// File: contracts/Nanohub.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8;

import "./Ownable.sol";

interface INFT {
  function mintFRAME(address to, uint tokenId) external;
  function exist(uint tokenId) external view returns (bool);
  function ownerOf(uint tokenId) external view returns (address);
  function transferFrom(address from, address to, uint id) external;
  function balanceOf(address owner) external view returns (uint256);
  function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
}

/// @author jolan.eth
contract NANOHUB is Ownable {
  INFT _0N1;
  INFT _FRAME;
  INFT _COMICS;

  constructor(address ONI, address FRAME, address COMICS) {
    _0N1 = INFT(ONI);
    _FRAME = INFT(FRAME);
    _COMICS = INFT(COMICS);
  }

  function mintFRAME(uint tokenId)
  public {
    require(!_FRAME.exist(tokenId), "error FRAME.exist");
    require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");
    _FRAME.mintFRAME(msg.sender, tokenId);
  }

  function batchMintFRAME()
  public {
    uint i = 0;
    uint balance = _0N1.balanceOf(msg.sender);
    while (i < balance) {
      uint tokenId = _0N1.tokenOfOwnerByIndex(msg.sender, i);
      if (!_FRAME.exist(tokenId)) {
        require(!_FRAME.exist(tokenId), "error FRAME.exist");
        require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");
        _FRAME.mintFRAME(msg.sender, tokenId);
      }
      i++;
    }
  }

  function recallFRAME(uint tokenId)
  public {
    require(_FRAME.exist(tokenId), "error FRAME.exist");
    require(msg.sender != _FRAME.ownerOf(tokenId), "error FRAME.owner");
    require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");

    address frameOwner = _FRAME.ownerOf(tokenId);
    _FRAME.transferFrom(frameOwner, msg.sender, tokenId);
  }

  function batchRecallFRAME()
  public {
    uint i = 0;
    uint balance = _0N1.balanceOf(msg.sender);
    while (i < balance) {
      uint tokenId = _0N1.tokenOfOwnerByIndex(msg.sender, i);
      require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");
      require(_FRAME.exist(tokenId), "error FRAME.exist");
      if (msg.sender != _FRAME.ownerOf(tokenId)) {
        address frameOwner = _FRAME.ownerOf(tokenId);
        _FRAME.transferFrom(frameOwner, msg.sender, tokenId);
      }
      i++;
    }
  }

  function transferFRAME(address to, uint tokenId)
  public {
    require(msg.sender == _FRAME.ownerOf(tokenId), "error FRAME.owner");
    require(_FRAME.exist(tokenId), "error FRAME.exist");

    _FRAME.transferFrom(msg.sender, to, tokenId);
  }

  function recallCOMICS(uint tokenId)
  public {
    require(_COMICS.exist(tokenId), "error COMICS.exist");
    require(msg.sender != _COMICS.ownerOf(tokenId), "error COMICS.owner");
    require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");

    address comicsOwner = _COMICS.ownerOf(tokenId);
    _COMICS.transferFrom(comicsOwner, msg.sender, tokenId);
  }

  function batchRecallCOMICS()
  public {
    uint i = 0;
    uint balance = _0N1.balanceOf(msg.sender);
    while (i < balance) {
      uint tokenId = _0N1.tokenOfOwnerByIndex(msg.sender, i);
      require(msg.sender == _0N1.ownerOf(tokenId), "error 0N1.owner");
      require(_COMICS.exist(tokenId), "error COMICS.exist");
      if (msg.sender != _COMICS.ownerOf(tokenId)) {
        address comicsOwner = _COMICS.ownerOf(tokenId);
        _COMICS.transferFrom(comicsOwner, msg.sender, tokenId);
      }
      i++;
    }
  }

  function transferCOMICS(address to, uint tokenId)
  public {
    require(msg.sender == _COMICS.ownerOf(tokenId), "error COMICS.owner");
    require(_COMICS.exist(tokenId), "error COMICS.exist");

    _COMICS.transferFrom(msg.sender, to, tokenId);
  }
}

// File: contracts/Ownable.sol



//SPDX-License-Identifier: MIT
pragma solidity ^0.8;

abstract contract Ownable {
    address private _owner;
    
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    
    modifier onlyOwner() {
        require(owner() == msg.sender, "error owner()");
        _;
    }

    constructor() { _transferOwnership(msg.sender); }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "error newOwner");
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}