"""
ⒸAngelaMos | 2026
constants.py

Centralized constants and configuration values for network traffic analyzer

Groups all magic numbers and strings into named classes to avoid hardcoded
values scattered throughout the codebase. Covers ports, byte units, chart
sizing, protocol colors, and platform-specific paths. All values use Final
annotations.

Key exports:
  Ports - Standard port numbers (HTTP=80, HTTPS=443, DNS=53)
  TimeConstants - Seconds per minute and hour for duration formatting
  ByteUnits - Byte conversion factor and size unit labels
  CaptureDefaults - Queue size, timeouts, and bandwidth sample interval
  ChartDefaults - DPI, font sizes, figure dimensions, and line style values
  ProtocolColors - Rich console colors and matplotlib hex colors per protocol
  DefaultIPs - Fallback IP for unknown packet endpoints
  PortRange - Valid port range boundaries (0-65535)
  NpcapPaths - Windows DLL paths for Npcap installation checks

Connects to:
  filters.py - imports PortRange, Ports
  analyzer.py - imports DefaultIPs, Ports
  capture.py - imports CaptureDefaults, NpcapPaths
  statistics.py - imports CaptureDefaults
  output.py - imports ByteUnits, ProtocolColors, TimeConstants
  visualization.py - imports ByteUnits, ChartDefaults, ProtocolColors
"""

from enum import IntEnum
from typing import Final


class Ports(IntEnum):
    """
    Standard network port numbers for protocol identification
    """
    HTTP = 80
    HTTPS = 443
    DNS = 53


class TimeConstants:
    """
    Time-related constants for duration formatting
    """
    SECONDS_PER_MINUTE: Final[int] = 60
    SECONDS_PER_HOUR: Final[int] = 3600


class ByteUnits:
    """
    Byte unit conversion constants
    """
    BYTES_PER_KB: Final[float] = 1024.0
    UNITS: Final[tuple[str, ...]] = ("B", "KB", "MB", "GB", "TB", "PB")


class CaptureDefaults:
    """
    Default values for packet capture operations
    """
    QUEUE_SIZE: Final[int] = 10_000
    QUEUE_TIMEOUT_SECONDS: Final[float] = 0.1
    THREAD_JOIN_TIMEOUT_SECONDS: Final[float] = 2.0
    BANDWIDTH_SAMPLE_INTERVAL_SECONDS: Final[float] = 1.0


class ChartDefaults:
    """
    Default values for matplotlib chart generation
    """
    DPI: Final[int] = 150
    FONT_SIZE_SMALL: Final[int] = 9
    FONT_SIZE_MEDIUM: Final[int] = 11
    FONT_SIZE_LARGE: Final[int] = 14
    FIGSIZE_STANDARD: Final[tuple[int, int]] = (12, 6)
    FIGSIZE_TALL: Final[tuple[int, int]] = (12, 8)
    FIGSIZE_WIDE: Final[tuple[int, int]] = (14, 6)
    FIGSIZE_SQUARE: Final[tuple[int, int]] = (10, 8)
    LINE_WIDTH_THIN: Final[float] = 0.5
    LINE_WIDTH_NORMAL: Final[int] = 2
    MARKER_SIZE: Final[int] = 3
    BAR_HEIGHT: Final[float] = 0.4
    GRID_ALPHA: Final[float] = 0.3


class ProtocolColors:
    """
    Unified color scheme for both Rich console and matplotlib charts
    """
    RICH: Final[dict[str,
                     str]] = {
                         "TCP": "cyan",
                         "UDP": "green",
                         "ICMP": "yellow",
                         "DNS": "magenta",
                         "HTTP": "blue",
                         "HTTPS": "blue",
                         "ARP": "red",
                         "OTHER": "white",
                     }

    HEX: Final[dict[str,
                    str]] = {
                        "TCP": "#3498db",
                        "UDP": "#2ecc71",
                        "ICMP": "#f1c40f",
                        "DNS": "#9b59b6",
                        "HTTP": "#e74c3c",
                        "HTTPS": "#1abc9c",
                        "ARP": "#e67e22",
                        "OTHER": "#95a5a6",
                    }


class DefaultIPs:
    """
    Default IP address values
    """
    UNKNOWN: Final[str] = "0.0.0.0"


class PortRange:
    """
    Valid port number range for validation
    """
    MIN: Final[int] = 0
    MAX: Final[int] = 65535


class NpcapPaths:
    """
    Windows Npcap installation paths for permission checking
    """
    SYSTEM32: Final[str] = r"C:\Windows\System32\Npcap\wpcap.dll"
    SYSWOW64: Final[str] = r"C:\Windows\SysWOW64\Npcap\wpcap.dll"


__all__ = [
    "ByteUnits",
    "CaptureDefaults",
    "ChartDefaults",
    "DefaultIPs",
    "NpcapPaths",
    "PortRange",
    "Ports",
    "ProtocolColors",
    "TimeConstants",
]