package qora.transaction;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.json.simple.JSONObject;
import com.google.common.primitives.Bytes;
import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;
import database.DBSet;
import qora.account.Account;
import qora.account.PrivateKeyAccount;
import qora.account.PublicKeyAccount;
import qora.crypto.Crypto;
import qora.naming.Name;
public class UpdateNameTransaction extends Transaction
{
private static final int OWNER_LENGTH = 32;
private static final int REFERENCE_LENGTH = 64;
private static final int FEE_LENGTH = 8;
private static final int SIGNATURE_LENGTH = 64;
private static final int BASE_LENGTH = TIMESTAMP_LENGTH + REFERENCE_LENGTH + OWNER_LENGTH + FEE_LENGTH + SIGNATURE_LENGTH;
private PublicKeyAccount owner;
private Name name;
public UpdateNameTransaction(PublicKeyAccount owner, Name name, BigDecimal fee, long timestamp, byte[] reference, byte[] signature)
{
super(UPDATE_NAME_TRANSACTION, fee, timestamp, reference, signature);
this.owner = owner;
this.name = name;
}
//GETTERS/SETTERS
public PublicKeyAccount getOwner()
{
return this.owner;
}
public Name getName()
{
return this.name;
}
//PARSE CONVERT
public static Transaction Parse(byte[] data) throws Exception
{
//CHECK IF WE MATCH BLOCK LENGTH
if(data.length < BASE_LENGTH)
{
throw new Exception("Data does not match block length");
}
int position = 0;
//READ TIMESTAMP
byte[] timestampBytes = Arrays.copyOfRange(data, position, position + TIMESTAMP_LENGTH);
long timestamp = Longs.fromByteArray(timestampBytes);
position += TIMESTAMP_LENGTH;
//READ REFERENCE
byte[] reference = Arrays.copyOfRange(data, position, position + REFERENCE_LENGTH);
position += REFERENCE_LENGTH;
//READ OWNER
byte[] registrantBytes = Arrays.copyOfRange(data, position, position + OWNER_LENGTH);
PublicKeyAccount owner = new PublicKeyAccount(registrantBytes);
position += OWNER_LENGTH;
//READ NAME
Name name = Name.Parse(Arrays.copyOfRange(data, position, data.length));
position += name.getDataLength();
//READ FEE
byte[] feeBytes = Arrays.copyOfRange(data, position, position + FEE_LENGTH);
BigDecimal fee = new BigDecimal(new BigInteger(feeBytes), 8);
position += FEE_LENGTH;
//READ SIGNATURE
byte[] signatureBytes = Arrays.copyOfRange(data, position, position + SIGNATURE_LENGTH);
return new UpdateNameTransaction(owner, name, fee, timestamp, reference, signatureBytes);
}
@SuppressWarnings("unchecked")
@Override
public JSONObject toJson()
{
//GET BASE
JSONObject transaction = this.getJsonBase();
//ADD REGISTRANT/NAME/VALUE
transaction.put("owner", this.owner.getAddress());
transaction.put("newOwner", this.name.getOwner().getAddress());
transaction.put("name", this.name.getName());
transaction.put("newValue", this.name.getValue());
return transaction;
}
@Override
public byte[] toBytes()
{
byte[] data = new byte[0];
//WRITE TYPE
byte[] typeBytes = Ints.toByteArray(UPDATE_NAME_TRANSACTION);
typeBytes = Bytes.ensureCapacity(typeBytes, TYPE_LENGTH, 0);
data = Bytes.concat(data, typeBytes);
//WRITE TIMESTAMP
byte[] timestampBytes = Longs.toByteArray(this.timestamp);
timestampBytes = Bytes.ensureCapacity(timestampBytes, TIMESTAMP_LENGTH, 0);
data = Bytes.concat(data, timestampBytes);
//WRITE REFERENCE
data = Bytes.concat(data, this.reference);
//WRITE OWNER
data = Bytes.concat(data, this.owner.getPublicKey());
//WRITE NAME
data = Bytes.concat(data , this.name.toBytes());
//WRITE FEE
byte[] feeBytes = this.fee.unscaledValue().toByteArray();
byte[] fill = new byte[FEE_LENGTH - feeBytes.length];
feeBytes = Bytes.concat(fill, feeBytes);
data = Bytes.concat(data, feeBytes);
//SIGNATURE
data = Bytes.concat(data, this.signature);
return data;
}
@Override
public int getDataLength()
{
return TYPE_LENGTH + BASE_LENGTH + this.name.getDataLength();
}
//VALIDATE
public boolean isSignatureValid()
{
byte[] data = new byte[0];
//WRITE TYPE
byte[] typeBytes = Ints.toByteArray(UPDATE_NAME_TRANSACTION);
typeBytes = Bytes.ensureCapacity(typeBytes, TYPE_LENGTH, 0);
data = Bytes.concat(data, typeBytes);
//WRITE TIMESTAMP
byte[] timestampBytes = Longs.toByteArray(this.timestamp);
timestampBytes = Bytes.ensureCapacity(timestampBytes, TIMESTAMP_LENGTH, 0);
data = Bytes.concat(data, timestampBytes);
//WRITE REFERENCE
data = Bytes.concat(data, this.reference);
//WRITE OWNER
data = Bytes.concat(data, this.owner.getPublicKey());
//WRITE NAME
data = Bytes.concat(data , this.name.toBytes());
//WRITE FEE
byte[] feeBytes = this.fee.unscaledValue().toByteArray();
byte[] fill = new byte[FEE_LENGTH - feeBytes.length];
feeBytes = Bytes.concat(fill, feeBytes);
data = Bytes.concat(data, feeBytes);
return Crypto.getInstance().verify(this.owner.getPublicKey(), this.signature, data);
}
@Override
public int isValid(DBSet db)
{
//CHECK NAME LENGTH
int nameLength = this.name.getName().getBytes(StandardCharsets.UTF_8).length;
if(nameLength > 400 || nameLength < 1)
{
return INVALID_NAME_LENGTH;
}
//CHECK VALUE LENGTH
int valueLength = this.name.getValue().getBytes(StandardCharsets.UTF_8).length;
if(valueLength > 4000 || valueLength < 1)
{
return INVALID_VALUE_LENGTH;
}
//CHECK OWNER
if(!Crypto.getInstance().isValidAddress(this.name.getOwner().getAddress()))
{
return INVALID_ADDRESS;
}
//CHECK IF NAME EXISTS
if(!db.getNameMap().contains(this.name))
{
return NAME_DOES_NOT_EXIST;
}
//CHECK IF NAMESALE EXISTS
if(db.getNameExchangeMap().contains(this.name.getName()))
{
return NAME_ALREADY_FOR_SALE;
}
//CHECK IF OWNER IS OWNER
if(!db.getNameMap().get(this.name.getName()).getOwner().getAddress().equals(this.owner.getAddress()))
{
return INVALID_NAME_OWNER;
}
//CHECK IF REGISTRANT HAS ENOUGH MONEY
if(this.owner.getBalance(1, db).compareTo(this.fee) == -1)
{
return NO_BALANCE;
}
//CHECK IF REFERENCE IS OKE
if(!Arrays.equals(this.owner.getLastReference(db), this.reference))
{
return INVALID_REFERENCE;
}
//CHECK IF FEE IS POSITIVE
if(this.fee.compareTo(BigDecimal.ZERO) <= 0)
{
return NEGATIVE_FEE;
}
return VALIDATE_OKE;
}
//PROCESS/ORPHAN
@Override
public void process(DBSet db)
{
//UPDATE OWNER
this.owner.setConfirmedBalance(this.owner.getConfirmedBalance(db).subtract(this.fee), db);
//UPDATE REFERENCE OF OWNER
this.owner.setLastReference(this.signature, db);
//SET ORPHAN DATA
Name oldName = db.getNameMap().get(this.name.getName());
db.getUpdateNameMap().set(this, oldName);
//INSERT INTO DATABASE
db.getNameMap().add(this.name);
}
@Override
public void orphan(DBSet db)
{
//UPDATE OWNER
this.owner.setConfirmedBalance(this.owner.getConfirmedBalance(db).add(this.fee), db);
//UPDATE REFERENCE OF OWNER
this.owner.setLastReference(this.reference, db);
//RESTORE ORPHAN DATA
Name oldName = db.getUpdateNameMap().get(this);
db.getNameMap().add(oldName);
//DELETE ORPHAN DATA
db.getUpdateNameMap().delete(this);
}
@Override
public Account getCreator()
{
return this.owner;
}
@Override
public List<Account> getInvolvedAccounts()
{
List<Account> accounts = new ArrayList<Account>();
accounts.add(this.owner);
accounts.add(this.name.getOwner());
return accounts;
}
@Override
public boolean isInvolved(Account account)
{
String address = account.getAddress();
if(address.equals(this.owner.getAddress()) || address.equals(this.name.getOwner().getAddress()))
{
return true;
}
return false;
}
@Override
public BigDecimal getAmount(Account account)
{
if(account.getAddress().equals(this.owner.getAddress()))
{
return BigDecimal.ZERO.setScale(8).subtract(this.fee);
}
return BigDecimal.ZERO;
}
public static byte[] generateSignature(DBSet db, PrivateKeyAccount owner, Name name, BigDecimal fee, long timestamp)
{
byte[] data = new byte[0];
//WRITE TYPE
byte[] typeBytes = Ints.toByteArray(UPDATE_NAME_TRANSACTION);
typeBytes = Bytes.ensureCapacity(typeBytes, TYPE_LENGTH, 0);
data = Bytes.concat(data, typeBytes);
//WRITE TIMESTAMP
byte[] timestampBytes = Longs.toByteArray(timestamp);
timestampBytes = Bytes.ensureCapacity(timestampBytes, TIMESTAMP_LENGTH, 0);
data = Bytes.concat(data, timestampBytes);
//WRITE REFERENCE
data = Bytes.concat(data, owner.getLastReference(db));
//WRITE OWNER
data = Bytes.concat(data, owner.getPublicKey());
//WRITE NAME
data = Bytes.concat(data , name.toBytes());
//WRITE FEE
byte[] feeBytes = fee.unscaledValue().toByteArray();
byte[] fill = new byte[FEE_LENGTH - feeBytes.length];
feeBytes = Bytes.concat(fill, feeBytes);
data = Bytes.concat(data, feeBytes);
return Crypto.getInstance().sign(owner, data);
}
}
