import { ToolAnnotations } from "@modelcontextprotocol/sdk/types.js";
import { getCurrentAccountKeys, getNetwork } from "../shared/account.js";
import { Contract, getDefaultProvider, Wallet } from "@coti-io/coti-ethers";
import { ERC721_ABI } from "../constants/abis.js";
import { z } from "zod";
export const SET_PRIVATE_ERC721_APPROVAL_FOR_ALL: ToolAnnotations = {
title: "Set Private ERC721 Approval For All",
name: "set_private_erc721_approval_for_all",
description:
"Approve or revoke an operator to transfer all private ERC721 NFT tokens on the COTI blockchain. " +
"This allows the operator to transfer any NFT owned by the caller in this collection. " +
"Requires token contract address, operator address, and approval status as input. " +
"Returns the transaction hash upon successful approval setting.",
inputSchema: {
token_address: z.string().describe("ERC721 token contract address on COTI blockchain"),
operator_address: z.string().describe("Address to approve as operator, e.g., 0x0D7C5C1DA069fd7C1fAFBeb922482B2C7B15D273"),
approved: z.boolean().describe("Whether to approve (true) or revoke (false) the operator"),
gas_limit: z.string().optional().describe("Optional gas limit for the transaction"),
},
};
/**
* Checks if the provided arguments are valid for the set_private_erc721_approval_for_all tool.
* @param args The arguments to validate
* @returns true if the arguments are valid, false otherwise
*/
export function isSetPrivateERC721ApprovalForAllArgs(
args: unknown
): args is { token_address: string; operator_address: string; approved: boolean; gas_limit?: string } {
return (
typeof args === "object" &&
args !== null &&
"token_address" in args &&
typeof (args as { token_address: string }).token_address === "string" &&
"operator_address" in args &&
typeof (args as { operator_address: string }).operator_address === "string" &&
"approved" in args &&
typeof (args as { approved: boolean }).approved === "boolean" &&
(!("gas_limit" in args) || typeof (args as { gas_limit?: string }).gas_limit === "string" || (args as { gas_limit?: string }).gas_limit === undefined)
);
}
/**
* Handler for the setPrivateERC721ApprovalForAll tool
* @param args The arguments for the tool
* @returns The tool response
*/
export async function setPrivateERC721ApprovalForAllHandler(args: Record<string, unknown> | undefined): Promise<any> {
if (!isSetPrivateERC721ApprovalForAllArgs(args)) {
throw new Error("Invalid arguments for set_private_erc721_approval_for_all");
}
const { token_address, operator_address, approved, gas_limit } = args;
const results = await performSetPrivateERC721ApprovalForAll(token_address, operator_address, approved, gas_limit);
return {
content: [{ type: "text", text: results }],
isError: false,
};
}
/**
* Sets approval for an operator to transfer all private ERC721 NFT tokens
* @param token_address The address of the ERC721 token contract
* @param operator_address The address to approve as operator
* @param approved Whether to approve or revoke the operator
* @param gas_limit Optional gas limit for the transaction
* @returns A formatted string with the transaction information
*/
export async function performSetPrivateERC721ApprovalForAll(
token_address: string,
operator_address: string,
approved: boolean,
gas_limit?: string
) {
try {
const provider = getDefaultProvider(getNetwork());
const currentAccountKeys = getCurrentAccountKeys();
const wallet = new Wallet(currentAccountKeys.privateKey, provider);
wallet.setAesKey(currentAccountKeys.aesKey);
const tokenContract = new Contract(token_address, ERC721_ABI, wallet);
const name = await tokenContract.name();
const symbol = await tokenContract.symbol();
// Prepare transaction options
const options: { gasLimit?: number } = {};
if (gas_limit) {
options.gasLimit = parseInt(gas_limit);
}
// Execute the setApprovalForAll transaction
const tx = await tokenContract.setApprovalForAll(operator_address, approved, options);
const receipt = await tx.wait();
const action = approved ? "approved" : "revoked approval for";
return `Successfully ${action} ${operator_address} to manage all your NFTs from ${name} (${symbol}).\nTransaction hash: ${receipt.hash}`;
} catch (error) {
console.error('Error setting private ERC721 approval for all:', error);
throw new Error(`Failed to set private ERC721 approval for all: ${error instanceof Error ? error.message : String(error)}`);
}
}
