import { ChatStatus } from 'ai';
import { PptxAiBridge, PptxAiChatSession, PptxAiConfig, PptxAiUIMessage, ProposalView, ToolCanvasTarget } from 'pptx-viewer-shared/ai';
/** Lifecycle of the AI session bootstrap. */
export type AiChatInitState = 'checking' | 'unavailable' | 'ready' | 'error';
/** Inputs + injectable seams (tests replace the async builders). */
export interface SvelteAiChatDeps {
    bridge: PptxAiBridge;
    config: PptxAiConfig;
    /** Availability probe; defaults to {@link isAiAvailable}. */
    checkAvailable?: () => Promise<boolean>;
    /** Session builder; defaults to {@link createAiChatSession}. */
    createSession?: (bridge: PptxAiBridge, config: PptxAiConfig) => Promise<PptxAiChatSession>;
    /**
     * Called as each tool call starts, with the slide / element(s) it references
     * (or `null` for deck-wide tools). Lets the panel navigate + highlight the
     * canvas so the viewer mirrors what the assistant is doing in real time.
     */
    onToolTarget?: (target: ToolCanvasTarget | null) => void;
}
export declare class SvelteAiChat {
    #private;
    initState: AiChatInitState;
    initError: Error | undefined;
    /** Mirror of the session's staged proposals (refreshed imperatively). */
    proposals: ProposalView[];
    constructor(deps: SvelteAiChatDeps);
    get messages(): PptxAiUIMessage[];
    get status(): ChatStatus;
    get error(): Error | undefined;
    get isStreaming(): boolean;
    /** The live session, exposed for tests that stage a proposal directly. */
    get session(): PptxAiChatSession | undefined;
    /** Bootstrap the session + chat. Safe to call once (from the panel `$effect`). */
    init(): Promise<void>;
    send(text: string): void;
    stop(): void;
    /** Replace the whole transcript (chat-history resume / new chat). */
    setMessages(messages: PptxAiUIMessage[]): void;
    clearError(): void;
    refreshProposals(): void;
    applyProposal(id: string): void;
    rejectProposal(id: string): void;
    acceptAllProposals(): void;
}
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