import type { AgentSession, AgentSessionStatus, AgentSessionStore, ArtifactStore, OutputArtifact } from "./types.js";
export interface PostgresPlatformStoreOptions {
    tablePrefix?: string;
}
export interface PostgresPlatformQueryResult {
    rows: Record<string, unknown>[];
    rowCount?: number | null;
}
export interface PostgresPlatformClient {
    query(sql: string, params?: unknown[]): Promise<PostgresPlatformQueryResult>;
    end?(): Promise<void>;
}
export declare class PostgresAgentSessionStore implements AgentSessionStore {
    private readonly client;
    private readonly sessionsTable;
    private constructor();
    static create(connectionString: string, options?: PostgresPlatformStoreOptions): Promise<PostgresAgentSessionStore>;
    static fromClient(client: PostgresPlatformClient, options?: PostgresPlatformStoreOptions): PostgresAgentSessionStore;
    ensureSchema(): Promise<void>;
    create(session: AgentSession): Promise<void>;
    save(session: AgentSession): Promise<void>;
    get(sessionId: string): Promise<AgentSession | null>;
    list(filter?: {
        status?: AgentSessionStatus;
    }): Promise<AgentSession[]>;
    close(): Promise<void>;
}
export declare class PostgresArtifactStore implements ArtifactStore {
    private readonly client;
    private readonly artifactsTable;
    private constructor();
    static create(connectionString: string, options?: PostgresPlatformStoreOptions): Promise<PostgresArtifactStore>;
    static fromClient(client: PostgresPlatformClient, options?: PostgresPlatformStoreOptions): PostgresArtifactStore;
    ensureSchema(): Promise<void>;
    put(artifact: OutputArtifact): Promise<OutputArtifact>;
    list(sessionId: string): Promise<OutputArtifact[]>;
    close(): Promise<void>;
}
export interface PostgresPlatformStores {
    sessionStore: PostgresAgentSessionStore;
    artifactStore: PostgresArtifactStore;
    close(): Promise<void>;
}
export declare function createPostgresPlatformStores(connectionString: string, options?: PostgresPlatformStoreOptions): Promise<PostgresPlatformStores>;
export declare function createPostgresPlatformStoresFromClient(client: PostgresPlatformClient, options?: PostgresPlatformStoreOptions): Promise<PostgresPlatformStores>;
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