/**
 * @module index
 */
import { TRANSACTION_TYPE, IAliasParams, IAliasTransaction, WithId, WithSender } from '../transactions'
import { binary } from '@acryl/marshall'
import { base58Encode, blake2b, signBytes } from '@acryl/ts-lib-crypto'
import { addProof, convertToPairs, fee, getSenderPublicKey, networkByte } from '../generic'
import { TSeedTypes } from '../types'
import { validate } from '../validators'


/* @echo DOCS */
export function alias(params: IAliasParams, seed: TSeedTypes): IAliasTransaction & WithId
export function alias(paramsOrTx: IAliasParams & WithSender | IAliasTransaction, seed?: TSeedTypes): IAliasTransaction & WithId
export function alias(paramsOrTx: any, seed?: TSeedTypes): IAliasTransaction & WithId {
  const type = TRANSACTION_TYPE.ALIAS
  const version = paramsOrTx.version || 2
  const seedsAndIndexes = convertToPairs(seed)
  const senderPublicKey = getSenderPublicKey(seedsAndIndexes, paramsOrTx)

  const tx: IAliasTransaction & WithId = {
    type,
    version,
    senderPublicKey,
    alias: paramsOrTx.alias,
    fee: fee(paramsOrTx, 100000),
    timestamp: paramsOrTx.timestamp || Date.now(),
    chainId: networkByte(paramsOrTx.chainId, 65),
    proofs: paramsOrTx.proofs || [],
    id: '',
  }

  validate.alias(tx)
  
  const bytes = binary.serializeTx(tx)

  seedsAndIndexes.forEach(([s, i]) => addProof(tx, signBytes(s, bytes), i))

  const idBytes = [bytes[0], ...bytes.slice(36, -16)]
  tx.id = base58Encode(blake2b(Uint8Array.from(idBytes)))

  return tx
}