const {
  getChainIdRPC,
  getChainGasPriceRPC,
  getChainMaxPriorityFeeRPC,
  getAccountBalanceRPC,
  getAccountNonceRPC,
  hasCodeRPC,
} = require('./cast.js')
const { tryReadConfigValue } = require('./config.js')
const { readEnv, tryReadEnv } = require('./env.js')
const { logInfo } = require('./logger.js')
const { readWalletAddress, readWalletType } = require('./wallet.js')

const OPTION_AUTO_FILL_GAS_PRICE_LEGACY = '--auto-gas-legacy'
const OPTION_AUTO_FILL_GAS_PRICE_1559 = '--auto-gas-1559'

const VERIFIER_ETHERSCAN = 'etherscan'
const VERIFIER_BLOCKSCOUT = 'blockscout'
const VERIFIER_SOURCIFY = 'sourcify'

/**
 * Reads the URL of the chain's RPC from the environment variables.
 *
 * @param {string} chainName - The name of the chain
 * @returns {string} The URL of the chain's RPC
 */
const readChainRPC = (chainName) => {
  return readEnv(chainName, 'RPC')
}

/**
 * Checks if any verifier is enabled for the given chain.
 *
 * This function determines if a verifier (like Etherscan, Blockscout, or Sourcify)
 * is configured and enabled for the specified chain by checking if the verifier
 * settings are present in the environment variables.
 *
 * @param {string} chainName - The name of the chain to check for verifier settings
 * @returns {boolean} True if a verifier is enabled, false otherwise
 */
const isVerifierEnabled = (chainName) => {
  return readChainVerificationOptions(chainName).length > 0
}

/**
 * Reads chain specific options from the devops configuration.
 * If no options are found, returns an empty string.
 *
 * @param {string} chainName - The name of the chain
 * @returns {string} The chain specific options
 */
const readChainSpecificOptions = (chainName) => {
  const options = tryReadConfigValue('chains', chainName) || ''
  return applyAutoFillGasPrice(chainName, options)
}

const readChainVerificationOptions = (chainName) => {
  const verifier = tryReadEnv(chainName, 'VERIFIER')
  switch (verifier) {
    case VERIFIER_ETHERSCAN:
      return readEtherscanOptions(chainName)
    case VERIFIER_BLOCKSCOUT:
      return readBlockscoutOptions(chainName)
    case VERIFIER_SOURCIFY:
      return readSourcifyOptions(chainName)
    default:
      return ''
  }
}

const optionalParam = (name, value) => {
  return value ? `${name} ${value}` : ''
}

const readEtherscanOptions = (chainName) => {
  const url = tryReadEnv(chainName, 'VERIFIER_URL')
  const key =
    tryReadEnv(chainName, 'VERIFIER_KEY') ?? readEnv('ETHERSCAN_V2_KEY')
  return `--verifier etherscan --verifier-api-key ${key} ${optionalParam(
    '--verifier-url',
    url
  )}`
}

const readBlockscoutOptions = (chainName) => {
  const url = readEnv(chainName, 'VERIFIER_URL')
  const key = tryReadEnv(chainName, 'VERIFIER_KEY')
  return `--verifier blockscout --verifier-url ${url} ${optionalParam(
    '--verifier-api-key',
    key
  )}`
}

const readSourcifyOptions = (chainName) => {
  const url = tryReadEnv(chainName, 'VERIFIER_URL')
  return `--verifier sourcify ${optionalParam('--verifier-url', url)}`
}

/**
 * Fetches the gas price from the chain's RPC and updates the options, if the auto-fill gas price option is present.
 *
 * @param {string} chainName - The name of the chain
 * @param {string} options - The chain specific options
 * @returns {string} The chain specific options with the gas price filled in, if the auto-fill gas price option is present
 */
const applyAutoFillGasPrice = (chainName, options) => {
  if (options.includes(OPTION_AUTO_FILL_GAS_PRICE_LEGACY)) {
    const gasPrice = getChainGasPrice(chainName)
    return options.replace(
      OPTION_AUTO_FILL_GAS_PRICE_LEGACY,
      `--with-gas-price ${gasPrice}`
    )
  } else if (options.includes(OPTION_AUTO_FILL_GAS_PRICE_1559)) {
    const priorityFee = getChainMaxPriorityFee(chainName)
    /*
    TODO: reenable this once the foundry bug is fixed: https://github.com/foundry-rs/foundry/issues/7486
    Currently the maxGasPrice is used for both base and priority, rendering the setting of priority fee useless.

    // Use 2*gasPrice as the maxGasPrice
    const maxGasPrice = 2 * gasPrice
    return options.replace(
      OPTION_AUTO_FILL_GAS_PRICE_1559,
      `--with-gas-price ${maxGasPrice} --priority-gas-price ${priorityFee}`
    )
    */
    return options.replace(
      OPTION_AUTO_FILL_GAS_PRICE_1559,
      `--priority-gas-price ${priorityFee}`
    )
  }
  return options
}

const getChainId = (chainName) => {
  return getChainIdRPC(readChainRPC(chainName))
}

const getChainGasPrice = (chainName) => {
  return getChainGasPriceRPC(readChainRPC(chainName))
}

const getChainMaxPriorityFee = (chainName) => {
  return getChainMaxPriorityFeeRPC(readChainRPC(chainName))
}

const getAccountBalance = (chainName, address) => {
  return getAccountBalanceRPC(readChainRPC(chainName), address)
}

const getAccountNonce = (chainName, address) => {
  return getAccountNonceRPC(readChainRPC(chainName), address)
}

const hasCode = (chainName, address) => {
  return hasCodeRPC(readChainRPC(chainName), address)
}

const logWallet = (chainName, walletName) => {
  const walletAddr = readWalletAddress(walletName)
  const walletType = readWalletType(walletName)
  logInfo(`Wallet: ${walletAddr} [${walletName}, ${walletType}]`)
  const balance = getAccountBalance(chainName, walletAddr)
  const nonce = getAccountNonce(chainName, walletAddr)
  logInfo(`  Balance: ${balance}`)
  logInfo(`  Nonce: ${nonce}`)
}

module.exports = {
  isVerifierEnabled,
  readChainRPC,
  readChainSpecificOptions,
  readChainVerificationOptions,
  getChainId,
  getChainGasPrice,
  getAccountBalance,
  getAccountNonce,
  hasCode,
  logWallet,
  VERIFIER_ETHERSCAN,
  VERIFIER_BLOCKSCOUT,
  VERIFIER_SOURCIFY,
}