migrate pinapelz.moe -> pinapelz.com

6 files changed, 685 insertions, 0 deletions

diff --git a/sticker.pinapelz.com/src/frequently-used.js b/sticker.pinapelz.com/src/frequently-used.js
new file mode 100644
index 0000000..a754e9a
--- /dev/null
+++ b/sticker.pinapelz.com/src/frequently-used.js
@@ -0,0 +1,34 @@
+// maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+const FREQUENTLY_USED = JSON.parse(window.localStorage.mauFrequentlyUsedStickerIDs || "{}")
+let FREQUENTLY_USED_SORTED = null
+
+export const add = id => {
+	const [count] = FREQUENTLY_USED[id] || [0]
+	FREQUENTLY_USED[id] = [count + 1, Date.now()]
+	window.localStorage.mauFrequentlyUsedStickerIDs = JSON.stringify(FREQUENTLY_USED)
+	FREQUENTLY_USED_SORTED = null
+}
+
+export const get = (limit = 16) => {
+	if (FREQUENTLY_USED_SORTED === null) {
+		FREQUENTLY_USED_SORTED = Object.entries(FREQUENTLY_USED)
+			.sort(([, [count1, date1]], [, [count2, date2]]) =>
+				count2 === count1 ? date2 - date1 : count2 - count1)
+			.map(([emoji]) => emoji)
+	}
+	return FREQUENTLY_USED_SORTED.slice(0, limit)
+}
diff --git a/sticker.pinapelz.com/src/giphy.js b/sticker.pinapelz.com/src/giphy.js
new file mode 100644
index 0000000..35172bb
--- /dev/null
+++ b/sticker.pinapelz.com/src/giphy.js
@@ -0,0 +1,107 @@
+import {Component, html} from "../lib/htm/preact.js";
+import * as widgetAPI from "./widget-api.js";
+import {SearchBox} from "./search-box.js";
+
+const GIPHY_SEARCH_DEBOUNCE = 1000
+let GIPHY_API_KEY = "HQku8974Uq5MZn3MZns46kXn2R4GDm75"
+let GIPHY_MXC_PREFIX = "mxc://giphy.mau.dev/"
+
+export function giphyIsEnabled() {
+	return GIPHY_API_KEY !== ""
+}
+
+export function setGiphyAPIKey(apiKey, mxcPrefix) {
+	GIPHY_API_KEY = apiKey
+	if (mxcPrefix) {
+		GIPHY_MXC_PREFIX = mxcPrefix
+	}
+}
+
+export class GiphySearchTab extends Component {
+	constructor(props) {
+		super(props)
+		this.state = {
+			searchTerm: "",
+			gifs: [],
+			loading: false,
+			error: null,
+		}
+		this.handleGifClick = this.handleGifClick.bind(this)
+		this.searchKeyUp = this.searchKeyUp.bind(this)
+		this.updateGifSearchQuery = this.updateGifSearchQuery.bind(this)
+		this.searchTimeout = null
+	}
+
+	async makeGifSearchRequest() {
+		try {
+			const resp = await fetch(`https://api.giphy.com/v1/gifs/search?q=${this.state.searchTerm}&api_key=${GIPHY_API_KEY}`)
+			// TODO handle error responses properly?
+			const data = await resp.json()
+			if (data.data.length === 0) {
+				this.setState({gifs: [], error: "No results"})
+			} else {
+				this.setState({gifs: data.data, error: null})
+			}
+		} catch (error) {
+			this.setState({error})
+		}
+	}
+
+	componentWillUnmount() {
+		clearTimeout(this.searchTimeout)
+	}
+
+	searchKeyUp(event) {
+		if (event.key === "Enter") {
+			clearTimeout(this.searchTimeout)
+			this.makeGifSearchRequest()
+		}
+	}
+
+	updateGifSearchQuery(event) {
+		this.setState({searchTerm: event.target.value})
+		clearTimeout(this.searchTimeout)
+		this.searchTimeout = setTimeout(() => this.makeGifSearchRequest(), GIPHY_SEARCH_DEBOUNCE)
+	}
+
+	handleGifClick(gif) {
+		widgetAPI.sendSticker({
+			"body": gif.title,
+			"info": {
+				"h": +gif.images.original.height,
+				"w": +gif.images.original.width,
+				"size": +gif.images.original.size,
+				"mimetype": "image/webp",
+			},
+			"msgtype": "m.image",
+			"url": GIPHY_MXC_PREFIX + gif.id,
+
+			"id": gif.id,
+			"filename": gif.id + ".webp",
+		})
+	}
+
+	render() {
+		// TODO display loading state?
+		return html`
+			<${SearchBox} onInput=${this.updateGifSearchQuery} onKeyUp=${this.searchKeyUp} value=${this.state.searchTerm} placeholder="Find GIFs"/>
+			<div class="pack-list">
+				<section class="stickerpack" id="pack-giphy">
+					<div class="error">
+						${this.state.error}
+					</div>
+					<div class="sticker-list">
+						${this.state.gifs.map((gif) => html`
+							<div class="sticker" onClick=${() => this.handleGifClick(gif)} data-gif-id=${gif.id}>
+								<img src=${gif.images.fixed_height.url} alt=${gif.title} class="visible" data=/>
+							</div>
+						`)}
+					</div>
+					<div class="footer powered-by-giphy">
+						<img src="./res/powered-by-giphy.png" alt="Powered by GIPHY"/>
+					</div>
+				</section>
+			</div>
+		`
+	}
+}
diff --git a/sticker.pinapelz.com/src/index.js b/sticker.pinapelz.com/src/index.js
new file mode 100644
index 0000000..9f545b8
--- /dev/null
+++ b/sticker.pinapelz.com/src/index.js
@@ -0,0 +1,400 @@
+// maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+import {html, render, Component} from "../lib/htm/preact.js"
+import {Spinner} from "./spinner.js"
+import {SearchBox} from "./search-box.js"
+import {giphyIsEnabled, GiphySearchTab, setGiphyAPIKey} from "./giphy.js"
+import * as widgetAPI from "./widget-api.js"
+import * as frequent from "./frequently-used.js"
+
+// The base URL for fetching packs. The app will first fetch ${PACK_BASE_URL}/index.json,
+// then ${PACK_BASE_URL}/${packFile} for each packFile in the packs object of the index.json file.
+const PACKS_BASE_URL = "packs"
+
+let INDEX = `${PACKS_BASE_URL}/index.json`
+const params = new URLSearchParams(document.location.search)
+if (params.has('config')) {
+	INDEX = params.get("config")
+}
+
+const makeThumbnailURL = mxc => `${PACKS_BASE_URL}/thumbnails/${mxc.split("/").slice(-1)[0]}`
+
+// We need to detect iOS webkit because it has a bug related to scrolling non-fixed divs
+// This is also used to fix scrolling to sections on Element iOS
+const isMobileSafari = navigator.userAgent.match(/(iPod|iPhone|iPad)/) && navigator.userAgent.match(/AppleWebKit/)
+
+const supportedThemes = ["light", "dark", "black"]
+
+const defaultState = {
+	packs: [],
+	filtering: {
+		searchTerm: "",
+		packs: [],
+	},
+}
+
+class App extends Component {
+	constructor(props) {
+		super(props)
+		this.defaultTheme = params.get("theme")
+		this.state = {
+			viewingGifs: false,
+			packs: defaultState.packs,
+			loading: true,
+			error: null,
+			stickersPerRow: parseInt(localStorage.mauStickersPerRow || "4"),
+			theme: localStorage.mauStickerThemeOverride || this.defaultTheme,
+			frequentlyUsed: {
+				id: "frequently-used",
+				title: "Frequently used",
+				stickerIDs: frequent.get(),
+				stickers: [],
+			},
+			filtering: defaultState.filtering,
+		}
+		if (!supportedThemes.includes(this.state.theme)) {
+			this.state.theme = "light"
+		}
+		if (!supportedThemes.includes(this.defaultTheme)) {
+			this.defaultTheme = "light"
+		}
+		this.stickersByID = new Map(JSON.parse(localStorage.mauFrequentlyUsedStickerCache || "[]"))
+		this.state.frequentlyUsed.stickers = this._getStickersByID(this.state.frequentlyUsed.stickerIDs)
+		this.imageObserver = null
+		this.packListRef = null
+		this.navRef = null
+		this.searchStickers = this.searchStickers.bind(this)
+		this.sendSticker = this.sendSticker.bind(this)
+		this.navScroll = this.navScroll.bind(this)
+		this.reloadPacks = this.reloadPacks.bind(this)
+		this.observeSectionIntersections = this.observeSectionIntersections.bind(this)
+		this.observeImageIntersections = this.observeImageIntersections.bind(this)
+	}
+
+	_getStickersByID(ids) {
+		return ids.map(id => this.stickersByID.get(id)).filter(sticker => !!sticker)
+	}
+
+	updateFrequentlyUsed() {
+		const stickerIDs = frequent.get()
+		const stickers = this._getStickersByID(stickerIDs)
+		this.setState({
+			frequentlyUsed: {
+				...this.state.frequentlyUsed,
+				stickerIDs,
+				stickers,
+			},
+		})
+		localStorage.mauFrequentlyUsedStickerCache = JSON.stringify(stickers.map(sticker => [sticker.id, sticker]))
+	}
+
+	searchStickers(e) {
+		const sanitizeString = s => s.toLowerCase().trim()
+		const searchTerm = sanitizeString(e.target.value)
+
+		const allPacks = [this.state.frequentlyUsed, ...this.state.packs]
+		const packsWithFilteredStickers = allPacks.map(pack => ({
+			...pack,
+			stickers: pack.stickers.filter(sticker =>
+				sanitizeString(sticker.body).includes(searchTerm) ||
+				sanitizeString(sticker.id).includes(searchTerm)
+			),
+		}))
+
+		this.setState({
+			filtering: {
+				...this.state.filtering,
+				searchTerm,
+				packs: packsWithFilteredStickers.filter(({stickers}) => !!stickers.length),
+			},
+		})
+	}
+
+	setStickersPerRow(val) {
+		localStorage.mauStickersPerRow = val
+		document.documentElement.style.setProperty("--stickers-per-row", localStorage.mauStickersPerRow)
+		this.setState({
+			stickersPerRow: val,
+		})
+		this.packListRef.scrollTop = this.packListRef.scrollHeight
+	}
+
+	setTheme(theme) {
+		if (theme === "default") {
+			delete localStorage.mauStickerThemeOverride
+			this.setState({theme: this.defaultTheme})
+		} else {
+			localStorage.mauStickerThemeOverride = theme
+			this.setState({theme: theme})
+		}
+	}
+
+	reloadPacks() {
+		this.imageObserver.disconnect()
+		this.sectionObserver.disconnect()
+		this.setState({
+			packs: defaultState.packs,
+			filtering: defaultState.filtering,
+		})
+		this._loadPacks(true)
+	}
+
+	_loadPacks(disableCache = false) {
+		const cache = disableCache ? "no-cache" : undefined
+		fetch(INDEX, {cache}).then(async indexRes => {
+			if (indexRes.status >= 400) {
+				this.setState({
+					loading: false,
+					error: indexRes.status !== 404 ? indexRes.statusText : null,
+				})
+				return
+			}
+			const indexData = await indexRes.json()
+			if (indexData.giphy_api_key !== undefined) {
+				setGiphyAPIKey(indexData.giphy_api_key, indexData.giphy_mxc_prefix)
+			}
+			// TODO only load pack metadata when scrolled into view?
+			for (const packFile of indexData.packs) {
+				let packRes
+				if (packFile.startsWith("https://") || packFile.startsWith("http://")) {
+					packRes = await fetch(packFile, {cache})
+				} else {
+					packRes = await fetch(`${PACKS_BASE_URL}/${packFile}`, {cache})
+				}
+				const packData = await packRes.json()
+				for (const sticker of packData.stickers) {
+					this.stickersByID.set(sticker.id, sticker)
+				}
+				this.setState({
+					packs: [...this.state.packs, packData],
+					loading: false,
+				})
+			}
+			this.updateFrequentlyUsed()
+		}, error => this.setState({loading: false, error}))
+	}
+
+	componentDidMount() {
+		document.documentElement.style.setProperty("--stickers-per-row", this.state.stickersPerRow.toString())
+		this._loadPacks()
+		this.imageObserver = new IntersectionObserver(this.observeImageIntersections, {
+			rootMargin: "100px",
+		})
+		this.sectionObserver = new IntersectionObserver(this.observeSectionIntersections)
+	}
+
+	observeImageIntersections(intersections) {
+		for (const entry of intersections) {
+			const img = entry.target.children.item(0)
+			if (entry.isIntersecting) {
+				img.setAttribute("src", img.getAttribute("data-src"))
+				img.classList.add("visible")
+			} else {
+				img.removeAttribute("src")
+				img.classList.remove("visible")
+			}
+		}
+	}
+
+	observeSectionIntersections(intersections) {
+		const navWidth = this.navRef.getBoundingClientRect().width
+		let minX = 0, maxX = navWidth
+		let minXElem = null
+		let maxXElem = null
+		for (const entry of intersections) {
+			const packID = entry.target.getAttribute("data-pack-id")
+			if (!packID) {
+				continue
+			}
+			const navElement = document.getElementById(`nav-${packID}`)
+			if (entry.isIntersecting) {
+				navElement.classList.add("visible")
+				const bb = navElement.getBoundingClientRect()
+				if (bb.x < minX) {
+					minX = bb.x
+					minXElem = navElement
+				} else if (bb.right > maxX) {
+					maxX = bb.right
+					maxXElem = navElement
+				}
+			} else {
+				navElement.classList.remove("visible")
+			}
+		}
+		if (minXElem !== null) {
+			minXElem.scrollIntoView({inline: "start"})
+		} else if (maxXElem !== null) {
+			maxXElem.scrollIntoView({inline: "end"})
+		}
+	}
+
+	componentDidUpdate() {
+		if (this.packListRef === null) {
+			return
+		}
+		for (const elem of this.packListRef.getElementsByClassName("sticker")) {
+			this.imageObserver.observe(elem)
+		}
+		for (const elem of this.packListRef.children) {
+			this.sectionObserver.observe(elem)
+		}
+	}
+
+	componentWillUnmount() {
+		this.imageObserver.disconnect()
+		this.sectionObserver.disconnect()
+	}
+
+	sendSticker(evt) {
+		const id = evt.currentTarget.getAttribute("data-sticker-id")
+		const sticker = this.stickersByID.get(id)
+		frequent.add(id)
+		this.updateFrequentlyUsed()
+		widgetAPI.sendSticker(sticker)
+	}
+
+	navScroll(evt) {
+		this.navRef.scrollLeft += evt.deltaY
+	}
+
+	render() {
+		const theme = `theme-${this.state.theme}`
+		const filterActive = !!this.state.filtering.searchTerm
+		const packs = filterActive
+			? this.state.filtering.packs
+			: [this.state.frequentlyUsed, ...this.state.packs]
+
+		if (this.state.loading) {
+			return html`
+				<main class="spinner ${theme}">
+					<${Spinner} size=${80} green/>
+				</main>
+			`
+		} else if (this.state.error) {
+			return html`
+				<main class="error ${theme}">
+					<h1>Failed to load packs</h1>
+					<p>${this.state.error}</p>
+				</main>
+			`
+		} else if (this.state.packs.length === 0) {
+			return html`
+				<main class="empty ${theme}"><h1>No packs found 😿</h1></main>
+			`
+		}
+
+		const onClickOverride = this.state.viewingGifs
+			? (evt, packID) => {
+				evt.preventDefault()
+				this.setState({viewingGifs: false}, () => {
+					scrollToSection(null, packID)
+				})
+			} : null
+		const switchToGiphy = () => this.setState({viewingGifs: true, filtering: defaultState.filtering})
+
+		return html`
+			<main class="has-content ${theme}">
+				<nav onWheel=${this.navScroll} ref=${elem => this.navRef = elem}>
+					${giphyIsEnabled() && html`
+						<${NavBarItem} pack=${{id: "giphy", title: "GIPHY"}} iconOverride="giphy" onClickOverride=${switchToGiphy} extraClass=${this.state.viewingGifs ? "visible" : ""}/>
+					`}
+					<${NavBarItem} pack=${this.state.frequentlyUsed} iconOverride="recent" onClickOverride=${onClickOverride}/>
+					${this.state.packs.map(pack => html`<${NavBarItem} id=${pack.id} pack=${pack} onClickOverride=${onClickOverride}/>`)}
+					<${NavBarItem} pack=${{id: "settings", title: "Settings"}} iconOverride="settings" onClickOverride=${onClickOverride}/>
+				</nav>
+
+				${this.state.viewingGifs ? html`
+					<${GiphySearchTab}/>
+				` : html`
+					<${SearchBox} onInput=${this.searchStickers} value=${this.state.filtering.searchTerm ?? ""}/>
+					<div class="pack-list ${isMobileSafari ? "ios-safari-hack" : ""}" ref=${(elem) => (this.packListRef = elem)}>
+						${filterActive && packs.length === 0
+							? html`<div class="search-empty"><h1>No stickers match your search</h1></div>`
+							: null}
+						${packs.map((pack) => html`<${Pack} id=${pack.id} pack=${pack} send=${this.sendSticker}/>`)}
+						<${Settings} app=${this}/>
+					</div>
+				`}
+			</main>`
+	}
+}
+
+const Settings = ({app}) => html`
+	<section class="stickerpack settings" id="pack-settings" data-pack-id="settings">
+		<h1>Settings</h1>
+		<div class="settings-list">
+			<button onClick=${app.reloadPacks}>Reload</button>
+			<div>
+				<label for="stickers-per-row">Stickers per row: ${app.state.stickersPerRow}</label>
+				<input type="range" min=2 max=10 id="stickers-per-row" id="stickers-per-row"
+					value=${app.state.stickersPerRow}
+					onInput=${evt => app.setStickersPerRow(evt.target.value)}/>
+			</div>
+			<div>
+				<label for="theme">Theme: </label>
+				<select name="theme" id="theme" onChange=${evt => app.setTheme(evt.target.value)}>
+					<option value="default">Default</option>
+					<option value="light">Light</option>
+					<option value="dark">Dark</option>
+					<option value="black">Black</option>
+				</select>
+			</div>
+		</div>
+	</section>
+`
+
+// By default we just let the browser handle scrolling to sections, but webviews on Element iOS
+// open the link in the browser instead of just scrolling there, so we need to scroll manually:
+const scrollToSection = (evt, id) => {
+	const pack = document.getElementById(`pack-${id}`)
+	if (pack) {
+		pack.scrollIntoView({block: "start", behavior: "instant"})
+	}
+	evt?.preventDefault()
+}
+
+const NavBarItem = ({pack, iconOverride = null, onClickOverride = null, extraClass = null}) => html`
+	<a href="#pack-${pack.id}" id="nav-${pack.id}" data-pack-id=${pack.id} title=${pack.title} class="${extraClass}"
+	   onClick=${onClickOverride ? (evt => onClickOverride(evt, pack.id)) : (isMobileSafari ? (evt => scrollToSection(evt, pack.id)) : undefined)}>
+		<div class="sticker">
+			${iconOverride ? html`
+				<span class="icon icon-${iconOverride}"/>
+			` : html`
+				<img src=${makeThumbnailURL(pack.stickers[0].url)}
+					alt=${pack.stickers[0].body} class="visible" />
+			`}
+		</div>
+	</a>
+`
+
+const Pack = ({pack, send}) => html`
+	<section class="stickerpack" id="pack-${pack.id}" data-pack-id=${pack.id}>
+		<h1>${pack.title}</h1>
+		<div class="sticker-list">
+			${pack.stickers.map(sticker => html`
+				<${Sticker} key=${sticker.id} content=${sticker} send=${send}/>
+			`)}
+		</div>
+	</section>
+`
+
+const Sticker = ({content, send}) => html`
+	<div class="sticker" onClick=${send} data-sticker-id=${content.id}>
+		<img data-src=${makeThumbnailURL(content.url)} alt=${content.body} title=${content.body}/>
+	</div>
+`
+
+render(html`<${App}/>`, document.body)
diff --git a/sticker.pinapelz.com/src/search-box.js b/sticker.pinapelz.com/src/search-box.js
new file mode 100644
index 0000000..b25769f
--- /dev/null
+++ b/sticker.pinapelz.com/src/search-box.js
@@ -0,0 +1,26 @@
+// maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+import {html} from "../lib/htm/preact.js"
+
+export const SearchBox = ({onInput, onKeyUp, value, placeholder = 'Find stickers'}) => {
+	const component = html`
+		<div class="search-box">
+			<input type="text" placeholder=${placeholder} value=${value} onInput=${onInput} onKeyUp=${onKeyUp}/>
+			<span class="icon icon-search"/>
+		</div>
+	`
+	return component
+}
diff --git a/sticker.pinapelz.com/src/spinner.js b/sticker.pinapelz.com/src/spinner.js
new file mode 100644
index 0000000..e89dd02
--- /dev/null
+++ b/sticker.pinapelz.com/src/spinner.js
@@ -0,0 +1,41 @@
+// maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+import { html } from "../lib/htm/preact.js"
+
+export const Spinner = ({ size = 40, noCenter = false, noMargin = false, green = false }) => {
+	let margin = 0
+	if (!isNaN(+size)) {
+		size = +size
+		margin = noMargin ? 0 : `${Math.round(size / 6)}px`
+		size = `${size}px`
+	}
+	const noInnerMargin = !noCenter || !margin
+	const comp = html`
+        <div style="width: ${size}; height: ${size}; margin: ${noInnerMargin ? 0 : margin} 0;"
+             class="sk-chase ${green && "green"}">
+            <div class="sk-chase-dot" />
+            <div class="sk-chase-dot" />
+            <div class="sk-chase-dot" />
+            <div class="sk-chase-dot" />
+            <div class="sk-chase-dot" />
+            <div class="sk-chase-dot" />
+        </div>
+    `
+	if (!noCenter) {
+		return html`<div style="margin: ${margin} 0;" class="sk-center-wrapper">${comp}</div>`
+	}
+	return comp
+}
diff --git a/sticker.pinapelz.com/src/widget-api.js b/sticker.pinapelz.com/src/widget-api.js
new file mode 100644
index 0000000..d9964a7
--- /dev/null
+++ b/sticker.pinapelz.com/src/widget-api.js
@@ -0,0 +1,77 @@
+// maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+let widgetId = null
+
+window.onmessage = event => {
+	if (!window.parent || !event.data) {
+		return
+	}
+
+	const request = event.data
+	if (!request.requestId || !request.widgetId || !request.action || request.api !== "toWidget") {
+		return
+	}
+
+	if (widgetId) {
+		if (widgetId !== request.widgetId) {
+			return
+		}
+	} else {
+		widgetId = request.widgetId
+	}
+
+	let response
+
+	if (request.action === "visibility") {
+		response = {}
+	} else if (request.action === "capabilities") {
+		response = { capabilities: ["m.sticker"] }
+	} else {
+		response = { error: { message: "Action not supported" } }
+	}
+
+	window.parent.postMessage({ ...request, response }, event.origin)
+}
+
+export function sendSticker(content) {
+	const data = {
+		content: { ...content },
+		// `name` is for Element Web (and also the spec)
+		// Element Android uses content -> body as the name
+		name: content.body,
+	}
+	// Custom field that stores the ID even for non-telegram stickers
+	delete data.content.id
+
+	// This is for Element iOS
+	const widgetData = {
+		...data,
+		description: content.body,
+		file: content.filename ?? `${content.id}.png`,
+	}
+	delete widgetData.content.filename
+	// Element iOS explodes if there are extra fields present
+	delete widgetData.content["net.maunium.telegram.sticker"]
+
+	window.parent.postMessage({
+		api: "fromWidget",
+		action: "m.sticker",
+		requestId: `sticker-${Date.now()}`,
+		widgetId,
+		data,
+		widgetData,
+	}, "*")
+}