from typing import Dict, List, Any
from scapy.all import Packet

from .base import FrameTypeInterface


class IENAStats(FrameTypeInterface):
    """IENA Protocol Statistics"""
    def __init__(self):
        super().__init__()
        self.name = "IENA"
        self.count = 0
        self.bytes = 0
        self.first_time = None
        self.last_time = None
        self.key_fields = set()
        self.sequence_gaps = 0
        self.last_sequence = None
    
    def add(self, timestamp: float, size: int, packet: Packet):
        self.count += 1
        self.bytes += size
        if self.first_time is None:
            self.first_time = timestamp
        self.last_time = timestamp
        
        # Simulate IENA specific processing
        if packet:
            # Example: extract IENA key field and sequence
            # key_field = extract_iena_key(packet)
            # sequence = extract_iena_sequence(packet)
            pass
    
    def get_summary_dict(self) -> Dict[str, Any]:
        duration = (self.last_time or 0) - (self.first_time or 0)
        return {
            'Pkts': self.count,
            'Bytes': self.bytes,
            'Duration': round(duration, 3),
            'Key Fields': len(self.key_fields),
            'Seq Gaps': self.sequence_gaps,
            'Pkt/s': round(self.count / duration, 1) if duration > 0 else 0
        }
    
    def get_column_definitions(self) -> List[tuple]:
        return [
            ('Pkts', 'd'),
            ('Bytes', 'd'),
            ('Duration', '.3f'),
            ('Key Fields', 'd'),
            ('Seq Gaps', 'd'),
            ('Pkt/s', '.1f')
        ]