import type { ErrorType } from '../../errors/utils.js'
import type {
  Chain,
  ExtractChainFormatterParameters,
} from '../../types/chain.js'
import type { RpcTransactionRequest } from '../../types/rpc.js'
import type { TransactionRequest } from '../../types/transaction.js'
import { numberToHex } from '../encoding/toHex.js'
import { type DefineFormatterErrorType, defineFormatter } from './formatter.js'

export type FormattedTransactionRequest<
  TChain extends Chain | undefined = Chain | undefined,
> = ExtractChainFormatterParameters<
  TChain,
  'transactionRequest',
  TransactionRequest
>

export const rpcTransactionType = {
  legacy: '0x0',
  eip2930: '0x1',
  eip1559: '0x2',
} as const

export type FormatTransactionRequestErrorType = ErrorType

export function formatTransactionRequest(
  transactionRequest: Partial<TransactionRequest>,
) {
  return {
    ...transactionRequest,
    gas:
      typeof transactionRequest.gas !== 'undefined'
        ? numberToHex(transactionRequest.gas)
        : undefined,
    gasPrice:
      typeof transactionRequest.gasPrice !== 'undefined'
        ? numberToHex(transactionRequest.gasPrice)
        : undefined,
    maxFeePerGas:
      typeof transactionRequest.maxFeePerGas !== 'undefined'
        ? numberToHex(transactionRequest.maxFeePerGas)
        : undefined,
    maxPriorityFeePerGas:
      typeof transactionRequest.maxPriorityFeePerGas !== 'undefined'
        ? numberToHex(transactionRequest.maxPriorityFeePerGas)
        : undefined,
    nonce:
      typeof transactionRequest.nonce !== 'undefined'
        ? numberToHex(transactionRequest.nonce)
        : undefined,
    type:
      typeof transactionRequest.type !== 'undefined'
        ? rpcTransactionType[transactionRequest.type]
        : undefined,
    value:
      typeof transactionRequest.value !== 'undefined'
        ? numberToHex(transactionRequest.value)
        : undefined,
  } as RpcTransactionRequest
}

export type DefineTransactionRequestErrorType =
  | DefineFormatterErrorType
  | ErrorType

export const defineTransactionRequest = /*#__PURE__*/ defineFormatter(
  'transactionRequest',
  formatTransactionRequest,
)