/**
 * MemoryManager class for managing conversation history and building prompts
 * Maintains context across agent steps with history tracking and truncation
 */
import { LLMMessage, ScreenState, AgentOutput, ActionResult, HistoryItem, MemoryState, AgentSettings } from '../types';
import { FileSystem } from './FileSystem';
export declare class MemoryManager {
    private fileSystem;
    private promptBuilder;
    private settings;
    private state;
    private currentTask;
    constructor(fileSystem: FileSystem, settings: AgentSettings);
    /**
     * Initialize a new task
     * Resets history and creates system message
     */
    addNewTask(task: string): void;
    /**
     * Create state message for current step
     * Builds user message with all context and updates history
     */
    createStateMessage(modelOutput: AgentOutput | null, result: ActionResult[] | null, stepInfo: {
        stepNumber: number;
        maxSteps: number;
    }, screenState: ScreenState): Promise<void>;
    /**
     * Update history after a step completes
     * Tracks model output, results, and any errors
     */
    updateHistory(stepNumber: number, modelOutput: AgentOutput | null, result: ActionResult[] | null, error?: string): void;
    /**
     * Add a context message (for errors, corrections, user input)
     */
    addContextMessage(message: string): void;
    /**
     * Add a system message to history items
     */
    addSystemMessageToHistory(stepNumber: number, message: string): void;
    /**
     * Get all messages for LLM
     * Returns array of messages in order: system, context, state
     */
    getMessages(): LLMMessage[];
    /**
     * Get agent history items
     */
    getAgentHistory(): HistoryItem[];
    /**
     * Get current memory state
     */
    getMemoryState(): MemoryState;
    /**
     * Clear context messages (useful after LLM processes them)
     */
    clearContextMessages(): void;
    /**
     * Add content to one-time read state
     * This content will be included once and then cleared
     */
    addToReadState(content: string): void;
    /**
     * Get current task
     */
    getCurrentTask(): string;
    /**
     * Get file system instance
     */
    getFileSystem(): FileSystem;
    /**
     * Format action results for history tracking
     */
    private formatActionResultsForHistory;
    /**
     * Truncate history to max items
     * Keeps most recent items within the limit
     */
    private truncateHistory;
}
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