packages/react-params/src/valueToText.tsx
// Copyright 2017-2024 @polkadot/react-params authors & contributors
// SPDX-License-Identifier: Apache-2.0
import type { Keys, ValidatorId } from '@polkadot/types/interfaces';
import type { Codec } from '@polkadot/types/types';
import React from 'react';
import { CopyButton } from '@polkadot/react-components';
import { Option, Raw } from '@polkadot/types';
import { isFunction, isNull, isUndefined, stringify, u8aToHex } from '@polkadot/util';
interface DivProps {
className?: string;
key?: string;
}
function div ({ className = '', key }: DivProps, ...values: React.ReactNode[]): { cName: string, key: string | undefined, values: React.ReactNode[] } {
const cName = `${className} ui--Param-text`;
return {
cName,
key,
values
};
}
function formatKeys (keys: [ValidatorId, Keys][]): string {
return JSON.stringify(
keys.map(([validator, keys]): [string, string] => [
validator.toString(), keys.toHex()
])
);
}
function toHuman (value: Codec | Codec[]): unknown {
// eslint-disable-next-line @typescript-eslint/unbound-method
return isFunction((value as Codec).toHuman)
? (value as Codec).toHuman()
: Array.isArray(value)
? value.map((v) => toHuman(v))
: value.toString();
}
export function toHumanJson (value: unknown): string {
return stringify(value, 2)
.replace(/,\n/g, '\n')
.replace(/"/g, '')
.replace(/\\/g, '')
.replace(/\],\[/g, '],\n[');
}
export default function valueToText (type: string, value: Codec | undefined | null): React.ReactNode {
if (isNull(value) || isUndefined(value)) {
const { cName, key, values } = div({}, '<unknown>');
return (
<div
className={cName}
key={key}
>
{values}
</div>
);
}
const renderedValue = (
// eslint-disable-next-line @typescript-eslint/unbound-method
['Bytes', 'Raw', 'Option<Keys>', 'Keys'].includes(type) && isFunction(value.toU8a)
? u8aToHex(value.toU8a(true))
// HACK Handle Keys as hex-only (this should go away once the node value is
// consistently swapped to `Bytes`)
: type === 'Vec<(ValidatorId,Keys)>'
? toHumanJson(formatKeys(value as unknown as [ValidatorId, Keys][]))
: value instanceof Raw
? value.isEmpty
? '<empty>'
: value.toString()
: (value instanceof Option) && value.isNone
? '<none>'
: toHumanJson(toHuman(value))
);
const { cName, key, values } = div({}, renderedValue);
return (
<div
className={cName}
key={key}
>
{values}
<CopyButton value={renderedValue} />
</div>
);
}