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path: root/web/source/settings/admin/emoji/new-emoji.js
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/*
	GoToSocial
	Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org

	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 <http://www.gnu.org/licenses/>.
*/

"use strict";

const Promise = require('bluebird');
const React = require("react");
const { matchSorter } = require("match-sorter");

const FakeToot = require("../../components/fake-toot");
const MutateButton = require("../../components/mutation-button");
const ComboBox = require("../../components/combo-box");

const {
	useTextInput,
	useFileInput,
	useComboBoxInput
} = require("../../components/form");

const query = require("../../lib/query");
const syncpipe = require('syncpipe');

module.exports = function NewEmojiForm({ emoji, emojiByCategory }) {
	const emojiCodes = React.useMemo(() => {
		return new Set(emoji.map((e) => e.shortcode));
	}, [emoji]);

	const [addEmoji, result] = query.useAddEmojiMutation();

	const [onFileChange, resetFile, { image, imageURL, imageInfo }] = useFileInput("image", {
		withPreview: true,
		maxSize: 50 * 1024
	});

	const [onShortcodeChange, resetShortcode, { shortcode, setShortcode, shortcodeRef }] = useTextInput("shortcode", {
		validator: function validateShortcode(code) {
			return emojiCodes.has(code)
				? "Shortcode already in use"
				: "";
		}
	});

	const [categoryState, resetCategory, { category }] = useComboBoxInput("category");

	// data used by the ComboBox element to select an emoji category
	const categoryItems = React.useMemo(() => {
		return syncpipe(emojiByCategory, [
			(_) => Object.keys(_),            // just emoji category names
			(_) => matchSorter(_, category),  // sorted by complex algorithm
			(_) => _.map((categoryName) => [  // map to input value, and selectable element with icon
				categoryName,
				<>
					<img src={emojiByCategory[categoryName][0].static_url} aria-hidden="true"></img>
					{categoryName}
				</>
			])
		]);
	}, [emojiByCategory, category]);

	React.useEffect(() => {
		if (shortcode.length == 0) {
			if (image != undefined) {
				let [name, _ext] = image.name.split(".");
				setShortcode(name);
			}
		}
		// we explicitly don't want to add 'shortcode' as a dependency here
		// because we only want this to update to the filename if the field is empty
		// at the moment the file is selected, not some time after when the field is emptied
		// eslint-disable-next-line react-hooks/exhaustive-deps
	}, [image]);

	function uploadEmoji(e) {
		if (e) {
			e.preventDefault();
		}

		Promise.try(() => {
			return addEmoji({
				image,
				shortcode,
				category
			});
		}).then(() => {
			resetFile();
			resetShortcode();
			resetCategory();
		});
	}

	let emojiOrShortcode = `:${shortcode}:`;

	if (imageURL != undefined) {
		emojiOrShortcode = <img
			className="emoji"
			src={imageURL}
			title={`:${shortcode}:`}
			alt={shortcode}
		/>;
	}

	return (
		<div>
			<h2>Add new custom emoji</h2>

			<FakeToot>
				Look at this new custom emoji {emojiOrShortcode} isn&apos;t it cool?
			</FakeToot>

			<form onSubmit={uploadEmoji} className="form-flex">
				<div className="form-field file">
					<label className="file-input button" htmlFor="image">
						Browse
					</label>
					{imageInfo}
					<input
						className="hidden"
						type="file"
						id="image"
						name="Image"
						accept="image/png,image/gif"
						onChange={onFileChange}
					/>
				</div>

				<div className="form-field text">
					<label htmlFor="shortcode">
						Shortcode, must be unique among the instance's local emoji
					</label>
					<input
						type="text"
						id="shortcode"
						name="Shortcode"
						ref={shortcodeRef}
						onChange={onShortcodeChange}
						value={shortcode}
					/>
				</div>

				<ComboBox
					state={categoryState}
					items={categoryItems}
					label="Category"
					placeHolder="e.g., reactions"
				/>

				<MutateButton text="Upload emoji" result={result} />
			</form>
		</div>
	);
};