Contract Name:
MimeticComic
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import { ERC721 } from "./ERC721/ERC721.sol";
import { Ownable } from "@openzeppelin/contracts/access/Ownable.sol";
import { IMimeticComic } from "./IMimeticComic.sol";
import { Base64 } from "./Base64.sol";
import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
import { IMirror } from "./IMirror.sol";
import { IERC2981 } from "@openzeppelin/contracts/interfaces/IERC2981.sol";
/**
* @title Mimetic Comic w/ Phantom Ownership
* @author @nftchance and @masonthechain
* @dev Implementation of EIP-721 Non-Fungible Token Standard, including the
* Metadata extension and combining with the usage of Mimetic Metadata,
* Phantom Ownership, and EIP-2309. Many of the features included in this
* contract will be limited time use / reserved for the future.
* @dev The use of hooks is not enabled by default which will leave some
* indexers not having the most up to date ownership record. Hooks solve
* this, however full benefits can only be enjoyed after migration.
*/
contract MimeticComic is
ERC721
, Ownable
, IMimeticComic
{
using Strings for uint8;
using Strings for uint256;
/*//////////////////////////////////////////////////////////////
TOKEN METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
///@dev Comic series metadata info and redemption time period.
struct Series {
string description; // Token description in displays
string ipfsHash; // Comic book cover
uint256 issuanceEnd; // When this issue can no longer be focused
}
///@dev Comic series index to series data.
mapping(uint8 => Series) public seriesToSeries;
///@dev Token id to comic series index.
mapping(uint256 => uint256) internal tokenToSeries;
///@dev Number of comic series indexes stored in a single index.
uint256 public constant PACKED = 64;
///@dev Number of bytes a series can take up.
uint256 public constant PACKED_SHIFT = 4;
///@dev Number of tokens required for end-of-road redemption.
uint256 public constant REDEMPTION_QUALIFIER = 13;
///@dev Nuclear Nerds token id to comic wildcard condition truth.
mapping(uint256 => bool) internal nerdToWildcard;
///@dev The default description of the collection and tokens.
string private collectionDescription;
///@dev Disclaimer message appended to wildcard tokens for buyer safety.
string private wildcardDescription;
///@dev Disclaimer message appended to tokens that have been redeemed.
string private redeemedDescription;
///@dev Management of redemption booleans bitpacked to lower storage needs.
///@notice `tokens` as it is a bitpacked mapping returned.
mapping(uint256 => uint256) public tokensToRedeemed;
/*//////////////////////////////////////////////////////////////
COLLECTION STATE MANAGEMENT
//////////////////////////////////////////////////////////////*/
///@dev Controls whether or not wildcards can be loaded.
bool public wildcardsLocked;
///@dev Controls whether or not master actions can be called.
bool public masterLocked;
///@dev Controls all series progression within the collection.
bool public locked;
///@dev Nuclear Nerd contracts that call transferHooks upon transfer.
mapping(address => bool) public hooks;
/*//////////////////////////////////////////////////////////////
ROYALTY LOGIC
//////////////////////////////////////////////////////////////*/
///@dev IPFS hash to the contract URI json.
string public contractURIHash;
///@dev On-chain royalty basis points.
uint256 public royaltyBasis = 690;
///@dev The floating point percentage used for royalty calculation.
uint256 private constant percentageTotal = 10000;
///@dev Team address that receives royalties from secondary sales.
address public royaltyReceiver;
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
///@dev EIP-2309 standard for more efficient ownership indexing events.
event ConsecutiveTransfer(
uint256 indexed fromTokenId
, uint256 toTokenId
, address indexed fromAddress
, address indexed toAddress
);
/*//////////////////////////////////////////////////////////////
ERRORS
//////////////////////////////////////////////////////////////*/
error CollectionStateInvalid();
error CollectionMasterLocked();
error CollectionWildcardsLocked();
error HookCallerMismatch();
error TokenMinted();
error TokenDoesNotExist();
error TokenOwnerMismatch();
error TokenNotWildcard();
error TokenBundleInvalid();
error TokenRedeemed();
error SeriesNotLoaded();
error SeriesAlreadyLoaded();
error SeriesAlreadyLocked();
error SeriesNotLocked();
error SeriesDirectionProhibited();
error SeriesBundleInvalid();
/*//////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(
string memory _name
, string memory _symbol
, string memory _seriesZeroDescription
, string memory _seriesZeroHash
, string memory _collectionDescription
, string memory _wildcardDescription
, string memory _redeemedDescription
, address _nerds
, address _royaltyReceiver
, string memory _contractURIHash
) ERC721(
_name
, _symbol
, _nerds
) {
///@dev Initialize series 0 that everyone starts with.
seriesToSeries[0] = Series(
_seriesZeroDescription
, _seriesZeroHash
, 42069
);
collectionDescription = _collectionDescription;
wildcardDescription = _wildcardDescription;
redeemedDescription = _redeemedDescription;
royaltyReceiver = _royaltyReceiver;
contractURIHash = _contractURIHash;
}
/*//////////////////////////////////////////////////////////////
MODIFIERS
//////////////////////////////////////////////////////////////*/
///@dev Prevents master locked actions.
modifier onlyMasterUnlocked() {
if(masterLocked) revert CollectionMasterLocked();
_;
}
///@dev Prevents unlocked actions.
modifier onlyUnlocked() {
if(locked) revert SeriesAlreadyLocked();
_;
}
///@dev Prevents locked actions.
modifier onlyLocked() {
if(!locked) revert SeriesNotLocked();
_;
}
///@dev Prevents actions not on a non-loaded series.
modifier onlyLoaded(uint8 _series) {
if(bytes(seriesToSeries[_series].ipfsHash).length == 0)
revert SeriesNotLoaded();
_;
}
///@dev Prevents actions on tokenIds greater than max supply.
modifier onlyInRange(uint256 _tokenId) {
if(_tokenId > MAX_SUPPLY - 1) revert TokenDoesNotExist();
_;
}
/*//////////////////////////////////////////////////////////////
METADATA INTILIAZATION
//////////////////////////////////////////////////////////////*/
/**
* @notice Allows the Nuclear Nerds team migrate the primary Nuclear
* Nerds collection without having to migrate comics and
* having instant updates as the comics would follow the migration.
* As soon as utilization has completed the enabling of
* master lock will prevent this function from ever being used
* again. Contract ownership is delegated to multi-sig for
* maximum security.
* @notice THIS WOULD NOT BE IMPLEMENTED IF IT WAS NOT NEEDED. ;)
* (Short time horizon on the usage and locking.)
* @param _mirror The address of the parent token to mirror ownership of.
*
* Requires:
* - sender must be contract owner
* - `masterLocked` must be false (default value)
*/
function loadMirror(
address _mirror
)
public
virtual
onlyMasterUnlocked()
onlyOwner()
{
mirror = IMirror(_mirror);
}
/**
* @notice Loads the wildcards that have direct redemption at the
* locking-point for physical transformation.
* @dev This function can only be ran once so that wildcards cannot
* be adjusted past the time of being established.
* @param _tokenIds The ids of the tokens that are wildcards.
*
* Requires:
* - sender must be contract owner
* - `wildcardsLocked` hash must be false (default value).
*/
function loadWildcards(
uint256[] calldata _tokenIds
)
public
virtual
onlyOwner()
{
if(wildcardsLocked) revert CollectionWildcardsLocked();
wildcardsLocked = true;
for(
uint8 i;
i < _tokenIds.length;
i++
) {
nerdToWildcard[_tokenIds[i]] = true;
}
}
/**
* @notice Allows token holders to emit an event with
* 'refreshed' ownership that using the mirrored ownership
* of the parent token. This way, indexers will pick up the new
* ownership for far cheaper still without having to write
* ownership.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
* @dev This is not needed for primary-use however, this is here for
* future-proofing backup for any small issues that
* take place upon delivery or future roll outs of new platforms. The
* primary of this use would be that the comic has not been seperated,
* but has found it's in a smart contract that needs the hook to
* complete processing.
*
* Requires:
* - `masterLocked` must be false.
* - token must NOT be claimed
* - sender must be owner of the token.
*/
function refreshToken(
uint256 _tokenId
)
public
onlyMasterUnlocked()
{
if(_exists(_tokenId)) revert TokenMinted();
address _owner = mirror.ownerOf(_tokenId);
if(_msgSender() != _owner) revert TokenOwnerMismatch();
emit Transfer(
address(this)
, _owner
, _tokenId
);
}
/**
* @notice Bundle version of token refreshing. This can only be called
* if all tokens are still paired and the caller is the owner
* of all comics being called.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
*
* Requires:
* - `masterLocked` must be false.
* - all tokens must NOT be claimed.
* - sender must be owner of all tokens.
*/
function refreshTokenBundle(
uint256[] calldata _tokenIds
)
public
onlyMasterUnlocked()
{
if(!mirror.isOwnerOf(
_msgSender()
, _tokenIds
)) revert TokenOwnerMismatch();
for(
uint256 i;
i < _tokenIds.length;
i++
) {
if(_exists(_tokenIds[i])) revert TokenMinted();
emit Transfer(
address(this)
, _msgSender()
, _tokenIds[i]
);
}
}
/**
* @notice Allows the Nuclear Nerds team to emit an event with
* 'refreshed' ownership utilizing the mirrored ownership
* of the parent token.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
* @dev This is not needed for primary-use however, this is here for
* future-proofing backup for any small issues that
* take place upon delivery or future roll outs of new platforms. The
* primary of this use would be that the comic has not been seperated,
* but has found it's in a smart contract that needs the hook to
* complete processing.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner.
*/
function loadCollectionOwners(
uint256 _fromTokenId
, uint256 _toTokenId
)
public
onlyMasterUnlocked()
onlyOwner()
{
for(
uint256 tokenId = _fromTokenId;
tokenId < _toTokenId;
tokenId++
) {
address _owner = mirror.ownerOf(tokenId);
emit Transfer(
address(0)
, _owner
, tokenId
);
require(
_checkOnERC721Received(
address(0)
, _owner
, tokenId
, ""
)
, "ERC721: transfer to non ERC721Receiver implementer"
);
}
}
/**
* @notice Allows the Nuclear Nerds team to emit Transfer events to a
* a specific target.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
* @dev This is not needed for primary-use however,
* this is here for future-proofing/backup for any small issues that
* take place upon delivery or future roll outs of new platforms.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner.
* - length of `to` must be the same length as the range of token ids.
*/
function loadCollectionCalldata(
uint256 _fromTokenId
, uint256 _toTokenId
, address[] calldata _to
)
public
onlyMasterUnlocked()
onlyOwner()
{
uint256 length = _toTokenId - _fromTokenId + 1;
if(length != _to.length) revert CollectionStateInvalid();
uint256 index;
for(
uint256 tokenId = _fromTokenId;
tokenId <= _toTokenId;
tokenId++
) {
emit Transfer(
address(0)
, _to[index++]
, tokenId
);
}
}
/**
* @notice Utilizes EIP-2309 to most efficiently emit the Transfer events
* needed to notify the platforms that this token exists.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner
*/
function loadCollection2309(
uint256 _fromTokenId
, uint256 _toTokenId
)
public
onlyMasterUnlocked()
onlyOwner()
{
emit ConsecutiveTransfer(
_fromTokenId
, _toTokenId
, address(0)
, address(this)
);
}
/**
* @notice Utilizes EIP-2309 to refresh the ownership of tokens in a
* collective batch. This is to be fired after tokens have been
* minted.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner
*/
function loadCollection2309From(
uint256 _fromTokenId
, uint256 _toTokenId
, address _from
)
public
onlyMasterUnlocked()
onlyOwner()
{
emit ConsecutiveTransfer(
_fromTokenId
, _toTokenId
, _from
, address(this)
);
}
/**
* @notice Utilizes EIP-2309 to most efficiently emit the Transfer events
* needed to notify the platforms that this token exists of a
* specific range of token ids AND receivers.
* @notice Does not update the real ownership state and merely notifies the
* platforms of an ownership record 'change' that they need
* to catalog.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner
*/
function loadCollection2309To(
uint256 _fromTokenId
, uint256 _toTokenId
, address _to
)
public
onlyMasterUnlocked()
onlyOwner()
{
emit ConsecutiveTransfer(
_fromTokenId
, _toTokenId
, address(0)
, _to
);
}
/**
* @notice Allows owners of contract to initialize a new series of
* the comic as Chapter 12 cannot be published on the same
* day as Chapter 1.
* @dev Fundamentally, a series is 'just' an IPFS hash.
* @param _series The index of the series being initialized.
* @param _ipfsHash The ipfs hash of the cover image of the series.
* @param _issuanceEnd When the issue can no longer be focused.
*
* Requires:
* - `locked` must be false.
* - sender must be contract owner
* `_series` hash must not be set.
*/
function loadSeries(
uint8 _series
, string memory _description
, string memory _ipfsHash
, uint256 _issuanceEnd
)
override
public
virtual
onlyUnlocked()
onlyOwner()
{
if(bytes(seriesToSeries[_series].ipfsHash).length != 0) {
revert SeriesAlreadyLoaded();
}
seriesToSeries[_series] = Series(
_description
, _ipfsHash
, _issuanceEnd
);
}
/*//////////////////////////////////////////////////////////////
LOCK MANAGEMENT
//////////////////////////////////////////////////////////////*/
/**
* @notice Locks the emission of Nuclear Nerd team member called
* loadCollection(x). By default this will remain open,
* however with time and the completed release of series
* the community may prefer the contract reach a truly
* immutable and decentralized state.
*
* Requires:
* - sender must be contract owner
*/
function masterLock()
public
virtual
onlyOwner()
{
masterLocked = true;
}
/**
* @notice Locks the series upgrading of the collection preventing any
* further series from being added and preventing holders
* from upgrading their series any further.
*
* Requires:
* - sender must be contract owner
*/
function lock()
override
public
virtual
onlyOwner()
{
locked = true;
}
/*//////////////////////////////////////////////////////////////
HOOK MANAGEMENT
//////////////////////////////////////////////////////////////*/
/**
* @notice Allows The Nuclear Nerd team to connect Transfer hooks
* to the comic state of a token.
* @dev Future feature. This can also be completely disabled and
* then locked to prevent any new team additions of hook contracts.
* @param _hook The address of the contract to accept an incoming
* event from.
*
* Requires:
* - `masterLocked` must be false.
* - sender must be contract owner.
*/
function toggleHook(
address _hook
)
public
onlyMasterUnlocked()
onlyOwner()
{
hooks[_hook] = !hooks[_hook];
}
/**
* @notice Handles the processing when a parent token of this
* is transferred. To be procesed within the handling of
* of the parent token. With this, ownership
* of the child token will update immediately across all
* indexers, marketplaces and tools.
* @dev Only emits an event for children tokens that haven't been seperated.
* @param _from The address transferring the parent token.
* @param _to The address transferring the child token.
* @param _tokenId The id of the parent:child token being transferred.
*
* Requires:
* - sender must be an enabled hook contract.
*/
function transferHook(
address _from
, address _to
, uint256 _tokenId
)
public
virtual
{
if(!hooks[_msgSender()]) revert HookCallerMismatch();
if(!_exists(_tokenId)) {
delete _tokenApprovals[_tokenId][_from];
emit Approval(
_from
, address(0)
, _tokenId
);
emit Transfer(
_from
, _to
, _tokenId
);
}
}
/**
* @notice Handles the processing when a parent token of this
* is transferred. To be procesed within the handling of
* of the parent token. With this, ownership
* of the child token will update immediately across all
* indexers, marketplaces and tools.
* @dev Only emits an event for children tokens that haven't been seperated.
* @param _from The address transferring the parent token.
* @param _to The address transferring the child token.
* @param _tokenId The id of the parent:child token being transferred.
*
* Requires:
* - sender must be an enabled hook contract.
*/
function safeTransferHook(
address _from
, address _to
, uint256 _tokenId
, bytes memory _data
)
public
virtual
{
if(!hooks[_msgSender()]) revert HookCallerMismatch();
if(!_exists(_tokenId)) {
delete _tokenApprovals[_tokenId][_from];
emit Approval(
_from
, address(0)
, _tokenId
);
emit Transfer(
_from
, _to
, _tokenId
);
require(
_checkOnERC721Received(
_from
, _to
, _tokenId
, _data
)
, "ERC721: transfer to non ERC721Receiver implementer"
);
}
}
/*//////////////////////////////////////////////////////////////
COMIC METADATA
//////////////////////////////////////////////////////////////*/
/**
* @notice Returns the ipfs image url.
* @param _series The index of the series we are getting the image for.
* @return ipfsString The url to ipfs where the image is represented.
*
* Requires:
* - Series index provided must be loaded.
* - Token of id must exist.
*/
function seriesImage(
uint8 _series
)
override
public
virtual
view
onlyLoaded(_series)
returns (
string memory ipfsString
)
{
ipfsString = string(
abi.encodePacked(
"ipfs://"
, seriesToSeries[_series].ipfsHash
)
);
}
/**
* @notice Returns the series JSON metadata that conforms to standards.
* @dev The response from this function is not intended for on-chain usage.
* @param _series The index of the series we are getting the image for.
* @return metadataString The JSON string of the metadata that represents
* the supplied series.
*
* Requires:
* - Series index provided must be loaded.
* - Token of id must exist.
*/
function seriesMetadata(
uint8 _series
, uint256 _tokenId
, bool redeemed
, bool exists
, bool wildcard
, uint256 votes
)
override
public
virtual
view
onlyLoaded(_series)
returns (
string memory metadataString
)
{
///@dev Append active series
///@note Nerds special prologue of #00 and all series below 10 are 0 padded
metadataString = string(
abi.encodePacked(
'{"trait_type":"Series","value":"#'
, _series < 10 ? string(
abi.encodePacked(
"0"
, _series.toString()
)
) : _series.toString()
, '"},'
)
);
///@dev Reflect the state of the series the comic is currently at
///@note Minting if issues is still open -- Limited if issues is closed and no more comics can evolve to this stage (series supply is functionally max supply locked)
metadataString = string(
abi.encodePacked(
metadataString
, string(
abi.encodePacked(
'{"trait_type":"Edition","value":"'
, seriesToSeries[_series].issuanceEnd < block.timestamp ? "Limited" : "Minting"
, '"},'
)
)
)
);
///@dev Append metadata to reflect the Pairing Status of the token
///@note When appended the ownership of the token is automatically updating until the pairing is broken through transferring or claiming.
metadataString = string(
abi.encodePacked(
metadataString
, string(
abi.encodePacked(
'{"trait_type":"Nerd","value":"'
, !exists ? string(
abi.encodePacked(
"#"
, _tokenId.toString()
)
) : "Unpaired"
, '"},'
)
)
)
);
///@dev Adds the Schrodinger trait if applicable and reflects the status of usage
if(wildcard) {
metadataString = string(
abi.encodePacked(
metadataString
, '{"trait_type":"Schrodinger'
, "'"
, 's Cat","value":"'
, redeemed ? "Dead" : "Alive"
, '"},'
)
);
///@dev Show whether or not the token has been used for the physical comic redemption -- does not show on Schrodingers
} else {
metadataString = string(
abi.encodePacked(
metadataString
, string(
abi.encodePacked(
'{"trait_type":"Status","value":"'
, redeemed ? "Redeemed" : "Unredeemed"
, '"},'
)
)
)
);
}
///@dev Reflect the current number of Story Votes the owner of a Comic token earns through ownership.
metadataString = string(
abi.encodePacked(
metadataString
, string(
abi.encodePacked(
'{"display_type":"number","trait_type":"Story Votes","value":"'
, votes.toString()
, '","max_value":"12"}'
)
)
)
);
}
/**
* @notice Allows the active series of the token to be retrieved.
* @dev Pick the number out from where it lives. All this does is pull down
* the number that we've stored in the data packed index. With the
* cumulative number in hand we nagivate into the proper bits and
* make sure we return the properly cased number.
* @param _tokenId The token to retrieve the comic book series for.
* @return series The index of the series the retrieved comic represents.
*
* Requires:
* - token id must exist
*/
function tokenSeries(
uint256 _tokenId
)
override
public
virtual
view
onlyInRange(_tokenId)
returns (
uint8 series
)
{
series = uint8(
(
tokenToSeries[_tokenId / PACKED] >> (
(_tokenId % PACKED) * PACKED_SHIFT
)
) & 0xF
);
}
/**
* @notice Get the number of votes for a token.
* @param _tokenId The comic tokenId to check votes for.
* @return The number of votes the token actively contributes.
*
* Requires:
* - token id must exist
*/
function tokenVotes(
uint256 _tokenId
)
public
virtual
view
onlyInRange(_tokenId)
returns (
uint8
)
{
if(nerdToWildcard[_tokenId]) return 12;
return tokenSeries(_tokenId);
}
/**
* @notice Determines if a Comic has been used for redemption.
* @param _tokenId The comic tokenId being checked.
* @return bool url to ipfs where the image is represented.
*
* Requires:
* - token id must exist
*/
function tokenRedeemed(
uint256 _tokenId
)
public
view
onlyInRange(_tokenId)
returns(
bool
)
{
uint256 flag = (
tokensToRedeemed[_tokenId / 256] >> _tokenId % 256
) & uint256(1);
return (flag == 1 ? true : false);
}
/**
* @notice Get the ipfs image url for a given token.
* @param _tokenId The comic tokenId desired to be updated.
* @return The url to ipfs where the image is represented.
*
* Requires:
* - token id must exist
*/
function tokenImage(
uint256 _tokenId
)
override
public
virtual
view
onlyInRange(_tokenId)
returns (
string memory
)
{
return seriesImage(tokenSeries(_tokenId));
}
/**
* @notice Returns the series JSON metadata that conforms to standards.
* @dev The response from this function is not intended for on-chain usage.
* @param _tokenId The comic tokenId desired to be updated.
* @return The JSON string of the metadata that represents
* the supplied series.
*
* Requires:
* - token id must exist
*/
function tokenMetadata(
uint256 _tokenId
)
override
public
virtual
view
onlyInRange(_tokenId)
returns (
string memory
)
{
return seriesMetadata(
tokenSeries(_tokenId)
, _tokenId
, tokenRedeemed(_tokenId)
, _exists(_tokenId)
, nerdToWildcard[_tokenId]
, tokenVotes(_tokenId)
);
}
/**
* @notice Generates the on-chain metadata for each non-fungible 1155.
* @param _tokenId The id of the token to get the uri data for.
* @return uri encoded json in the form of a string detailing the
* retrieved token.
*
* Requires:
* - token id must exist
*/
function tokenURI(
uint256 _tokenId
)
override
public
virtual
view
onlyInRange(_tokenId)
returns (
string memory uri
)
{
uint8 series = tokenSeries(_tokenId);
uri = seriesToSeries[series].description;
if(nerdToWildcard[_tokenId]) {
uri = string(
abi.encodePacked(
uri
, wildcardDescription
)
);
}
if(tokenRedeemed(_tokenId)) {
uri = string(
abi.encodePacked(
uri
, redeemedDescription
)
);
}
// Build the metadata string and return it as encoded data
uri = string(
abi.encodePacked(
"data:application/json;base64,"
, Base64.encode(
bytes(
abi.encodePacked(
'{"name":"Nuclear Nerds Comic #'
, _tokenId.toString()
, '","description":"'
, collectionDescription
, uri
, '","image":"'
, seriesImage(series)
, '?owner='
, Strings.toHexString(
uint160(ownerOf(_tokenId))
, 20
)
, '","attributes":['
, tokenMetadata(_tokenId)
, ']}'
)
)
)
)
);
}
/**
* @notice Helper function to assist in determining whether a Nuclear Nerd
* has been used to claim a comic.
* @dev This function will return false if even one of the tokenId
* parameters has been previously used to claim.
* @param _tokenIds The tokenIds of the Nuclear Nerds being checked
* for their claiming status.
*/
function isClaimable(
uint256[] calldata _tokenIds
)
public
view
returns (
bool
)
{
for(
uint256 i;
i < _tokenIds.length;
i++
) {
if(_exists(_tokenIds[i]))
return false;
}
return true;
}
/**
* @notice Helper function to used to determine if an array of
* tokens can still be used to redeem a physical.
* @dev This function will return false if even one of the tokenId
* parameters has been previously used to claim.
* @param _tokenIds The tokenIds of the comcis being checked.
*/
function isRedeemable(
uint256[] calldata _tokenIds
)
public
view
returns (
bool
)
{
for(
uint256 i;
i < _tokenIds.length;
i++
) {
if(tokenRedeemed(_tokenIds[i]))
return false;
}
return true;
}
/*//////////////////////////////////////////////////////////////
COMIC CONTROL
//////////////////////////////////////////////////////////////*/
/**
* @notice Allows holders of a Nuclear Nerd to claim a comic.
* @dev This mint function acts as the single token call for claiming
* multiple tokens at a time.
* @param _tokenId The tokenId of the Nuclear Nerd being used
* to claim a Comic.
*
* Requires:
* - sender must be owner of mirrored token.
* - token of id must NOT exist.
*/
function claimComic(
uint256 _tokenId
)
public
virtual
{
if (
mirror.ownerOf(_tokenId) != _msgSender()
) revert TokenOwnerMismatch();
_mint(
_msgSender()
, _tokenId
);
}
/**
* @notice Allows holders of Nuclear Nerds to claim a comic for each
* Nerd they own.
* @dev This function should be used with reason in mind. A holder with 100
* Nerds is far more likely to have a Nerd purchased in a
* long-pending transaction given low gas urgency.
* @param _tokenIds The tokenIds of the Nuclear Nerds being used
* to claim Comics.
*
* Requires:
* - sender must be owner of all mirrored tokens.
* - all ids of token must NOT exist.
*/
function claimComicBundle(
uint256[] calldata _tokenIds
)
public
virtual
{
if(!mirror.isOwnerOf(
_msgSender()
, _tokenIds
)) revert TokenOwnerMismatch();
for(
uint256 i;
i < _tokenIds.length;
i++
) {
_mint(
_msgSender()
, _tokenIds[i]
);
}
}
/**
* @notice Focuses a specific comic on a specific series.
* @dev Every _series has at most 8 bits so we can bitpack 32 of them
* (8 * 32 = 256) into a single storage slot of a uint256.
* This saves a significant amount of money because setting a
* non-zero slot consumes 20,000 gas where as it only costs 5,000
* gas. So it is cheaper to store 31/32 times.
*
* Requires:
* - series being upgraded to must have been loaded.
* - message sender must be the token owner.
* - comic cannot be downgraded.
* - cannot upgrade to series with closed issuance.
*/
function _focusSeries(
uint8 _series
, uint256 _tokenId
)
internal
onlyLoaded(_series)
{
if(_msgSender() != ownerOf(_tokenId)) revert TokenOwnerMismatch();
uint256 seriesIndex = _tokenId / PACKED;
uint256 bitShift = (_tokenId % PACKED) * PACKED_SHIFT;
if(uint8(
(tokenToSeries[seriesIndex] >> bitShift) & 0xF
) > _series) revert SeriesDirectionProhibited();
if(seriesToSeries[_series].issuanceEnd < block.timestamp) {
revert SeriesAlreadyLocked();
}
tokenToSeries[seriesIndex] =
(tokenToSeries[seriesIndex] & ~(0xF << bitShift))
| (uint256(_series) << bitShift);
}
/**
* @notice Allows the holder of a comic to progress
* the comic token to a subsequent issued series.
* @dev Once a comic has progressed to the next issued series,
* it cannot be reverted back to a previous series.
* @dev A token can progress from an early series to any series
* in the future provided Comics have not been locked.
* @param _series The desired series index.
* @param _tokenId The comic tokenId desired to be updated.
*
* Requires:
* - series of index must be unlocked.
*/
function focusSeries(
uint8 _series
, uint256 _tokenId
)
override
public
virtual
onlyUnlocked()
{
_focusSeries(
_series
, _tokenId
);
}
/**
* @notice Allows the holder to focus multiple comics with multiple series
* in the same transaction so that they can update a series of
* comics all at once without having to go through pain.
* @dev Once a comic has progressed to the next issued series,
* it cannot be reverted back to a previous series.
* @dev A token can progress from an early series to any series
* @param _series The array of desired series to be focused by tokenId.
* @param _tokenIds The array of tokenIds to be focused.
*
* Requires:
* - series of index must be unlocked.
* - series array and token id array lengths must be the same.
*/
function focusSeriesBundle(
uint8[] calldata _series
, uint256[] calldata _tokenIds
)
public
virtual
onlyUnlocked()
{
if(_series.length != _tokenIds.length) revert SeriesBundleInvalid();
for(
uint256 i;
i < _series.length;
i++
) {
_focusSeries(
_series[i]
, _tokenIds[i]
);
}
}
/**
* @notice Toggles the redemption stage for a token id.
* @dev Implements the boolean bitpacking of 256 values into a single
* storage slot. This means, that while we've created a gas-consuming
* mechanism we've minimized cost to the highest extent. A boolean is
* only 1 bit of information, but is typically 8 bits in solidity.
* With bitpacking, we can stuff 256 values into a single storage slot
* making it cheaper for the following 255 comics. This cost-savings
* scales through the entire collection.
*
* Requires:
* - message sender must be the token owner
* - cannot already be redeemed
*/
function _redeemComic(
uint256 _tokenId
)
internal
{
if(ownerOf(_tokenId) != _msgSender()) revert TokenOwnerMismatch();
uint256 tokenIndex = _tokenId / 256;
uint256 tokenShift = _tokenId % 256;
if(((
tokensToRedeemed[tokenIndex] >> tokenShift
) & uint256(1)) == 1) revert TokenRedeemed();
tokensToRedeemed[tokenIndex] = (
tokensToRedeemed[tokenIndex] | uint256(1) << tokenShift
);
}
/**
* @notice Allows a holder to redee an array of tokens.
* @dev The utilization of this function is not fully gated, though the
* return for 'redeeming comics' is dependent on external criteria.
* Nothing is earned or entitled by the redemption of a Comic unless
* in the defined times and opportunities.
* @dev Interface calls are extremely expensive. It is worthwhile to use
* the higher level processing that is available.
* @param _tokenIds The ids of the tokens to redeem.
*
* Requires:
* - collection evolution must be locked preventing any future focusing.
* - token ids array length must be equal to redemption capacity
*/
function redeemComics(
uint256[] calldata _tokenIds
)
public
virtual
onlyLocked()
{
if(
_tokenIds.length != REDEMPTION_QUALIFIER
) revert TokenBundleInvalid();
for (
uint256 i;
i < _tokenIds.length;
i++
) {
_redeemComic(_tokenIds[i]);
}
}
/**
* @notice Allows a wildcard holder to redeem their token.
* @dev The utilization of this function is not fully gated, though the
* return for 'redeeming comics' is dependent on external criteria.
* Nothing is earned or entitled by the redemption of a Comic unless
* in the defined times and opportunities.
* @dev Interface calls are extremely expensive. It is worthwhile to use
* the higher level processing that is available.
* @param _tokenId The id of the token to redeem.
*
* Requires:
* - collection evolution must be locked preventing any future focusing.
* - token id must be a wildcard representative of a wildcard Nuclear Nerd.
*/
function redeemWildcardComic(
uint256 _tokenId
)
public
virtual
onlyLocked()
{
if(!nerdToWildcard[_tokenId]) revert TokenNotWildcard();
_redeemComic(_tokenId);
}
/*//////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(
bytes4 interfaceId
)
public
view
virtual
override
returns (
bool
)
{
return
interfaceId == type(IERC2981).interfaceId ||
interfaceId == type(IMimeticComic).interfaceId ||
super.supportsInterface(interfaceId);
}
/*//////////////////////////////////////////////////////////////
ERC2981 LOGIC
//////////////////////////////////////////////////////////////*/
/**
* @notice Allows the Nuclear Nerds team to adjust contract-level metadata
* @param _contractURIHash The ipfs hash of the contract metadata
*/
function setContractURI(
string memory _contractURIHash
)
public
onlyOwner()
{
contractURIHash = _contractURIHash;
}
/**
* @notice Returns the accesible url of the contract level metadata
*/
function contractURI()
public
view
returns (
string memory
)
{
return string(
abi.encodePacked(
"ipfs://"
, contractURIHash
)
);
}
/**
* @notice Allows the Nuclear Nerds team to adjust where royalties
* are paid out if necessary.
* @param _royaltyReceiver The address to send royalties to
*/
function setRoyaltyReceiver(
address _royaltyReceiver
)
public
onlyOwner()
{
require(
_royaltyReceiver != address(0)
, "Royalties: new recipient is the zero address"
);
royaltyReceiver = _royaltyReceiver;
}
/**
* @notice Allows the Nuclear Nerds team to adjust the on-chain
* royalty basis points.
* @param _royaltyBasis The new basis points earned in royalties
*/
function setRoyaltyBasis(
uint256 _royaltyBasis
)
public
onlyOwner()
{
royaltyBasis = _royaltyBasis;
}
/**
* @notice EIP-2981 compliant view function for marketplaces
* to calculate the royalty percentage and what address
* receives them.
* @param _salePrice Total price of secondary sale
* @return address of receiver and the amount of payment to send
*/
function royaltyInfo(
uint256
, uint256 _salePrice
)
public
view
returns (
address
, uint256
)
{
return (
royaltyReceiver
, (_salePrice * royaltyBasis) / percentageTotal
);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import { IMirror } from "../IMirror.sol";
/**
* @notice This implementation of ERC721 is focused on mirroring the ownership
* of an existing collection to provide the initial ownership record.
* With this, functionally the token deployed is attached to the mirror
* --> until being detached. <--
* Once the Comic token has moved wallets independently, it functions
* as a normal ERC721 with it's own ownership.
*/
contract ERC721 is
Context
, ERC165
, IERC721
, IERC721Metadata
{
using Address for address;
using Strings for uint256;
///@dev Token name
string private _name;
///@dev Token symbol
string private _symbol;
uint256 internal constant MAX_SUPPLY = 8999;
///@dev hard coding in a max range of _owners is required.
address[MAX_SUPPLY] internal _owners;
///@dev Mapping from token ID to approved address
///@notice This is outside of the standard implementation as it is
/// token:holder due to an ownership record that mirrors
/// the parent. Once a token has been seperated from it's
/// parent, approvals are cleared upon transfer. While
/// paired, approvals are tied to the owning address.
/// This has been accepted as this is also how operator
/// approvals function by default.
mapping(uint256 => mapping(address => address)) internal _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) internal _operatorApprovals;
IMirror public mirror;
constructor(
string memory name_
, string memory symbol_
, address _mirror
) {
_name = name_;
_symbol = symbol_;
mirror = IMirror(_mirror);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(
bytes4 interfaceId
)
public
view
virtual
override(ERC165, IERC165)
returns (
bool
)
{
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @notice Get the balance of address utilizing the existing ownership * records of comic books / nerds
* @dev See {IERC721-balanceOf}.
* @dev This is extremely gassy and IS NOT intended for on-chain usage.
* @param account The address to check the total balance of.
* @return Amount of tokens that are owned by account
*/
function balanceOf(
address account
)
override
public
view
returns(
uint256
)
{
require(
account != address(0)
, "ERC721: balance query for the zero address"
);
uint256 counter;
for (
uint256 i;
i < MAX_SUPPLY;
i++
) {
if (ERC721.ownerOf(i) == account)
counter++;
}
return counter;
}
/**
* @dev See {IERC721-ownerOf}.
* @notice Overrides the default functionality of ownerOf() to utilize
* phantom ownership of the tokens until they are first
* transferred.
*/
function ownerOf(
uint256 tokenId
)
public
view
virtual
override
returns (
address
)
{
address _owner = _owners[tokenId];
if(_owner != address(0))
return _owner;
return mirror.ownerOf(tokenId);
}
/**
* @notice Returns the entire ownership record of the comic books up to
* the max supply.
*/
function owners()
external
view
returns(
address[MAX_SUPPLY] memory
)
{
return _owners;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name()
public
view
virtual
override
returns (
string memory
)
{
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol()
public
view
virtual
override
returns (
string memory
)
{
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(
uint256 tokenId
)
public
view
virtual
override
returns (
string memory
)
{
require(
_exists(tokenId)
, "ERC721Metadata: URI query for nonexistent token"
);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI()
internal
view
virtual
returns (
string memory
)
{
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(
address to
, uint256 tokenId
)
public
virtual
override
{
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(
to
, tokenId
);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(
uint256 tokenId
)
public
view
virtual
override
returns (
address
)
{
require(
tokenId < MAX_SUPPLY
, "ERC721: approved query for nonexistent token"
);
address _owner = ERC721.ownerOf(tokenId);
return _tokenApprovals[tokenId][_owner];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(
address operator
, bool approved
)
public
virtual
override
{
_setApprovalForAll(
_msgSender()
, operator
, approved
);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(
address owner
, address operator
)
public
view
virtual
override
returns (
bool
)
{
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from
, address to
, uint256 tokenId
)
public
virtual
override
{
require(
_isApprovedOrOwner(
_msgSender()
, tokenId
)
, "ERC721: transfer caller is not owner nor approved");
_transfer(
from
, to
, tokenId
);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from
, address to
, uint256 tokenId
)
public
virtual
override
{
safeTransferFrom(
from
, to
, tokenId
, ""
);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from
, address to
, uint256 tokenId
, bytes memory _data
)
public
virtual
override
{
require(
_isApprovedOrOwner(
_msgSender()
, tokenId
)
, "ERC721: transfer caller is not owner nor approved");
_safeTransfer(
from
, to
, tokenId
, _data
);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking
* first that contract recipients are aware of the ERC721 protocol to
* prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(
from
, to
, tokenId
);
require(
_checkOnERC721Received(
from
, to
, tokenId
, _data
)
, "ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(
uint256 tokenId
)
internal
view
virtual
returns (
bool
)
{
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(
address spender
, uint256 tokenId
)
internal
view
virtual
returns (
bool
)
{
require(
tokenId < MAX_SUPPLY
, "ERC721: operator query for nonexistent token"
);
address owner = ERC721.ownerOf(tokenId);
return (
spender == owner
|| getApproved(tokenId) == spender
|| isApprovedForAll(owner, spender)
);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to
, uint256 tokenId
)
internal
virtual
{
_safeMint(
to
, tokenId
, ""
);
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to
, uint256 tokenId
, bytes memory _data
)
internal
virtual
{
_mint(
to
, tokenId
);
require(
_checkOnERC721Received(
address(0)
, to
, tokenId
, _data
)
, "ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(
address to
, uint256 tokenId
)
internal
virtual
{
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(
address(0)
, to
, tokenId
);
_owners[tokenId] = to;
emit Transfer(
address(0)
, to
, tokenId
);
_afterTokenTransfer(
address(0)
, to
, tokenId
);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(
uint256 tokenId
)
internal
virtual
{
address _owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(
_owner
, address(0)
, tokenId
);
// Clear approvals
delete _tokenApprovals[tokenId][_owner];
emit Approval(
_owner
, address(0)
, tokenId
);
delete _owners[tokenId];
emit Transfer(
_owner
, address(0)
, tokenId
);
_afterTokenTransfer(
_owner
, address(0)
, tokenId
);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from
, address to
, uint256 tokenId
)
internal
virtual
{
address _owner = ERC721.ownerOf(tokenId);
require(
_owner == from
, "ERC721: transfer from incorrect owner"
);
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(
from
, to
, tokenId
);
// Clear approvals from the previous owner
delete _tokenApprovals[tokenId][_owner];
emit Approval(
_owner
, address(0)
, tokenId
);
_owners[tokenId] = to;
emit Transfer(
from
, to
, tokenId
);
_afterTokenTransfer(
from
, to
, tokenId
);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to
, uint256 tokenId
)
internal
virtual
{
address _owner = ERC721.ownerOf(tokenId);
_tokenApprovals[tokenId][_owner] = to;
emit Approval(
_owner
, to
, tokenId
);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner
, address operator
, bool approved
)
internal
virtual
{
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
)
internal
returns (
bool
)
{
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// 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);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
interface IMimeticComic {
function loadSeries(
uint8 _series
, string memory _description
, string memory _ipfsHash
, uint256 _issuanceEnd
)
external;
function lock()
external;
function seriesImage(
uint8 _series
)
external
view
returns (
string memory ipfsString
);
function seriesMetadata(
uint8 _series
, uint256 _tokenId
, bool redeemed
, bool exists
, bool wildcard
, uint256 votes
)
external
view
returns (
string memory metadataString
);
function tokenSeries(
uint256 _tokenId
)
external
view
returns (
uint8 series
);
function tokenImage(
uint256 _tokenId
)
external
view
returns (
string memory
);
function tokenMetadata(
uint256 _tokenId
)
external
view
returns (
string memory
);
function focusSeries(
uint8 _series
, uint256 _tokenId
)
external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/// @title Base64
/// @author Brecht Devos - <[email protected]>
/// @notice Provides functions for encoding/decoding base64
library Base64 {
string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
bytes internal constant TABLE_DECODE = hex"0000000000000000000000000000000000000000000000000000000000000000"
hex"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000"
hex"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000"
hex"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000";
function encode(bytes memory data) internal pure returns (string memory) {
if (data.length == 0) return '';
// load the table into memory
string memory table = TABLE_ENCODE;
// 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) {}
{
// read 3 bytes
dataPtr := add(dataPtr, 3)
let input := mload(dataPtr)
// write 4 characters
mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
resultPtr := add(resultPtr, 1)
mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
resultPtr := add(resultPtr, 1)
mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F))))
resultPtr := add(resultPtr, 1)
mstore8(resultPtr, 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;
}
function decode(string memory _data) internal pure returns (bytes memory) {
bytes memory data = bytes(_data);
if (data.length == 0) return new bytes(0);
require(data.length % 4 == 0, "invalid base64 decoder input");
// load the table into memory
bytes memory table = TABLE_DECODE;
// every 4 characters represent 3 bytes
uint256 decodedLen = (data.length / 4) * 3;
// add some extra buffer at the end required for the writing
bytes memory result = new bytes(decodedLen + 32);
assembly {
// padding with '='
let lastBytes := mload(add(data, mload(data)))
if eq(and(lastBytes, 0xFF), 0x3d) {
decodedLen := sub(decodedLen, 1)
if eq(and(lastBytes, 0xFFFF), 0x3d3d) {
decodedLen := sub(decodedLen, 1)
}
}
// set the actual output length
mstore(result, decodedLen)
// 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, 4 characters at a time
for {} lt(dataPtr, endPtr) {}
{
// read 4 characters
dataPtr := add(dataPtr, 4)
let input := mload(dataPtr)
// write 3 bytes
let output := add(
add(
shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)),
shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))),
add(
shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)),
and(mload(add(tablePtr, and( input , 0xFF))), 0xFF)
)
)
mstore(resultPtr, shl(232, output))
resultPtr := add(resultPtr, 3)
}
}
return result;
}
}
// 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);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
interface IMirror {
function ownerOf(uint256 tokenId_)
external
view
returns (
address
);
function isOwnerOf(
address account
, uint256[] calldata _tokenIds
)
external
view
returns (
bool
);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/IERC2981.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*
* _Available since v4.5._
*/
interface IERC2981 is IERC165 {
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be payed in that same unit of exchange.
*/
function royaltyInfo(uint256 tokenId, uint256 salePrice)
external
view
returns (address receiver, uint256 royaltyAmount);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// 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;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)
pragma solidity ^0.8.0;
import "../utils/introspection/IERC165.sol";