/**
 * Aave v3: Pool discovery using PoolAddressesProvider
 * 
 * This example demonstrates how to discover the Aave Pool address
 * using the PoolAddressesProvider service discovery pattern.
 * This is the recommended way to get the Pool address in production.
 */

import { createRpcClient } from '../../src/utils/chain-config.js';
import { getAavePoolAddressesProvider } from '../../src/utils/addresses.js';

const CHAIN_ID = 1; // Mainnet

// PoolAddressesProvider ABI
const ADDRESSES_PROVIDER_ABI = [
  {
    name: 'getPool',
    type: 'function',
    stateMutability: 'view',
    inputs: [],
    outputs: [{ name: '', type: 'address' }],
  },
  {
    name: 'getPoolDataProvider',
    type: 'function',
    stateMutability: 'view',
    inputs: [],
    outputs: [{ name: '', type: 'address' }],
  },
  {
    name: 'getPriceOracle',
    type: 'function',
    stateMutability: 'view',
    inputs: [],
    outputs: [{ name: '', type: 'address' }],
  },
] as const;

async function discoverPool() {
  const publicClient = createRpcClient(CHAIN_ID);
  const addressesProvider = getAavePoolAddressesProvider(CHAIN_ID);

  console.log('Discovering Aave v3 Pool addresses...');
  console.log(`Chain ID: ${CHAIN_ID}`);
  console.log(`PoolAddressesProvider: ${addressesProvider}\n`);

  // Get Pool address
  const poolAddress = await publicClient.readContract({
    address: addressesProvider,
    abi: ADDRESSES_PROVIDER_ABI,
    functionName: 'getPool',
  });

  console.log(`✅ Pool: ${poolAddress}`);

  // Get PoolDataProvider address (for querying reserves, user data, etc.)
  try {
    const dataProviderAddress = await publicClient.readContract({
      address: addressesProvider,
      abi: ADDRESSES_PROVIDER_ABI,
      functionName: 'getPoolDataProvider',
    });
    console.log(`✅ PoolDataProvider: ${dataProviderAddress}`);
  } catch (error) {
    console.log('⚠️  PoolDataProvider not available (may be using different method)');
  }

  // Get PriceOracle address
  try {
    const priceOracleAddress = await publicClient.readContract({
      address: addressesProvider,
      abi: ADDRESSES_PROVIDER_ABI,
      functionName: 'getPriceOracle',
    });
    console.log(`✅ PriceOracle: ${priceOracleAddress}`);
  } catch (error) {
    console.log('⚠️  PriceOracle not available (may be using different method)');
  }

  console.log('\n✅ Pool discovery completed!');
  console.log('\nUse the Pool address for all Aave v3 operations:');
  console.log(`  - supply(address asset, uint256 amount, address onBehalfOf, uint16 referralCode)`);
  console.log(`  - withdraw(address asset, uint256 amount, address to)`);
  console.log(`  - borrow(address asset, uint256 amount, uint256 interestRateMode, uint16 referralCode, address onBehalfOf)`);
  console.log(`  - repay(address asset, uint256 amount, uint256 rateMode, address onBehalfOf)`);
  console.log(`  - flashLoanSimple(address receiverAddress, address asset, uint256 amount, bytes params, uint16 referralCode)`);
  console.log(`  - flashLoan(address receiverAddress, address[] assets, uint256[] amounts, uint256[] modes, address onBehalfOf, bytes params, uint16 referralCode)`);
}

// Run if executed directly
if (import.meta.url === `file://${process.argv[1]}`) {
  discoverPool().catch(console.error);
}

export { discoverPool };