@bitte-ai/agent-sdk/dist/esm/evm/weth.js

Agent SDK for Bitte Protocol

import { encodeFunctionData, getAddress, parseAbi, parseEther, toHex, } from "viem";
import { CHAIN_INFO } from "./constants";
import { getChainById } from "./chain";
export function validateWethInput(params) {
    const chainIdStr = params.get("chainId");
    const amountStr = params.get("amount");
    // Ensure required fields
    if (!chainIdStr) {
        throw new Error("Missing required parameter: chainId");
    }
    if (!amountStr) {
        throw new Error("Missing required parameter: amount");
    }
    // Validate chainId
    const chainId = parseInt(chainIdStr);
    if (isNaN(chainId)) {
        throw new Error("Invalid chainId, must be a number");
    }
    // Validate amount
    const amount = parseFloat(amountStr);
    if (isNaN(amount) || amount <= 0) {
        throw new Error("Invalid amount, must be a positive float");
    }
    return {
        chainId,
        amount: parseEther(amount.toString()),
        nativeAsset: getNativeAsset(chainId),
    };
}
export const unwrapMetaTransaction = (chainId, amount) => {
    return {
        to: getNativeAsset(chainId).address,
        value: "0x0",
        data: encodeFunctionData({
            abi: parseAbi(["function withdraw(uint wad)"]),
            functionName: "withdraw",
            args: [amount],
        }),
    };
};
export const wrapMetaTransaction = (chainId, amount) => {
    return {
        to: getNativeAsset(chainId).address,
        value: toHex(amount),
        // methodId for weth.deposit
        data: "0xd0e30db0",
    };
};
export function getNativeAsset(chainId) {
    const wethAddress = CHAIN_INFO[chainId];
    if (!wethAddress) {
        throw new Error(`Couldn't find wrapped address for chainId=${chainId}`);
    }
    const chain = getChainById(chainId);
    return {
        address: getAddress(wethAddress),
        symbol: chain.nativeCurrency.symbol,
        scanUrl: `${chain.blockExplorers?.default.url}/address/${wethAddress}`,
        decimals: chain.nativeCurrency.decimals,
    };
}