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import { useState, useEffect } from 'react'
import { Link, useLocation, useParams, Navigate, useSearchParams } from 'react-router-dom'
import dayjs from 'dayjs'
import utc from 'dayjs/plugin/utc'
dayjs.extend(utc)
import Message from './Message'
import Spinner from './Spinner'
import UserInfo from './UserInfo'
import { getMessages } from '../api'
import { useVisitor } from './VisitorContext'
import { Helmet } from 'react-helmet-async'
/**
* @typedef {object} Query
* @property {string} baseUrl
* @property {object=} search
* @property {string} pageParam
*/
/**
* @typedef {object} PageProps
* @property {string=} search
* @property {import('../api').Message[]=} msgs
*/
function RequireAuth({ children }) {
let location = useLocation()
let [visitor] = useVisitor()
if (!visitor.hash) {
// Redirect them to the /login page, but save the current location they were
// trying to go to when they were redirected. This allows us to send them
// along to that page after they login, which is a nicer user experience
// than dropping them off on the home page.
return <Navigate to={`https://juick.com/login?retpath=${window.location.href}`} state={{ from: location }} />
}
return children
}
/**
*
*/
export function Discover() {
const [search] = useSearchParams()
const query = {
baseUrl: '/api/messages',
search: search,
pageParam: search.search ? 'page' : 'before_mid'
}
return (
<>
<Helmet>
<title>Discover</title>
</Helmet>
<Feed query={query} />
</>
)
}
/**
*
*/
export function Discussions() {
const query = {
baseUrl: '/api/messages/discussions',
pageParam: 'to'
}
return (
<>
<Helmet>
<title>Discussions</title>
</Helmet>
<Feed query={query} />
</>
)
}
/**
*
*/
export function Blog() {
const { user } = useParams()
const [params] = useSearchParams()
const search = {
...params,
uname: user
}
const query = {
baseUrl: '/api/messages',
search: search,
pageParam: search.search ? 'page' : 'before_mid'
}
const blogTitle = `${user} blog`
const pageTitle = search.tag ? `${blogTitle}: #${search.tag}` : blogTitle
return (
<>
<Helmet>
<title>{pageTitle}</title>
</Helmet>
<div className="msg-cont">
<UserInfo uname={user} />
</div>
<Feed query={query} />
</>
)
}
/**
*
*/
export function Tag() {
const params = useParams()
const { tag } = params
const query = {
baseUrl: '/api/messages',
search: {
tag: tag
},
pageParam: 'before_mid'
}
return (
<>
<Helmet>
<title>#{tag}</title>
</Helmet>
<Feed query={query} />
</>
)
}
/**
*
*/
export function Home() {
const query = {
baseUrl: '/api/home',
pageParam: 'before_mid'
}
return (
<RequireAuth>
<Feed query={query} />
</RequireAuth>
)
}
/**
* @typedef {object} FeedState
* @property { import('../api').Message[]= } msgs
* @property { Query} query
*/
/**
* @param {FeedState} props
*/
function Feed({ query }) {
const location = useLocation()
const [visitor] = useVisitor()
const [state, setState] = useState({
msgs: [],
nextpage: null,
error: false,
tag: ''
})
const [loading, setLoading] = useState(true)
const [filter] = useSearchParams()
useEffect(() => {
setLoading(true)
let getPageParam = (pageParam, lastMessage, /** @type { URLSearchParams } */ filterParams) => {
const pageValue = pageParam === 'before_mid' ? lastMessage.mid : pageParam === 'page' ? (Number(filterParams.page) || 0) + 1 : dayjs.utc(lastMessage.updated).valueOf()
filterParams.append(pageParam, pageValue)
return `?${filterParams.toString()}`
}
let params = { ...Object.fromEntries(filter), ...query.search }
let url = query.baseUrl
getMessages(url, params)
.then(response => {
const { data } = response
const { pageParam } = query
const lastMessage = data.slice(-1)[0] || {}
const nextpage = getPageParam(pageParam, lastMessage, new URLSearchParams(params))
document.body.scrollTop = 0
document.documentElement.scrollTop = 0
setState((prevState) => {
return {
...prevState,
msgs: data,
nextpage: nextpage,
tag: filter['tag'] || ''
}
})
setLoading(false)
}).catch(() => {
setState((prevState) => {
return {
...prevState,
error: true
}
})
})
}, [query, filter])
return (state.msgs.length > 0 ? (
<div className="msgs">
{
state.tag && (
<p className="page">
<Link to={{ pathname: `/tag/${state.tag}` }}>
<span>← All posts with tag </span><b>{state.tag}</b>
</Link>
</p>
)
}
{
state.msgs.map(msg =>
<Message key={msg.mid} data={msg} visitor={visitor} />)
}
{
state.msgs.length >= 20 && (
<p className="page">
<Link to={{ pathname: location.pathname, search: state.nextpage }} rel="prev">Next →</Link>
</p>
)
}
</div>
) : state.error ? <div>error</div> : loading ? <div className="msgs"><Spinner /><Spinner /><Spinner /><Spinner /></div> : <div>No more messages</div>
)
}
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