pharos-agent-kit/dist/utils/approveTokens.js

Connect AI Agents to Pharos protocols

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.approveToken = approveToken;
const viem_1 = require("viem");
async function approveToken(agent, tokenAddress, spender, amount) {
    try {
        // Check current allowance
        const allowance = await agent.publicClient.readContract({
            address: tokenAddress,
            abi: viem_1.erc20Abi,
            functionName: "allowance",
            args: [agent.wallet_address, spender]
        });
        // If allowance is already sufficient, skip approval
        if (allowance >= amount) {
            return;
        }
        // Prepare approval transaction
        await agent.walletClient.writeContract({
            address: tokenAddress,
            abi: viem_1.erc20Abi,
            functionName: "approve",
            args: [spender, amount]
        }); // Using 'as any' to bypass type-checking issues
    }
    catch (error) {
        throw new Error(`Failed to approve token: ${error instanceof Error ? error.message : String(error)}`);
    }
}
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