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import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter as Router, Route, Link } from 'react-router-dom';
import Icon from './components/Icon';
import { Discover, Discussions } from './components/Feeds';
import Post from './components/Post';
import Thread from './components/Thread';
import LoginButton from './components/LoginButton';
import Footer from './components/Footer';
import Avatar from './components/Avatar';
const elClassHidden = 'header--hidden'
const elClassBackground = 'header--background';
class App extends React.Component {
constructor(props) {
super(props);
this.auth = this.auth.bind(this);
this.state = {
visitor: { uid: 0 },
headerClassName: ''
};
this.dHeight = 0;
this.wHeight = 0;
this.wScrollCurrent = 0;
this.wScrollBefore = 0;
this.wScrollDiff = 0;
window.addEventListener('scroll', this.throttle(500, () => {
this.dHeight = document.body.offsetHeight;
this.wHeight = window.innerHeight;
this.wScrollCurrent = window.pageYOffset;
this.wScrollDiff = this.wScrollBefore - this.wScrollCurrent;
if (this.wScrollCurrent <= 0) {
// scrolled to the very top; element sticks to the top
this.setState({
headerClassName: ''
})
} else if (this.wScrollDiff > 0 && this.state.headerClassName.indexOf(elClassHidden) >=0) {
// scrolled up; element slides in
this.setState({
headerClassName: elClassBackground
})
} else if (this.wScrollDiff < 0) {
// scrolled down
if (this.wScrollCurrent + this.wHeight >= this.dHeight && this.state.headerClassName.indexOf(elClassHidden) >=0) {
// scrolled to the very bottom; element slides in
this.setState({
headerClassName: elClassBackground
})
} else {
// scrolled down; element slides out
this.setState({
headerClassName: [elClassHidden, elClassBackground].join(' ')
})
}
}
this.wScrollBefore = this.wScrollCurrent;
}));
this.auth(window.localStorage.hash || '')
}
throttle(delay, fn) {
var last, deferTimer;
return function () {
var context = this, args = arguments, now = +new Date;
if (last && now < last + delay) {
clearTimeout(deferTimer);
deferTimer = setTimeout(
function () {
last = now;
fn.apply(context, args);
},
delay);
} else {
last = now;
fn.apply(context, args);
}
};
};
render() {
return (
<Router>
<React.Fragment>
<header className={this.state.headerClassName}>
<div id="header_wrapper">
{this.state.visitor.uid > 0 ?
<div id="ctitle">
<Avatar user={this.state.visitor} />
</div>
:
<div id="logo"><Link to="/">Juick</Link></div>
}
<div id="search">
<form action="/">
<input name="search" className="text"
placeholder="Search..." />
</form>
</div>
<nav id="global">
<ul>
{this.state.visitor.uid > 0 ?
<li><Link to={{ pathname: '/discussions' }}><Icon name="ei-comment" size="s" />Discuss</Link></li>
:
<li><Link to='/?media=1' rel="nofollow"><Icon name="ei-camera" size="s" />Photos</Link></li>
}
<li><Link to={{ pathname: '/' }} rel="nofollow"><Icon name="ei-search" size="s" />Discover</Link></li>
<li>
{this.state.visitor.uid > 0 ?
<Link to={{ pathname: '/post' }}><Icon name="ei-pencil" size="s" />Post</Link>
:
<LoginButton title="Login" onAuth={this.auth.bind(this)} />
}
</li>
</ul>
</nav>
</div>
</header>
<div id="wrapper">
<section id="content">
<Route exact path="/" render={(props) => <Discover visitor={this.state.visitor} {...props} />} />
<Route exact path="/discussions" render={(props) => <Discussions visitor={this.state.visitor} {...props} />} />
<Route exact path="/:user/:mid" render={(props) => <Thread visitor={this.state.visitor} {...props} />} />
<Route exact path="/post" render={(props) => <Post visitor={this.state.visitor} {...props} />} />
</section>
<aside id="column"></aside>
</div>
<Footer />
</React.Fragment>
</Router>
)
}
auth(data) {
if (data) {
window.localStorage.hash = data;
fetch(`https://api.juick.com/users?hash=${data}`)
.then(response => {
return response.json()
})
.then(users => {
let visitor = users[0]
visitor.hash = data
this.setState({
visitor: visitor
})
})
}
}
}
let container = document.createElement('div');
ReactDOM.render(<App />, container);
let body = document.getElementById('wrapper').parentNode;
body.replaceChild(container.getElementsByTagName('header')[0], body.querySelector('#header'));
body.replaceChild(container.querySelector('#wrapper'), body.querySelector('#wrapper'));
body.replaceChild(container.querySelector('#footer'), body.querySelector('#footer'));
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