import { FlowMetadata } from '../models/FlowMetadata';
import { ToolCall } from '../models/ToolCall';
import { VideoSegment } from '../models/VideoSegment';
import { FlowsPersistence, PaginatedFlowsResult } from './FlowsPersistence';
import { BrowserStorageState } from '../models/BrowserStorageState';
import { FlowsQuery } from '../models/FlowsQuery';
/**
 * A persistence implementation that uses the filesystem.
 */
export declare class FlowsPersistenceFilesystem implements FlowsPersistence {
    readonly flowsDirectory: string;
    private static readonly METADATA_FILENAME;
    private static readonly BROWSER_STATE_FILENAME;
    private static readonly SCREENSHOT_FILENAME_SUFFIX;
    private static readonly TOOL_CALL_FILENAME_SUFFIX;
    private static readonly VIDEO_FILENAME;
    private constructor();
    static create(storageDirectory: string): Promise<FlowsPersistenceFilesystem>;
    saveMetadata(flowMetadata: FlowMetadata): Promise<void>;
    getMetadataByFlowId(flowId: string): Promise<FlowMetadata>;
    /**
     * Get flow metadata by name using pagination for efficiency
     */
    getMetadataByFlowName(flowName: string): Promise<FlowMetadata>;
    savePngScreenShot(flowId: string, bytes: Buffer): Promise<string>;
    getPngScreenShot(flowId: string, screenShotId: string): Promise<Buffer | null>;
    saveToolCall(flowId: string, toolCall: ToolCall): Promise<void>;
    getToolCalls(flowId: string): Promise<ToolCall[]>;
    /**
     * Get flows with pagination and filtering from filesystem storage
     */
    getFlows(query: FlowsQuery): Promise<PaginatedFlowsResult>;
    setVideo(flowId: string, bytes: Buffer): Promise<void>;
    getVideoSegment(flowId: string, startOffset: number, length: number): Promise<VideoSegment | null>;
    getFlowFile(flowId: string, fileId: string): Promise<Buffer | null>;
    setFlowFile(flowId: string, fileId: string, fileBytes: Buffer): Promise<void>;
    setBrowserState(flowId: string, browserState: BrowserStorageState): Promise<void>;
    getBrowserState(flowId: string): Promise<BrowserStorageState | null>;
    deleteFlow(flowId: string): Promise<void>;
    private getFlowDirectory;
    private getAllFlowDirectories;
}
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