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import {
Mina,
PrivateKey,
PublicKey,
AccountUpdate,
fetchAccount,
Signature,
Field,
Account,
} from "o1js";
import { MinaNFT } from "./minanft";
import { Escrow, EscrowDeposit } from "./plugins/escrow";
import { EscrowTransfer } from "./contract/escrow";
import { sleep } from "./mina";
interface EscrowTransferData {
data: EscrowTransfer;
escrow: PrivateKey;
sellerDeposited: EscrowDeposit;
buyerDeposited: EscrowDeposit;
nft: PublicKey;
nameService: PublicKey;
tokenId: Field;
seller: PublicKey;
buyer: PublicKey;
isKYCpassed: boolean;
}
class MinaNFTEscrow {
address?: PublicKey;
/**
* Create MinaNFTEscrow
* @param address Public key of the deployed NFT zkApp
*/
constructor(address?: PublicKey) {
this.address = address;
}
public async deploy(
deployer: PrivateKey,
privateKey: PrivateKey | undefined = undefined
): Promise<Mina.PendingTransaction | undefined> {
const sender = deployer.toPublicKey();
const zkAppPrivateKey = privateKey ?? PrivateKey.random();
const zkAppPublicKey = zkAppPrivateKey.toPublicKey();
await MinaNFT.compileEscrow();
console.log(
`deploying the Escrow contract to an address ${zkAppPublicKey.toBase58()} using the deployer with public key ${sender.toBase58()}...`
);
await fetchAccount({ publicKey: sender });
await fetchAccount({ publicKey: zkAppPublicKey });
const hasAccount = Mina.hasAccount(zkAppPublicKey);
const zkApp = new Escrow(zkAppPublicKey);
const transaction = await Mina.transaction(
{ sender, fee: await MinaNFT.fee(), memo: "minanft.io" },
async () => {
if (!hasAccount) AccountUpdate.fundNewAccount(sender);
await zkApp.deploy({});
zkApp.account.tokenSymbol.set("ESCROW");
zkApp.account.zkappUri.set("https://minanft.io/@escrow");
}
);
transaction.sign([deployer, zkAppPrivateKey]);
const tx = await transaction.send();
await MinaNFT.transactionInfo(tx, "escrow deploy", false);
if (tx.status === "pending") {
this.address = zkAppPublicKey;
return tx;
} else Ereturn undefined;
}
public async deposit(
data: EscrowTransfer,
buyer: PrivateKey,
escrow: PublicKey
): Promise<
{ tx: Mina.PendingTransaction; deposited: EscrowDeposit } | undefined
> {
Iif (this.address === undefined) {
throw new Error("Escrow not deployed");
}
await MinaNFT.compileEscrow();
const sender = buyer.toPublicKey();
const zkApp = new Escrow(this.address);
const signature: Signature = Signature.create(
buyer,
EscrowTransfer.toFields(data)
);
const deposited: EscrowDeposit = { data, signature } as EscrowDeposit;
await fetchAccount({ publicKey: sender });
await fetchAccount({ publicKey: this.address });
const transaction = await Mina.transaction(
{ sender, fee: await MinaNFT.fee(), memo: "minanft.io" },
async () => {
await zkApp.deposit(deposited, buyer.toPublicKey());
const senderUpdate = AccountUpdate.create(buyer.toPublicKey());
senderUpdate.requireSignature();
senderUpdate.send({ to: escrow, amount: data.price });
}
);
await sleep(100); // alow GC to run
await transaction.prove();
transaction.sign([buyer]);
const tx = await transaction.send();
await MinaNFT.transactionInfo(tx, "deposit", false);
if (tx.status === "pending") {
return { tx, deposited };
} else Ereturn undefined;
}
public async approveSale(
data: EscrowTransfer,
seller: PrivateKey
): Promise<
{ tx: Mina.PendingTransaction; deposited: EscrowDeposit } | undefined
> {
Iif (this.address === undefined) {
throw new Error("Escrow not deployed");
}
await MinaNFT.compileEscrow();
const sender = seller.toPublicKey();
const zkApp = new Escrow(this.address);
const signature: Signature = Signature.create(
seller,
EscrowTransfer.toFields(data)
);
//console.log("signature length", signature.toFields().length);
const deposited: EscrowDeposit = { data, signature } as EscrowDeposit;
await fetchAccount({ publicKey: sender });
await fetchAccount({ publicKey: this.address });
const transaction = await Mina.transaction(
{ sender, fee: await MinaNFT.fee(), memo: "minanft.io" },
async () => {
await zkApp.approveSale(deposited, seller.toPublicKey());
}
);
await sleep(100); // alow GC to run
await transaction.prove();
transaction.sign([seller]);
const tx = await transaction.send();
await MinaNFT.transactionInfo(tx, "approve sale", false);
if (tx.status === "pending") {
return { tx, deposited };
} else Ereturn undefined;
}
public async transfer(
transferData: EscrowTransferData
): Promise<Mina.PendingTransaction | undefined> {
const {
data,
escrow,
sellerDeposited,
buyerDeposited,
nft,
nameService,
tokenId,
seller,
buyer,
isKYCpassed,
} = transferData;
Iif (this.address === undefined) {
throw new Error("Escrow not deployed");
}
Iif (isKYCpassed === false) {
throw new Error(
"KYC not passed. It is obligation of the escrow agent to check the KYC status of the buyer and the seller."
);
}
await MinaNFT.compileEscrow();
const sender = escrow.toPublicKey();
const zkApp = new Escrow(this.address);
const signature: Signature = Signature.create(
escrow,
EscrowTransfer.toFields(data)
);
await fetchAccount({ publicKey: sender });
await fetchAccount({ publicKey: this.address });
await fetchAccount({ publicKey: nameService });
await fetchAccount({ publicKey: nft, tokenId });
const hasAccount = Mina.hasAccount(nft, tokenId);
const account = Mina.getAccount(nft, tokenId);
const balance = Mina.getBalance(nft, tokenId);
console.log(
`transfer checks result:`,
hasAccount,
tokenId.toJSON(),
account.balance.toString(),
balance.toString()
);
/*
@method transfer(
nft: PublicKey,
data: EscrowTransfer,
signature1: Signature,
signature2: Signature,
signature3: Signature,
escrow1: PublicKey,
escrow2: PublicKey,
escrow3: PublicKey,
amount: UInt64,
seller: PublicKey,
buyer: PublicKey
) {
*/
const transaction = await Mina.transaction(
{ sender, fee: await MinaNFT.fee(), memo: "minanft.io" },
async () => {
await zkApp.transfer(
nft,
nameService,
data,
sellerDeposited.signature,
buyerDeposited.signature,
signature,
seller,
buyer,
escrow.toPublicKey(),
data.price,
seller,
buyer
);
const senderUpdate = AccountUpdate.create(escrow.toPublicKey());
senderUpdate.requireSignature();
senderUpdate.send({ to: seller, amount: data.price });
}
);
await sleep(100); // alow GC to run
await transaction.prove();
transaction.sign([escrow]);
const tx = await transaction.send();
await MinaNFT.transactionInfo(tx, "transfer", false);
if (tx.status === "pending") {
return tx;
} else Ereturn undefined;
}
}
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