116 lines
2.6 KiB
TypeScript
116 lines
2.6 KiB
TypeScript
/*
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GoToSocial
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Copyright (C) GoToSocial Authors admin@gotosocial.org
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SPDX-License-Identifier: AGPL-3.0-or-later
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import React from "react";
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import { useState } from "react";
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import prettierBytes from "prettier-bytes";
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import type {
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CreateHookNames,
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HookOpts,
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FileFormInputHook,
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} from "./types";
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import { Error as ErrorC } from "../../components/error";
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const _default = undefined;
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export default function useFileInput(
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{ name }: CreateHookNames,
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{
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withPreview,
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maxSize,
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initialInfo = "no file selected"
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}: HookOpts<File>
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): FileFormInputHook {
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const [file, setFile] = useState<File>();
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const [imageURL, setImageURL] = useState<string>();
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const [info, setInfo] = useState<React.JSX.Element>();
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function reset() {
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if (imageURL) {
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URL.revokeObjectURL(imageURL);
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}
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setImageURL(undefined);
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setFile(undefined);
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setInfo(undefined);
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}
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function onChange(e: React.ChangeEvent<HTMLInputElement>) {
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const files = e.target.files;
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if (!files) {
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setInfo(undefined);
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return;
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}
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let file = files[0];
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setFile(file);
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if (imageURL) {
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URL.revokeObjectURL(imageURL);
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}
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if (withPreview) {
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setImageURL(URL.createObjectURL(file));
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}
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const sizePrettier = prettierBytes(file.size);
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if (maxSize && file.size > maxSize) {
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const maxSizePrettier = prettierBytes(maxSize);
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setInfo(
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<ErrorC
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error={new Error(`file size ${sizePrettier} is larger than max size ${maxSizePrettier}`)}
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reset={(reset)}
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/>
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);
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} else {
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setInfo(<>{file.name} ({sizePrettier})</>);
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}
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}
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const infoComponent = (
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<span className="form-info">
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{info
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? info
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: initialInfo
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}
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</span>
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);
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// Array / Object hybrid, for easier access in different contexts
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return Object.assign([
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onChange,
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reset,
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{
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[name]: file,
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[`${name}URL`]: imageURL,
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[`${name}Info`]: infoComponent,
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}
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], {
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onChange,
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reset,
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name,
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Name: "", // Will be set by inputHook function.
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value: file,
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previewValue: imageURL,
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hasChanged: () => file != undefined,
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infoComponent,
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_default,
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});
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}
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