Initial commit with 🏗️ create-eth @ 2.0.4

This commit is contained in:
han
2026-01-21 11:18:02 +07:00
commit 2acc4d2eae
145 changed files with 27715 additions and 0 deletions

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type AddressCodeTabProps = {
bytecode: string;
assembly: string;
};
export const AddressCodeTab = ({ bytecode, assembly }: AddressCodeTabProps) => {
const formattedAssembly = Array.from(assembly.matchAll(/\w+( 0x[a-fA-F0-9]+)?/g))
.map(it => it[0])
.join("\n");
return (
<div className="flex flex-col gap-3 p-4">
Bytecode
<div className="mockup-code -indent-5 overflow-y-auto max-h-[500px]">
<pre className="px-5">
<code className="whitespace-pre-wrap overflow-auto break-words">{bytecode}</code>
</pre>
</div>
Opcodes
<div className="mockup-code -indent-5 overflow-y-auto max-h-[500px]">
<pre className="px-5">
<code>{formattedAssembly}</code>
</pre>
</div>
</div>
);
};

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"use client";
import { BackButton } from "./BackButton";
import { ContractTabs } from "./ContractTabs";
import { Address, Balance } from "@scaffold-ui/components";
import { Address as AddressType } from "viem";
import { hardhat } from "viem/chains";
import { useTargetNetwork } from "~~/hooks/scaffold-eth";
export const AddressComponent = ({
address,
contractData,
}: {
address: AddressType;
contractData: { bytecode: string; assembly: string } | null;
}) => {
const { targetNetwork } = useTargetNetwork();
return (
<div className="m-10 mb-20">
<div className="flex justify-start mb-5">
<BackButton />
</div>
<div className="col-span-5 grid grid-cols-1 lg:grid-cols-2 gap-8 lg:gap-10">
<div className="col-span-1 flex flex-col">
<div className="bg-base-100 border-base-300 border shadow-md shadow-secondary rounded-3xl px-6 lg:px-8 mb-6 space-y-1 py-4 overflow-x-auto">
<div className="flex">
<div className="flex flex-col gap-1">
<Address
address={address}
format="long"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${address}` : undefined
}
/>
<div className="flex gap-1 items-center">
<span className="font-bold text-sm">Balance:</span>
<Balance address={address} />
</div>
</div>
</div>
</div>
</div>
</div>
<ContractTabs address={address} contractData={contractData} />
</div>
);
};

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import { Address } from "viem";
import { useContractLogs } from "~~/hooks/scaffold-eth";
import { replacer } from "~~/utils/scaffold-eth/common";
export const AddressLogsTab = ({ address }: { address: Address }) => {
const contractLogs = useContractLogs(address);
return (
<div className="flex flex-col gap-3 p-4">
<div className="mockup-code overflow-auto max-h-[500px]">
<pre className="px-5 whitespace-pre-wrap break-words">
{contractLogs.map((log, i) => (
<div key={i}>
<strong>Log:</strong> {JSON.stringify(log, replacer, 2)}
</div>
))}
</pre>
</div>
</div>
);
};

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"use client";
import { useEffect, useState } from "react";
import { Address, createPublicClient, http, toHex } from "viem";
import { hardhat } from "viem/chains";
const publicClient = createPublicClient({
chain: hardhat,
transport: http(),
});
export const AddressStorageTab = ({ address }: { address: Address }) => {
const [storage, setStorage] = useState<string[]>([]);
useEffect(() => {
const fetchStorage = async () => {
try {
const storageData = [];
let idx = 0;
while (true) {
const storageAtPosition = await publicClient.getStorageAt({
address: address,
slot: toHex(idx),
});
if (storageAtPosition === "0x" + "0".repeat(64)) break;
if (storageAtPosition) {
storageData.push(storageAtPosition);
}
idx++;
}
setStorage(storageData);
} catch (error) {
console.error("Failed to fetch storage:", error);
}
};
fetchStorage();
}, [address]);
return (
<div className="flex flex-col gap-3 p-4">
{storage.length > 0 ? (
<div className="mockup-code overflow-auto max-h-[500px]">
<pre className="px-5 whitespace-pre-wrap break-words">
{storage.map((data, i) => (
<div key={i}>
<strong>Storage Slot {i}:</strong> {data}
</div>
))}
</pre>
</div>
) : (
<div className="text-lg">This contract does not have any variables.</div>
)}
</div>
);
};

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"use client";
import { useRouter } from "next/navigation";
export const BackButton = () => {
const router = useRouter();
return (
<button className="btn btn-sm btn-primary" onClick={() => router.back()}>
Back
</button>
);
};

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"use client";
import { useEffect, useState } from "react";
import { AddressCodeTab } from "./AddressCodeTab";
import { AddressLogsTab } from "./AddressLogsTab";
import { AddressStorageTab } from "./AddressStorageTab";
import { PaginationButton } from "./PaginationButton";
import { TransactionsTable } from "./TransactionsTable";
import { Address, createPublicClient, http } from "viem";
import { hardhat } from "viem/chains";
import { useFetchBlocks } from "~~/hooks/scaffold-eth";
type AddressCodeTabProps = {
bytecode: string;
assembly: string;
};
type PageProps = {
address: Address;
contractData: AddressCodeTabProps | null;
};
const publicClient = createPublicClient({
chain: hardhat,
transport: http(),
});
export const ContractTabs = ({ address, contractData }: PageProps) => {
const { blocks, transactionReceipts, currentPage, totalBlocks, setCurrentPage } = useFetchBlocks();
const [activeTab, setActiveTab] = useState("transactions");
const [isContract, setIsContract] = useState(false);
useEffect(() => {
const checkIsContract = async () => {
const contractCode = await publicClient.getBytecode({ address: address });
setIsContract(contractCode !== undefined && contractCode !== "0x");
};
checkIsContract();
}, [address]);
const filteredBlocks = blocks.filter(block =>
block.transactions.some(tx => {
if (typeof tx === "string") {
return false;
}
return tx.from.toLowerCase() === address.toLowerCase() || tx.to?.toLowerCase() === address.toLowerCase();
}),
);
return (
<>
{isContract && (
<div role="tablist" className="tabs tabs-lift">
<button
role="tab"
className={`tab ${activeTab === "transactions" ? "tab-active" : ""}`}
onClick={() => setActiveTab("transactions")}
>
Transactions
</button>
<button
role="tab"
className={`tab ${activeTab === "code" ? "tab-active" : ""}`}
onClick={() => setActiveTab("code")}
>
Code
</button>
<button
role="tab"
className={`tab ${activeTab === "storage" ? "tab-active" : ""}`}
onClick={() => setActiveTab("storage")}
>
Storage
</button>
<button
role="tab"
className={`tab ${activeTab === "logs" ? "tab-active" : ""}`}
onClick={() => setActiveTab("logs")}
>
Logs
</button>
</div>
)}
{activeTab === "transactions" && (
<div className="pt-4">
<TransactionsTable blocks={filteredBlocks} transactionReceipts={transactionReceipts} />
<PaginationButton
currentPage={currentPage}
totalItems={Number(totalBlocks)}
setCurrentPage={setCurrentPage}
/>
</div>
)}
{activeTab === "code" && contractData && (
<AddressCodeTab bytecode={contractData.bytecode} assembly={contractData.assembly} />
)}
{activeTab === "storage" && <AddressStorageTab address={address} />}
{activeTab === "logs" && <AddressLogsTab address={address} />}
</>
);
};

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import { ArrowLeftIcon, ArrowRightIcon } from "@heroicons/react/24/outline";
type PaginationButtonProps = {
currentPage: number;
totalItems: number;
setCurrentPage: (page: number) => void;
};
const ITEMS_PER_PAGE = 20;
export const PaginationButton = ({ currentPage, totalItems, setCurrentPage }: PaginationButtonProps) => {
const isPrevButtonDisabled = currentPage === 0;
const isNextButtonDisabled = currentPage + 1 >= Math.ceil(totalItems / ITEMS_PER_PAGE);
const prevButtonClass = isPrevButtonDisabled ? "btn-disabled cursor-default" : "btn-primary";
const nextButtonClass = isNextButtonDisabled ? "btn-disabled cursor-default" : "btn-primary";
if (isNextButtonDisabled && isPrevButtonDisabled) return null;
return (
<div className="mt-5 justify-end flex gap-3 mx-5">
<button
className={`btn btn-sm ${prevButtonClass}`}
disabled={isPrevButtonDisabled}
onClick={() => setCurrentPage(currentPage - 1)}
>
<ArrowLeftIcon className="h-4 w-4" />
</button>
<span className="self-center text-primary-content font-medium">Page {currentPage + 1}</span>
<button
className={`btn btn-sm ${nextButtonClass}`}
disabled={isNextButtonDisabled}
onClick={() => setCurrentPage(currentPage + 1)}
>
<ArrowRightIcon className="h-4 w-4" />
</button>
</div>
);
};

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"use client";
import { useState } from "react";
import { useRouter } from "next/navigation";
import { isAddress, isHex } from "viem";
import { hardhat } from "viem/chains";
import { usePublicClient } from "wagmi";
export const SearchBar = () => {
const [searchInput, setSearchInput] = useState("");
const router = useRouter();
const client = usePublicClient({ chainId: hardhat.id });
const handleSearch = async (event: React.FormEvent) => {
event.preventDefault();
if (isHex(searchInput)) {
try {
const tx = await client?.getTransaction({ hash: searchInput });
if (tx) {
router.push(`/blockexplorer/transaction/${searchInput}`);
return;
}
} catch (error) {
console.error("Failed to fetch transaction:", error);
}
}
if (isAddress(searchInput)) {
router.push(`/blockexplorer/address/${searchInput}`);
return;
}
};
return (
<form onSubmit={handleSearch} className="flex items-center justify-end mb-5 space-x-3 mx-5">
<input
className="border-primary bg-base-100 text-base-content placeholder:text-base-content/50 p-2 mr-2 w-full md:w-1/2 lg:w-1/3 rounded-md shadow-md focus:outline-hidden focus:ring-2 focus:ring-accent"
type="text"
value={searchInput}
placeholder="Search by hash or address"
onChange={e => setSearchInput(e.target.value)}
/>
<button className="btn btn-sm btn-primary" type="submit">
Search
</button>
</form>
);
};

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import Link from "next/link";
import { CheckCircleIcon, DocumentDuplicateIcon } from "@heroicons/react/24/outline";
import { useCopyToClipboard } from "~~/hooks/scaffold-eth/useCopyToClipboard";
export const TransactionHash = ({ hash }: { hash: string }) => {
const { copyToClipboard: copyAddressToClipboard, isCopiedToClipboard: isAddressCopiedToClipboard } =
useCopyToClipboard();
return (
<div className="flex items-center">
<Link href={`/blockexplorer/transaction/${hash}`}>
{hash?.substring(0, 6)}...{hash?.substring(hash.length - 4)}
</Link>
{isAddressCopiedToClipboard ? (
<CheckCircleIcon
className="ml-1.5 text-xl font-normal text-base-content h-5 w-5 cursor-pointer"
aria-hidden="true"
/>
) : (
<DocumentDuplicateIcon
className="ml-1.5 text-xl font-normal h-5 w-5 cursor-pointer"
aria-hidden="true"
onClick={() => copyAddressToClipboard(hash)}
/>
)}
</div>
);
};

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import { TransactionHash } from "./TransactionHash";
import { Address } from "@scaffold-ui/components";
import { formatEther } from "viem";
import { hardhat } from "viem/chains";
import { useTargetNetwork } from "~~/hooks/scaffold-eth/useTargetNetwork";
import { TransactionWithFunction } from "~~/utils/scaffold-eth";
import { TransactionsTableProps } from "~~/utils/scaffold-eth/";
export const TransactionsTable = ({ blocks, transactionReceipts }: TransactionsTableProps) => {
const { targetNetwork } = useTargetNetwork();
return (
<div className="flex justify-center px-4 md:px-0">
<div className="overflow-x-auto w-full shadow-2xl rounded-xl">
<table className="table text-xl bg-base-100 table-zebra w-full md:table-md table-sm">
<thead>
<tr className="rounded-xl text-sm text-base-content">
<th className="bg-primary">Transaction Hash</th>
<th className="bg-primary">Function Called</th>
<th className="bg-primary">Block Number</th>
<th className="bg-primary">Time Mined</th>
<th className="bg-primary">From</th>
<th className="bg-primary">To</th>
<th className="bg-primary text-end">Value ({targetNetwork.nativeCurrency.symbol})</th>
</tr>
</thead>
<tbody>
{blocks.map(block =>
(block.transactions as TransactionWithFunction[]).map(tx => {
const receipt = transactionReceipts[tx.hash];
const timeMined = new Date(Number(block.timestamp) * 1000).toLocaleString();
const functionCalled = tx.input.substring(0, 10);
return (
<tr key={tx.hash} className="hover text-sm">
<td className="w-1/12 md:py-4">
<TransactionHash hash={tx.hash} />
</td>
<td className="w-2/12 md:py-4">
{tx.functionName === "0x" ? "" : <span className="mr-1">{tx.functionName}</span>}
{functionCalled !== "0x" && (
<span className="badge badge-primary font-bold text-xs">{functionCalled}</span>
)}
</td>
<td className="w-1/12 md:py-4">{block.number?.toString()}</td>
<td className="w-2/12 md:py-4">{timeMined}</td>
<td className="w-2/12 md:py-4">
<Address
address={tx.from}
size="sm"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${tx.from}` : undefined
}
/>
</td>
<td className="w-2/12 md:py-4">
{!receipt?.contractAddress ? (
tx.to && (
<Address
address={tx.to}
size="sm"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${tx.to}` : undefined
}
/>
)
) : (
<div className="relative">
<Address
address={receipt.contractAddress}
size="sm"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id
? `/blockexplorer/address/${receipt.contractAddress}`
: undefined
}
/>
<small className="absolute top-4 left-4">(Contract Creation)</small>
</div>
)}
</td>
<td className="text-right md:py-4">
{formatEther(tx.value)} {targetNetwork.nativeCurrency.symbol}
</td>
</tr>
);
}),
)}
</tbody>
</table>
</div>
</div>
);
};

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export * from "./SearchBar";
export * from "./BackButton";
export * from "./AddressCodeTab";
export * from "./TransactionHash";
export * from "./ContractTabs";
export * from "./PaginationButton";
export * from "./TransactionsTable";

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import fs from "fs";
import path from "path";
import { Address } from "viem";
import { hardhat } from "viem/chains";
import { AddressComponent } from "~~/app/blockexplorer/_components/AddressComponent";
import deployedContracts from "~~/contracts/deployedContracts";
import { isZeroAddress } from "~~/utils/scaffold-eth/common";
import { GenericContractsDeclaration } from "~~/utils/scaffold-eth/contract";
type PageProps = {
params: Promise<{ address: Address }>;
};
async function fetchByteCodeAndAssembly(buildInfoDirectory: string, contractPath: string) {
const buildInfoFiles = fs.readdirSync(buildInfoDirectory);
let bytecode = "";
let assembly = "";
for (let i = 0; i < buildInfoFiles.length; i++) {
const filePath = path.join(buildInfoDirectory, buildInfoFiles[i]);
const buildInfo = JSON.parse(fs.readFileSync(filePath, "utf8"));
if (buildInfo.output.contracts[contractPath]) {
for (const contract in buildInfo.output.contracts[contractPath]) {
bytecode = buildInfo.output.contracts[contractPath][contract].evm.bytecode.object;
assembly = buildInfo.output.contracts[contractPath][contract].evm.bytecode.opcodes;
break;
}
}
if (bytecode && assembly) {
break;
}
}
return { bytecode, assembly };
}
const getContractData = async (address: Address) => {
const contracts = deployedContracts as GenericContractsDeclaration | null;
const chainId = hardhat.id;
if (!contracts || !contracts[chainId] || Object.keys(contracts[chainId]).length === 0) {
return null;
}
let contractPath = "";
const buildInfoDirectory = path.join(
__dirname,
"..",
"..",
"..",
"..",
"..",
"..",
"..",
"hardhat",
"artifacts",
"build-info",
);
if (!fs.existsSync(buildInfoDirectory)) {
throw new Error(`Directory ${buildInfoDirectory} not found.`);
}
const deployedContractsOnChain = contracts[chainId];
for (const [contractName, contractInfo] of Object.entries(deployedContractsOnChain)) {
if (contractInfo.address.toLowerCase() === address.toLowerCase()) {
contractPath = `contracts/${contractName}.sol`;
break;
}
}
if (!contractPath) {
// No contract found at this address
return null;
}
const { bytecode, assembly } = await fetchByteCodeAndAssembly(buildInfoDirectory, contractPath);
return { bytecode, assembly };
};
export function generateStaticParams() {
// An workaround to enable static exports in Next.js, generating single dummy page.
return [{ address: "0x0000000000000000000000000000000000000000" }];
}
const AddressPage = async (props: PageProps) => {
const params = await props.params;
const address = params?.address as Address;
if (isZeroAddress(address)) return null;
const contractData: { bytecode: string; assembly: string } | null = await getContractData(address);
return <AddressComponent address={address} contractData={contractData} />;
};
export default AddressPage;

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import { getMetadata } from "~~/utils/scaffold-eth/getMetadata";
export const metadata = getMetadata({
title: "Block Explorer",
description: "Block Explorer created with 🏗 Scaffold-ETH 2",
});
const BlockExplorerLayout = ({ children }: { children: React.ReactNode }) => {
return <>{children}</>;
};
export default BlockExplorerLayout;

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"use client";
import { useEffect, useState } from "react";
import { PaginationButton, SearchBar, TransactionsTable } from "./_components";
import type { NextPage } from "next";
import { hardhat } from "viem/chains";
import { useFetchBlocks } from "~~/hooks/scaffold-eth";
import { useTargetNetwork } from "~~/hooks/scaffold-eth/useTargetNetwork";
import { notification } from "~~/utils/scaffold-eth";
const BlockExplorer: NextPage = () => {
const { blocks, transactionReceipts, currentPage, totalBlocks, setCurrentPage, error } = useFetchBlocks();
const { targetNetwork } = useTargetNetwork();
const [isLocalNetwork, setIsLocalNetwork] = useState(true);
const [hasError, setHasError] = useState(false);
useEffect(() => {
if (targetNetwork.id !== hardhat.id) {
setIsLocalNetwork(false);
}
}, [targetNetwork.id]);
useEffect(() => {
if (targetNetwork.id === hardhat.id && error) {
setHasError(true);
}
}, [targetNetwork.id, error]);
useEffect(() => {
if (!isLocalNetwork) {
notification.error(
<>
<p className="font-bold mt-0 mb-1">
<code className="italic bg-base-300 text-base font-bold"> targetNetwork </code> is not localhost
</p>
<p className="m-0">
- You are on <code className="italic bg-base-300 text-base font-bold">{targetNetwork.name}</code> .This
block explorer is only for <code className="italic bg-base-300 text-base font-bold">localhost</code>.
</p>
<p className="mt-1 break-normal">
- You can use{" "}
<a className="text-accent" href={targetNetwork.blockExplorers?.default.url}>
{targetNetwork.blockExplorers?.default.name}
</a>{" "}
instead
</p>
</>,
);
}
}, [
isLocalNetwork,
targetNetwork.blockExplorers?.default.name,
targetNetwork.blockExplorers?.default.url,
targetNetwork.name,
]);
useEffect(() => {
if (hasError) {
notification.error(
<>
<p className="font-bold mt-0 mb-1">Cannot connect to local provider</p>
<p className="m-0">
- Did you forget to run <code className="italic bg-base-300 text-base font-bold">yarn chain</code> ?
</p>
<p className="mt-1 break-normal">
- Or you can change <code className="italic bg-base-300 text-base font-bold">targetNetwork</code> in{" "}
<code className="italic bg-base-300 text-base font-bold">scaffold.config.ts</code>
</p>
</>,
);
}
}, [hasError]);
return (
<div className="container mx-auto my-10">
<SearchBar />
<TransactionsTable blocks={blocks} transactionReceipts={transactionReceipts} />
<PaginationButton currentPage={currentPage} totalItems={Number(totalBlocks)} setCurrentPage={setCurrentPage} />
</div>
);
};
export default BlockExplorer;

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import TransactionComp from "../_components/TransactionComp";
import type { NextPage } from "next";
import { Hash } from "viem";
import { isZeroAddress } from "~~/utils/scaffold-eth/common";
type PageProps = {
params: Promise<{ txHash?: Hash }>;
};
export function generateStaticParams() {
// An workaround to enable static exports in Next.js, generating single dummy page.
return [{ txHash: "0x0000000000000000000000000000000000000000" }];
}
const TransactionPage: NextPage<PageProps> = async (props: PageProps) => {
const params = await props.params;
const txHash = params?.txHash as Hash;
if (isZeroAddress(txHash)) return null;
return <TransactionComp txHash={txHash} />;
};
export default TransactionPage;

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"use client";
import { useEffect, useState } from "react";
import { useRouter } from "next/navigation";
import { Address } from "@scaffold-ui/components";
import { Hash, Transaction, TransactionReceipt, formatEther, formatUnits } from "viem";
import { hardhat } from "viem/chains";
import { usePublicClient } from "wagmi";
import { useTargetNetwork } from "~~/hooks/scaffold-eth/useTargetNetwork";
import { decodeTransactionData, getFunctionDetails } from "~~/utils/scaffold-eth";
import { replacer } from "~~/utils/scaffold-eth/common";
const TransactionComp = ({ txHash }: { txHash: Hash }) => {
const client = usePublicClient({ chainId: hardhat.id });
const router = useRouter();
const [transaction, setTransaction] = useState<Transaction>();
const [receipt, setReceipt] = useState<TransactionReceipt>();
const [functionCalled, setFunctionCalled] = useState<string>();
const { targetNetwork } = useTargetNetwork();
useEffect(() => {
if (txHash && client) {
const fetchTransaction = async () => {
const tx = await client.getTransaction({ hash: txHash });
const receipt = await client.getTransactionReceipt({ hash: txHash });
const transactionWithDecodedData = decodeTransactionData(tx);
setTransaction(transactionWithDecodedData);
setReceipt(receipt);
const functionCalled = transactionWithDecodedData.input.substring(0, 10);
setFunctionCalled(functionCalled);
};
fetchTransaction();
}
}, [client, txHash]);
return (
<div className="container mx-auto mt-10 mb-20 px-10 md:px-0">
<button className="btn btn-sm btn-primary" onClick={() => router.back()}>
Back
</button>
{transaction ? (
<div className="overflow-x-auto">
<h2 className="text-3xl font-bold mb-4 text-center text-primary-content">Transaction Details</h2>{" "}
<table className="table rounded-lg bg-base-100 w-full shadow-lg md:table-lg table-md">
<tbody>
<tr>
<td>
<strong>Transaction Hash:</strong>
</td>
<td>{transaction.hash}</td>
</tr>
<tr>
<td>
<strong>Block Number:</strong>
</td>
<td>{Number(transaction.blockNumber)}</td>
</tr>
<tr>
<td>
<strong>From:</strong>
</td>
<td>
<Address
address={transaction.from}
format="long"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${transaction.from}` : undefined
}
/>
</td>
</tr>
<tr>
<td>
<strong>To:</strong>
</td>
<td>
{!receipt?.contractAddress ? (
transaction.to && (
<Address
address={transaction.to}
format="long"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${transaction.to}` : undefined
}
/>
)
) : (
<span>
Contract Creation:
<Address
address={receipt.contractAddress}
format="long"
onlyEnsOrAddress
blockExplorerAddressLink={
targetNetwork.id === hardhat.id
? `/blockexplorer/address/${receipt.contractAddress}`
: undefined
}
/>
</span>
)}
</td>
</tr>
<tr>
<td>
<strong>Value:</strong>
</td>
<td>
{formatEther(transaction.value)} {targetNetwork.nativeCurrency.symbol}
</td>
</tr>
<tr>
<td>
<strong>Function called:</strong>
</td>
<td>
<div className="w-full md:max-w-[600px] lg:max-w-[800px] overflow-x-auto whitespace-nowrap">
{functionCalled === "0x" ? (
"This transaction did not call any function."
) : (
<>
<span className="mr-2">{getFunctionDetails(transaction)}</span>
<span className="badge badge-primary font-bold">{functionCalled}</span>
</>
)}
</div>
</td>
</tr>
<tr>
<td>
<strong>Gas Price:</strong>
</td>
<td>{formatUnits(transaction.gasPrice || 0n, 9)} Gwei</td>
</tr>
<tr>
<td>
<strong>Data:</strong>
</td>
<td className="form-control">
<textarea
readOnly
value={transaction.input}
className="p-0 w-full textarea-primary bg-inherit h-[150px]"
/>
</td>
</tr>
<tr>
<td>
<strong>Logs:</strong>
</td>
<td>
<ul>
{receipt?.logs?.map((log, i) => (
<li key={i}>
<strong>Log {i} topics:</strong> {JSON.stringify(log.topics, replacer, 2)}
</li>
))}
</ul>
</td>
</tr>
</tbody>
</table>
</div>
) : (
<p className="text-2xl text-base-content">Loading...</p>
)}
</div>
);
};
export default TransactionComp;

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"use client";
// @refresh reset
import { Contract } from "@scaffold-ui/debug-contracts";
import { useDeployedContractInfo } from "~~/hooks/scaffold-eth";
import { useTargetNetwork } from "~~/hooks/scaffold-eth/useTargetNetwork";
import { ContractName } from "~~/utils/scaffold-eth/contract";
type ContractUIProps = {
contractName: ContractName;
className?: string;
};
/**
* UI component to interface with deployed contracts.
**/
export const ContractUI = ({ contractName }: ContractUIProps) => {
const { targetNetwork } = useTargetNetwork();
const { data: deployedContractData, isLoading: deployedContractLoading } = useDeployedContractInfo({ contractName });
if (deployedContractLoading) {
return (
<div className="mt-14">
<span className="loading loading-spinner loading-lg"></span>
</div>
);
}
if (!deployedContractData) {
return (
<p className="text-3xl mt-14">
No contract found by the name of {contractName} on chain {targetNetwork.name}!
</p>
);
}
return <Contract contractName={contractName as string} contract={deployedContractData} chainId={targetNetwork.id} />;
};

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"use client";
import { useEffect, useMemo } from "react";
import { ContractUI } from "./ContractUI";
import "@scaffold-ui/debug-contracts/styles.css";
import { useSessionStorage } from "usehooks-ts";
import { BarsArrowUpIcon } from "@heroicons/react/20/solid";
import { ContractName, GenericContract } from "~~/utils/scaffold-eth/contract";
import { useAllContracts } from "~~/utils/scaffold-eth/contractsData";
const selectedContractStorageKey = "scaffoldEth2.selectedContract";
export function DebugContracts() {
const contractsData = useAllContracts();
const contractNames = useMemo(
() =>
Object.keys(contractsData).sort((a, b) => {
return a.localeCompare(b, undefined, { numeric: true, sensitivity: "base" });
}) as ContractName[],
[contractsData],
);
const [selectedContract, setSelectedContract] = useSessionStorage<ContractName>(
selectedContractStorageKey,
contractNames[0],
{ initializeWithValue: false },
);
useEffect(() => {
if (!contractNames.includes(selectedContract)) {
setSelectedContract(contractNames[0]);
}
}, [contractNames, selectedContract, setSelectedContract]);
return (
<div className="flex flex-col gap-y-6 lg:gap-y-8 py-8 lg:py-12 justify-center items-center">
{contractNames.length === 0 ? (
<p className="text-3xl mt-14">No contracts found!</p>
) : (
<>
{contractNames.length > 1 && (
<div className="flex flex-row gap-2 w-full max-w-7xl pb-1 px-6 lg:px-10 flex-wrap">
{contractNames.map(contractName => (
<button
className={`btn btn-secondary btn-sm font-light hover:border-transparent ${
contractName === selectedContract
? "bg-base-300 hover:bg-base-300 no-animation"
: "bg-base-100 hover:bg-secondary"
}`}
key={contractName}
onClick={() => setSelectedContract(contractName)}
>
{contractName}
{(contractsData[contractName] as GenericContract)?.external && (
<span className="tooltip tooltip-top tooltip-accent" data-tip="External contract">
<BarsArrowUpIcon className="h-4 w-4 cursor-pointer" />
</span>
)}
</button>
))}
</div>
)}
{contractNames.map(
contractName =>
contractName === selectedContract && <ContractUI key={contractName} contractName={contractName} />,
)}
</>
)}
</div>
);
}

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import { DebugContracts } from "./_components/DebugContracts";
import type { NextPage } from "next";
import { getMetadata } from "~~/utils/scaffold-eth/getMetadata";
export const metadata = getMetadata({
title: "Debug Contracts",
description: "Debug your deployed 🏗 Scaffold-ETH 2 contracts in an easy way",
});
const Debug: NextPage = () => {
return (
<>
<DebugContracts />
<div className="text-center mt-8 bg-secondary p-10">
<h1 className="text-4xl my-0">Debug Contracts</h1>
<p className="text-neutral">
You can debug & interact with your deployed contracts here.
<br /> Check{" "}
<code className="italic bg-base-300 text-base font-bold [word-spacing:-0.5rem] px-1">
packages / nextjs / app / debug / page.tsx
</code>{" "}
</p>
</div>
</>
);
};
export default Debug;

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import { useEffect, useState } from "react";
import { useFetchNativeCurrencyPrice } from "@scaffold-ui/hooks";
import { useTargetNetwork } from "~~/hooks/scaffold-eth/useTargetNetwork";
type TAmountProps = {
amount?: number;
className?: string;
isLoading?: boolean;
showUsdPrice?: boolean;
disableToggle?: boolean;
};
/**
* Display (ETH & USD) balance of an ETH address.
*/
export const Amount = ({
isLoading,
showUsdPrice = false,
amount = 0,
className = "",
disableToggle = false,
}: TAmountProps) => {
const { targetNetwork: configuredNetwork } = useTargetNetwork();
const { price } = useFetchNativeCurrencyPrice();
const [isEthBalance, setEthBalance] = useState<boolean>(!showUsdPrice);
useEffect(() => {
setEthBalance(!showUsdPrice);
}, [showUsdPrice]);
if (isLoading) {
return (
<div className="animate-pulse flex space-x-4">
<div className="rounded-md bg-slate-300 h-6 w-6"></div>
<div className="flex items-center space-y-6">
<div className="h-2 w-28 bg-slate-300 rounded"></div>
</div>
</div>
);
}
const onToggleBalance = () => {
if (!disableToggle) {
setEthBalance(!isEthBalance);
}
};
return (
<button
className={`btn btn-sm px-0 btn-ghost flex flex-col font-normal items-center hover:bg-transparent ${className}`}
onClick={onToggleBalance}
>
<div className="w-full flex items-center justify-center">
{isEthBalance ? (
<>
<span>{amount?.toFixed(4)}</span>
<span className="font-bold ml-1">{configuredNetwork.nativeCurrency.symbol}</span>
</>
) : (
<>
<span className="font-bold mr-1">$</span>
<span>{(amount * price).toFixed(2)}</span>
</>
)}
</div>
</button>
);
};

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import React from "react";
import { Address } from "@scaffold-ui/components";
import { Address as AddressType } from "viem";
export type Roll = {
address: AddressType;
amount: number;
roll: string;
};
export type RollEventsProps = {
rolls: Roll[];
};
export const RollEvents = ({ rolls }: RollEventsProps) => {
return (
<div className="mx-10">
<div className="flex w-auto justify-center h-10">
<p className="flex justify-center text-lg font-bold">Roll Events</p>
</div>
<table className="mt-4 p-2 bg-base-100 table table-zebra shadow-lg w-full overflow-hidden">
<thead className="text-accent text-lg">
<tr>
<th className="bg-primary text-lg" colSpan={3}>
<span>Address</span>
</th>
<th className="bg-primary text-lg">
<span>Roll</span>
</th>
</tr>
</thead>
<tbody>
{rolls.map(({ address, roll }, i) => (
<tr key={i}>
<td colSpan={3} className="py-3.5">
<Address address={address} size="lg" />
</td>
<td className="col-span-1 text-lg">
<span> {roll} </span>
</td>
</tr>
))}
</tbody>
</table>
</div>
);
};

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import React, { useState } from "react";
import { Amount } from "./Amount";
import { Address } from "@scaffold-ui/components";
import { Address as AddressType, formatEther } from "viem";
export type Winner = {
address: AddressType;
amount: bigint;
};
export type WinnerEventsProps = {
winners: Winner[];
};
export const WinnerEvents = ({ winners }: WinnerEventsProps) => {
const [showUsdPrice, setShowUsdPrice] = useState(true);
return (
<div className="mx-10">
<div className="flex w-auto justify-center h-10">
<p className="flex justify-center text-lg font-bold">Winner Events</p>
</div>
<table className="mt-4 p-2 bg-base-100 table table-zebra shadow-lg w-full overflow-hidden">
<thead className="text-accent text-lg">
<tr>
<th className="bg-primary" colSpan={3}>
Address
</th>
<th
className="bg-primary"
colSpan={2}
onClick={() => {
setShowUsdPrice(!showUsdPrice);
}}
>
Won
</th>
</tr>
</thead>
<tbody>
{winners.map(({ address, amount }, i) => (
<tr key={i}>
<td colSpan={3}>
<Address address={address} size="lg" />
</td>
<td
colSpan={2}
onClick={() => {
setShowUsdPrice(!showUsdPrice);
}}
>
<Amount
showUsdPrice={showUsdPrice}
amount={Number(formatEther(amount))}
disableToggle
className="text-lg"
/>
</td>
</tr>
))}
</tbody>
</table>
</div>
);
};

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export * from "./Amount";
export * from "./RollEvents";
export * from "./WinnerEvents";

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"use client";
import { useCallback, useEffect, useRef, useState } from "react";
import { Address } from "@scaffold-ui/components";
import { useWatchBalance } from "@scaffold-ui/hooks";
import type { NextPage } from "next";
import { Address as AddressType, formatEther, parseEther } from "viem";
import { Amount, Roll, RollEvents, Winner, WinnerEvents } from "~~/app/dice/_components";
import {
useScaffoldContract,
useScaffoldEventHistory,
useScaffoldReadContract,
useScaffoldWriteContract,
} from "~~/hooks/scaffold-eth";
const ROLL_ETH_VALUE = "0.002";
const MAX_TABLE_ROWS = 10;
const DiceGame: NextPage = () => {
const [rolls, setRolls] = useState<Roll[]>([]);
const [winners, setWinners] = useState<Winner[]>([]);
const videoRef = useRef<HTMLVideoElement>(null);
const [rolled, setRolled] = useState(false);
const [isRolling, setIsRolling] = useState(false);
const { data: riggedRollContract } = useScaffoldContract({ contractName: "RiggedRoll" });
const { data: riggedRollBalance } = useWatchBalance({
address: riggedRollContract?.address,
});
const { data: prize } = useScaffoldReadContract({ contractName: "DiceGame", functionName: "prize" });
const { data: rollsHistoryData, isLoading: rollsHistoryLoading } = useScaffoldEventHistory({
contractName: "DiceGame",
eventName: "Roll",
watch: true,
});
useEffect(() => {
if (
!rollsHistoryLoading &&
Boolean(rollsHistoryData?.length) &&
(rollsHistoryData?.length as number) > rolls.length
) {
setIsRolling(false);
setRolls(
rollsHistoryData?.map(({ args }) => ({
address: args.player as AddressType,
amount: Number(args.amount),
roll: (args.roll as bigint).toString(16).toUpperCase(),
})) || [],
);
}
}, [rolls, rollsHistoryData, rollsHistoryLoading]);
const { data: winnerHistoryData, isLoading: winnerHistoryLoading } = useScaffoldEventHistory({
contractName: "DiceGame",
eventName: "Winner",
watch: true,
});
useEffect(() => {
if (
!winnerHistoryLoading &&
Boolean(winnerHistoryData?.length) &&
(winnerHistoryData?.length as number) > winners.length
) {
setIsRolling(false);
setWinners(
winnerHistoryData?.map(({ args }) => ({
address: args.winner as AddressType,
amount: args.amount as bigint,
})) || [],
);
}
}, [winnerHistoryData, winnerHistoryLoading, winners.length]);
const { writeContractAsync: writeDiceGameAsync, isError: rollTheDiceError } = useScaffoldWriteContract({
contractName: "DiceGame",
});
const { writeContractAsync: writeRiggedRollAsync, isError: riggedRollError } = useScaffoldWriteContract({
contractName: "RiggedRoll",
});
const immediateStopRolling = useCallback(() => {
setIsRolling(false);
setRolled(false);
}, []);
useEffect(() => {
if (rollTheDiceError || riggedRollError) {
immediateStopRolling();
}
}, [immediateStopRolling, riggedRollError, rollTheDiceError]);
useEffect(() => {
if (videoRef.current && !isRolling) {
// show last frame
videoRef.current.currentTime = 9999;
}
}, [isRolling]);
return (
<div className="py-10 px-10">
<div className="grid grid-cols-3 max-lg:grid-cols-1">
<div className="max-lg:row-start-2">
<RollEvents rolls={rolls.slice(0, MAX_TABLE_ROWS)} />
</div>
<div className="flex flex-col items-center pt-4 max-lg:row-start-1">
<div className="flex w-full justify-center">
<span className="text-xl"> Roll a 0, 1, 2, 3, 4 or 5 to win the prize! </span>
</div>
<div className="flex items-center mt-1">
<span className="text-lg mr-2">Prize:</span>
<Amount amount={prize ? Number(formatEther(prize)) : 0} showUsdPrice className="text-lg" />
</div>
<button
onClick={async () => {
if (!rolled) {
setRolled(true);
}
setIsRolling(true);
try {
await writeDiceGameAsync({ functionName: "rollTheDice", value: parseEther(ROLL_ETH_VALUE) });
} catch (err) {
console.error("Error calling rollTheDice function", err);
immediateStopRolling();
}
}}
disabled={isRolling}
className="mt-2 btn btn-secondary btn-xl normal-case font-xl text-lg"
>
Roll the dice!
</button>
<div className="mt-4 pt-2 flex flex-col items-center w-full justify-center border-t-4 border-primary">
<span className="text-2xl">Rigged Roll</span>
<div className="flex mt-2 items-center">
<span className="mr-2 text-lg">Address:</span>{" "}
<Address size="lg" address={riggedRollContract?.address} />{" "}
</div>
<div className="flex mt-1 items-center">
<span className="text-lg mr-2">Balance:</span>
<Amount amount={Number(riggedRollBalance?.formatted || 0)} showUsdPrice className="text-lg" />
</div>
</div>
{/* <button
onClick={async () => {
if (!rolled) {
setRolled(true);
}
setIsRolling(true);
try {
await writeRiggedRollAsync({ functionName: "riggedRoll" });
} catch (err) {
console.error("Error calling riggedRoll function", err);
immediateStopRolling();
}
}}
disabled={isRolling}
className="mt-2 btn btn-secondary btn-xl normal-case font-xl text-lg"
>
Rigged Roll!
</button> */}
<div className="flex mt-8">
{rolled ? (
isRolling ? (
<video key="rolling" width={300} height={300} loop src="/rolls/Spin.webm" autoPlay />
) : (
<video key="rolled" width={300} height={300} src={`/rolls/${rolls[0]?.roll || "0"}.webm`} autoPlay />
)
) : (
<video ref={videoRef} key="last" width={300} height={300} src={`/rolls/${rolls[0]?.roll || "0"}.webm`} />
)}
</div>
</div>
<div className="max-lg:row-start-3">
<WinnerEvents winners={winners.slice(0, MAX_TABLE_ROWS)} />
</div>
</div>
</div>
);
};
export default DiceGame;

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import { Space_Grotesk } from "next/font/google";
import "@rainbow-me/rainbowkit/styles.css";
import "@scaffold-ui/components/styles.css";
import { ScaffoldEthAppWithProviders } from "~~/components/ScaffoldEthAppWithProviders";
import { ThemeProvider } from "~~/components/ThemeProvider";
import "~~/styles/globals.css";
import { getMetadata } from "~~/utils/scaffold-eth/getMetadata";
const spaceGrotesk = Space_Grotesk({
subsets: ["latin"],
variable: "--font-space-grotesk",
});
export const metadata = getMetadata({
title: "Dice Game | Speedrun Ethereum",
description: "Built with 🏗 Scaffold-ETH 2",
});
const ScaffoldEthApp = ({ children }: { children: React.ReactNode }) => {
return (
<html suppressHydrationWarning className={`${spaceGrotesk.variable} font-space-grotesk`}>
<body>
<ThemeProvider enableSystem>
<ScaffoldEthAppWithProviders>{children}</ScaffoldEthAppWithProviders>
</ThemeProvider>
</body>
</html>
);
};
export default ScaffoldEthApp;

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import Link from "next/link";
export default function NotFound() {
return (
<div className="flex items-center h-full flex-1 justify-center bg-base-200">
<div className="text-center">
<h1 className="text-6xl font-bold m-0 mb-1">404</h1>
<h2 className="text-2xl font-semibold m-0">Page Not Found</h2>
<p className="text-base-content/70 m-0 mb-4">The page you&apos;re looking for doesn&apos;t exist.</p>
<Link href="/" className="btn btn-primary">
Go Home
</Link>
</div>
</div>
);
}

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"use client";
import Image from "next/image";
import Link from "next/link";
import { Address } from "@scaffold-ui/components";
import type { NextPage } from "next";
import { hardhat } from "viem/chains";
import { useAccount } from "wagmi";
import { BugAntIcon, MagnifyingGlassIcon } from "@heroicons/react/24/outline";
import { useTargetNetwork } from "~~/hooks/scaffold-eth";
const Home: NextPage = () => {
const { address: connectedAddress } = useAccount();
const { targetNetwork } = useTargetNetwork();
return (
<>
<div className="flex items-center flex-col grow pt-10">
<div className="px-5">
<h1 className="text-center">
<span className="block text-2xl mb-2">Welcome to</span>
<span className="block text-4xl font-bold">Scaffold-ETH 2</span>
<span className="block text-xl font-bold">(Speedrun Ethereum Challenge: Dice game extension)</span>
</h1>
<div className="flex justify-center items-center space-x-2 flex-col">
<p className="my-2 font-medium">Connected Address:</p>
<Address
address={connectedAddress}
chain={targetNetwork}
blockExplorerAddressLink={
targetNetwork.id === hardhat.id ? `/blockexplorer/address/${connectedAddress}` : undefined
}
/>
</div>
<div className="flex items-center flex-col flex-grow pt-10">
<div className="px-5">
<h1 className="text-center mb-6">
<span className="block text-2xl mb-2">Speedrun Ethereum</span>
<span className="block text-4xl font-bold">Challenge: 🎲 Dice Game</span>
</h1>
<div className="flex flex-col items-center justify-center">
<Image
src="/hero.png"
width="727"
height="231"
alt="challenge banner"
className="rounded-xl border-4 border-primary"
/>
<div className="max-w-3xl">
<p className="text-lg mt-10">
🎰 Randomness is tricky on a public deterministic blockchain. The block hash is an easy to use, but
very weak form of randomness. This challenge will give you an example of a contract using the block
hash to create random numbers. This randomness is exploitable. Other, stronger forms of randomness
include commit/reveal schemes, oracles, or VRF from Chainlink.
</p>
<p className="text-lg mt-2">
🧤 Every time a player rolls the dice, they are required to send .002 Eth. 40 percent of this value
is added to the current prize amount while the other 60 percent stays in the contract to fund future
prizes. Once a prize is won, the new prize amount is set to 10% of the total balance of the DiceGame
contract.
</p>
<p className="text-lg mt-2">
🧨 Your job is to attack the Dice Game contract! You will create a new contract that will predict
the randomness ahead of time and only roll the dice when youre guaranteed to be a winner!
</p>
<p className="text-lg mt-2">
💬 Meet other builders working on this challenge and get help in the{" "}
<a href="https://t.me/+3StA0aBSArFjNjUx" target="_blank" rel="noreferrer" className="underline">
Telegram Group
</a>
</p>
<p className="text-center text-lg">
<a href="https://speedrunethereum.com/" target="_blank" rel="noreferrer" className="underline">
SpeedrunEthereum.com
</a>
!
</p>
</div>
</div>
</div>
</div>
</div>
<div className="grow bg-base-300 w-full mt-16 px-8 py-12">
<div className="flex justify-center items-center gap-12 flex-col md:flex-row">
<div className="flex flex-col bg-base-100 px-10 py-10 text-center items-center max-w-xs rounded-3xl">
<BugAntIcon className="h-8 w-8 fill-secondary" />
<p>
Tinker with your smart contract using the{" "}
<Link href="/debug" passHref className="link">
Debug Contracts
</Link>{" "}
tab.
</p>
</div>
<div className="flex flex-col bg-base-100 px-10 py-10 text-center items-center max-w-xs rounded-3xl">
<MagnifyingGlassIcon className="h-8 w-8 fill-secondary" />
<p>
Explore your local transactions with the{" "}
<Link href="/blockexplorer" passHref className="link">
Block Explorer
</Link>{" "}
tab.
</p>
</div>
</div>
</div>
</div>
</>
);
};
export default Home;