/**
 * @license
 * Copyright 2025 Vybestack LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { type IContent } from '../services/history/IContent.js';
import { Storage } from '../config/storage.js';
import { type ToolResultDisplay, type ToolCallConfirmationDetails } from '../tools/tools.js';
/**
 * Persisted tool call display information.
 * Matches CLI's IndividualToolCallDisplay interface for type compatibility.
 */
export interface PersistedToolCall {
    /** Unique identifier for the tool call */
    callId: string;
    /** Tool name */
    name: string;
    /** Human-readable description of what the tool is doing */
    description: string;
    /** Tool execution status (string to accept CLI's ToolCallStatus enum) */
    status: string;
    /** Result display for completed tools */
    resultDisplay: ToolResultDisplay | undefined;
    /** Confirmation details for tools requiring user approval */
    confirmationDetails: ToolCallConfirmationDetails | undefined;
    /** Whether to render output as markdown */
    renderOutputAsMarkdown?: boolean;
    /** Whether this tool is currently focused in UI */
    isFocused?: boolean;
}
/**
 * Minimal interface for persisted UI history items.
 * CLI's HistoryItem should satisfy this interface.
 * Uses permissive types since CLI has multiple history types with different shapes.
 */
export interface PersistedUIHistoryItem {
    /** Unique identifier for the history item */
    id: number;
    /** Type discriminator for the history item */
    type: string;
    /** Optional text content (for user/gemini/info/warning/error messages) */
    text?: string;
    /** Optional model identifier (for gemini responses) */
    model?: string;
    /** Optional agent ID (for subagent contexts) */
    agentId?: string;
    /** Optional tools array - shape varies by type (tool_group vs tools_list) */
    tools?: unknown[];
}
/**
 * Persisted session format for --continue functionality
 */
export interface PersistedSession {
    /** Schema version for future migrations */
    version: 1;
    /** Unique session identifier */
    sessionId: string;
    /** Hash of project root for validation */
    projectHash: string;
    /** When session was created */
    createdAt: string;
    /** Last update timestamp */
    updatedAt: string;
    /** Full conversation history (core format) */
    history: IContent[];
    /** UI history items for display restoration (preserves exactly what user sees) */
    uiHistory?: PersistedUIHistoryItem[];
    /** Optional metadata */
    metadata?: {
        provider?: string;
        model?: string;
        tokenCount?: number;
    };
}
/**
 * Service for persisting and restoring conversation sessions.
 * Enables the --continue flag to resume previous sessions.
 */
export declare class SessionPersistenceService {
    private readonly storage;
    private readonly sessionId;
    private readonly chatsDir;
    private readonly sessionFilePath;
    constructor(storage: Storage, sessionId: string);
    /**
     * Get the directory containing persisted sessions
     */
    getChatsDir(): string;
    /**
     * Get the current session's file path
     */
    getSessionFilePath(): string;
    /**
     * Save conversation history to disk
     */
    save(history: IContent[], metadata?: PersistedSession['metadata'], uiHistory?: PersistedUIHistoryItem[]): Promise<void>;
    /**
     * Load the most recent session for this project
     */
    loadMostRecent(): Promise<PersistedSession | null>;
    /**
     * Get formatted timestamp for display
     */
    static formatSessionTime(session: PersistedSession): string;
    /**
     * Get project hash for validation
     */
    private getProjectHash;
    /**
     * Get or track session creation time
     */
    private createdAt;
    private getCreatedAt;
    /**
     * Back up corrupted session file
     */
    private backupCorruptedSession;
}