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import React from 'react';
import PropTypes from 'prop-types';
import { Link } from 'react-router-dom';
import * as qs from 'query-string';
import moment from 'moment';
import Message from './Message';
import Spinner from './Spinner';
import { getMessages } from '../api';
export function Discover(props) {
const query = {
baseUrl: "/messages",
pageParam: 'before_mid'
};
return (<Feed query={query} {...props} />)
}
export function Discussions(props) {
const query = {
baseUrl: "/messages/discussions",
pageParam: 'to'
};
return (<Feed authRequired="true" query={query} {...props} />)
}
export function Blog(props) {
const { user } = props.match.params;
const query = {
baseUrl: `/messages`,
search: {
uname: user
},
pageParam: 'before_mid'
};
return (<Feed query={query} {...props} />)
}
export function Tag(props) {
const { tag } = props.match.params;
const query = {
baseUrl: '/messages',
search: {
tag: tag
},
pageParam: 'before_mid'
};
return (<Feed query={query} {...props} />)
}
export function Home(props) {
const query = {
baseUrl: '/home',
pageParam: 'before_mid'
};
return (<Feed authRequired="true" query={query} {...props} />)
}
class Feed extends React.Component {
constructor(props) {
super(props);
this.state = {
msgs: []
};
}
componentDidMount() {
this.loadMessages(this.props.visitor.hash, this.props.location.search);
}
componentWillReceiveProps(nextProps) {
if (this.props.location.search != nextProps.location.search
|| this.props.visitor != nextProps.visitor) {
this.loadMessages(nextProps.visitor.hash, nextProps.location.search)
}
}
loadMessages = (hash = '', filter = '') => {
document.body.scrollTop = 0;
document.documentElement.scrollTop = 0;
this.setState({ msgs: [] })
const filterParams = qs.parse(filter);
let params = Object.assign({}, filterParams || {}, this.props.query.search || {});
let url = this.props.query.baseUrl;
if (hash) {
params.hash = hash;
}
if (!params.hash && this.props.authRequired) {
this.props.history.push('/')
}
getMessages(url, params)
.then(response => {
const { data } = response;
const { pageParam } = this.props.query;
const lastMessage = data.slice(-1)[0] || {};
const pageValue = pageParam === 'before_mid' ? lastMessage.mid : moment.utc(lastMessage.updated).valueOf();
let newFilter = Object.assign({}, filterParams);
newFilter[pageParam] = pageValue;
const nextpage = `?${qs.stringify(newFilter)}`;
this.setState({ msgs: data, nextpage: nextpage })
}).catch(ex => {
console.log(ex);
});
}
render() {
const { tag } = qs.parse(this.props.location.search || {});
const nodes = (
<React.Fragment>
{
tag && (
<p className="page">
<Link to={{ pathname: `/tag/${tag}` }}>
<span>← All posts with tag </span><b>{tag}</b>
</Link>
</p>
)
}
{
this.state.msgs.map(msg =>
<Message key={msg.mid} data={msg} visitor={this.props.visitor} />)
}
{
this.state.msgs.length >= 20 && (
<p className="page">
<Link to={{ pathname: this.props.location.pathname, search: this.state.nextpage }} rel="prev">Next →</Link>
</p>
)
}
</React.Fragment>
);
return this.state.msgs.length > 0 ? (
<div className="msgs" id="content">{nodes}</div>
) : <div className="msgs" id="content"><Spinner /><Spinner /><Spinner /><Spinner /></div>;
}
}
Feed.propTypes = {
msgs: PropTypes.array,
query: PropTypes.shape({
baseUrl: PropTypes.string.isRequired,
search: PropTypes.object,
pageParam: PropTypes.string.isRequired
})
};
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