Advanced Features

async function monitorTransaction(
  client: MaciClient,
  txHash: string
): Promise<void> {
  let confirmed = false;
  let attempts = 0;
  const maxAttempts = 30;
  
  while (!confirmed && attempts < maxAttempts) {
    try {
      const tx = await client.indexer.getTransactionByHash(txHash);
      
      if (tx.success) {
        console.log('Transaction confirmed');
        console.log(`Block height: ${tx.height}`);
        console.log(`Gas used: ${tx.gasUsed}`);
        confirmed = true;
      } else {
        console.log('Transaction failed');
        break;
      }
    } catch (error) {
      await new Promise(resolve => setTimeout(resolve, 2000));
      attempts++;
    }
  }
}

async function retryTransaction<T>(
  fn: () => Promise<T>,
  maxRetries: number = 3,
  delay: number = 1000
): Promise<T> {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (i < maxRetries - 1) {
        await new Promise(resolve => setTimeout(resolve, delay * (i + 1)));
      } else {
        throw error;
      }
    }
  }
  throw new Error('Max retries exceeded');
}
 
// Usage
const round = await retryTransaction(() =>
  client.createAMaciRound({
    operator: operator.address,
    /* other parameters */
  })
);

async function batchGetRounds(
  client: MaciClient,
  contractAddresses: string[]
): Promise<Round[]> {
  const promises = contractAddresses.map(addr =>
    client.getRoundInfo({ contractAddress: addr }).catch(error => {
      console.error(`Failed to get ${addr}:`, error.message);
      return null;
    })
  );
  
  const results = await Promise.all(promises);
  return results.filter(r => r !== null) as Round[];
}

async function batchVote(
  client: MaciClient,
  wallet: any,
  address: string,
  rounds: Array<{
    contractAddress: string;
    options: { idx: number; vc: number }[];
  }>
): Promise<void> {
  for (const round of rounds) {
    try {
      await completeVotingProcess(
        client,
        wallet,
        address,
        round.contractAddress,
        round.options
      );
    } catch (error) {
      console.error(`Vote failed for ${round.contractAddress}:`, error.message);
    }
  }
}

import { MaciClient } from '@dorafactory/maci-sdk';
 
const customClient = new MaciClient({
  network: 'testnet',
  rpcEndpoint: 'https://custom-rpc.example.com',
  chainId: 'custom-chain-1',
  gasPrice: '0.025udora',
  registryAddress: 'dora1customregistry...'
});

class MultiNetworkClient {
  private clients: Map<string, MaciClient> = new Map();
  
  getClient(network: 'mainnet' | 'testnet' | 'local'): MaciClient {
    if (!this.clients.has(network)) {
      this.clients.set(network, new MaciClient({ network }));
    }
    return this.clients.get(network)!;
  }
  
  async getRoundOnAnyNetwork(contractAddress: string) {
    for (const network of ['mainnet', 'testnet', 'local'] as const) {
      try {
        const client = this.getClient(network);
        const round = await client.getRoundInfo({ contractAddress });
        return { network, round };
      } catch (error) {
        continue;
      }
    }
    throw new Error('Round not found on any network');
  }
}

async function estimateGas(
  client: MaciClient,
  operation: 'signup' | 'vote' | 'createRound'
): Promise<number> {
  const gasEstimates = {
    signup: 200000,
    vote: 150000,
    createRound: 500000
  };
  
  return gasEstimates[operation];
}

async function optimizedTransaction<T>(
  client: MaciClient,
  txFn: () => Promise<T>,
  useGasStation: boolean = true
): Promise<T> {
  if (useGasStation) {
    return await txFn();
  } else {
    // Pay gas yourself, can dynamically adjust price based on network conditions
    return await txFn();
  }
}

class MaciError extends Error {
  constructor(
    message: string,
    public code: string,
    public details?: any
  ) {
    super(message);
    this.name = 'MaciError';
  }
}
 
async function handleMaciOperation<T>(
  operation: () => Promise<T>
): Promise<T> {
  try {
    return await operation();
  } catch (error: any) {
    if (error.message.includes('insufficient funds')) {
      throw new MaciError('Insufficient balance', 'INSUFFICIENT_FUNDS', error);
    } else if (error.message.includes('not in voting period')) {
      throw new MaciError('Not in voting period', 'NOT_IN_VOTING_PERIOD', error);
    } else if (error.message.includes('already signed up')) {
      throw new MaciError('Already signed up', 'ALREADY_SIGNED_UP', error);
    } else {
      throw new MaciError('Operation failed', 'UNKNOWN_ERROR', error);
    }
  }
}
 
// Usage
try {
  await handleMaciOperation(() =>
    client.maci.signup({ /* parameters */ })
  );
} catch (error) {
  if (error instanceof MaciError) {
    console.error(`Error [${error.code}]: ${error.message}`);
  }
}

class RoundWatcher {
  private intervals: Map<string, NodeJS.Timeout> = new Map();
  
  watch(
    client: MaciClient,
    contractAddress: string,
    callback: (status: string) => void,
    interval: number = 10000
  ): void {
    let lastStatus: string | null = null;
    
    const checkStatus = async () => {
      try {
        const round = await client.getRoundInfo({ contractAddress });
        
        if (round.status !== lastStatus) {
          lastStatus = round.status;
          callback(round.status);
        }
      } catch (error) {
        console.error('Status check failed:', error);
      }
    };
    
    checkStatus();
    
    const timer = setInterval(checkStatus, interval);
    this.intervals.set(contractAddress, timer);
  }
  
  unwatch(contractAddress: string): void {
    const timer = this.intervals.get(contractAddress);
    if (timer) {
      clearInterval(timer);
      this.intervals.delete(contractAddress);
    }
  }
  
  unwatchAll(): void {
    for (const timer of this.intervals.values()) {
      clearInterval(timer);
    }
    this.intervals.clear();
  }
}
 
// Usage
const watcher = new RoundWatcher();
 
watcher.watch(client, 'dora1contract...', (status) => {
  console.log(`Round status changed: ${status}`);
  
  if (status === 'Tallied') {
    watcher.unwatch('dora1contract...');
  }
});

function timestampToDate(timestamp: number): Date {
  return new Date(timestamp * 1000);
}
 
function dateToTimestamp(date: Date): number {
  return Math.floor(date.getTime() / 1000);
}
 
function formatVotingTime(votingTime: VotingTime): string {
  const start = timestampToDate(votingTime.startTime);
  const end = timestampToDate(votingTime.endTime);
  
  return `${start.toLocaleString()} - ${end.toLocaleString()}`;
}

function calculateMaxVotes(voiceCredits: number, isQV: boolean): number {
  if (isQV) {
    return Math.floor(Math.sqrt(voiceCredits));
  } else {
    return voiceCredits;
  }
}
 
function calculateVoteCost(
  votes: { idx: number; vc: number }[],
  isQV: boolean
): number {
  return votes.reduce((sum, vote) => {
    return sum + (isQV ? vote.vc * vote.vc : vote.vc);
  }, 0);
}
 
function validateVotes(
  votes: { idx: number; vc: number }[],
  voiceCredits: number,
  isQV: boolean
): { valid: boolean; error?: string } {
  const cost = calculateVoteCost(votes, isQV);
  
  if (cost > voiceCredits) {
    return {
      valid: false,
      error: `Cost (${cost}) exceeds available credits (${voiceCredits})`
    };
  }
  
  return { valid: true };
}

class RequestDeduplicator {
  private pending: Map<string, Promise<any>> = new Map();
  
  async deduplicate<T>(
    key: string,
    fn: () => Promise<T>
  ): Promise<T> {
    if (this.pending.has(key)) {
      return this.pending.get(key);
    }
    
    const promise = fn().finally(() => {
      this.pending.delete(key);
    });
    
    this.pending.set(key, promise);
    return promise;
  }
}
 
const dedup = new RequestDeduplicator();
 
// Even with concurrent calls, only one request is sent
const [round1, round2, round3] = await Promise.all([
  dedup.deduplicate('round:dora1...', () => client.getRoundById('dora1...')),
  dedup.deduplicate('round:dora1...', () => client.getRoundById('dora1...')),
  dedup.deduplicate('round:dora1...', () => client.getRoundById('dora1...'))
]);