// File: contracts/game/MetadataHandler.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

import "./lib/Base64.sol";
import "./interfaces/Interfaces.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

// solhint-disable quotes

contract MetadataHandler is Ownable {
  using Strings for uint256;

  InventoryCelestialsLike public inventoryCelestials;

  InventoryFreaksLike public inventoryFreaks;

  constructor(address newInventoryCelestials, address newInventoryFreaks) {
    inventoryCelestials = InventoryCelestialsLike(newInventoryCelestials);
    inventoryFreaks = InventoryFreaksLike(newInventoryFreaks);
  }

  function setInventories(address newInventoryCelestials, address newInventoryFreaks) external onlyOwner {
    inventoryCelestials = InventoryCelestialsLike(newInventoryCelestials);
    inventoryFreaks = InventoryFreaksLike(newInventoryFreaks);
  }

  function getCelestialTokenURI(uint256 id, Celestial memory character) external view returns (string memory) {
    bytes memory name = abi.encodePacked("Celestial #", id.toString());
    bytes memory attributes = inventoryCelestials.getAttributes(character, id);
    bytes memory svg = _buildSVG(inventoryCelestials.getImage(id));
    return string(_buildJSON(name, attributes, svg));
  }

  function getFreakTokenURI(uint256 id, Freak memory character) external view returns (string memory) {
    bytes memory name = abi.encodePacked("Freak #", id.toString());
    bytes memory attributes = inventoryFreaks.getAttributes(character, id);
    bytes memory svg = _buildSVG(inventoryFreaks.getImage(character));
    return string(_buildJSON(name, attributes, svg));
  }

  function _buildSVG(bytes memory data) internal pure returns (bytes memory) {
    bytes memory output = abi.encodePacked(
      '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="character" width="100%" height="100%" version="1.1" viewBox="0 0 64 64">',
      data,
      "<style>#character{shape-rendering: crispedges; image-rendering: -webkit-crisp-edges; image-rendering: -moz-crisp-edges; image-rendering: crisp-edges; image-rendering: pixelated; -ms-interpolation-mode: nearest-neighbor;}</style></svg>"
    );

    return abi.encodePacked("data:image/svg+xml;base64,", Base64.encode(bytes(output)));
  }

  function _buildJSON(
    bytes memory name,
    bytes memory attributes,
    bytes memory image
  ) internal pure returns (bytes memory) {
    bytes memory output = abi.encodePacked(
      '{"name":"',
      name,
      '","description":"Build your guild, battle your foes with the first on-chain PvP. Hunt for fortune and glory shall be yours!","attributes":[',
      attributes,
      '],"image":"',
      image,
      '"}'
    );

    return abi.encodePacked("data:application/json;base64,", Base64.encode(output));
  }
}

// File: contracts/game/lib/Base64.sol



// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.0;

library Base64 {
  string internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

  function encode(bytes memory data) internal pure returns (string memory) {
    if (data.length == 0) return "";

    // load the table into memory
    string memory table = TABLE;

    // multiply by 4/3 rounded up
    uint256 encodedLen = 4 * ((data.length + 2) / 3);

    // add some extra buffer at the end required for the writing
    string memory result = new string(encodedLen + 32);

    assembly {
      // set the actual output length
      mstore(result, encodedLen)

      // prepare the lookup table
      let tablePtr := add(table, 1)

      // input ptr
      let dataPtr := data
      let endPtr := add(dataPtr, mload(data))

      // result ptr, jump over length
      let resultPtr := add(result, 32)

      // run over the input, 3 bytes at a time
      for {

      } lt(dataPtr, endPtr) {

      } {
        dataPtr := add(dataPtr, 3)

        // read 3 bytes
        let input := mload(dataPtr)

        // write 4 characters
        mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(18, input), 0x3F)))))
        resultPtr := add(resultPtr, 1)
        mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(12, input), 0x3F)))))
        resultPtr := add(resultPtr, 1)
        mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(6, input), 0x3F)))))
        resultPtr := add(resultPtr, 1)
        mstore(resultPtr, shl(248, mload(add(tablePtr, and(input, 0x3F)))))
        resultPtr := add(resultPtr, 1)
      }

      // padding with '='
      switch mod(mload(data), 3)
      case 1 {
        mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
      }
      case 2 {
        mstore(sub(resultPtr, 1), shl(248, 0x3d))
      }
    }

    return result;
  }
}

// File: contracts/game/interfaces/Interfaces.sol



// SPDX-License-Identifier: Unlicense
pragma solidity 0.8.11;

import "./Structs.sol";

interface MetadataHandlerLike {
  function getCelestialTokenURI(uint256 id, Celestial memory character) external view returns (string memory);

  function getFreakTokenURI(uint256 id, Freak memory character) external view returns (string memory);
}

interface InventoryCelestialsLike {
  function getAttributes(Celestial memory character, uint256 id) external pure returns (bytes memory);

  function getImage(uint256 id) external view returns (bytes memory);
}

interface InventoryFreaksLike {
  function getAttributes(Freak memory character, uint256 id) external view returns (bytes memory);

  function getImage(Freak memory character) external view returns (bytes memory);
}

interface IFnG {
  function transferFrom(
    address from,
    address to,
    uint256 id
  ) external;

  function ownerOf(uint256 id) external returns (address owner);

  function isFreak(uint256 tokenId) external view returns (bool);

  function getSpecies(uint256 tokenId) external view returns (uint8);

  function getFreakAttributes(uint256 tokenId) external view returns (Freak memory);

  function setFreakAttributes(uint256 tokenId, Freak memory attributes) external;

  function getCelestialAttributes(uint256 tokenId) external view returns (Celestial memory);

  function setCelestialAttributes(uint256 tokenId, Celestial memory attributes) external;
}

interface IFBX {
  function mint(address to, uint256 amount) external;

  function burn(address from, uint256 amount) external;
}

interface ICKEY {
  function ownerOf(uint256 tokenId) external returns (address);
}

interface IVAULT {
  function depositsOf(address account) external view returns (uint256[] memory);
  function _depositedBlocks(address account, uint256 tokenId) external returns(uint256);
}

interface ERC20Like {
  function balanceOf(address from) external view returns (uint256 balance);

  function burn(address from, uint256 amount) external;

  function mint(address from, uint256 amount) external;

  function transfer(address to, uint256 amount) external;
}

interface ERC1155Like {
  function mint(
    address to,
    uint256 id,
    uint256 amount
  ) external;

  function burn(
    address from,
    uint256 id,
    uint256 amount
  ) external;
}

interface ERC721Like {
  function transferFrom(
    address from,
    address to,
    uint256 id
  ) external;

  function transfer(address to, uint256 id) external;

  function ownerOf(uint256 id) external returns (address owner);

  function mint(address to, uint256 tokenid) external;
}

interface PortalLike {
  function sendMessage(bytes calldata) external;
}

// File: @openzeppelin/contracts/utils/Strings.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/game/interfaces/Structs.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;

struct Freak {
  uint8 species;
  uint8 body;
  uint8 armor;
  uint8 mainHand;
  uint8 offHand;
  uint8 power;
  uint8 health;
  uint8 criticalStrikeMod;

}
struct Celestial {
  uint8 healthMod;
  uint8 powMod;
  uint8 cPP;
  uint8 cLevel;
}

struct Layer {
  string name;
  string data;
}

struct LayerInput {
  string name;
  string data;
  uint8 layerIndex;
  uint8 itemIndex;
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}