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| 1 | +import React, { Component } from 'react' |
| 2 | +import firebase from 'firebase' |
| 3 | +import 'isomorphic-fetch' |
| 4 | +import { clientCredentials } from '../firebaseCredentials' |
| 5 | + |
| 6 | +export default class Index extends Component { |
| 7 | + static async getInitialProps ({req, query}) { |
| 8 | + const user = req && req.session ? req.session.decodedToken : null |
| 9 | + const snap = await req.firebaseServer.database().ref('messages').once('value') |
| 10 | + return { user, messages: snap.val() } |
| 11 | + } |
| 12 | + |
| 13 | + constructor (props) { |
| 14 | + super(props) |
| 15 | + this.state = { |
| 16 | + user: this.props.user, |
| 17 | + value: '', |
| 18 | + messages: this.props.messages |
| 19 | + } |
| 20 | + |
| 21 | + this.addDbListener = this.addDbListener.bind(this) |
| 22 | + this.handleChange = this.handleChange.bind(this) |
| 23 | + this.handleSubmit = this.handleSubmit.bind(this) |
| 24 | + } |
| 25 | + |
| 26 | + componentDidMount () { |
| 27 | + firebase.initializeApp(clientCredentials) |
| 28 | + |
| 29 | + if (this.state.user) this.addDbListener() |
| 30 | + |
| 31 | + firebase.auth().onAuthStateChanged(user => { |
| 32 | + if (user) { |
| 33 | + this.setState({ user: user }) |
| 34 | + return user.getToken() |
| 35 | + .then((token) => { |
| 36 | + // eslint-disable-next-line no-undef |
| 37 | + return fetch('/api/login', { |
| 38 | + method: 'POST', |
| 39 | + // eslint-disable-next-line no-undef |
| 40 | + headers: new Headers({ 'Content-Type': 'application/json' }), |
| 41 | + credentials: 'same-origin', |
| 42 | + body: JSON.stringify({ token }) |
| 43 | + }) |
| 44 | + }).then((res) => this.addDbListener()) |
| 45 | + } else { |
| 46 | + this.setState({ user: null }) |
| 47 | + // eslint-disable-next-line no-undef |
| 48 | + fetch('/api/logout', { |
| 49 | + method: 'POST', |
| 50 | + credentials: 'same-origin' |
| 51 | + }).then(() => firebase.database().ref('messages').off()) |
| 52 | + } |
| 53 | + }) |
| 54 | + } |
| 55 | + |
| 56 | + addDbListener () { |
| 57 | + firebase.database().ref('messages').on('value', snap => { |
| 58 | + const messages = snap.val() |
| 59 | + if (messages) this.setState({ messages }) |
| 60 | + }) |
| 61 | + } |
| 62 | + |
| 63 | + handleChange (event) { |
| 64 | + this.setState({ value: event.target.value }) |
| 65 | + } |
| 66 | + |
| 67 | + handleSubmit (event) { |
| 68 | + event.preventDefault() |
| 69 | + const date = new Date().getTime() |
| 70 | + firebase.database().ref(`messages/${date}`).set({ |
| 71 | + id: date, |
| 72 | + text: this.state.value |
| 73 | + }) |
| 74 | + this.setState({ value: '' }) |
| 75 | + } |
| 76 | + |
| 77 | + handleLogin () { |
| 78 | + firebase.auth().signInWithPopup(new firebase.auth.GoogleAuthProvider()) |
| 79 | + } |
| 80 | + |
| 81 | + handleLogout () { |
| 82 | + firebase.auth().signOut() |
| 83 | + } |
| 84 | + |
| 85 | + render () { |
| 86 | + const { user, value, messages } = this.state |
| 87 | + |
| 88 | + return <div> |
| 89 | + { |
| 90 | + user |
| 91 | + ? <button onClick={this.handleLogout}>Logout</button> |
| 92 | + : <button onClick={this.handleLogin}>Login</button> |
| 93 | + } |
| 94 | + { |
| 95 | + user && |
| 96 | + <div> |
| 97 | + <form onSubmit={this.handleSubmit}> |
| 98 | + <input |
| 99 | + type={'text'} |
| 100 | + onChange={this.handleChange} |
| 101 | + placeholder={'add message'} |
| 102 | + value={value} |
| 103 | + /> |
| 104 | + </form> |
| 105 | + <ul> |
| 106 | + { |
| 107 | + messages && |
| 108 | + Object.keys(messages).map(key => <li key={key}>{messages[key].text}</li>) |
| 109 | + } |
| 110 | + </ul> |
| 111 | + </div> |
| 112 | + } |
| 113 | + </div> |
| 114 | + } |
| 115 | +} |
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