forked from mirrors/stickerpicker
235 lines
7.7 KiB
JavaScript
235 lines
7.7 KiB
JavaScript
// Copyright (c) 2020 Tulir Asokan
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import { html, render, Component } from "https://unpkg.com/htm/preact/index.mjs?module"
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import { Spinner } from "./spinner.js"
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import * as widgetAPI from "./widget-api.js"
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import * as frequent from "./frequently-used.js"
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// The base URL for fetching packs. The app will first fetch ${PACK_BASE_URL}/index.json,
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// then ${PACK_BASE_URL}/${packFile} for each packFile in the packs object of the index.json file.
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const PACKS_BASE_URL = "packs"
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// This is updated from packs/index.json
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let HOMESERVER_URL = "https://matrix-client.matrix.org"
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const makeThumbnailURL = mxc => `${HOMESERVER_URL}/_matrix/media/r0/thumbnail/${mxc.substr(6)}?height=128&width=128&method=scale`
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// We need to detect iOS webkit because it has a bug related to scrolling non-fixed divs
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// This is also used to fix scrolling to sections on Element iOS
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const isMobileSafari = navigator.userAgent.match(/(iPod|iPhone|iPad)/) && navigator.userAgent.match(/AppleWebKit/)
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class App extends Component {
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constructor(props) {
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super(props)
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this.state = {
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packs: [],
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loading: true,
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error: null,
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frequentlyUsed: {
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id: "frequently-used",
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title: "Frequently used",
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stickerIDs: frequent.get(),
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stickers: [],
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},
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}
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this.stickersByID = new Map(JSON.parse(localStorage.mauFrequentlyUsedStickerCache || "[]"))
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this.state.frequentlyUsed.stickers = this._getStickersByID(this.state.frequentlyUsed.stickerIDs)
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this.imageObserver = null
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this.packListRef = null
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this.navRef = null
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this.sendSticker = this.sendSticker.bind(this)
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this.navScroll = this.navScroll.bind(this)
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this.reloadPacks = this.reloadPacks.bind(this)
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}
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_getStickersByID(ids) {
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return ids.map(id => this.stickersByID.get(id)).filter(sticker => !!sticker)
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}
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updateFrequentlyUsed() {
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const stickerIDs = frequent.get()
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const stickers = this._getStickersByID(stickerIDs)
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this.setState({
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frequentlyUsed: {
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...this.state.frequentlyUsed,
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stickerIDs,
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stickers,
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},
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})
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localStorage.mauFrequentlyUsedStickerCache = JSON.stringify(stickers.map(sticker => [sticker.id, sticker]))
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}
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reloadPacks() {
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this.imageObserver.disconnect()
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this.sectionObserver.disconnect()
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this.setState({ packs: [] })
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this._loadPacks(true)
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}
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_loadPacks(disableCache = false) {
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const cache = disableCache ? "no-cache" : undefined
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fetch(`${PACKS_BASE_URL}/index.json`, { cache }).then(async indexRes => {
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if (indexRes.status >= 400) {
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this.setState({
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loading: false,
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error: indexRes.status !== 404 ? indexRes.statusText : null,
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})
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return
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}
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const indexData = await indexRes.json()
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HOMESERVER_URL = indexData.homeserver_url || HOMESERVER_URL
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// TODO only load pack metadata when scrolled into view?
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for (const packFile of indexData.packs) {
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const packRes = await fetch(`${PACKS_BASE_URL}/${packFile}`, { cache })
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const packData = await packRes.json()
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for (const sticker of packData.stickers) {
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this.stickersByID.set(sticker.id, sticker)
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}
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this.setState({
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packs: [...this.state.packs, packData],
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loading: false,
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})
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}
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this.updateFrequentlyUsed()
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}, error => this.setState({ loading: false, error }))
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}
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componentDidMount() {
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this._loadPacks()
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this.imageObserver = new IntersectionObserver(this.observeImageIntersections, {
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rootMargin: "100px",
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})
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this.sectionObserver = new IntersectionObserver(this.observeSectionIntersections)
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}
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observeImageIntersections(intersections) {
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for (const entry of intersections) {
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const img = entry.target.children.item(0)
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if (entry.isIntersecting) {
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img.setAttribute("src", img.getAttribute("data-src"))
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img.classList.add("visible")
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} else {
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img.removeAttribute("src")
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img.classList.remove("visible")
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}
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}
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}
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observeSectionIntersections(intersections) {
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for (const entry of intersections) {
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const packID = entry.target.getAttribute("data-pack-id")
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const navElement = document.getElementById(`nav-${packID}`)
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if (entry.isIntersecting) {
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navElement.classList.add("visible")
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} else {
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navElement.classList.remove("visible")
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}
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}
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}
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componentDidUpdate() {
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if (this.packListRef === null) {
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return
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}
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for (const elem of this.packListRef.getElementsByClassName("sticker")) {
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this.imageObserver.observe(elem)
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}
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for (const elem of this.packListRef.children) {
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this.sectionObserver.observe(elem)
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}
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}
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componentWillUnmount() {
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this.imageObserver.disconnect()
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this.sectionObserver.disconnect()
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}
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sendSticker(evt) {
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const id = evt.currentTarget.getAttribute("data-sticker-id")
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const sticker = this.stickersByID.get(id)
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frequent.add(id)
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this.updateFrequentlyUsed()
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widgetAPI.sendSticker(sticker)
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}
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navScroll(evt) {
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this.navRef.scrollLeft += evt.deltaY * 12
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}
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render() {
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if (this.state.loading) {
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return html`<main class="spinner"><${Spinner} size=${80} green /></main>`
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} else if (this.state.error) {
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return html`<main class="error">
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<h1>Failed to load packs</h1>
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<p>${this.state.error}</p>
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</main>`
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} else if (this.state.packs.length === 0) {
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return html`<main class="empty"><h1>No packs found 😿</h1></main>`
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}
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return html`<main class="has-content">
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<nav onWheel=${this.navScroll} ref=${elem => this.navRef = elem}>
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<${NavBarItem} pack=${this.state.frequentlyUsed} iconOverride="res/recent.svg" altOverride="🕓️" />
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${this.state.packs.map(pack => html`<${NavBarItem} id=${pack.id} pack=${pack}/>`)}
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<${NavBarItem} pack=${{ id: "settings", title: "Settings" }} iconOverride="res/settings.svg" altOverride="⚙️️" />
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</nav>
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<div class="pack-list ${isMobileSafari ? "ios-safari-hack" : ""}" ref=${elem => this.packListRef = elem}>
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<${Pack} pack=${this.state.frequentlyUsed} send=${this.sendSticker} />
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${this.state.packs.map(pack => html`<${Pack} id=${pack.id} pack=${pack} send=${this.sendSticker} />`)}
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<${Settings} app=${this}/>
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</div>
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</main>`
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}
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}
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const Settings = ({ app }) => html`
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<section class="stickerpack settings" id="pack-settings" data-pack-id="settings">
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<h1>Settings</h1>
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<div class="settings-list">
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<button onClick=${app.reloadPacks}>Reload</button>
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</div>
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</section>
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`
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// By default we just let the browser handle scrolling to sections, but webviews on Element iOS
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// open the link in the browser instead of just scrolling there, so we need to scroll manually:
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const scrollToSection = (evt, id) => {
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const pack = document.getElementById(`pack-${id}`)
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pack.scrollIntoView({ block: "start", behavior: "instant" })
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evt.preventDefault()
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}
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const NavBarItem = ({ pack, iconOverride = null, altOverride = null }) => html`
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<a href="#pack-${pack.id}" id="nav-${pack.id}" data-pack-id=${pack.id} title=${pack.title}
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onClick=${isMobileSafari ? (evt => scrollToSection(evt, pack.id)) : undefined}>
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<div class="sticker ${iconOverride ? "icon" : ""}">
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${iconOverride ? html`
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<img src=${iconOverride} alt=${altOverride} class="visible"/>
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` : html`
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<img src=${makeThumbnailURL(pack.stickers[0].url)}
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alt=${pack.stickers[0].body} class="visible" />
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`}
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</div>
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</a>
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`
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const Pack = ({ pack, send }) => html`
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<section class="stickerpack" id="pack-${pack.id}" data-pack-id=${pack.id}>
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<h1>${pack.title}</h1>
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<div class="sticker-list">
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${pack.stickers.map(sticker => html`
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<${Sticker} key=${sticker.id} content=${sticker} send=${send}/>
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`)}
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</div>
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</section>
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`
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const Sticker = ({ content, send }) => html`
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<div class="sticker" onClick=${send} data-sticker-id=${content.id}>
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<img data-src=${makeThumbnailURL(content.url)} alt=${content.body} />
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</div>
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`
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render(html`<${App} />`, document.body)
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