otterscan/src/address/Contract.tsx

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import React, { useState, useEffect } from "react";
import ContentFrame from "../ContentFrame";
import Highlight from "react-highlight";
import "highlight.js/styles/stackoverflow-light.css";
import hljs from "highlight.js";
import hljsDefineSolidity from "highlightjs-solidity";
hljsDefineSolidity(hljs);
hljs.initHighlightingOnLoad();
type ContractProps = {
checksummedAddress: string;
};
const Contract: React.FC<ContractProps> = ({ checksummedAddress }) => {
const [sources, setSources] = useState<
{ [fileName: string]: any } | undefined | null
>(undefined);
useEffect(() => {
if (!checksummedAddress) {
return;
}
const fetchMetadata = async () => {
try {
const result = await fetch(
`https://repo.sourcify.dev/contracts/full_match/1/${checksummedAddress}/metadata.json`
);
if (result.ok) {
const json = await result.json();
console.log(json);
setSources(json.sources);
setSelected(Object.keys(json.sources)[0]);
} else {
setSources(null);
}
} catch (err) {
console.error(err);
setSources(null);
}
};
fetchMetadata();
}, [checksummedAddress]);
const [selected, setSelected] = useState<string>();
return (
<ContentFrame tabs>
<div className="py-5">
{sources === null && (
<span>Couldn't find contract metadata in Sourcify repository.</span>
)}
{sources !== undefined && sources !== null && (
<>
{Object.entries(sources).map(([k]) => (
<button
className={`border-b-2 border-transparent rounded-t text-sm px-2 py-1 bg-gray-200 text-gray-500 ${
selected === k ? "border-orange-300 font-bold" : ""
}`}
>
{k}
</button>
))}
{selected && (
<Highlight className="w-full h-full border focus:outline-none font-code text-base">
{sources[selected].content}
</Highlight>
)}
</>
)}
</div>
</ContentFrame>
);
};
export default React.memo(Contract);