import { InvalidDIDError } from './errors'

/**
* @ignore
*/
export function makeDIDFromAddress(address: string) {
  return `did:btc-addr:${address}`
}

/**
* @ignore
*/
export function makeDIDFromPublicKey(publicKey: string) {
  return `did:ecdsa-pub:${publicKey}`
}

/**
* @ignore
*/
export function getDIDType(decentralizedID: string) {
  const didParts = decentralizedID.split(':')
  
  if (didParts.length !== 3) {
    throw new InvalidDIDError('Decentralized IDs must have 3 parts')
  }

  if (didParts[0].toLowerCase() !== 'did') {
    throw new InvalidDIDError('Decentralized IDs must start with "did"')
  }

  return didParts[1].toLowerCase()
}

/**
* @ignore
*/
export function getAddressFromDID(decentralizedID: string) {
  const didType = getDIDType(decentralizedID)
  
  if (didType === 'btc-addr') {
    return decentralizedID.split(':')[2]
  } else {
    return null
  }
}

/*
export function getPublicKeyOrAddressFromDID(decentralizedID) {
  const didParts = decentralizedID.split(':')

  if (didParts.length !== 3) {
    throw new InvalidDIDError('Decentralized IDs must have 3 parts')
  }

  if (didParts[0].toLowerCase() !== 'did') {
    throw new InvalidDIDError('Decentralized IDs must start with "did"')
  }

  if (didParts[1].toLowerCase() === 'ecdsa-pub') {
    return didParts[2]
  } else if (didParts[1].toLowerCase() === 'btc-addr') {
    return didParts[2]
  } else {
    throw new InvalidDIDError('Decentralized ID format not supported')
  }
}
*/