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/*
GoToSocial
Copyright (C) GoToSocial Authors admin@gotosocial.org
SPDX-License-Identifier: AGPL-3.0-or-later
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/>.
*/
import React from "react";
import { useState } from "react";
import prettierBytes from "prettier-bytes";
import type {
CreateHookNames,
HookOpts,
FileFormInputHook,
} from "./types";
const _default = undefined;
export default function useFileInput(
{ name }: CreateHookNames,
{
withPreview,
maxSize,
initialInfo = "no file selected"
}: HookOpts<File>
): FileFormInputHook {
const [file, setFile] = useState<File>();
const [imageURL, setImageURL] = useState<string>();
const [info, setInfo] = useState<React.JSX.Element>();
function onChange(e: React.ChangeEvent<HTMLInputElement>) {
const files = e.target.files;
if (!files) {
setInfo(undefined);
return;
}
let file = files[0];
setFile(file);
if (imageURL) {
URL.revokeObjectURL(imageURL);
}
if (withPreview) {
setImageURL(URL.createObjectURL(file));
}
let size = prettierBytes(file.size);
if (maxSize && file.size > maxSize) {
size = <span className="error-text">{size}</span>;
}
setInfo(
<>
{file.name} ({size})
</>
);
}
function reset() {
if (imageURL) {
URL.revokeObjectURL(imageURL);
}
setImageURL(undefined);
setFile(undefined);
setInfo(undefined);
}
const infoComponent = (
<span className="form-info">
{info
? info
: initialInfo
}
</span>
);
// Array / Object hybrid, for easier access in different contexts
return Object.assign([
onChange,
reset,
{
[name]: file,
[`${name}URL`]: imageURL,
[`${name}Info`]: infoComponent,
}
], {
onChange,
reset,
name,
Name: "", // Will be set by inputHook function.
value: file,
previewValue: imageURL,
hasChanged: () => file != undefined,
infoComponent,
_default,
});
}
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