@iota-big3/sdk-blockchain
Version:
Comprehensive blockchain integration platform with multi-chain support, smart contracts, DeFi protocols, NFT infrastructure, Bitcoin support, and seamless SDK ecosystem integration for IOTA Big3
543 lines • 23.1 kB
JavaScript
"use strict";
/**
* @iota-big3/sdk-blockchain - Smart Contract Manager
* Smart contract deployment and interaction
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.SmartContractManager = void 0;
const ethers_1 = require("ethers");
const events_1 = require("events");
const provider_factory_1 = require("../chains/provider-factory");
// Feature flag for real contract operations
const USE_REAL_CONTRACTS = process.env.BLOCKCHAIN_USE_REAL_CONTRACTS === 'true';
class SmartContractManager extends events_1.EventEmitter {
constructor(config = {}) {
super();
this.isEnabled = true;
this.contracts = new Map();
this.eventListeners = new Map();
this.contractInstances = new Map();
// eslint-disable-next-line @typescript-eslint/no-explicit-any
this.provider = null;
this.isEnabled = config.enabled ?? true;
}
async initialize() {
if (USE_REAL_CONTRACTS) {
try {
// Get provider from environment or create default
const rpcUrl = process.env.BLOCKCHAIN_RPC_URL || 'https://mainnet.infura.io/v3/';
this.provider = await provider_factory_1.ProviderFactory.createProvider(1, rpcUrl, {
timeout: 10000,
fallbackToMock: true
});
}
catch (error) {
console.warn('Failed to initialize real provider, using mock:', error);
this.provider = null;
}
}
this.emit('initialized', {
type: 'initialized',
data: { mode: USE_REAL_CONTRACTS ? 'real' : 'mock' },
timestamp: new Date()
});
}
async deployContract(deployment) {
try {
// Validate bytecode
if (!deployment.bytecode || !deployment.bytecode.startsWith('0x')) {
throw new Error('Invalid bytecode');
}
let contract;
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
// Real deployment using ethers.js
const contractFactory = new ethers_1.ethers.ContractFactory(deployment.abi, deployment.bytecode, await this.provider.getSigner());
const deploymentArgs = deployment.constructorArgs || [];
const deployTx = await contractFactory.deploy(...deploymentArgs, {
gasLimit: deployment.gasLimit
});
const receipt = await deployTx.waitForDeployment();
const address = await receipt.getAddress();
contract = {
address,
abi: deployment.abi,
deploymentTransaction: {
hash: deployTx.deploymentTransaction()?.hash || '',
blockNumber: receipt.deploymentTransaction()?.blockNumber || 0
},
createdAt: new Date(),
name: 'Contract',
symbol: 'N/A',
// eslint-disable-next-line @typescript-eslint/no-explicit-any
owner: await this.provider.getSigner().then((s) => s.getAddress()),
verified: false
};
// Store contract instance
this.contractInstances.set(address, receipt);
}
else {
// Mock deployment
const address = `0x${Array(40).fill(0).map(() => Math.floor(Math.random() * 16).toString(16)).join('')}`;
contract = {
address,
abi: deployment.abi,
deploymentTransaction: {
hash: `0x${'a'.repeat(64)}`,
blockNumber: Math.floor(Math.random() * 1000000) + 15000000
},
createdAt: new Date(),
name: 'Mock Contract',
symbol: 'MOCK',
owner: '0x0000000000000000000000000000000000000000',
verified: false
};
}
this.contracts.set(contract.address, contract);
this.emit('contract:deployed', {
type: 'contract:deployed',
data: contract,
timestamp: new Date()
});
return contract;
}
catch (error) {
this.emit('error', {
type: 'error',
data: { error: error instanceof Error ? error.message : 'Deployment failed' },
timestamp: new Date()
});
throw error;
}
}
async callContract(address, method,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
args = []) {
const contract = this.contracts.get(address);
if (!contract) {
throw new Error(`Contract ${address} not found`);
}
try {
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
// Real contract call
let contractInstance = this.contractInstances.get(address);
if (!contractInstance) {
contractInstance = new ethers_1.ethers.Contract(address, contract.abi, this.provider);
this.contractInstances.set(address, contractInstance);
}
// Use interface for type-safe calls
const iface = contractInstance.interface;
const fragment = iface.getFunction(method);
if (!fragment) {
throw new Error(`Method ${method} not found in contract ABI`);
}
// Encode the function call
const data = iface.encodeFunctionData(method, args);
// Make the call
const result = await this.provider.call({
to: address,
data
});
// Decode the result
return iface.decodeFunctionResult(method, result);
}
else {
// Mock implementation - return sample data based on method
const mockResults = {
name: 'Mock Token',
symbol: 'MOCK',
decimals: 18,
totalSupply: '1000000000000000000',
balanceOf: '1000000000000000000',
owner: '0x0000000000000000000000000000000000000000',
paused: false
};
return mockResults[method] || `Mock result for ${method}`;
}
}
catch (error) {
this.emit('error', {
type: 'error',
data: {
error: error instanceof Error ? error.message : 'Call failed',
contract: address,
method
},
timestamp: new Date()
});
throw error;
}
}
async sendTransaction(address, method,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
args = [], options = {}) {
const contract = this.contracts.get(address);
if (!contract) {
throw new Error(`Contract ${address} not found`);
}
let receipt;
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
// Real transaction
let contractInstance = this.contractInstances.get(address);
if (!contractInstance) {
const signer = await this.provider.getSigner();
contractInstance = new ethers_1.ethers.Contract(address, contract.abi, signer);
this.contractInstances.set(address, contractInstance);
}
// Use interface to encode the transaction
const iface = contractInstance.interface;
const fragment = iface.getFunction(method);
if (!fragment) {
throw new Error(`Method ${method} not found in contract ABI`);
}
// Encode function data
const data = iface.encodeFunctionData(method, args);
// Send transaction through signer
const signer = await this.provider.getSigner();
const tx = await signer.sendTransaction({
to: address,
data,
gasLimit: options.gasLimit,
value: options.value
});
const txReceipt = await tx.wait();
if (!txReceipt) {
throw new Error('Transaction receipt not received');
}
receipt = {
transactionHash: txReceipt.hash,
blockNumber: txReceipt.blockNumber,
blockHash: txReceipt.blockHash,
gasUsed: BigInt(txReceipt.gasUsed.toString()),
effectiveGasPrice: BigInt(txReceipt.gasPrice?.toString() || '0'),
status: txReceipt.status === 1 ? 1 : 0,
from: txReceipt.from,
to: txReceipt.to || undefined,
// eslint-disable-next-line @typescript-eslint/no-explicit-any
logs: txReceipt.logs,
contractAddress: undefined
};
}
else {
// Mock transaction receipt
receipt = {
transactionHash: `0x${'b'.repeat(64)}`,
blockNumber: Math.floor(Math.random() * 1000000) + 15000000,
blockHash: `0x${'c'.repeat(64)}`,
gasUsed: BigInt((options.gasLimit || 100000n).toString()),
effectiveGasPrice: BigInt('20000000000'),
status: 1,
from: '0x0000000000000000000000000000000000000000',
to: address,
logs: [],
contractAddress: undefined
};
}
this.emit('transaction:sent', {
type: 'transaction:sent',
data: receipt,
timestamp: new Date()
});
return receipt;
}
async listenToEvents(filter, callback) {
const listenerId = `${filter.address}_${filter.event}_${Date.now()}`;
const listener = {
id: listenerId,
filter,
callback,
active: true
};
this.eventListeners.set(listenerId, listener);
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
// Real event listening
const contract = this.contracts.get(filter.address);
if (contract) {
let contractInstance = this.contractInstances.get(filter.address);
if (!contractInstance) {
contractInstance = new ethers_1.ethers.Contract(filter.address, contract.abi, this.provider);
this.contractInstances.set(filter.address, contractInstance);
}
// Use event emitter pattern
const eventFragment = contractInstance.interface.getEvent(filter.event);
if (!eventFragment) {
throw new Error(`Event ${filter.event} not found in contract ABI`);
}
// Create topic filter
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const filters = contractInstance.filters;
const topicFilter = filters && filters[filter.event]
? filters[filter.event]()
: filter.event;
// Listen to events
contractInstance.on(topicFilter, (...args) => {
const eventLog = args[args.length - 1];
const event = {
address: filter.address,
blockNumber: eventLog.blockNumber,
transactionHash: eventLog.transactionHash,
transactionIndex: eventLog.transactionIndex,
blockHash: eventLog.blockHash,
logIndex: eventLog.index,
removed: eventLog.removed || false,
id: `${eventLog.transactionHash}_${eventLog.index}`,
returnValues: Object.fromEntries(eventFragment.inputs.map((input, i) => [input.name, args[i]])),
event: filter.event,
signature: eventFragment.format('sighash'),
raw: {
data: eventLog.data || '0x',
topics: eventLog.topics || []
}
};
callback(event);
this.emit('event:received', event);
});
}
}
else {
// Mock event emission after a delay
setTimeout(() => {
const mockEvent = {
address: filter.address,
blockNumber: Math.floor(Math.random() * 1000000) + 15000000,
transactionHash: `0x${'d'.repeat(64)}`,
transactionIndex: 0,
blockHash: `0x${'e'.repeat(64)}`,
logIndex: 0,
removed: false,
id: `${filter.address}_${filter.event}_${Date.now()}`,
returnValues: {
from: '0x0000000000000000000000000000000000000000',
to: '0x742d35Cc6634C0532925a3b844Bc9e7595f6933f',
value: '1000000000000000000'
},
event: filter.event,
signature: `${filter.event}(address,address,uint256)`,
raw: {
data: '0x',
topics: []
}
};
if (listener.active) {
callback(mockEvent);
this.emit('event:received', mockEvent);
}
}, 50);
}
return listener;
}
async removeEventListener(listener) {
const storedListener = this.eventListeners.get(listener.id);
if (storedListener) {
storedListener.active = false;
this.eventListeners.delete(listener.id);
if (USE_REAL_CONTRACTS && this.provider) {
// Remove real event listener
const contractInstance = this.contractInstances.get(listener.filter.address);
if (contractInstance) {
contractInstance.removeAllListeners(listener.filter.event);
}
}
}
}
async queryEvents(filter) {
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
// Real event query
const contract = this.contracts.get(filter.address);
if (!contract)
return [];
let contractInstance = this.contractInstances.get(filter.address);
if (!contractInstance) {
contractInstance = new ethers_1.ethers.Contract(filter.address, contract.abi, this.provider);
this.contractInstances.set(filter.address, contractInstance);
}
// Get event fragment
const eventFragment = contractInstance.interface.getEvent(filter.event);
if (!eventFragment) {
throw new Error(`Event ${filter.event} not found in contract ABI`);
}
// Create filter with parameters
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const filters = contractInstance.filters;
const topicFilter = filter.filter
? filters && filters[filter.event]
? filters[filter.event](...Object.values(filter.filter))
: filter.event
: filters && filters[filter.event]
? filters[filter.event]()
: filter.event;
const logs = await contractInstance.queryFilter(topicFilter, filter.fromBlock, filter.toBlock);
return logs.map(log => {
const parsedLog = contractInstance.interface.parseLog({
topics: log.topics,
data: log.data
});
return {
address: log.address,
blockNumber: log.blockNumber,
transactionHash: log.transactionHash,
transactionIndex: log.index,
blockHash: log.blockHash,
logIndex: log.index,
removed: log.removed,
id: `${log.transactionHash}_${log.index}`,
returnValues: parsedLog ? Object.fromEntries(parsedLog.fragment.inputs.map((input, i) => [input.name, parsedLog.args[i]])) : {},
event: filter.event,
signature: eventFragment.format('sighash'),
raw: {
data: log.data,
topics: log.topics
}
};
});
}
else {
// Mock implementation - return empty array
return [];
}
}
getContract(address) {
return this.contracts.get(address);
}
getAllContracts() {
return Array.from(this.contracts.values());
}
getContractMetadata(_address) {
// Mock metadata
return {
name: 'Mock Contract',
symbol: 'MOCK',
decimals: 18,
totalSupply: '1000000000000000000000000',
owner: '0x0000000000000000000000000000000000000000',
compiler: 'solc-0.8.19',
optimizer: true,
runs: 200
};
}
async estimateDeploymentGas(deployment) {
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
try {
const contractFactory = new ethers_1.ethers.ContractFactory(deployment.abi, deployment.bytecode, await this.provider.getSigner());
const deploymentArgs = deployment.constructorArgs || [];
const deployTx = await contractFactory.getDeployTransaction(...deploymentArgs);
const gasEstimate = await this.provider.estimateGas(deployTx);
return gasEstimate;
}
catch (error) {
console.warn('Gas estimation failed, using default:', error);
return 3000000n; // Default gas limit
}
}
// Mock gas estimation
return 1500000n;
}
encodeConstructor(abi, args) {
const constructorAbi = abi.find(item => item.type === 'constructor');
if (!constructorAbi)
return '0x';
const abiCoder = new ethers_1.ethers.AbiCoder();
const types = constructorAbi.inputs?.map(input => input.type) || [];
return abiCoder.encode(types, args);
}
encodeFunctionCall(abi, functionName, args) {
const functionAbi = abi.find(item => item.type === 'function' && item.name === functionName);
if (!functionAbi)
throw new Error(`Function ${functionName} not found in ABI`);
const iface = new ethers_1.ethers.Interface(abi);
return iface.encodeFunctionData(functionName, args);
}
validateABI(abi) {
if (!Array.isArray(abi)) {
throw new Error('Invalid ABI: must be an array');
}
for (const item of abi) {
if (!item.type) {
throw new Error('Invalid ABI: item missing type');
}
}
}
getFunctionSignatures(abi) {
return abi
.filter(item => item.type === 'function')
.map(item => {
const inputs = item.inputs?.map(i => i.type).join(',') || '';
return `${item.name}(${inputs})`;
});
}
getEventSignatures(abi) {
return abi
.filter(item => item.type === 'event')
.map(item => {
const inputs = item.inputs?.map(i => i.type).join(',') || '';
return `${item.name}(${inputs})`;
});
}
getContractInstance(address) {
return this.contractInstances.get(address);
}
async batchCall(address, calls) {
if (USE_REAL_CONTRACTS && this.provider && provider_factory_1.ProviderFactory.isRealProvider(this.provider)) {
const contract = this.contracts.get(address);
if (!contract)
throw new Error('Contract not found');
let contractInstance = this.contractInstances.get(address);
if (!contractInstance) {
contractInstance = new ethers_1.ethers.Contract(address, contract.abi, this.provider);
this.contractInstances.set(address, contractInstance);
}
// Use Promise.all with encoded calls
return Promise.all(calls.map(async (call) => {
const data = contractInstance.interface.encodeFunctionData(call.method, call.args);
const result = await this.provider.call({ to: address, data });
return contractInstance.interface.decodeFunctionResult(call.method, result);
}));
}
else {
// Mock batch results
return calls.map(call => `Mock result for ${call.method}`);
}
}
async reinitialize() {
this.contracts.clear();
this.eventListeners.clear();
this.contractInstances.clear();
await this.initialize();
}
async checkHealth() {
return {
isHealthy: this.isEnabled,
connectedChains: 1,
activeContracts: this.contracts.size,
lastBlockNumber: 0,
rpcLatency: 0
};
}
getMetrics() {
return {
totalTransactions: 0,
successfulTransactions: 0,
failedTransactions: 0,
averageGasUsed: '100000',
totalValueTransferred: '0',
activeWallets: 0
};
}
async shutdown() {
// Remove all event listeners
for (const contractInstance of this.contractInstances.values()) {
if (contractInstance instanceof ethers_1.ethers.Contract) {
contractInstance.removeAllListeners();
}
}
this.contracts.clear();
this.eventListeners.clear();
this.contractInstances.clear();
this.removeAllListeners();
}
// Compatibility aliases
async getHealth() {
return this.checkHealth();
}
}
exports.SmartContractManager = SmartContractManager;
//# sourceMappingURL=smart-contract-manager.js.map