94 lines
3 KiB
JavaScript
94 lines
3 KiB
JavaScript
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import {h, htm, render, useState, useEffect, createContext, useContext} from "./preact.js"
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const html = htm.bind(h)
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const classNames = classArr => classArr.filter(el => el).join(" ")
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const form = document.getElementById("bw-pr-search")
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const AcceptSuggestion = createContext(null)
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const hitsPromise = new Map()
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const hitsDone = new Set()
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function Suggestion(props) {
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const acceptSuggestion = useContext(AcceptSuggestion)
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return html`<li class="bw-ss__item"><button type="button" class="bw-ss__button" onClick=${() => acceptSuggestion(props)}>${props.title}</button></li>`
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}
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function fetchSuggestions(query, setSuggestions) {
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if (query === "") query = "\0"
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if (hitsPromise.has(query)) return hitsPromise.get(query)
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const url = new URL(`https://${BWData.wikiname}.fandom.com/api.php`)
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url.searchParams.set("action", "opensearch")
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url.searchParams.set("format", "json")
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url.searchParams.set("namespace", "0") // wiki namespace, 0 is default
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url.searchParams.set("origin", "*") // mediawiki api cors
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url.searchParams.set("search", query)
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const sendUrl = BWData.strict_proxy
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? "/proxy?" + new URLSearchParams({dest: url})
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: url
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const promise = fetch(sendUrl).then(res => res.json()).then(root => {
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hitsDone.add(query)
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return Array(root[1].length).fill().map((_, i) => ({
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title: root[1][i],
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url: root[3][i]
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}))
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})
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hitsPromise.set(query, promise)
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return promise
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}
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function SuggestionList(props) {
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return html`
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<div class="bw-ss__container">
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<ul class=${classNames(["bw-ss__list", props.focus && "bw-ss__list--focus", `bw-ss__list--${props.st}`])}>
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${props.hits.map(hit => html`<${Suggestion} ...${hit} />`)}
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</ul>
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</div>`
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}
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function ControlledInput() {
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const [query, setQuery] = useState("")
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const [focus, setFocus] = useState(false)
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const [st, setSt] = useState("ready")
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const [suggestions, setSuggestions] = useState([])
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useEffect(() => {
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if (st === "accepted") return
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setSt("loading")
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fetchSuggestions(query).then(s => {
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setSuggestions(s)
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if (hitsDone.size === hitsPromise.size) {
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setSt("ready")
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}
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})
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}, [query])
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function acceptSuggestion(suggestion) {
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setQuery(suggestion.title)
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setSt("accepted")
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const dest = new URL(suggestion.url).pathname.match("/wiki/.*")
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location = `/${BWData.wikiname}${dest}`
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}
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useEffect(() => {
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function listener(event) {
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if (event.type === "focusin") setFocus(true)
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else setFocus(false)
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}
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form.addEventListener("focusin", listener)
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form.addEventListener("focusout", listener)
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return () => {
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form.removeEventListener("focusin", listener)
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form.removeEventListener("focusout", listener)
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}
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})
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return html`
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<${AcceptSuggestion.Provider} value=${acceptSuggestion}>
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<label for="bw-search-input">Search </label>
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<input type="text" name="q" id="bw-search-input" autocomplete="off" onInput=${e => setQuery(e.target.value)} value=${query} class=${classNames(["bw-ss__input", `bw-ss__input--${st}`])} />
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<${SuggestionList} hits=${suggestions} focus=${focus} st=${st}/>
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</${AcceptSuggestion.Provider}`
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}
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render(html`<${ControlledInput} />`, form)
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