HW 11 done

11/.gitignore

@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

11/README.md

@@ -0,0 +1,70 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
+
+The page will reload when you make changes.\
+You may also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+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.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run 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](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](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](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](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](https://facebook.github.io/create-react-app/docs/deployment)
+
+### `npm run build` fails to minify
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

11/package.json

@@ -0,0 +1,38 @@
+{
+  "name": "11",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@testing-library/jest-dom": "^5.16.5",
+    "@testing-library/react": "^13.4.0",
+    "@testing-library/user-event": "^13.5.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

11/public/index.html

@@ -0,0 +1,91 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Store</title>
+  <style>
+    body {
+      overflow: hidden;
+      box-sizing: border-box;
+    }
+
+    #logo {
+      display: flex;
+      width: 100px;
+      margin: auto;
+    }
+  </style>
+</head>
+
+<body>
+  <header style="background-color: lightgray;">
+    <a>
+      <img src="images/logo.png" alt="logo" id="logo">
+    </a>
+  </header>
+
+  <div class="wrapper">
+    <hr>
+    <select id="product">
+      <option value="beer" id="pivo1">Beer</option>
+      <option value="chips" id="chips1">Chips</option>
+      <option value="smoke" id="sigi1">Smoke</option>
+    </select>
+    <input type="number" id="number" placeholder="Enter the amount...">
+    <button id="button">Buy</button>
+
+  </div>
+
+  <div class="availability">
+    <h1>Goods:</h1>
+    <div style="display: flex; justify-content:space-around;">
+
+      <div class="pivo2">
+
+        <img src="images/beer.png" alt="" style="max-height: 200px; max-width: 200px">
+        <h2 style="text-align: center">Beer: <span id="pivo"></span></h2>
+        <h2 style="text-align: center">Price: <span id="pivoK"></span></h2>
+
+      </div>
+
+      <div class="chips2">
+
+        <img src="images/chips.png" alt="" style="max-height: 200px; max-width: 200px">
+        <h2 style="text-align: center">Chips: <span id="chips"></span></h2>
+        <h2 style="text-align: center">Price: <span id="chipsK"></span></h2>
+
+      </div>
+
+      <div class="sigi2">
+
+        <img src="images/smoke.png" alt="" style="max-height: 200px; max-width: 200px">
+        <h2 style="text-align: center">Smoke: <span id="sigi"></span></h2>
+        <h2 style="text-align: center">Price: <span id="sigiK"></span></h2>
+
+      </div>
+
+    </div>
+  </div>
+  <hr>
+  <div style="display: flex; justify-content:space-between;">
+
+    <div class="cashbox">
+
+      <h2>Paydesk: <span id="kassa"></span></h2>
+      <img src="images/cash-machine.png" alt="" style="height: 100px">
+
+    </div>
+    <div class="wallet">
+
+      <h2>Cash: <span id="money"></span></h2>
+      <img src="images/wallet.png" alt="" style="height: 100px; margin-left: auto; display: block">
+
+    </div>
+    <script src="index.js"></script>
+  </div>
+</body>
+
+</html>

11/public/manifest.json

@@ -0,0 +1,25 @@
+{
+  "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"
+}

11/public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

11/src/App.css

@@ -0,0 +1,38 @@
+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
+.App-header {
+  background-color: #282c34;
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+  color: white;
+}
+
+.App-link {
+  color: #61dafb;
+}
+
+@keyframes App-logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}

11/src/App.js

@@ -0,0 +1,100 @@
+// общие правила
+
+// * влияние на store (изменение state) происходит через store.dispatch(какой-то экшон криейтор(какие-то параметры))
+// * отображение состояния state на экране происходит через store.subscribe(какая-то ваша функция, которая делает 
+// store.getState() и меняет DOM)
+
+// Менять код createStore не надо
+
+// Задачи
+
+// * сделать отображение всего того, что есть в ларьке (можете хоть витрину нарисовать, если интересно) с количествами;
+// * сделать select для выбора товара и input type='number' для выбора количества и кнопку "купить", которая посылает action
+// в store используя actionCreator для создания action
+// * добавить в reducer проверку на уход в минус, что бы нельзя было продать то, чего нет в должном количестве.
+// * добавить в state цену каждого товара и поле касса. Для этого вместо структуры вида beer: 100 используйте beer: 
+// КАКОЙ-ТО ОБЪЕКТ С КОЛИЧЕСТВОМ И СТОИМОСТЬЮ ОДНОЙ ЕДИНИЦЫ. В action добавьте поле "бабло". 
+// Всё это пишется в reducer, не забудьте проверки что бабла хватает.
+// * добавьте в интерфейс поле для денег.
+
+function reducer(state, { type, obj, amount }) {
+
+    if (!state) {
+        return {
+            beer: { number: 100, price: 5 },
+            chips: { number: 50, price: 3 },
+            smoke: { number: 50, price: 7 },
+            cash: { cashbox: 0, mycash: 100 }
+        }
+    }
+    if (type === 'BUY') {
+        if ((state[obj].number) >= 0 && state.cash.mycash - state[obj].price * amount >= 0) {
+            if ((amount >= 0)) {
+                return {
+                    ...state,
+                    [obj]: { ...state[obj], number: state[obj].number - amount },
+                    cash: {
+                        mycash: state.cash.mycash - state[obj].price * amount,
+                        cashbox: state.cash.cashbox + state[obj].price * amount
+                    }
+                }
+            }
+            if (amount < 0){
+                return{
+                    ...state, cashbox: state.cashbox * 0
+                }
+            }
+        }
+    }
+    return state
+}
+
+function createStore(reducer) {
+    let state = reducer(undefined, {})
+    let cbs = []
+
+    const getState = () => state
+    const subscribe = cb => (cbs.push(cb),
+        () => cbs = cbs.filter(c => c !== cb))
+
+    const dispatch = action => {
+        const newState = reducer(state, action)
+        if (newState !== state) {
+            state = newState
+            for (let cb of cbs) cb()
+        }
+    }
+
+    return {
+        getState,
+        dispatch,
+        subscribe
+    }
+}
+
+const store = createStore(reducer)
+console.log(store.getState())
+
+let productN = document.getElementById("product");
+let numberN = document.getElementById("number");
+let buttonN = document.getElementById("button");
+
+let pivoN = document.getElementById("pivo").innerHTML = store.getState().beer.number
+let chipsN = document.getElementById("chips").innerHTML = store.getState().chips.number
+let sigiN = document.getElementById("sigi").innerHTML = store.getState().smoke.number
+
+let pivoM = document.getElementById("pivoK").innerHTML = store.getState().beer.price + '$'
+let chipsM = document.getElementById("chipsK").innerHTML = store.getState().chips.price + '$'
+let sigiM = document.getElementById("sigiK").innerHTML = store.getState().smoke.price + '$'
+
+let kassaN = document.getElementById("kassa").innerHTML = store.getState().cash.cashbox + '$'
+let moneyN = document.getElementById("money").innerHTML = store.getState().cash.mycash + '$'
+
+buttonN.onclick = () => {
+    store.dispatch({ type: 'BUY', obj: productN.value, amount: numberN.value })
+    let pivoN = document.getElementById("pivo").innerHTML = store.getState().beer.number
+    let chipsN = document.getElementById("chips").innerHTML = store.getState().chips.number
+    let sigiN = document.getElementById("sigi").innerHTML = store.getState().smoke.number
+    let kassaN = document.getElementById("kassa").innerHTML = store.getState().cash.cashbox + '$'
+    let moneyN = document.getElementById("money").innerHTML = store.getState().cash.mycash + '$'
+}

11/src/App.test.js

@@ -0,0 +1,8 @@
+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

11/src/index.css

@@ -0,0 +1,13 @@
+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;
+}

11/src/index.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

11/src/reportWebVitals.js

@@ -0,0 +1,13 @@
+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

11/src/setupTests.js

@@ -0,0 +1,5 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';