import { OnDestroy } from '@angular/core';
import { type AparteConfig, type AparteConversation, type AparteStorageAdapter } from '@aparte/core';
import type { AparteMessage } from '@aparte/core';
import * as i0 from "@angular/core";
/**
 * Angular 19 Signal-based wrapper around AparteConversationManager.
 *
 * Register a storage adapter before calling init():
 * ```ts
 * // app.config.ts
 * export const appConfig: ApplicationConfig = {
 *   providers: [
 *     {
 *       provide: CONVERSATION_ADAPTER,
 *       useValue: new IndexedDBAdapter('my-app-convs'),
 *     },
 *   ],
 * };
 * ```
 *
 * Then inject ConversationManagerService in any component or service.
 */
export declare class ConversationManagerService implements OnDestroy {
    private _manager;
    private _unsubscribe;
    /** All conversations (active + archived). */
    readonly conversations: import("@angular/core").WritableSignal<AparteConversation[]>;
    /** Active conversations only, newest first. */
    readonly activeConversations: import("@angular/core").Signal<AparteConversation[]>;
    /** Archived conversations, newest first. */
    readonly archivedConversations: import("@angular/core").Signal<AparteConversation[]>;
    /** Currently active conversation id. */
    readonly activeId: import("@angular/core").WritableSignal<string>;
    /** The active conversation object (null when no conv is selected). */
    readonly activeConversation: import("@angular/core").Signal<AparteConversation>;
    /**
     * Initialise the service with a storage adapter.
     * Call once in your root component or app initialiser.
     */
    init(adapter: AparteStorageAdapter, config?: AparteConfig): Promise<void>;
    ngOnDestroy(): void;
    /** Create a new empty conversation, make it active, return it. */
    createNew(title?: string): Promise<AparteConversation>;
    /** Append a message to a conversation and persist. */
    addMessage(convId: string, msg: AparteMessage): Promise<void>;
    /**
     * Replace all messages for a conversation.
     * Call after branch navigation or AI response completion.
     */
    updateMessages(convId: string, messages: AparteMessage[]): Promise<void>;
    /** Permanently delete a conversation. */
    delete(id: string): Promise<void>;
    /** Archive a conversation. */
    archive(id: string): Promise<void>;
    /** Restore an archived conversation. */
    unarchive(id: string): Promise<void>;
    /** Pin a conversation to the top of the list. */
    pin(id: string): Promise<void>;
    /** Unpin a conversation. */
    unpin(id: string): Promise<void>;
    /** Rename a conversation. */
    updateTitle(id: string, title: string): Promise<void>;
    private _assertInit;
    static ɵfac: i0.ɵɵFactoryDeclaration<ConversationManagerService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ConversationManagerService>;
}