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// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
import Button from '@mui/material/Button';
import {Alert} from '@mui/material';
import {useState, useRef} from 'react';
interface Props {
onUpload: (db: string) => void
}
export default function BtnUploadDB({onUpload}: Props) {
const [uploaded, setUploaded] = useState(false);
const [error, setError] = useState("");
const uploadInputRef = useRef<HTMLInputElement>(null);
if (uploaded) return (<Alert severity="success">DB Loaded</Alert>)
return (
<>
<input
ref={uploadInputRef}
type="file"
accept="text/*"
style={{display: "none"}}
onChange={async e => {
const tokenCsv = await readFile(e.target.files![0]);
try {
onUpload(tokenCsv);
setUploaded(true);
setError("");
}
catch (e: any) {
if (e instanceof Error) setError(e.message);
else setError("Error loading token database.");
}
}}
/>
<Button
onClick={() => uploadInputRef.current && uploadInputRef.current.click()}
variant="contained">
Upload token database
</Button>
{error && <Alert severity="error">{error}</Alert>}
</>
)
}
function readFile(file: Blob): Promise<string> {
return new Promise((resolve, reject) => {
if (!file) return resolve('');
const reader = new FileReader();
reader.onload = function (e) {
resolve(String(e.target!.result));
};
reader.readAsText(file);
});
}
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