// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import {ERC1155} from "openzeppelin-contracts/token/ERC1155/ERC1155.sol";
import {OperatorFilterer} from "../OperatorFilterer.sol";
import {Ownable} from "openzeppelin-contracts/access/Ownable.sol";
import {IERC2981, ERC2981} from "openzeppelin-contracts/token/common/ERC2981.sol";

/**
 * @title  ExampleERC1155
 * @notice This example contract is configured to use the DefaultOperatorFilterer, which automatically registers the
 *         token and subscribes it to OpenSea's curated filters.
 *         Adding the onlyAllowedOperator modifier to the transferFrom and both safeTransferFrom methods ensures that
 *         the msg.sender (operator) is allowed by the OperatorFilterRegistry.
 */
abstract contract ExampleERC1155 is ERC1155, OperatorFilterer, Ownable, ERC2981 {
    bool public operatorFilteringEnabled;

    constructor() ERC1155("") {
        _registerForOperatorFiltering();
        operatorFilteringEnabled = true;

        // Set royalty receiver to the contract creator,
        // at 5% (default denominator is 10000).
        _setDefaultRoyalty(msg.sender, 500);
    }

    function setApprovalForAll(address operator, bool approved)
        public
        override
        onlyAllowedOperatorApproval(operator)
    {
        super.setApprovalForAll(operator, approved);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        uint256 amount,
        bytes memory data
    ) public override onlyAllowedOperator(from) {
        super.safeTransferFrom(from, to, tokenId, amount, data);
    }

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) public override onlyAllowedOperator(from) {
        super.safeBatchTransferFrom(from, to, ids, amounts, data);
    }

    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC1155, ERC2981)
        returns (bool)
    {
        // Supports the following `interfaceId`s:
        // - IERC165: 0x01ffc9a7
        // - IERC1155: 0xd9b67a26
        // - IERC1155MetadataURI: 0x0e89341c
        // - IERC2981: 0x2a55205a
        return ERC1155.supportsInterface(interfaceId) || ERC2981.supportsInterface(interfaceId);
    }

    function setDefaultRoyalty(address receiver, uint96 feeNumerator) public onlyOwner {
        _setDefaultRoyalty(receiver, feeNumerator);
    }

    function setOperatorFilteringEnabled(bool value) public onlyOwner {
        operatorFilteringEnabled = value;
    }

    function _operatorFilteringEnabled() internal view override returns (bool) {
        return operatorFilteringEnabled;
    }

    function _isPriorityOperator(address operator) internal pure override returns (bool) {
        // OpenSea Seaport Conduit:
        // https://etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
        // https://goerli.etherscan.io/address/0x1E0049783F008A0085193E00003D00cd54003c71
        return operator == address(0x1E0049783F008A0085193E00003D00cd54003c71);
    }
}