import type {
  Account,
  Address,
  Hash,
  SendTransactionParameters,
  Transport,
} from 'viem'
import { sendTransaction } from 'viem/actions'
import type { ChainWithPns, ClientWithAccount } from '../../contracts/consts.js'
import type {
  Prettify,
  SimpleTransactionRequest,
  WriteTransactionParameters,
} from '../../types.js'
import { encodeClearRecords } from '../../utils/encoders/encodeClearRecords.js'
import { namehash } from '../../utils/normalise.js'

export type ClearRecordsDataParameters = {
  /** The name to clear records for */
  name: string
  /** The resolver address to use */
  resolverAddress: Address
}

export type ClearRecordsDataReturnType = SimpleTransactionRequest

export type ClearRecordsParameters<
  TChain extends ChainWithPns,
  TAccount extends Account | undefined,
  TChainOverride extends ChainWithPns | undefined,
> = Prettify<
  ClearRecordsDataParameters &
    WriteTransactionParameters<TChain, TAccount, TChainOverride>
>

export type ClearRecordsReturnType = Hash

export const makeFunctionData = <
  TChain extends ChainWithPns,
  TAccount extends Account | undefined,
>(
  _wallet: ClientWithAccount<Transport, TChain, TAccount>,
  { name, resolverAddress }: ClearRecordsDataParameters,
): ClearRecordsDataReturnType => {
  return {
    to: resolverAddress,
    data: encodeClearRecords(namehash(name)),
  }
}

/**
 * Clears the records for a name on a resolver.
 * @param wallet - {@link ClientWithAccount}
 * @param parameters - {@link ClearRecordsParameters}
 * @returns Transaction hash. {@link ClearRecordsReturnType}
 *
 * @example
 * import { createWalletClient, custom } from 'viem'
 * import { mainnet } from 'viem/chains'
 * import { addPnsContracts } from '@pnsdomains/pnsjs'
 * import { clearRecords } from '@pnsdomains/pnsjs/wallet'
 *
 * const wallet = createWalletClient({
 *   chain: addPnsContracts(mainnet),
 *   transport: custom(window.ethereum),
 * })
 * const hash = await clearRecords(wallet, {
 *   name: 'pns.pls',
 *   resolverAddress: '0x4976fb03C32e5B8cfe2b6cCB31c09Ba78EBaBa41',
 * })
 * // 0x...
 */
async function clearRecords<
  TChain extends ChainWithPns,
  TAccount extends Account | undefined,
  TChainOverride extends ChainWithPns | undefined = ChainWithPns,
>(
  wallet: ClientWithAccount<Transport, TChain, TAccount>,
  {
    name,
    resolverAddress,
    ...txArgs
  }: ClearRecordsParameters<TChain, TAccount, TChainOverride>,
): Promise<ClearRecordsReturnType> {
  const data = makeFunctionData(wallet, {
    name,
    resolverAddress,
  })
  const writeArgs = {
    ...data,
    ...txArgs,
  } as SendTransactionParameters<TChain, TAccount, TChainOverride>
  return sendTransaction(wallet, writeArgs)
}

clearRecords.makeFunctionData = makeFunctionData

export default clearRecords