import type { HistoryMessage } from './tui-backend.js';
export type TuiSessionSnapshotEntryType = 'message' | 'compaction' | 'context' | 'bash' | 'custom' | 'branch';
export interface TuiSessionSnapshotEntry {
    id: string;
    type: TuiSessionSnapshotEntryType;
    parentId: string | null;
    customType?: string;
    data?: unknown;
    display?: boolean;
    userLabel?: string;
    labelTimestamp?: string;
    role?: 'user' | 'assistant' | 'system';
    message?: {
        role: 'user' | 'assistant' | 'system';
        content: string;
        usage?: {
            input: number;
            output: number;
            cost: {
                total: number;
            };
        };
    };
    content: string;
    timestamp?: number;
    raw?: HistoryMessage | Record<string, unknown>;
}
export interface TuiSessionSnapshotHeader {
    type: 'session';
    version?: number;
    id: string;
    timestamp: string;
    cwd: string;
    parentSession?: string;
}
export interface TuiSessionSnapshotTreeNode {
    entry: TuiSessionSnapshotEntry;
    children: TuiSessionSnapshotTreeNode[];
    label?: string;
    labelTimestamp?: string;
}
export interface TuiReadonlySessionManager {
    getEntries(): TuiSessionSnapshotEntry[];
    getBranch(): TuiSessionSnapshotEntry[];
    getLeafEntry(): TuiSessionSnapshotEntry | undefined;
    getLeafId(): string | null;
    getEntry(entryId: string): TuiSessionSnapshotEntry | undefined;
    getLabel(entryId: string): string | undefined;
    getHeader(): TuiSessionSnapshotHeader | null;
    getTree(): TuiSessionSnapshotTreeNode[];
    getSessionId(): string;
    getSessionFile(): string | undefined;
    getSessionDir(): string | undefined;
    getSessionName(): string | undefined;
    getCwd(): string;
}
export declare class TuiSessionSnapshot {
    private readonly getSessionKey;
    private readonly getCwdValue;
    private readonly getSessionNameValue;
    private readonly getSessionFileValue;
    private readonly getSessionDirValue;
    private entries;
    private nextId;
    constructor(getSessionKey: () => string, getCwdValue: () => string, getSessionNameValue: () => string | undefined, getSessionFileValue?: () => string | undefined, getSessionDirValue?: () => string | undefined);
    replaceFromHistory(messages: HistoryMessage[]): void;
    clear(): void;
    appendMessage(role: 'user' | 'assistant' | 'system', content: string): void;
    setLabel(entryId: string, label: string | undefined): void;
    appendCustomEntry(customType: string, data?: unknown): void;
    appendCustomMessage(message: {
        customType: string;
        content?: string | unknown[];
        display?: boolean;
        details?: unknown;
    }): void;
    manager(): TuiReadonlySessionManager;
    private entryFromHistory;
    private createHeader;
    private createTree;
    private createEntry;
}