// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity ^0.8.17;

import "./ERC1155.sol";
import "./IMastersFedi.sol";
import "./Address.sol";
import "./IERC1155Metadata.sol";
import "./ERC1155Metadata.sol";
import "@openzeppelin/contracts/utils/Strings.sol"; 
import "@openzeppelin/contracts/utils/Base64.sol"; 
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";

contract CurioERC1155Wrapper is ERC1155, ERC1155Metadata_URI, ERC1155Metadata, Ownable, Pausable {
    using Address for address;

    mapping (uint256 => address) public contracts;
    mapping (uint256 => string) public urls;

    /**
        @notice Initialize an nft id's data
    */
    function create(uint256 _id, address _contract, string memory _url) internal {

        require(contracts[_id] == address(0), "id already exists");
        contracts[_id] = _contract;

        urls[_id] = _url;

        // mint 0 just to let explorers know it exists
        emit TransferSingle(msg.sender, address(0), msg.sender, _id, 0);
    }

    constructor() {
        create(1, 0x2f873FCc3F4B84E9A62AFf28E9a897ce1BC8814B, "https://shitposter.club");
        create(2, 0x13a9914Ad2e0be57eB2Abb3E159021Eab6D7a80E, "https://tuusin.misono-ya.info/users/hakui");
        create(3, 0xdeCAa5B6901dc465FBf90f9C0c70c96132aF51Db, "https://shitposter.club/users/augustus");
        create(4, 0xc1de7E95663FB3A0e8F8C6E6a64297d7AbcBF7f7, "https://mk.toast.cafe/@xjix");
        create(5, 0xB70F9A809693B8c6a4c331342B96F15252521dC7, "https://varishangout.net/users/nepfag");
        create(6, 0x3f2592136d90dE35615A409B4fe710B3764366F4, "https://shitposter.club/dokidoki@pl.smuglo.li");
        create(7, 0x5e7318f75b177a0F27A31CB20bB26bd0C049620c, "https://twitter.com/sonyasupposedly");
        create(8, 0x5539907D45a608828756765429f2B4e6311c295c, "https://shpposter.club/users/shpuld");
        create(9, 0x0a0e64067B1F7aDfbF876Dde4322633Ff7Df9702, "https://bbs.kawa-kun.com/users/tk");
    }

    /**
        @notice Returns URI of token metadata
        @param _id NFT ID
        @return URI data URI of metadata JSON
    */
    function uri(uint256 _id) external override view returns (string memory) {
        IMastersFedi curio = IMastersFedi(contracts[_id]);

        return string(abi.encodePacked("data:application/json;base64,", Base64.encode(abi.encodePacked(
            '{',
                '"name":"', curio.name(), '",',
                '"description":"', curio.description(), '",',
                '"image":"ipfs://', curio.ipfs_hash(), '",',
                '"external_url":"', urls[_id], '",',
                '"properties":{',
                    '"symbol":"', curio.symbol(), '",',
                    '"erc20_contract":"', Strings.toHexString(contracts[_id]), '"',
                '}',
            '}'
        ))));
    }

    /**
        @notice Change the external URL for a token
        @param _id NFT ID
        @param _url URL pointing to user or site
    */
    function setExternalUrl(uint256 _id, string memory _url) external onlyOwner {
        require(contracts[_id] != address(0), "id must exist");

        urls[_id] = _url;
    }

    /**
        @notice Query if a contract implements an interface
        @param _interfaceId  The interface identifier, as specified in ERC-165
        @return `true` if the contract implements `_interfaceId`
    */
    function supportsInterface(bytes4 _interfaceId) public pure override(ERC1155, ERC1155Metadata) returns (bool) {
        return ERC1155.supportsInterface(_interfaceId)
            || ERC1155Metadata.supportsInterface(_interfaceId);
    }

    /**
        @notice If NFT ID exists
        @dev Makes OpenSea happy
        @param _id NFT ID
        @return exists if NFT ID exists.
    */
    function exists(uint256 _id) external view returns(bool) {
        return contracts[_id] != address(0);
    }

    bool public destroyable = true;

    /**
        @notice Destroy the contract
        @dev Only if it hasn't been disabled 
    */
    function destroy() public onlyOwner whenPaused {
        require(destroyable, "destroy() has been disabled");
        selfdestruct(payable(msg.sender));
    }

    function disableDestroy() public onlyOwner {
        destroyable = false;
    }

    /**
        @notice Converts old-style NFT to new-style
        @dev For an NFT ID, queries and transfers tokens from the appropriate
            curio contract to itself, and mints and transfers corresponding new
            ERC-1155 tokens to caller
        @param _id NFT ID
        @param _quantity how many to wrap
     */
    function wrap(uint256 _id, uint256 _quantity) external whenNotPaused {
        address tokenContract = contracts[_id];
        require(tokenContract != address(0), "invalid id");
        IMastersFedi curio = IMastersFedi(tokenContract);

        // these are here for convenience because curio contract doesn't throw meaningful exceptions
        require(curio.balanceOf(msg.sender) >= _quantity, "insufficient curio balance");
        require(curio.allowance(msg.sender, address(this)) >= _quantity, "insufficient curio allowance");
        
        curio.transferFrom(msg.sender, address(this), _quantity);

        balances[_id][msg.sender] += _quantity;

        // mint
        emit TransferSingle(msg.sender, address(0), msg.sender, _id, _quantity);

        address _to = msg.sender;
        if (_to.isContract()) {
           _doSafeTransferAcceptanceCheck(msg.sender, msg.sender, msg.sender, _id, _quantity, '');
        }
    }

    /**
        @notice Batch version of wrap function
        @param _ids array of NFT IDs
        @param _quantities how many to wrap of each
     */
    function wrapBatch(uint256[] calldata _ids, uint256[] calldata _quantities) external whenNotPaused {
        require(_ids.length == _quantities.length, "ids and quantities must match");

        address _to = msg.sender;
        bool callerIsContract = _to.isContract();

        for (uint256 i=0; i < _ids.length; ++i) {
            uint256 _id = _ids[i];
            uint256 _quantity = _quantities[i];

            address tokenContract = contracts[_id];
            require(tokenContract != address(0), "invalid id");
            IMastersFedi curio = IMastersFedi(tokenContract);

            require(curio.balanceOf(msg.sender) >= _quantity, "insufficient curio balance");
            require(curio.allowance(msg.sender, address(this)) >= _quantity, "insufficient curio allowance");

            curio.transferFrom(msg.sender, address(this), _quantity);

            balances[_id][msg.sender] += _quantity;

            if (callerIsContract) {
                _doSafeTransferAcceptanceCheck(msg.sender, msg.sender, msg.sender, _id, _quantity, '');
            }
        }

        // mint
        emit TransferBatch(msg.sender, address(0), _to, _ids, _quantities);
    }

    /**
        @notice Unwrap new-style NFTs back to old-style
        @dev For an NFT ID, burns ERC-1155 quantity and transfers curio ERC-20
            tokens to caller
        @param _id NFT ID
        @param _quantity how many to unwrap
     */
    function unwrap(uint256 _id, uint256 _quantity) external whenNotPaused {
        address tokenContract = contracts[_id];
        require(tokenContract != address(0), "invalid id");
        IMastersFedi curio = IMastersFedi(tokenContract);

        require(balances[_id][msg.sender] >= _quantity, "insufficient balance");
        balances[_id][msg.sender] -=     _quantity;

        curio.transfer(msg.sender, _quantity);

        // burn
        emit TransferSingle(msg.sender, msg.sender, address(0), _id, _quantity);
    }

    /**
        @notice Batch version of unwrap
        @param _ids array of NFT IDs
        @param _quantities how many to unwrap of each
     */
    function unwrapBatch(uint256[] calldata _ids, uint256[] calldata _quantities) external whenNotPaused {
        require(_ids.length == _quantities.length, "ids and quantities must match");

        for (uint256 i=0; i < _ids.length; ++i) {
            uint256 _id = _ids[i];
            uint256 _quantity = _quantities[i];

            address tokenContract = contracts[_id];
            require(tokenContract != address(0), "invalid id");
            IMastersFedi curio = IMastersFedi(tokenContract);

            require(balances[_id][msg.sender] >= _quantity, "insufficient balance");
            balances[_id][msg.sender] -= _quantity;

            curio.transfer(msg.sender, _quantity);
        }

        // burn
        emit TransferBatch(msg.sender, msg.sender, address(0), _ids, _quantities);
    }
}