

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+body {
+  margin: 0;
+  padding: 20px;
+}
+
+.header {
+  text-align: center;
+}
+
+.square {
+  height: 80px;
+  width: 80px;
+  border: 1px solid black;
+  font-size: 14px;
+}
+
+.board {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+.row {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.time-travel-info {
+  display: flex;
+  justify-content: space-around;
+  flex-direction: column;
+}

src/App.js

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+import React from 'react';
+import './App.css';
+import Board from './components/Game'
+import BoardContextProvider from './context/BoardContextProvider';
+
+
+function App() {
+  return (
+    <div className="App">
+      <BoardContextProvider>
+        <Board />
+      </BoardContextProvider>
+    </div>
+  );
+}
+
+export default App;

src/App.test.js

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+import React from 'react';
+import { render } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  const { getByText } = render(<App />);
+  const linkElement = getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

src/components/Board.jsx

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+import React from 'react'
+import Square from './Square';
+import BoardContext from '../context/BoardContext'
+
+function Board(props) {
+    const { board, setBoard, turn, setTurn, history, setHistory } = useContext(BoardContext);
+
+    function declareWinner(board) {
+        const winningCombos = [
+            [3, 4, 5],
+            [0, 1, 2],
+            [0, 3, 6],
+            [2, 5, 8],
+            [1, 4, 7],
+            [0, 4, 8],
+            [2, 4, 6],
+            [6, 7, 8],
+        ];
+
+        function threeInARow() {
+            for (let i = 0; i < winningCombos.length; i++) {
+                const [first, second, third] = winningCombos[i];
+                // When you get 3 in a row, in any direction.
+                if (board[first] && board[first] === board[second] && board[first] === board[third]) {
+                    return board[first];
+                }
+            }
+            return null;
+        }
+        threeInARow()
+    };
+
+    const winner = declareWinner(board);
+
+    // Check for winner, every move.
+    let status = null;
+    if (winner) {
+        status = `${winner} WON THE GAME!`;
+    };
+
+    function timeTravel(turn) {
+            const boardInHistory = [...history];
+            setBoard(boardInHistory[turn]);
+    }
+
+    function clickHandler(i) {
+        if (!winner && !board[i]) {
+            const newBoard = [...board];
+            const newHistory = [...history];
+            newBoard[i] = turn;
+            setBoard(newBoard);
+            setHistory(newHistory);
+            setTurn((turn === 'X') ? 'O' : 'X');
+        };
+    }
+
+    const moves = history.forEach(square, index => { // use map instead ?
+        const steps = index ? `Go to move ${index}` : 'Restart Game';
+        return (
+            <li key={index}>
+                <button onClick={() => timeTravel(index)}>{steps}</button>
+            </li>
+        )
+    });
+
+    return (
+        <div className='game'>
+            <div className="board">
+                <h4>Currently player {turn}'s turn. Make your move.</h4>
+                <h3>{status}</h3>
+                <h3>{moves}</h3>
+
+                <div className="row board-row">
+                    <Square onClick={() => clickHandler(0)} value={board[0]} />
+                    <Square onClick={() => clickHandler(1)} value={board[1]} />
+                    <Square onClick={() => clickHandler(2)} value={board[2]} />
+                </div>
+
+                <div className="row board-row">
+                    <Square onClick={() => clickHandler(3)} value={board[3]} />
+                    <Square onClick={() => clickHandler(4)} value={board[4]} />
+                    <Square onClick={() => clickHandler(5)} value={board[5]} />
+                </div>
+
+                <div className="row board-row">
+                    <Square onClick={() => clickHandler(6)} value={board[6]} />
+                    <Square onClick={() => clickHandler(7)} value={board[7]} />
+                    <Square onClick={() => clickHandler(8)} value={board[8]} />
+                </div>
+            </div>
+            <div className='game-data'>
+                <div>{status}</div>
+                <ol>{moves}</ol>
+            </div>
+        </div>
+    );
+}
+
+export default Board

src/components/Square.jsx

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+import React from 'react'
+
+function Square(props) {
+    return (
+        <button className="button" onClick={props.click}>{props.value}</button>
+    );
+}
+
+export default Square

src/context/BoardContext.jsx

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+import React, {useContext} from 'react'
+
+const BoardContext = React.createContext({});
+
+export default BoardContext

src/context/BoardContextProvider.jsx

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+import React, { useState } from "react";
+import BoardContext from "./BoardContext";
+
+export const BoardContextProvider = ({ children }) => {
+    const [board, setBoard] = useState(new Array(9).fill(""));
+    const [turn, setTurn] = useState('X');
+    const [history, setHistory] = useState([]);
+    const value = {
+        board,
+        setBoard,
+        turn,
+        setTurn,
+        history,
+        setHistory,
+    };
+    return (
+        <BoardContext.Provider value={value}>
+            {children}
+        </BoardContext.Provider>
+    );
+
+};
+
+export default BoardContextProvider;

src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import App from './App';
+import * as serviceWorker from './serviceWorker';
+
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  document.getElementById('root')
+);
+
+// If you want your app to work offline and load faster, you can change
+// unregister() to register() below. Note this comes with some pitfalls.
+// Learn more about service workers: https://bit.ly/CRA-PWA
+serviceWorker.unregister();