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createMemoString,
serializeStacksMessage,
deserializeMemoString,
codeBodyString,
MemoString,
} from './types';
import {
Address,
ClarityValue,
COINBASE_BUFFER_LENGTH_BYTES,
createAddress,
createLPString,
deserializeAddress,
deserializeCV,
deserializeLPString,
LengthPrefixedString,
principalCV,
PrincipalCV,
serializeCV,
StacksMessageType,
} from 'micro-stacks/clarity';
import {
BufferArray,
BufferReader,
writeUInt32BE,
IntegerType,
intToBigInt,
intToBytes,
} from 'micro-stacks/common';
export type Payload =
| TokenTransferPayload
| ContractCallPayload
| SmartContractPayload
| PoisonPayload
| CoinbasePayload;
export enum PayloadType {
TokenTransfer = 0x00,
SmartContract = 0x01,
ContractCall = 0x02,
PoisonMicroblock = 0x03,
Coinbase = 0x04,
}
export interface TokenTransferPayload {
readonly type: StacksMessageType.Payload;
readonly payloadType: PayloadType.TokenTransfer;
readonly recipient: PrincipalCV;
readonly amount: bigint;
readonly memo: MemoString;
}
export type PayloadInput =
| (TokenTransferPayload | (Omit<TokenTransferPayload, 'amount'> & { amount: IntegerType }))
| ContractCallPayload
| SmartContractPayload
| PoisonPayload
| CoinbasePayload;
export function createTokenTransferPayload(
recipient: string | PrincipalCV,
amount: IntegerType,
memo?: string | MemoString
): TokenTransferPayload {
if (typeof recipient === 'string') {
recipient = principalCV(recipient);
}
if (typeof memo === 'string') {
memo = createMemoString(memo);
}
return {
type: StacksMessageType.Payload,
payloadType: PayloadType.TokenTransfer,
recipient,
amount: intToBigInt(amount, false),
memo: memo ?? createMemoString(''),
};
}
export interface ContractCallPayload {
readonly type: StacksMessageType.Payload;
readonly payloadType: PayloadType.ContractCall;
readonly contractAddress: Address;
readonly contractName: LengthPrefixedString;
readonly functionName: LengthPrefixedString;
readonly functionArgs: ClarityValue[];
}
export function createContractCallPayload(
contractAddress: string | Address,
contractName: string | LengthPrefixedString,
functionName: string | LengthPrefixedString,
functionArgs: ClarityValue[]
): ContractCallPayload {
if (typeof contractAddress === 'string') {
contractAddress = createAddress(contractAddress);
}
if (typeof contractName === 'string') {
contractName = createLPString(contractName);
}
if (typeof functionName === 'string') {
functionName = createLPString(functionName);
}
return {
type: StacksMessageType.Payload,
payloadType: PayloadType.ContractCall,
contractAddress,
contractName,
functionName,
functionArgs,
};
}
export interface SmartContractPayload {
readonly type: StacksMessageType.Payload;
readonly payloadType: PayloadType.SmartContract;
readonly contractName: LengthPrefixedString;
readonly codeBody: LengthPrefixedString;
}
export function createSmartContractPayload(
contractName: string | LengthPrefixedString,
codeBody: string | LengthPrefixedString
): SmartContractPayload {
if (typeof contractName === 'string') {
contractName = createLPString(contractName);
}
if (typeof codeBody === 'string') {
codeBody = codeBodyString(codeBody);
}
return {
type: StacksMessageType.Payload,
payloadType: PayloadType.SmartContract,
contractName,
codeBody,
};
}
export interface PoisonPayload {
readonly type: StacksMessageType.Payload;
readonly payloadType: PayloadType.PoisonMicroblock;
}
export function createPoisonPayload(): PoisonPayload {
return { type: StacksMessageType.Payload, payloadType: PayloadType.PoisonMicroblock };
}
export interface CoinbasePayload {
readonly type: StacksMessageType.Payload;
readonly payloadType: PayloadType.Coinbase;
readonly coinbaseBuffer: Uint8Array;
}
export function createCoinbasePayload(coinbaseBuffer: Uint8Array): CoinbasePayload {
Iif (coinbaseBuffer.byteLength != COINBASE_BUFFER_LENGTH_BYTES) {
throw Error(`Coinbase buffer size must be ${COINBASE_BUFFER_LENGTH_BYTES} bytes`);
}
return { type: StacksMessageType.Payload, payloadType: PayloadType.Coinbase, coinbaseBuffer };
}
export function serializePayload(payload: PayloadInput): Uint8Array {
const bufferArray: BufferArray = new BufferArray();
bufferArray.appendByte(payload.payloadType);
switch (payload.payloadType) {
case PayloadType.TokenTransfer:
bufferArray.push(serializeCV(payload.recipient));
bufferArray.push(intToBytes(payload.amount, false, 8));
bufferArray.push(serializeStacksMessage(payload.memo));
break;
case PayloadType.ContractCall:
bufferArray.push(serializeStacksMessage(payload.contractAddress));
bufferArray.push(serializeStacksMessage(payload.contractName));
bufferArray.push(serializeStacksMessage(payload.functionName));
const numArgs = new Uint8Array(4);
writeUInt32BE(numArgs, payload.functionArgs.length, 0);
bufferArray.push(numArgs);
payload.functionArgs.forEach(arg => {
bufferArray.push(serializeCV(arg));
});
break;
case PayloadType.SmartContract:
bufferArray.push(serializeStacksMessage(payload.contractName));
bufferArray.push(serializeStacksMessage(payload.codeBody));
break;
case PayloadType.PoisonMicroblock:
// TODO: implement
break;
case PayloadType.Coinbase:
bufferArray.push(payload.coinbaseBuffer);
break;
}
return bufferArray.concatBuffer();
}
export function deserializePayload(bufferReader: BufferReader): Payload {
const payloadType = bufferReader.readUInt8Enum(PayloadType, n => {
throw new Error(`Cannot recognize PayloadType: ${n}`);
});
switch (payloadType) {
case PayloadType.TokenTransfer:
const recipient = deserializeCV(bufferReader) as PrincipalCV;
const amount = intToBigInt(bufferReader.readBuffer(8), false);
const memo = deserializeMemoString(bufferReader);
return createTokenTransferPayload(recipient, amount, memo);
case PayloadType.ContractCall:
const contractAddress = deserializeAddress(bufferReader);
const contractCallName = deserializeLPString(bufferReader);
const functionName = deserializeLPString(bufferReader);
const functionArgs = [];
const numberOfArgs = bufferReader.readUInt32BE();
for (let i = 0; i < numberOfArgs; i++) {
const clarityValue = deserializeCV(bufferReader);
functionArgs.push(clarityValue);
}
return createContractCallPayload(
contractAddress,
contractCallName,
functionName,
functionArgs
);
case PayloadType.SmartContract:
const smartContractName = deserializeLPString(bufferReader);
const codeBody = deserializeLPString(bufferReader, 4, 100000);
return createSmartContractPayload(smartContractName, codeBody);
case PayloadType.PoisonMicroblock:
// TODO: implement
return createPoisonPayload();
case PayloadType.Coinbase:
const coinbaseBuffer = bufferReader.readBuffer(COINBASE_BUFFER_LENGTH_BYTES);
return createCoinbasePayload(coinbaseBuffer);
}
}
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