3afc055b3b
* Asset create & list display * metadata WIP * ... inputs * Steps * min balance * with balance * Expand display
79 lines
2.5 KiB
TypeScript
79 lines
2.5 KiB
TypeScript
// Copyright 2017-2021 @polkadot/app-assets authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type BN from 'bn.js';
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import type { MetadataState } from './types';
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import React, { useEffect, useMemo, useState } from 'react';
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import { Input, InputNumber, Modal } from '@polkadot/react-components';
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import { useApi } from '@polkadot/react-hooks';
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import { useTranslation } from '../../translate';
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interface Props {
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assetId?: BN | null;
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className?: string;
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onChange: (info: MetadataState | null) => void;
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}
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function Metadata ({ assetId, className = '', onChange }: Props): React.ReactElement<Props> {
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const { t } = useTranslation();
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const { api } = useApi();
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const [assetDecimals, setAssetDecimals] = useState<BN | null>(null);
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const [assetName, setAssetName] = useState<string | null>(null);
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const [assetSymbol, setAssetSymbol] = useState<string | null>(null);
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const isValidDecimals = useMemo(
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() => !!assetDecimals && assetDecimals.lten(20),
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[assetDecimals]
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);
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const isValidName = useMemo(
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() => !!assetName && assetName.length >= 3 && assetName.length <= 32,
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[assetName]
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);
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const isValidSymbol = useMemo(
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() => !!assetSymbol && assetSymbol.length >= 3,
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[assetSymbol]
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);
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useEffect((): void => {
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onChange(
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assetId && assetName && assetSymbol && assetDecimals && isValidName && isValidSymbol && isValidDecimals
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? { metadataTx: api.tx.assets.setMetadata(assetId, assetName, assetSymbol, assetDecimals) }
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: null
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);
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}, [api, assetDecimals, assetId, assetName, assetSymbol, isValidName, isValidSymbol, isValidDecimals, onChange]);
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return (
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<Modal.Content className={className}>
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<Modal.Columns hint={t<string>('The descriptive name for this asset.')}>
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<Input
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autoFocus
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isError={!isValidName}
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label={t<string>('asset name')}
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onChange={setAssetName}
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/>
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</Modal.Columns>
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<Modal.Columns hint={t<string>('The symbol that will represent this asset.')}>
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<Input
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isError={!isValidSymbol}
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label={t<string>('asset symbol')}
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onChange={setAssetSymbol}
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/>
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</Modal.Columns>
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<Modal.Columns hint={t<string>('The number of decimals for this token. Max allowed via the UI is set to 20.')}>
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<InputNumber
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isError={!isValidDecimals}
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label={t<string>('asset decimals')}
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onChange={setAssetDecimals}
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/>
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</Modal.Columns>
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</Modal.Content>
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);
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}
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export default React.memo(Metadata);
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