import { DateProvider } from '@aztec/foundation/timer';
import type { LocalSignerConfig, ValidatorHASignerConfig } from '@aztec/stdlib/ha-signing';
import type { CreateHASignerDeps, CreateLocalSignerWithProtectionDeps, SlashingProtectionDatabase } from './types.js';
import { ValidatorHASigner } from './validator_ha_signer.js';
/**
 * Create a validator HA signer with PostgreSQL backend
 *
 * After creating the signer, call `signer.start()` to begin background
 * cleanup tasks. Call `signer.stop()` during graceful shutdown.
 *
 * Example with manual migrations (recommended for production):
 * ```bash
 * # Run migrations separately
 * yarn migrate:up
 * ```
 *
 * ```typescript
 * const { signer, db } = await createHASigner({
 *   databaseUrl: process.env.DATABASE_URL,
 *   nodeId: 'validator-node-1',
 *   pollingIntervalMs: 100,
 *   peerSigningTimeoutMs: 3000,
 * });
 * signer.start(); // Start background cleanup
 *
 * // ... use signer ...
 *
 * await signer.stop(); // On shutdown
 * ```
 *
 * Note: Migrations must be run separately using `aztec migrate-ha-db up` before
 * creating the signer. The factory will verify the schema is initialized via `db.initialize()`.
 *
 * @param config - Configuration for the HA signer
 * @param deps - Optional dependencies (e.g., for testing)
 * @returns An object containing the signer and database instances
 */
export declare function createHASigner(config: ValidatorHASignerConfig, deps?: CreateHASignerDeps): Promise<{
    signer: ValidatorHASigner;
    db: SlashingProtectionDatabase;
}>;
/**
 * Create a local (single-node) signing protection signer backed by LMDB.
 *
 * This provides double-signing protection for nodes that are NOT running in a
 * high-availability (multi-node) setup. It prevents a proposer from sending two
 * proposals for the same slot if the node crashes and restarts mid-proposal.
 *
 * `config.dataDirectory` is required so the protection database is persisted to disk and survives
 * crashes/restarts. Booting without it throws, since an ephemeral store silently drops all
 * double-signing protection across restarts. Set `config.allowEphemeralSigningProtection` to opt
 * into the ephemeral store anyway (dev/test networks only) — a loud warning is logged in that case.
 *
 * @param config - Local signer config
 * @param deps - Optional dependencies (telemetry, date provider).
 * @returns An object containing the signer and database instances.
 */
export declare function createLocalSignerWithProtection(config: LocalSignerConfig, deps?: CreateLocalSignerWithProtectionDeps): Promise<{
    signer: ValidatorHASigner;
    db: SlashingProtectionDatabase;
}>;
/**
 * Create an in-memory LMDB-backed SlashingProtectionDatabase that can be shared across
 * multiple validator nodes in the same process. Used for testing HA setups.
 */
export declare function createSharedSlashingProtectionDb(dateProvider?: DateProvider): Promise<SlashingProtectionDatabase>;
/**
 * Create a ValidatorHASigner backed by a pre-existing SlashingProtectionDatabase.
 * Used for testing HA setups where multiple nodes share the same protection database.
 */
export declare function createSignerFromSharedDb(db: SlashingProtectionDatabase, config: Pick<ValidatorHASignerConfig, 'nodeId' | 'pollingIntervalMs' | 'peerSigningTimeoutMs' | 'maxStuckDutiesAgeMs' | 'rollupAddress'>, deps?: CreateLocalSignerWithProtectionDeps): {
    signer: ValidatorHASigner;
    db: SlashingProtectionDatabase;
};
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