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import {
method,
TokenContract,
AccountUpdate,
PublicKey,
state,
State,
Field,
Bool,
Permissions,
DeployArgs,
VerificationKey,
Account,
UInt64,
Signature,
Struct,
AccountUpdateForest,
} from "o1js";
import { MinaNFTContract } from "./nft";
import { Update } from "./metadata";
import { MinaNFTMetadataUpdateProof } from "./update";
import { EscrowTransfer, EscrowApproval } from "./escrow";
import { EscrowTransferProof } from "./transfer";
/**
* NFTMintData is the data for the minting of the NFT
* @property address The address of the NFT
* @property name The name of the NFT encoded in Field
* @property initialState The initial state of the NFT (8 Fields)
* @property verifier The verifier of the NFT - the Name Service contract that sends this update
*/
class NFTMintData extends Struct({
address: PublicKey,
name: Field,
initialState: [Field, Field, Field, Field, Field, Field, Field, Field],
verifier: PublicKey,
}) {
constructor(value: {
address: PublicKey;
name: Field;
initialState: [Field, Field, Field, Field, Field, Field, Field, Field];
verifier: PublicKey;
}) {
super(value);
}
}
/**
* MintData is the data for the minting of the NFT
* @property nft The {@link NFTMintData} of the NFT
* @property verificationKey The verification key of the MinaNFTContract
* @property signature The signature of the name service allowing the use of name
*/
class MintData extends Struct({
nft: NFTMintData,
verificationKey: VerificationKey,
signature: Signature,
}) {
constructor(value: {
nft: NFTMintData;
verificationKey: VerificationKey;
signature: Signature;
}) {
super(value);
}
}
/**
* MinaNFTNameServiceContract is a smart contract that implements the Mina NFT Name Service standard.
* @property oracle The oracle of the contract - the public key used to sign name allowances
*/
class MinaNFTNameServiceContract extends TokenContract {
@state(PublicKey) oracle = State<PublicKey>();
init() {
super.init();
}
events = {
mint: NFTMintData,
upgrade: PublicKey,
update: Update,
escrowTransfer: EscrowTransfer,
approveEscrow: EscrowApproval,
};
async deploy(args: DeployArgs) {
super.deploy(args);
this.account.permissions.set({
...Permissions.default(),
editState: Permissions.proof(),
});
}
async approveBase(forest: AccountUpdateForest) {
// https://discord.com/channels/484437221055922177/1215258350577647616
// this.checkZeroBalanceChange(forest);
//forest.isEmpty().assertEquals(Bool(true));
throw Error(
"transfers of tokens are not allowed, change the owner instead"
);
}
@method async setOracle(newOracle: PublicKey, signature: Signature) {
const oracle = this.oracle.getAndRequireEquals();
signature
.verify(oracle, [...newOracle.toFields(), ...this.address.toFields()])
.assertEquals(true);
this.oracle.set(newOracle);
}
isNFT(address: PublicKey) {
AccountUpdate.create(address, this.deriveTokenId())
.account.balance.getAndRequireEquals()
.assertEquals(UInt64.from(1_000_000_000));
}
/**
* Upgrade the NFT to the new version
* @param address the address of the NFT
* @param vk the verification key of the new MinaNFTContract
* @param signature the signature of the name service allowing the upgrading of the NFT
*/
@method async upgrade(
address: PublicKey,
vk: VerificationKey,
signature: Signature
) {
this.isNFT(address);
const oracle = this.oracle.getAndRequireEquals();
signature
.verify(oracle, [...address.toFields(), vk.hash])
.assertEquals(true);
const tokenId = this.deriveTokenId();
const update = AccountUpdate.createSigned(address, tokenId);
update.body.update.verificationKey = { isSome: Bool(true), value: vk };
this.emitEvent("upgrade", address);
}
/**
* Mints the NFT
* @param data the {@link MintData} of the NFT
*/
@method async mint(data: MintData) {
const oracle = this.oracle.getAndRequireEquals();
data.signature
.verify(oracle, [
...data.nft.address.toFields(),
data.nft.name,
data.verificationKey.hash,
...data.nft.verifier.toFields(),
])
.assertEquals(true);
data.nft.verifier.assertEquals(this.address);
data.nft.name.assertEquals(data.nft.initialState[0]);
this.internal.mint({ address: data.nft.address, amount: 1_000_000_000 });
const tokenId = this.deriveTokenId();
const update = AccountUpdate.createSigned(data.nft.address, tokenId);
update.body.update.verificationKey = {
isSome: Bool(true),
value: data.verificationKey,
};
update.body.update.permissions = {
isSome: Bool(true),
value: {
...Permissions.default(),
editState: Permissions.proof(),
},
};
data.nft.initialState[0].assertEquals(data.nft.name);
update.body.update.appState = [
{ isSome: Bool(true), value: data.nft.initialState[0] },
{ isSome: Bool(true), value: data.nft.initialState[1] },
{ isSome: Bool(true), value: data.nft.initialState[2] },
{ isSome: Bool(true), value: data.nft.initialState[3] },
{ isSome: Bool(true), value: data.nft.initialState[4] },
{ isSome: Bool(true), value: data.nft.initialState[5] },
{ isSome: Bool(true), value: data.nft.initialState[6] },
{ isSome: Bool(true), value: data.nft.initialState[7] },
];
this.emitEvent("mint", data.nft);
}
/**
* Updates metadata of the NFT
* @param address address of the NFT
* @param update {@link Update} - data for the update
* @param signature signature of the owner
* @param owner owner's public key
* @param proof {@link MinaNFTMetadataUpdateProof} - proof of the update of the metadata to be correctly inserted into the Merkle Map
*/
@method async update(
address: PublicKey,
update: Update,
signature: Signature,
owner: PublicKey,
proof: MinaNFTMetadataUpdateProof
) {
this.isNFT(address);
this.address.assertEquals(update.verifier);
const tokenId = this.deriveTokenId();
const nft = new MinaNFTContract(address, tokenId);
await nft.update(update, signature, owner, proof);
this.emitEvent("update", update);
}
/**
* Transfer the NFT to new owner
* @param address address of the NFT
* @param data {@link EscrowTransfer} - data for the transfer
* @param signature1 signature of the first escrow
* @param signature2 signature of the second escrow
* @param signature3 signature of the third escrow
* @param escrow1 public key of the first escrow
* @param escrow2 public key of the second escrow
* @param escrow3 public key of the third escrow
*/
@method async escrowTransfer(
address: PublicKey,
data: EscrowTransfer,
signature1: Signature,
signature2: Signature,
signature3: Signature,
escrow1: PublicKey,
escrow2: PublicKey,
escrow3: PublicKey
) {
this.isNFT(address);
const tokenId = this.deriveTokenId();
const nft = new MinaNFTContract(address, tokenId);
await nft.escrowTransfer(
data,
signature1,
signature2,
signature3,
escrow1,
escrow2,
escrow3
);
this.emitEvent("escrowTransfer", data);
}
/**
* Approve setting of the new escrow
* @param address address of the NFT
* @param proof {@link EscrowTransferProof} - escrow proof
*/
@method async approveEscrow(address: PublicKey, proof: EscrowTransferProof) {
this.isNFT(address);
const tokenId = this.deriveTokenId();
const nft = new MinaNFTContract(address, tokenId);
await nft.approveEscrow(proof);
this.emitEvent("approveEscrow", proof.publicInput.approval);
}
}
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