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May 1, 2019 18:39
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import React, { useState, useEffect } from "react" | |
import FeedPost from "app/FeedPost" | |
import { | |
loadFeedPosts, | |
subscribeToNewFeedPosts | |
} from "app/utils" | |
// import FeedFinal from './Feed.final' | |
// export default FeedFinal | |
export default Feed | |
function Feed() { | |
const [newPosts, setNewPosts] = useState([]) | |
const [posts, setPosts] = useState(null) | |
const [time, setTime] = useState(Date.now()) | |
const [limit, setLimit] = useState(3) | |
useEffect(() => { | |
return subscribeToNewFeedPosts(time, newPosts => { | |
setNewPosts(newPosts) | |
}) | |
}, [time]) | |
useEffect(() => { | |
let isCurrent = true | |
loadFeedPosts(time, limit).then(posts => { | |
if (isCurrent) { | |
setPosts(posts) | |
} | |
}) | |
return () => { | |
isCurrent = false | |
} | |
}, [time, limit]) | |
const handleViewMore = () => { | |
setLimit(limit + 3) | |
} | |
const handleViewNewPosts = () => { | |
// setPosts([...newPosts, ...posts]) | |
// setNewPosts([]) | |
setLimit(limit + newPosts.length) | |
setTime(Date.now()) | |
} | |
return ( | |
<div className="Feed"> | |
{newPosts.length > 0 && ( | |
<div className="Feed_button_wrapper"> | |
<button | |
onClick={handleViewNewPosts} | |
className="Feed_new_posts_button icon_button" | |
> | |
View {newPosts.length} New Post(s) | |
</button> | |
</div> | |
)} | |
{posts ? ( | |
posts.map(post => ( | |
<FeedPost key={post.id} post={post} /> | |
)) | |
) : ( | |
<div>Loading Posts...</div> | |
)} | |
<div className="Feed_button_wrapper"> | |
<button | |
onClick={handleViewMore} | |
className="Feed_new_posts_button icon_button" | |
> | |
View More | |
</button> | |
</div> | |
</div> | |
) | |
} | |
// you can delete this | |
const fakePost = { | |
createdAt: Date.now() - 10000, | |
date: "2019-03-30", | |
message: "Went for a run", | |
minutes: 45, | |
uid: "0BrC0fB6r2Rb5MNxyQxu5EnYacf2" | |
} |
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