import type { Account } from '../../accounts/types.js'
import {
  type ParseAccountErrorType,
  parseAccount,
} from '../../accounts/utils/parseAccount.js'
import type { SignTransactionErrorType } from '../../accounts/utils/signTransaction.js'
import type { Client } from '../../clients/createClient.js'
import type { Transport } from '../../clients/transports/createTransport.js'
import { AccountNotFoundError } from '../../errors/account.js'
import type { BaseError } from '../../errors/base.js'
import type { ErrorType } from '../../errors/utils.js'
import type { GetAccountParameter } from '../../types/account.js'
import type { Chain } from '../../types/chain.js'
import type { GetChain } from '../../types/chain.js'
import type { Hash } from '../../types/misc.js'
import type {
  TransactionRequest,
  TransactionSerializable,
} from '../../types/transaction.js'
import type { UnionOmit } from '../../types/utils.js'
import type { RequestErrorType } from '../../utils/buildRequest.js'
import {
  type AssertCurrentChainErrorType,
  assertCurrentChain,
} from '../../utils/chain.js'
import {
  type GetTransactionErrorReturnType,
  getTransactionError,
} from '../../utils/errors/getTransactionError.js'
import { extract } from '../../utils/formatters/extract.js'
import {
  type FormattedTransactionRequest,
  formatTransactionRequest,
} from '../../utils/formatters/transactionRequest.js'
import {
  type AssertRequestErrorType,
  type AssertRequestParameters,
  assertRequest,
} from '../../utils/transaction/assertRequest.js'
import { type GetChainIdErrorType, getChainId } from '../public/getChainId.js'
import {
  type PrepareTransactionRequestErrorType,
  prepareTransactionRequest,
} from './prepareTransactionRequest.js'
import {
  type SendRawTransactionReturnType,
  sendRawTransaction,
} from './sendRawTransaction.js'

export type SendTransactionParameters<
  TChain extends Chain | undefined = Chain | undefined,
  TAccount extends Account | undefined = Account | undefined,
  TChainOverride extends Chain | undefined = Chain | undefined,
> = UnionOmit<
  FormattedTransactionRequest<
    TChainOverride extends Chain ? TChainOverride : TChain
  >,
  'from'
> &
  GetAccountParameter<TAccount> &
  GetChain<TChain, TChainOverride>

export type SendTransactionReturnType = Hash

export type SendTransactionErrorType =
  | ParseAccountErrorType
  | GetTransactionErrorReturnType<
      | AssertCurrentChainErrorType
      | AssertRequestErrorType
      | GetChainIdErrorType
      | PrepareTransactionRequestErrorType
      | SendRawTransactionReturnType
      | SignTransactionErrorType
      | RequestErrorType
    >
  | ErrorType

/**
 * Creates, signs, and sends a new transaction to the network.
 *
 * - Docs: https://viem.sh/docs/actions/wallet/sendTransaction.html
 * - Examples: https://stackblitz.com/github/wagmi-dev/viem/tree/main/examples/transactions/sending-transactions
 * - JSON-RPC Methods:
 *   - JSON-RPC Accounts: [`eth_sendTransaction`](https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sendtransaction)
 *   - Local Accounts: [`eth_sendRawTransaction`](https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sendrawtransaction)
 *
 * @param client - Client to use
 * @param parameters - {@link SendTransactionParameters}
 * @returns The [Transaction](https://viem.sh/docs/glossary/terms.html#transaction) hash. {@link SendTransactionReturnType}
 *
 * @example
 * import { createWalletClient, custom } from 'viem'
 * import { mainnet } from 'viem/chains'
 * import { sendTransaction } from 'viem/wallet'
 *
 * const client = createWalletClient({
 *   chain: mainnet,
 *   transport: custom(window.ethereum),
 * })
 * const hash = await sendTransaction(client, {
 *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
 *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
 *   value: 1000000000000000000n,
 * })
 *
 * @example
 * // Account Hoisting
 * import { createWalletClient, http } from 'viem'
 * import { privateKeyToAccount } from 'viem/accounts'
 * import { mainnet } from 'viem/chains'
 * import { sendTransaction } from 'viem/wallet'
 *
 * const client = createWalletClient({
 *   account: privateKeyToAccount('0x…'),
 *   chain: mainnet,
 *   transport: http(),
 * })
 * const hash = await sendTransaction(client, {
 *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
 *   value: 1000000000000000000n,
 * })
 */
export async function sendTransaction<
  TChain extends Chain | undefined,
  TAccount extends Account | undefined,
  TChainOverride extends Chain | undefined,
>(
  client: Client<Transport, TChain, TAccount>,
  args: SendTransactionParameters<TChain, TAccount, TChainOverride>,
): Promise<SendTransactionReturnType> {
  const {
    account: account_ = client.account,
    chain = client.chain,
    accessList,
    data,
    gas,
    gasPrice,
    maxFeePerGas,
    maxPriorityFeePerGas,
    nonce,
    to,
    value,
    ...rest
  } = args

  if (!account_)
    throw new AccountNotFoundError({
      docsPath: '/docs/actions/wallet/sendTransaction',
    })
  const account = parseAccount(account_)

  try {
    assertRequest(args as AssertRequestParameters)

    let chainId
    if (chain !== null) {
      chainId = await getChainId(client)
      assertCurrentChain({
        currentChainId: chainId,
        chain,
      })
    }

    if (account.type === 'local') {
      // Prepare the request for signing (assign appropriate fees, etc.)
      const request = await prepareTransactionRequest(client, {
        account,
        accessList,
        chain,
        data,
        gas,
        gasPrice,
        maxFeePerGas,
        maxPriorityFeePerGas,
        nonce,
        to,
        value,
        ...rest,
      } as any)

      if (!chainId) chainId = await getChainId(client)

      const serializer = chain?.serializers?.transaction
      const serializedTransaction = (await account.signTransaction(
        {
          ...request,
          chainId,
        } as TransactionSerializable,
        { serializer },
      )) as Hash
      return await sendRawTransaction(client, {
        serializedTransaction,
      })
    }

    const format =
      chain?.formatters?.transactionRequest?.format || formatTransactionRequest
    const request = format({
      // Pick out extra data that might exist on the chain's transaction request type.
      ...extract(rest, { format }),
      accessList,
      data,
      from: account.address,
      gas,
      gasPrice,
      maxFeePerGas,
      maxPriorityFeePerGas,
      nonce,
      to,
      value,
    } as TransactionRequest)
    return await client.request({
      method: 'eth_sendTransaction',
      params: [request],
    })
  } catch (err) {
    throw getTransactionError(err as BaseError, {
      ...args,
      account,
      chain: args.chain || undefined,
    })
  }
}