All exercises done

db.json

+{
+  "persons": [
+    {
+      "name": "Arto Hellas",
+      "number": "040-123456",
+      "id": 1
+    },
+    {
+      "name": "Martti Tienari",
+      "number": "040-123456",
+      "id": 2
+    },
+    {
+      "name": "Arto Järvinen",
+      "number": "040-123456",
+      "id": 3
+    },
+    {
+      "name": "Lea Kutvonen",
+      "number": "040-123456",
+      "id": 4
+    }
+  ]
+}
\ No newline at end of file

package-lock.json

@@ -1813,6 +1813,22 @@
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
     },
+    "axios": {
+      "version": "0.18.0",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.18.0.tgz",
+      "integrity": "sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=",
+      "requires": {
+        "follow-redirects": "^1.3.0",
+        "is-buffer": "^1.1.5"
+      },
+      "dependencies": {
+        "is-buffer": {
+          "version": "1.1.6",
+          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
+          "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w=="
+        }
+      }
+    },
     "axobject-query": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-2.0.2.tgz",
@@ -2838,11 +2854,13 @@
             },
             "balanced-match": {
               "version": "1.0.0",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "brace-expansion": {
               "version": "1.1.11",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "balanced-match": "^1.0.0",
                 "concat-map": "0.0.1"
@@ -2855,15 +2873,18 @@
             },
             "code-point-at": {
               "version": "1.1.0",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "concat-map": {
               "version": "0.0.1",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "console-control-strings": {
               "version": "1.1.0",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "core-util-is": {
               "version": "1.0.2",
@@ -2966,7 +2987,8 @@
             },
             "inherits": {
               "version": "2.0.3",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "ini": {
               "version": "1.3.5",
@@ -2976,6 +2998,7 @@
             "is-fullwidth-code-point": {
               "version": "1.0.0",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "number-is-nan": "^1.0.0"
               }
@@ -2988,17 +3011,20 @@
             "minimatch": {
               "version": "3.0.4",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "brace-expansion": "^1.1.7"
               }
             },
             "minimist": {
               "version": "0.0.8",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "minipass": {
               "version": "2.3.5",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "safe-buffer": "^5.1.2",
                 "yallist": "^3.0.0"
@@ -3015,6 +3041,7 @@
             "mkdirp": {
               "version": "0.5.1",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "minimist": "0.0.8"
               }
@@ -3087,7 +3114,8 @@
             },
             "number-is-nan": {
               "version": "1.0.1",
-              "bundled": true
+              "bundled": true,
+              "optional": true
             },
             "object-assign": {
               "version": "4.1.1",
@@ -3097,6 +3125,7 @@
             "once": {
               "version": "1.4.0",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "wrappy": "1"
               }
@@ -3202,6 +3231,7 @@
             "string-width": {
               "version": "1.0.2",
               "bundled": true,
+              "optional": true,
               "requires": {
                 "code-point-at": "^1.0.0",
                 "is-fullwidth-code-point": "^1.0.0",

package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "axios": "^0.18.0",
     "react": "^16.8.4",
     "react-dom": "^16.8.4",
     "react-scripts": "2.1.8"
@@ -11,7 +12,8 @@
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "eject": "react-scripts eject",
+    "server": "json-server -p3001 db.json"
   },
   "eslintConfig": {
     "extends": "react-app"

src/App.css

-.App {
-  text-align: center;
-}
-
-.App-logo {
-  animation: App-logo-spin infinite 20s linear;
-  height: 40vmin;
-  pointer-events: none;
-}
-
-.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);
-  }
-}

src/App.js

-import React, { Component } from 'react';
-import logo from './logo.svg';
-import './App.css';
+import React from 'react';
+import { Numbers, Header } from './PhoneList';
+import axios from 'axios';
 
-class App extends Component {
+class App extends React.Component {
+  constructor(props) {
+    super(props)
+    this.state = {
+      persons: [],
+      newName: '',
+      newNumber: '',
+    }
+  }
+
+  /** Upon entering the webpage get persons' data from the server */
+  componentDidMount() {
+    this.callServerData();
+  }
+
+  /**GETS persons data from server and sets response to state */
+  callServerData() {
+    axios
+      .get('http://localhost:3001/persons')
+      .then(response =>{
+        this.setState({persons: response.data})
+      })
+  }
+
+  /**Adds person to directory and sends it to server
+   * Doesn't allow duplicate names!
+   */
+  addPerson = (event) => {
+    event.preventDefault();
+    
+    //Create new person from given info
+    const newPerson = {
+      name: this.state.newName,
+      number: this.state.newNumber,
+    }
+
+    /**Check if name already exists in the list */
+    let exists = false;
+    this.state.persons.forEach(person => {
+      if(person.name === newPerson.name) {
+        alert('Nimi on jo olemassa');
+        exists = true;
+      }
+    });
+
+    /**Add name and send to server 
+     * if it doesn't already exist */
+    if(!exists) {
+      axios
+        .post('http://localhost:3001/persons', newPerson)
+        .then(response => {
+          this.setState({
+            persons: this.state.persons.concat(response.data),
+            newName: '',
+            newNumber: '',
+          });
+        });
+    }
+  }
+
+  /**
+   * Refreshes newName state when user types to input field */
+  handleNameChange = (event) => {
+    this.setState({
+      newName: event.target.value,
+    });
+  }
+
+  /**
+   * Refreshes newNumber state when user types to input field */
+  handleNumberChange = (event) => {
+    this.setState({
+      newNumber: event.target.value,
+    });
+  }
+
+  /**App render function */
   render() {
     return (
-      <div className="App">
-        <header className="App-header">
-          <img src={logo} className="App-logo" alt="logo" />
-          <p>
-            Edit <code>src/App.js</code> and save to reload.
-          </p>
-          <a
-            className="App-link"
-            href="https://reactjs.org"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Learn React
-          </a>
-        </header>
+      <div>
+        <Header title="Puhelinluettelo" />
+
+        {/**Input form */}
+        <form onSubmit={this.addPerson}>
+          
+          {/**Name */}
+          <div>
+            nimi: <input  value={this.state.newName} 
+                          onChange={this.handleNameChange} />
+          </div>
+          {/**Number */}
+          <div>
+            numero: <input  value={this.state.newNumber}
+                            onChange={this.handleNumberChange}/>
+          </div>
+          {/**Submit button */}
+          <div>
+            <button type="submit">lisää</button>
+          </div>
+        </form>
+        
+        {/**Creates the Phone directory table
+         * callServerData function is given as 
+         * callback function to handle refresh after
+         * person is deleted from directory 
+         */}
+        <Numbers persons={this.state.persons} 
+          refreshOnDeleteCall={this.callServerData.bind(this)}/>
       </div>
-    );
+    )
   }
 }
 

src/App.test.js

-import React from 'react';
-import ReactDOM from 'react-dom';
-import App from './App';
-
-it('renders without crashing', () => {
-  const div = document.createElement('div');
-  ReactDOM.render(<App />, div);
-  ReactDOM.unmountComponentAtNode(div);
-});

src/PhoneList.js

+import React from 'react';
+import axios from 'axios';
+
+/**Asks user to confirm deletion
+ * and sends server the order to delete person.
+ * At the end calls callback function
+ * which is supposed to refresh the App state from server.
+ */
+const deletePerson = (person, callback) => {
+  let result = window.confirm(`Poistetaanko ${person.name}?`);
+  if(result) {
+    axios
+    .delete(`http://localhost:3001/persons/${person.id}`)
+    .then(callback)
+  }
+}
+
+/**Header component 
+ * takes title text as prop
+*/
+const Header = ({title}) => <h2>{title}</h2>;
+
+/**Numbers Component 
+ * takes persons list and callback function 
+ * that is called after a person is deleted from the list
+ * (Used to refresh the table)
+*/
+const Numbers = ({persons, refreshOnDeleteCall}) => (
+    <div>
+      {/** Header */}
+      <Header title="Numerot"/>
+      {/** Persons directory in a table form
+       * Consists of 3 columns: name, phonenumber and button to delete the person */}
+      <table>
+        <tbody>
+          {persons.map(person =>  <tr key={person.id}>
+                                    <td>{person.name}</td>
+                                    <td>{person.number}</td>
+                                    {/** Delete button */}
+                                    <td>
+                                      <button 
+                                        onClick={() => deletePerson(person, refreshOnDeleteCall)}>
+                                        poista
+                                      </button>
+                                    </td>
+                                  </tr>)}
+        </tbody>
+      </table>
+    </div>
+  );
+
+export { Numbers, Header };
\ No newline at end of file

src/index.css

-body {
-  margin: 0;
-  padding: 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

 import React from 'react';
 import ReactDOM from 'react-dom';
-import './index.css';
 import App from './App';
-import * as serviceWorker from './serviceWorker';
 
 ReactDOM.render(<App />, document.getElementById('root'));
\ No newline at end of file
-
-// 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();

src/logo.svg

-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
-    <g fill="#61DAFB">
-        <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
-        <circle cx="420.9" cy="296.5" r="45.7"/>
-        <path d="M520.5 78.1z"/>
-    </g>
-</svg>

src/serviceWorker.js

-// This optional code is used to register a service worker.
-// register() is not called by default.
-
-// This lets the app load faster on subsequent visits in production, and gives
-// it offline capabilities. However, it also means that developers (and users)
-// will only see deployed updates on subsequent visits to a page, after all the
-// existing tabs open on the page have been closed, since previously cached
-// resources are updated in the background.
-
-// To learn more about the benefits of this model and instructions on how to
-// opt-in, read https://bit.ly/CRA-PWA
-
-const isLocalhost = Boolean(
-  window.location.hostname === 'localhost' ||
-    // [::1] is the IPv6 localhost address.
-    window.location.hostname === '[::1]' ||
-    // 127.0.0.1/8 is considered localhost for IPv4.
-    window.location.hostname.match(
-      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
-    )
-);
-
-export function register(config) {
-  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
-    // The URL constructor is available in all browsers that support SW.
-    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
-    if (publicUrl.origin !== window.location.origin) {
-      // Our service worker won't work if PUBLIC_URL is on a different origin
-      // from what our page is served on. This might happen if a CDN is used to
-      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
-      return;
-    }
-
-    window.addEventListener('load', () => {
-      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
-
-      if (isLocalhost) {
-        // This is running on localhost. Let's check if a service worker still exists or not.
-        checkValidServiceWorker(swUrl, config);
-
-        // Add some additional logging to localhost, pointing developers to the
-        // service worker/PWA documentation.
-        navigator.serviceWorker.ready.then(() => {
-          console.log(
-            'This web app is being served cache-first by a service ' +
-              'worker. To learn more, visit https://bit.ly/CRA-PWA'
-          );
-        });
-      } else {
-        // Is not localhost. Just register service worker
-        registerValidSW(swUrl, config);
-      }
-    });
-  }
-}
-
-function registerValidSW(swUrl, config) {
-  navigator.serviceWorker
-    .register(swUrl)
-    .then(registration => {
-      registration.onupdatefound = () => {
-        const installingWorker = registration.installing;
-        if (installingWorker == null) {
-          return;
-        }
-        installingWorker.onstatechange = () => {
-          if (installingWorker.state === 'installed') {
-            if (navigator.serviceWorker.controller) {
-              // At this point, the updated precached content has been fetched,
-              // but the previous service worker will still serve the older
-              // content until all client tabs are closed.
-              console.log(
-                'New content is available and will be used when all ' +
-                  'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
-              );
-
-              // Execute callback
-              if (config && config.onUpdate) {
-                config.onUpdate(registration);
-              }
-            } else {
-              // At this point, everything has been precached.
-              // It's the perfect time to display a
-              // "Content is cached for offline use." message.
-              console.log('Content is cached for offline use.');
-
-              // Execute callback
-              if (config && config.onSuccess) {
-                config.onSuccess(registration);
-              }
-            }
-          }
-        };
-      };
-    })
-    .catch(error => {
-      console.error('Error during service worker registration:', error);
-    });
-}
-
-function checkValidServiceWorker(swUrl, config) {
-  // Check if the service worker can be found. If it can't reload the page.
-  fetch(swUrl)
-    .then(response => {
-      // Ensure service worker exists, and that we really are getting a JS file.
-      const contentType = response.headers.get('content-type');
-      if (
-        response.status === 404 ||
-        (contentType != null && contentType.indexOf('javascript') === -1)
-      ) {
-        // No service worker found. Probably a different app. Reload the page.
-        navigator.serviceWorker.ready.then(registration => {
-          registration.unregister().then(() => {
-            window.location.reload();
-          });
-        });
-      } else {
-        // Service worker found. Proceed as normal.
-        registerValidSW(swUrl, config);
-      }
-    })
-    .catch(() => {
-      console.log(
-        'No internet connection found. App is running in offline mode.'
-      );
-    });
-}
-
-export function unregister() {
-  if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.ready.then(registration => {
-      registration.unregister();
-    });
-  }
-}