/**
 * MCP Tool Handler
 *
 * Handles execution of MCP tools (mcp_*) from allowed_tools.
 * - Checks MCP availability before execution
 * - Triggers approval workflow on first use
 * - Executes tool calls via MCPClientManager
 * - Logs results to processing feedback and audit log
 */
import { type MCPTool } from '../types/command.types.js';
import type { MCPApprovalCacheService } from './mcp-approval-cache.service.js';
import type { MCPApprovalWorkflow } from './mcp-approval-workflow.js';
import type { MCPAuditLoggerService } from './mcp-audit-logger.service.js';
import type { MCPAvailabilityService } from './mcp-availability.service.js';
import type { MCPClientManagerService } from './mcp-client-manager.service.js';
/**
 * Result of MCP tool execution
 */
export interface MCPToolExecutionResult {
    /** Tool execution duration in ms */
    durationMs: number;
    /** Error message if failed */
    error?: string;
    /** Tool output */
    output: unknown;
    /** Server ID */
    serverId: string;
    /** Whether execution succeeded */
    success: boolean;
    /** Tool name */
    toolName: string;
}
/**
 * MCP Tool Handler
 */
export declare class MCPToolHandler {
    private clientManager;
    private availabilityService;
    private approvalCache;
    private auditLogger;
    private approvalWorkflow;
    /** Track which servers have been connected in this session */
    private connectedServers;
    constructor(clientManager: MCPClientManagerService, availabilityService: MCPAvailabilityService, approvalCache: MCPApprovalCacheService, auditLogger: MCPAuditLoggerService, approvalWorkflow: MCPApprovalWorkflow);
    /**
     * Check availability of MCP tools and display status
     * Called at command start to show which MCPs are available
     */
    checkAndDisplayAvailability(mcpTools: MCPTool[]): Promise<void>;
    /**
     * Execute an MCP tool
     * Handles connection, approval, and execution
     */
    executeTool(mcpTool: MCPTool, toolName: string, args: Record<string, unknown>): Promise<MCPToolExecutionResult>;
    /**
     * Ensure a server is connected, handling approval if needed
     */
    private ensureServerConnected;
    /**
     * Request user approval for MCP server connection
     */
    private requestApproval;
    /**
     * Get list of available tools from a connected MCP server
     */
    getAvailableTools(mcpTool: MCPTool): string[];
    /**
     * Check if a server is currently connected
     */
    isServerConnected(mcpTool: MCPTool): boolean;
    /**
     * Disconnect all connected servers
     */
    disconnectAll(): Promise<void>;
    /**
     * Reset state for new command execution
     */
    reset(): void;
}
/**
 * Get the MCP Tool Handler instance
 */
export declare function getMCPToolHandler(clientManager: MCPClientManagerService, availabilityService: MCPAvailabilityService, approvalCache: MCPApprovalCacheService, auditLogger: MCPAuditLoggerService, approvalWorkflow: MCPApprovalWorkflow): MCPToolHandler;
/**
 * Reset the singleton (for testing)
 */
export declare function resetMCPToolHandler(): void;
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