@erc7824/nitrolite
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The Nitrolite SDK empowers developers to build high-performance, scalable web3 applications using state channels. It's designed to provide near-instant transactions and significantly improved user experiences by minimizing direct blockchain interactions.
139 lines (138 loc) • 6.25 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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var __importStar = (this && this.__importStar) || (function () {
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})();
Object.defineProperty(exports, "__esModule", { value: true });
exports._prepareAndSignInitialState = _prepareAndSignInitialState;
exports._prepareAndSignChallengeState = _prepareAndSignChallengeState;
exports._prepareAndSignResizeState = _prepareAndSignResizeState;
exports._prepareAndSignFinalState = _prepareAndSignFinalState;
const viem_1 = require("viem");
const Errors = __importStar(require("../errors"));
const utils_1 = require("../utils");
const signer_1 = require("./signer");
const types_1 = require("./types");
async function _prepareAndSignInitialState(deps, params) {
const { channel, unsignedInitialState, serverSignature } = params;
if (!unsignedInitialState) {
throw new Errors.MissingParameterError('Initial state is required for creating the channel');
}
if (!unsignedInitialState.data) {
throw new Errors.MissingParameterError('State data is required for creating the channel');
}
if (!unsignedInitialState.allocations || unsignedInitialState.allocations.length !== 2) {
throw new Errors.InvalidParameterError('Initial allocation amounts must be provided for both participants.');
}
if (unsignedInitialState.allocations[0].amount !== 0n) {
throw new Errors.InvalidParameterError('Initial allocation amount for the first participant must be zero.');
}
if (!channel) {
throw new Errors.MissingParameterError("Channel's fixed part is required for creating the channel");
}
if (!channel?.adjudicator) {
throw new Errors.MissingParameterError('Adjudicator address is required for creating the channel');
}
if (!channel.participants || channel.participants.length !== 2) {
throw new Errors.InvalidParameterError('Channel must have exactly two participants.');
}
const signer = _checkParticipantAndGetSigner(deps, channel.participants[0]);
const channelId = (0, utils_1.getChannelId)(channel, deps.chainId);
const accountSignature = await signer.signState(channelId, unsignedInitialState);
const signedInitialState = {
...unsignedInitialState,
sigs: [accountSignature, serverSignature],
};
return { initialState: signedInitialState, channelId };
}
async function _prepareAndSignChallengeState(deps, params) {
const { channelId, candidateState, proofStates = [] } = params;
const challengeMsg = (0, utils_1.getPackedChallengeState)(channelId, candidateState);
const signer = await _fetchParticipantAndGetSigner(deps, channelId);
const challengerSig = await signer.signRawMessage(challengeMsg);
return { channelId, candidateState, proofs: proofStates, challengerSig };
}
async function _prepareAndSignResizeState(deps, params) {
const { resizeState, proofStates } = params;
if (!resizeState.data) {
throw new Errors.MissingParameterError('State data is required for closing the channel.');
}
const channelId = resizeState.channelId;
const stateToSign = {
data: resizeState.data,
intent: resizeState.intent,
allocations: resizeState.allocations,
version: resizeState.version,
sigs: [],
};
const signer = await _fetchParticipantAndGetSigner(deps, channelId);
const accountSignature = await signer.signState(channelId, stateToSign);
const resizeStateWithSigs = {
...stateToSign,
sigs: [accountSignature, resizeState.serverSignature],
};
let proofs = [...proofStates];
return { resizeStateWithSigs, proofs, channelId };
}
async function _prepareAndSignFinalState(deps, params) {
const { stateData, finalState } = params;
if (!stateData) {
throw new Errors.MissingParameterError('State data is required for closing the channel.');
}
const channelId = finalState.channelId;
const stateToSign = {
data: stateData,
intent: types_1.StateIntent.FINALIZE,
allocations: finalState.allocations,
version: finalState.version,
sigs: [],
};
const signer = await _fetchParticipantAndGetSigner(deps, channelId);
const accountSignature = await signer.signState(channelId, stateToSign);
const finalStateWithSigs = {
...stateToSign,
sigs: [accountSignature, finalState.serverSignature],
};
return { finalStateWithSigs, channelId };
}
async function _fetchParticipantAndGetSigner(deps, channelId) {
const { channel: { participants } } = await deps.nitroliteService.getChannelData(channelId);
let participant = participants.length == 2 ? participants[0] : viem_1.zeroAddress;
return _checkParticipantAndGetSigner(deps, participant);
}
function _checkParticipantAndGetSigner(deps, participant) {
let signer = deps.stateSigner;
if (participant == deps.walletClient.account.address) {
signer = new signer_1.WalletStateSigner(deps.walletClient);
}
return signer;
}