import { type PublicClient, type WalletClient, type Chain, type Transport, type Account } from 'viem';
import { type SmartAccount, type BundlerClient } from 'viem/account-abstraction';
import { type SmartAccountClient as PermissionlessSmartAccountClient } from 'permissionless';
import { type PaymasterPolicy } from './paymaster.js';
/** SmartAccountClient type with concrete SmartAccount (not `SmartAccount | undefined`).
 *  This ensures sendTransaction() doesn't require explicit `account` parameter. */
export type AzethSmartAccountClient = PermissionlessSmartAccountClient<Transport, Chain, SmartAccount>;
export interface SmartAccountClientConfig {
    publicClient: PublicClient<Transport, Chain>;
    walletClient: WalletClient<Transport, Chain, Account>;
    smartAccountAddress: `0x${string}`;
    bundlerUrl?: string;
    paymasterUrl?: string;
    /** Client-side sponsorship policy for paymaster gas sponsorship.
     *  Only applies when paymasterUrl is configured. */
    paymasterPolicy?: PaymasterPolicy;
    /** Optional guardian co-signing key. When set, every UserOperation gets a
     *  130-byte dual signature (owner 65 bytes + guardian 65 bytes), enabling
     *  operations that exceed standard spending limits. */
    guardianKey?: `0x${string}`;
    /** Self-guardian fast path: when the account's on-chain guardian IS the owner EOA,
     *  the owner signature doubles as the guardian signature (same key, same userOpHash
     *  → byte-identical 65-byte ECDSA sig). Setting this appends a copy of the owner
     *  signature to produce the 130-byte dual layout GuardianModule expects for
     *  guardian-tier operations (batch executions, guardrail changes, stale-oracle
     *  transfers) — without any separate guardian key. Adds no security and removes
     *  none: the caller already holds the only key the guardian check verifies.
     *  Ignored when guardianKey is set. */
    selfGuardianCosign?: boolean;
    /** Azeth server URL. Used as bundler fallback on testnet — the server
     *  proxies bundler requests using its own PIMLICO_API_KEY so developers
     *  don't need their own key for getting started. */
    serverUrl?: string;
}
/**
 * Create a viem SmartAccount implementation for an existing deployed AzethAccount.
 *
 * This wraps a deployed AzethAccount v12 smart account as a viem SmartAccount
 * that can be used with permissionless's createSmartAccountClient to submit
 * UserOperations through ERC-4337 EntryPoint v0.7.
 *
 * The signing flow matches GuardianModule expectations:
 * - Computes getUserOperationHash (ERC-4337 standard)
 * - Signs with walletClient.signMessage({ message: { raw: hash } })
 * - This produces sign(keccak256("\x19Ethereum Signed Message:\n32" + userOpHash))
 * - GuardianModule._splitSignature expects ECDSA owner sig as first 65 bytes
 */
export declare function createAzethSmartAccount(publicClient: PublicClient<Transport, Chain>, walletClient: WalletClient<Transport, Chain, Account>, smartAccountAddress: `0x${string}`, guardianKey?: `0x${string}`, estimateBundlerClient?: BundlerClient, selfGuardianCosign?: boolean): Promise<SmartAccount>;
/** Apply the verification-gas safety buffer to a bundler estimate.
 *  See {@link VERIFICATION_GAS_BUFFER_NUMERATOR} for why this is needed. */
export declare function applyVerificationGasBuffer(verificationGasLimit: bigint): bigint;
/**
 * Create a permissionless SmartAccountClient for an AzethAccount.
 *
 * The SmartAccountClient handles the full ERC-4337 flow:
 * 1. Encodes calls via account.encodeCalls()
 * 2. Gets nonce from EntryPoint
 * 3. Estimates gas via bundler
 * 4. Signs UserOp via account.signUserOperation()
 * 5. Submits to bundler via eth_sendUserOperation
 * 6. Waits for receipt and returns transaction hash
 *
 * @param config - Configuration with clients, smart account address, and bundler URL
 * @returns A SmartAccountClient that can be used for sendTransaction/writeContract
 */
export declare function createAzethSmartAccountClient(config: SmartAccountClientConfig): Promise<AzethSmartAccountClient>;
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