import { fromBech32 } from '@cosmjs/encoding'

export const isValidWalletAddress = (
  address: string,
  prefix?: string
): boolean => isValidBech32Address(address, prefix, 20)

export const isValidValidatorAddress = (
  address: string,
  prefix: string
): boolean => isValidBech32Address(address, prefix + 'valoper')

// Validates any bech32 prefix, optionally requiring a specific prefix and/or
// length.
export const isValidBech32Address = (
  address: string,
  // If passed, the prefix must match this value.
  prefix?: string,
  // If passed, the address must contain this many bytes.
  length?: number
): boolean => {
  try {
    const decoded = fromBech32(address)

    if (prefix && decoded.prefix !== prefix) {
      return false
    }

    if (length !== undefined && decoded.data.length !== length) {
      return false
    }

    return true
  } catch {
    return false
  }
}

export const isValidTokenFactoryDenom = (
  denom: string,
  // If passed, the prefix must match this value.
  prefix?: string
) => {
  if (!denom?.length) {
    return false
  }

  const [factory, owner, name] = denom.split('/')
  return (
    factory.toLowerCase() === 'factory' &&
    isValidBech32Address(owner, prefix) &&
    !!name
  )
}