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import {
method,
DeployArgs,
Permissions,
TokenContract,
AccountUpdateForest,
PublicKey,
Field,
Signature,
State,
state,
Struct,
Account,
UInt64,
AccountUpdate,
} from "o1js";
import { RedactedMinaNFTMapStateProof } from "./redactedmap";
import { MinaNFTContract } from "../contract/nft";
import { Metadata } from "../contract/metadata";
import { MinaNFTBadgeProof } from "./badgeproof";
class MinaNFTVerifierBadgeEvent extends Struct({
address: PublicKey,
owner: Field,
name: Field,
version: UInt64,
data: Metadata,
key: Field,
}) {
constructor(args: {
address: PublicKey;
owner: Field;
name: Field;
version: UInt64;
data: Metadata;
key: Field;
}) {
super(args);
}
}
class MinaNFTVerifierBadge extends TokenContract {
@state(Field) name = State<Field>();
@state(Field) owner = State<Field>();
@state(Field) verifiedKey = State<Field>();
@state(Field) verifiedKind = State<Field>();
@state(PublicKey) oracle = State<PublicKey>();
events = {
deploy: Field,
issue: MinaNFTVerifierBadgeEvent,
revoke: PublicKey,
};
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 issueBadge(
nft: PublicKey,
nftTokenId: Field,
badgeEvent: MinaNFTVerifierBadgeEvent,
signature: Signature,
proof: RedactedMinaNFTMapStateProof,
badgeProof: MinaNFTBadgeProof
) {
/*
Excluded pending resolution of the issue
https://github.com/o1-labs/o1js/issues/1245
const minanft = new MinaNFTContract(nft, nftTokenId);
badgeEvent.owner.assertEquals(minanft.owner.getAndRequireEquals());
badgeEvent.address.assertEquals(nft);
badgeEvent.name.assertEquals(minanft.name.getAndRequireEquals());
badgeEvent.version.assertEquals(minanft.version.getAndRequireEquals());
Metadata.assertEquals(
minanft.metadata.getAndRequireEquals(),
proof.publicInput.originalRoot
);
*/
badgeProof.publicInput.data.kind.assertEquals(
this.verifiedKind.getAndRequireEquals(),
"Kind mismatch"
);
badgeProof.publicInput.key.assertEquals(
this.verifiedKey.getAndRequireEquals(),
"Key mismatch"
);
Metadata.assertEquals(
badgeProof.publicInput.root,
proof.publicInput.redactedRoot
);
Metadata.assertEquals(badgeProof.publicInput.data, badgeEvent.data);
signature
.verify(
this.oracle.getAndRequireEquals(),
MinaNFTVerifierBadgeEvent.toFields(badgeEvent)
)
.assertEquals(true);
proof.verify();
badgeProof.verify();
// Issue verification badge
const tokenId = this.deriveTokenId();
const tokenBalance = AccountUpdate.create(
nft,
tokenId
).account.balance.getAndRequireEquals();
this.internal.mint({
address: nft,
amount: badgeEvent.version.sub(tokenBalance),
});
// Emit event
this.emitEvent("issue", badgeEvent);
}
@method async revokeBadge(nft: PublicKey, signature: Signature) {
const oracle = this.oracle.getAndRequireEquals();
signature.verify(oracle, nft.toFields());
const tokenId = this.deriveTokenId();
const tokenBalance = AccountUpdate.create(
nft,
tokenId
).account.balance.getAndRequireEquals();
// Revoke verification badge
this.internal.burn({ address: nft, amount: tokenBalance });
// Emit event
this.emitEvent("revoke", nft);
}
@method async verifyBadge(nft: PublicKey, nftTokenId: Field) {
const tokenId = this.deriveTokenId();
const tokenBalance = AccountUpdate.create(
nft,
tokenId
).account.balance.getAndRequireEquals();
const minanft = new MinaNFTContract(nft, nftTokenId);
const version = minanft.version.getAndRequireEquals();
version.assertEquals(tokenBalance);
}
}
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