import { Interface } from '@ethersproject/abi';
import { DeepReadonly } from 'ts-essentials';
import { Log, Logger } from '../../../types';
import { StatefulEventSubscriber } from '../../../stateful-event-subscriber';
import { IDexHelper } from '../../../dex-helper/idex-helper';
import { DirectionalFeeConfig, DirectionalFeeHookState } from './directionalFeeHook';
import { StableSurgeConfig, StableSurgeHookState } from './stableSurgeHook';
import { AkronHookState, AkronConfig } from './akronHook';
export type HookState = DirectionalFeeHookState | StableSurgeHookState | AkronHookState;
export type HookStateMap = {
    [address: string]: HookState;
};
export type HookConfig = DirectionalFeeConfig | StableSurgeConfig | AkronConfig;
export type HooksConfigMap = {
    [hookAddress: string]: HookConfig[];
};
/**
 * This will handle events/state for each supported hook contract. State is used during swap calculations.
 * Each hook should have its own implementation file for state typing, fetching state and handling events.
 */
export declare class BalancerEventHook extends StatefulEventSubscriber<HookStateMap> {
    readonly parentName: string;
    protected network: number;
    protected dexHelper: IDexHelper;
    handlers: {
        [event: string]: (event: any, state: DeepReadonly<HookStateMap>, log: Readonly<Log>, logger: Logger) => DeepReadonly<HookStateMap> | null;
    };
    interfaces: Interface[];
    logDecoder: (log: Log) => any;
    addressesSubscribed: string[];
    hooksConfigMap: HooksConfigMap;
    constructor(parentName: string, network: number, dexHelper: IDexHelper, logger: Logger);
    /**
     * The function is called every time any of the subscribed
     * addresses release log. The function accepts the current
     * state, updates the state according to the log, and returns
     * the updated state.
     * @param state - Current state of event subscriber
     * @param log - Log released by one of the subscribed addresses
     * @returns Updates state of the event subscriber after the log
     */
    protected processLog(state: DeepReadonly<HookStateMap>, log: Readonly<Log>): DeepReadonly<HookStateMap> | null;
    /**
     * The function generates state using on-chain calls. This
     * function is called to regenerate state if the event based
     * system fails to fetch events and the local state is no
     * more correct.
     * @param blockNumber - Blocknumber for which the state should
     * should be generated
     * @returns state of the event subscriber at blocknumber
     */
    generateState(blockNumber: number): Promise<DeepReadonly<HookStateMap>>;
    updateHookState(): Promise<void>;
}