/**
 * Chain config for CA-138, CA-651940, and public mainnets.
 * Single source of truth for chainId, RPC, confirmations, reorg window.
 */

import type { ChainAdapterConfig } from './types.js';

const CHAIN_138_RPC =
  process.env.CHAIN_138_RPC_URL ?? process.env.CHAIN138_RPC_URL ?? 'https://rpc-http-pub.d-bis.org';
const CHAIN_651940_RPC =
  process.env.CHAIN_651940_RPC_URL ?? 'https://mainnet-rpc.alltra.global';
const ETHEREUM_RPC = process.env.ETHEREUM_RPC_URL ?? 'https://eth.llamarpc.com';
const ARBITRUM_RPC = process.env.ARBITRUM_RPC_URL ?? 'https://arb1.arbitrum.io/rpc';
const BASE_RPC = process.env.BASE_RPC_URL ?? 'https://mainnet.base.org';
const POLYGON_RPC = process.env.POLYGON_RPC_URL ?? 'https://polygon-rpc.com';
const BSC_RPC = process.env.BSC_RPC_URL ?? 'https://bsc-dataseed.binance.org';

/** Tezos mainnet - chainId 1729 (Tezos founding year). Uses TzKT API for read operations. */
const TEZOS_RPC =
  process.env.TEZOS_RPC_URL ?? process.env.TEZOS_TZKT_URL ?? 'https://api.tzkt.io';

/** Chain ID for Tezos mainnet (non-EVM) */
export const TEZOS_CHAIN_ID = 1729;

export const CHAIN_ADAPTER_CONFIGS: Record<number, ChainAdapterConfig> = {
  138: {
    chainId: 138,
    rpcUrls: [CHAIN_138_RPC],
    confirmations: 20,
    chainKey: 'chainid-138',
    reorgWindowBlocks: 20,
  },
  651940: {
    chainId: 651940,
    rpcUrls: [CHAIN_651940_RPC],
    confirmations: 20,
    chainKey: 'all-mainnet',
    reorgWindowBlocks: 20,
  },
  1: {
    chainId: 1,
    rpcUrls: [ETHEREUM_RPC],
    confirmations: 32,
    chainKey: 'ethereum-mainnet',
    reorgWindowBlocks: 64,
  },
  42161: {
    chainId: 42161,
    rpcUrls: [ARBITRUM_RPC],
    confirmations: 20,
    chainKey: 'arbitrum-one',
    reorgWindowBlocks: 40,
  },
  8453: {
    chainId: 8453,
    rpcUrls: [BASE_RPC],
    confirmations: 10,
    chainKey: 'base',
    reorgWindowBlocks: 20,
  },
  137: {
    chainId: 137,
    rpcUrls: [POLYGON_RPC],
    confirmations: 128,
    chainKey: 'polygon',
    reorgWindowBlocks: 128,
  },
  56: {
    chainId: 56,
    rpcUrls: [BSC_RPC],
    confirmations: 15,
    chainKey: 'bsc',
    reorgWindowBlocks: 30,
  },
  [TEZOS_CHAIN_ID]: {
    chainId: TEZOS_CHAIN_ID,
    rpcUrls: [TEZOS_RPC],
    confirmations: 2,
    chainKey: 'tezos-mainnet',
    reorgWindowBlocks: 2,
  },
};

export function getChainConfig(chainId: number): ChainAdapterConfig | undefined {
  return CHAIN_ADAPTER_CONFIGS[chainId];
}

export function getSupportedChainIds(): number[] {
  return Object.keys(CHAIN_ADAPTER_CONFIGS).map(Number);
}