import { ReactiveController, ReactiveControllerHost } from 'lit';
import { ChatMessage, MessageItem, ToolCall, ToolDefinition, AssistantResponse, ResponseFeedback } from './types.js';
import { MessageStartEvent, MessageDeltaEvent, MessageEndEvent, ToolCallStartEvent, ToolCallArgsEvent, ToolCallEndEvent, ToolResultEvent } from './agent-adapter.js';
export interface MessageStateControllerConfig {
    tools: Map<string, ToolDefinition>;
    onThreadSettled?: () => void;
}
/**
 * Reactive controller that manages message and tool call state for the chatbot.
 *
 * Responsibilities:
 * - Maintains ordered list of messages and tool calls (messageItems)
 * - Tracks tool call state and lifecycle
 * - Provides CRUD operations for messages
 * - Triggers host re-renders when state changes
 */
export declare class MessageStateController implements ReactiveController {
    #private;
    private _host;
    private _config;
    private _messageItems;
    private _toolCalls;
    private _activeResponse;
    constructor(_host: ReactiveControllerHost, _config: MessageStateControllerConfig);
    hostConnected(): void;
    hostDisconnected(): void;
    updateConfig(config: Partial<MessageStateControllerConfig>): void;
    get messageItems(): MessageItem[];
    getToolCall(id: string): ToolCall | undefined;
    getActiveResponse(): AssistantResponse | null;
    startResponse(): AssistantResponse;
    addTextToResponse(messageId: string, content: string, event?: MessageStartEvent): void;
    appendTextDelta(messageId: string, delta: string, event?: MessageDeltaEvent): void;
    markTextComplete(messageId: string, event?: MessageEndEvent): void;
    addToolCallToResponse(toolCall: ToolCall, event?: ToolCallStartEvent): void;
    updateToolCallInResponse(toolCallId: string, updates: Partial<ToolCall>, eventData?: {
        eventType: 'tool-call-args' | 'tool-call-end';
        event: ToolCallArgsEvent | ToolCallEndEvent;
    }): void;
    completeToolCallInResponse(toolCallId: string, result: unknown, event?: ToolResultEvent): void;
    tryFinalizeResponse(): void;
    addMessageItem(item: MessageItem): void;
    addMessage(message: ChatMessage, event?: MessageStartEvent): void;
    getMessage(id: string): ChatMessage | undefined;
    updateMessageStatus(id: string, status: ChatMessage['status'], event?: MessageEndEvent): void;
    updateMessageContent(id: string, content: string): void;
    removeMessageItem(index: number): void;
    clearMessages(): void;
    removeMessageItemsFrom(index: number): void;
    /**
     * Reconstructs the message hierarchy for API compatibility.
     * Converts assistant responses back to ChatMessage format with tool calls.
     */
    getMessages(): ChatMessage[];
    setMessages(messages: ChatMessage[]): void;
    setResponseFeedback(responseId: string, feedback: ResponseFeedback): void;
}