// SPDX-License-Identifier: UNLICENSED

pragma solidity =0.8.18;

import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol";

library ERC20Helper {
    function name(IERC20 target) internal view returns (string memory) {
        return name(address(target));
    }

    function name(address target) internal view returns (string memory) {
        return IERC20Metadata(target).name();
    }

    function tryName(IERC20 target) internal view returns (string memory) {
        return tryName(address(target), "");
    }

    function tryName(address target) internal view returns (string memory) {
        return tryName(target, "");
    }

    function tryName(IERC20 target, string memory defaultName) internal view returns (string memory) {
        return tryName(address(target), defaultName);
    }

    function tryName(address target, string memory defaultName) internal view returns (string memory result) {
        if (!AddressUpgradeable.isContract(target)) return defaultName;
        try IERC20Metadata(target).name() returns (string memory result_) {
            result = result_;
        } catch (bytes memory) {
            result = defaultName;
        }
    }

    function symbol(IERC20 target) internal view returns (string memory) {
        return symbol(address(target));
    }

    function symbol(address target) internal view returns (string memory) {
        return IERC20Metadata(target).symbol();
    }

    function trySymbol(IERC20 target) internal view returns (string memory) {
        return trySymbol(address(target), "");
    }

    function trySymbol(address target) internal view returns (string memory) {
        return trySymbol(target, "");
    }

    function trySymbol(IERC20 target, string memory defaultSymbol) internal view returns (string memory) {
        return trySymbol(address(target), defaultSymbol);
    }

    function trySymbol(address target, string memory defaultSymbol) internal view returns (string memory result) {
        if (!AddressUpgradeable.isContract(target)) return defaultSymbol;
        try IERC20Metadata(target).symbol() returns (string memory result_) {
            result = result_;
        } catch (bytes memory) {
            result = defaultSymbol;
        }
    }

    function decimals(IERC20 target) internal view returns (uint8) {
        return decimals(address(target));
    }

    function decimals(address target) internal view returns (uint8) {
        return IERC20Metadata(target).decimals();
    }

    function tryDecimals(IERC20 target) internal view returns (uint8) {
        return tryDecimals(address(target), 18);
    }

    function tryDecimals(address target) internal view returns (uint8) {
        return tryDecimals(target, 18);
    }

    function tryDecimals(IERC20 target, uint8 defaultDecimals) internal view returns (uint8) {
        return tryDecimals(address(target), defaultDecimals);
    }

    function tryDecimals(address target, uint8 defaultDecimals) internal view returns (uint8 result) {
        if (!AddressUpgradeable.isContract(target)) return defaultDecimals;
        try IERC20Metadata(target).decimals() returns (uint8 result_) {
            result = result_;
        } catch (bytes memory) {
            result = defaultDecimals;
        }
    }
}