const connection = new Connection('https://api.devnet.solana.com');
const signature = await connection.requestAirdrop(
  walletPublicKey,
  2 * LAMPORTS_PER_SOL
);
await connection.confirmTransaction(signature);

// TestScreen.tsx
import React, { useState } from 'react';
import { View, Text, Button, StyleSheet, ScrollView } from 'react-native';
import { transact } from '@solana-mobile/mobile-wallet-adapter-protocol-web3js';
import { PublicKey } from '@solana/web3.js';
import { toByteArray } from 'react-native-quick-base64';

const APP_IDENTITY = {
  name: 'MWA Test',
  uri: 'https://test.app',
  icon: 'favicon.ico',
};

export function TestScreen() {
  const [logs, setLogs] = useState<string[]>([]);

  const log = (message: string) => {
    const timestamp = new Date().toLocaleTimeString();
    setLogs((prev) => [...prev, `[${timestamp}] ${message}`]);
  };

  const testConnect = async () => {
    log('Iniciando transact...');
    
    try {
      await transact(async (wallet) => {
        log('Sessão estabelecida');
        
        const result = await wallet.authorize({
          identity: APP_IDENTITY,
          chain: 'solana:devnet',
        });
        
        const address = new PublicKey(
          toByteArray(result.accounts[0].address)
        );
        
        log(`Autorizado: ${address.toBase58()}`);
        log(`Auth token: ${result.auth_token.slice(0, 20)}...`);
        log(`Contas: ${result.accounts.length}`);
      });
      
      log('Sessão encerrada com sucesso');
    } catch (error) {
      log(`ERRO: ${error}`);
    }
  };

  const clearLogs = () => setLogs([]);

  return (
    <View style={styles.container}>
      <Text style={styles.title}>Teste de Conexão MWA</Text>
      
      <View style={styles.buttons}>
        <Button title="Testar Conexão" onPress={testConnect} />
        <Button title="Limpar Logs" onPress={clearLogs} />
      </View>
      
      <ScrollView style={styles.logContainer}>
        {logs.map((log, index) => (
          <Text key={index} style={styles.log}>{log}</Text>
        ))}
      </ScrollView>
    </View>
  );
}

const styles = StyleSheet.create({
  container: { flex: 1, padding: 16 },
  title: { fontSize: 20, fontWeight: 'bold', marginBottom: 16 },
  buttons: { flexDirection: 'row', gap: 8, marginBottom: 16 },
  logContainer: { flex: 1, backgroundColor: '#1a1a1a', padding: 8, borderRadius: 8 },
  log: { color: '#0f0', fontFamily: 'monospace', fontSize: 12, marginBottom: 4 },
});

// Patch Connection para logging (apenas desenvolvimento)
if (__DEV__) {
  const originalFetch = global.fetch;
  global.fetch = async (url, options) => {
    if (typeof url === 'string' && url.includes('solana')) {
      console.log('[RPC]', options?.body);
    }
    return originalFetch(url, options);
  };
}

import { 
  Connection, 
  PublicKey, 
  VersionedTransaction,
  TransactionMessage,
  SystemProgram,
} from '@solana/web3.js';

const connection = new Connection('https://api.devnet.solana.com', 'confirmed');

async function testSendTransaction(log: (msg: string) => void) {
  log('Construindo transação...');
  
  await transact(async (wallet) => {
    const result = await wallet.authorize({
      identity: APP_IDENTITY,
      chain: 'solana:devnet',
    });
    
    const publicKey = new PublicKey(
      toByteArray(result.accounts[0].address)
    );
    
    log(`Usando conta: ${publicKey.toBase58()}`);
    
    // Verificar saldo
    const balance = await connection.getBalance(publicKey);
    log(`Saldo: ${balance / 1e9} SOL`);
    
    if (balance < 0.001 * 1e9) {
      log('ERRO: Saldo insuficiente para teste');
      return;
    }
    
    // Construir transação (enviar 0.001 SOL para si mesmo)
    const { blockhash } = await connection.getLatestBlockhash();
    
    const transaction = new VersionedTransaction(
      new TransactionMessage({
        payerKey: publicKey,
        recentBlockhash: blockhash,
        instructions: [
          SystemProgram.transfer({
            fromPubkey: publicKey,
            toPubkey: publicKey, // Enviar para si mesmo
            lamports: 0.001 * 1e9,
          }),
        ],
      }).compileToV0Message()
    );
    
    log('Assinando transação...');
    
    const [signature] = await wallet.signAndSendTransactions({
      transactions: [transaction],
    });
    
    log(`Assinatura: ${signature}`);
    
    // Confirmar
    log('Aguardando confirmação...');
    const confirmation = await connection.confirmTransaction(signature, 'confirmed');
    
    if (confirmation.value.err) {
      log(`ERRO: ${JSON.stringify(confirmation.value.err)}`);
    } else {
      log('Transação confirmada!');
    }
  });
}

import nacl from 'tweetnacl';

async function testSignMessage(log: (msg: string) => void) {
  const testMessage = 'Olá do teste MWA!';
  const messageBytes = new TextEncoder().encode(testMessage);
  
  log(`Assinando mensagem: "${testMessage}"`);
  
  await transact(async (wallet) => {
    const result = await wallet.authorize({
      identity: APP_IDENTITY,
      chain: 'solana:devnet',
    });
    
    const publicKey = new PublicKey(
      toByteArray(result.accounts[0].address)
    );
    
    const signResult = await wallet.signMessages({
      addresses: [result.accounts[0].address],
      payloads: [messageBytes],
    });
    
    const signature = signResult[0];
    log(`Assinatura: ${Buffer.from(signature).toString('hex').slice(0, 40)}...`);
    
    // Verificar
    const isValid = nacl.sign.detached.verify(
      messageBytes,
      signature,
      publicKey.toBytes()
    );
    
    log(`Verificação: ${isValid ? 'APROVADO ✓' : 'FALHOU ✗'}`);
  });
}