// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import {ERC20Burnable} from "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import {ERC20Permit} from "@openzeppelin/contracts/token/ERC20/extensions/ERC20Permit.sol";

/**
 * @title SatelliteToken
 * @notice Fixed-supply ERC-20 deployed by SatelliteLaunchPad directly from the
 *         creator's wallet. Built only from audited OpenZeppelin v5 components.
 *
 *  - The entire supply is minted once, to the deployer, in the constructor.
 *  - There is no owner, no mint function, no pause, no blacklist, no fee switch.
 *  - Holders can burn their own tokens (ERC20Burnable).
 *  - Gasless approvals are supported via EIP-2612 permit (ERC20Permit).
 *  - Project metadata (website / description) is stored on-chain, immutable.
 */
contract SatelliteToken is ERC20, ERC20Burnable, ERC20Permit {
    /// @notice Project website supplied at launch (may be empty).
    string public website;
    /// @notice Short project description supplied at launch (may be empty).
    string public description;
    /// @notice The platform that produced this deployment.
    string public constant LAUNCHPAD = "SatelliteLaunchPad";

    /**
     * @param name_        Token name, e.g. "SatelliteLaunchPad"
     * @param symbol_      Token symbol, e.g. "STPAD"
     * @param supply_      Whole-token supply (18 decimals are added here)
     * @param website_     Optional website URL
     * @param description_ Optional description
     */
    constructor(
        string memory name_,
        string memory symbol_,
        uint256 supply_,
        string memory website_,
        string memory description_
    ) ERC20(name_, symbol_) ERC20Permit(name_) {
        require(bytes(name_).length > 0, "SatelliteToken: empty name");
        require(bytes(symbol_).length > 0, "SatelliteToken: empty symbol");
        require(supply_ > 0, "SatelliteToken: zero supply");
        website = website_;
        description = description_;
        _mint(msg.sender, supply_ * 10 ** decimals());
    }
}