#!/usr/bin/env python
#
# ----------------------------------------------------------------------------
"""
ReplicaStatistics class from uka.karo.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License or (at your option) any later version.
"""
# ----------------------------------------------------------------------------

from typing import Any, Optional


class ReplicaStatistics:
    """
    Statistics for replicated objects in a distributed environment.
    
    This class is used to gather and report statistics about object
    replication in the KaRMI (Karlsruhe Remote Method Invocation) system.
    
    Note: The original Java implementation was a stub with TODO comments.
    This Python version provides a basic functional implementation.
    """
    
    def __init__(self):
        """Initialize empty replica statistics."""
        self._data: dict = {}
    
    @staticmethod
    def get_statistics(diagnostics: Any, i: int) -> Optional['ReplicaStatistics']:
        """
        Get statistics for a specific replica.
        
        Args:
            diagnostics: Diagnostics object containing replica information.
            i: Index of the replica.
        
        Returns:
            ReplicaStatistics for the specified replica, or None if not available.
        
        Note: Original Java implementation returned null (stub).
        """
        # Stub implementation - returns None as in original Java
        return None
    
    def print_report(self, title: str) -> None:
        """
        Print a statistics report.
        
        Args:
            title: Title for the report.
        
        Note: Original Java implementation was empty (stub).
        """
        # Stub implementation - prints basic report
        print(f"=== {title} ===")
        if self._data:
            for key, value in self._data.items():
                print(f"  {key}: {value}")
        else:
            print("  (no statistics available)")


