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import { useState, useEffect } from 'react';
import Fuse from 'fuse.js';
import Navbar from '../components/navbar';
import Tags from '../components/tag'
import SearchOutlinedIcon from '@material-ui/icons/SearchOutlined';
function SearchBar(props: { searchFunction: () => void }) {
return <div className="searchBar">
<input
className="input"
id="searchInput"
placeholder="Search for posts..."
onChange={() => props.searchFunction()}
spellCheck="false"
autoComplete="off"/>
<button className="button" onClick={() => props.searchFunction()}><SearchOutlinedIcon/></button>
</div>
}
interface Post {
title: string
subtitle: string
author: string
date: string
urlname: string
tags: Array<string>
}
interface PostsInfo {
valid_tags: Array<string>
posts: Array<Post>
}
function Post(props: { post: Post }) {
return <a className="post" href={"/post/" + props.post.urlname}>
<b className="title">{props.post.title}</b>
{props.post.subtitle && <p className="subtitle">{props.post.subtitle}</p>}
<p className="authordate">Written by {props.post.author} on {new Date(props.post.date).toLocaleString("en-us", {
month: "long", day: "numeric"
})}</p>
<Tags tags={props.post.tags}/>
</a>;
}
function Posts(props: { posts: Array<Post> }) {
return <div className="searchResults">
{
props.posts.map(post => <Post post={post} key={Math.random().toString()}/>)
}
</div>;
}
function searchFilter(query: string, tags: Array<string>) {
var output = {
query: "",
tags: []
}
// remove string literals from tag matching
var queryWithoutLiterals = query.replace(/\".+?\"/g, "");
// find tags and remove them from the query
tags.forEach(tag => {
var index = queryWithoutLiterals.indexOf(tag);
if (index == -1) return;
// remove tag from query
queryWithoutLiterals =
queryWithoutLiterals.substr(0, index) +
queryWithoutLiterals.substr(index + tag.length);
output.tags.push(tag);
});
// add back in the string literals (janky just gets pasted on end)
output.query =
queryWithoutLiterals + " " +
(query.match(/\".+?\"/g)
?.map(r => r.substr(1, r.length - 2))
.join(" ") || "");
return output;
}
export default function SearchPage() {
var [posts, setPosts] = useState<PostsInfo>({ posts: [], valid_tags: [] });
var [query, setQuery] = useState("-");
var [visiblePosts, setVisiblePosts] = useState<Array<Post>>([]);
var fuse = new Fuse(posts.posts, {
keys: [
"title",
"subtitle",
"author",
"date",
"urlname",
"tags"
],
isCaseSensitive: false
})
useEffect(() => {(async () => {
var query = new URLSearchParams(window.location.search).get("q") || "";
if(query)
(document.getElementById("searchInput") as HTMLInputElement).value = query;
var posts = await fetch("/posts.json");
var postsJson: PostsInfo = await posts.json();
postsJson.posts = postsJson.posts.sort((a, b) => new Date(b.date).getTime() - new Date(a.date).getTime())
setPosts(postsJson);
setQuery(query);
})()}, []);
useEffect(() => {
var search = searchFilter(query, posts.valid_tags);
if(search.query.length == 0) {
var results = posts.posts;
} else {
var fuseSearch = fuse.search(search.query);
var results = fuseSearch.map(res => res.item);
}
results = results.filter(result => {
for(var i in search.tags) {
if (!result.tags.includes(search.tags[i]))
return false;
}
return true;
});
setVisiblePosts(results)
}, [query]);
return <div>
<div className="centeredPage">
<div className="titleWrapper">
<h1>Search for posts</h1>
</div>
<div className="navAreaWrapper">
<div className="sticky">
<Navbar page="search"/>
</div>
</div>
<div className="contentWrapper">
<SearchBar searchFunction={() => {
setTimeout(() => setQuery((document.getElementById("searchInput") as HTMLInputElement).value));
}}/>
<Posts posts={visiblePosts}/>
</div>
</div>
</div>
}
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