"""Logical overlay models."""

from __future__ import annotations

from collections.abc import Callable
from dataclasses import dataclass, field
from typing import Any

from .types import Color, LatLon, Tag


@dataclass(slots=True)
class Overlay:
    """Base logical overlay state."""

    tag: Tag
    map_tag: Tag
    layer: str
    show: bool = True
    user_data: Any = None
    revision: int = 0

    def touch(self) -> None:
        """Mark this overlay as changed."""

        self.revision += 1


@dataclass(slots=True)
class MarkerOverlay(Overlay):
    """Logical marker overlay."""

    lat: float = 0.0
    lon: float = 0.0
    label: str | None = None
    color: Color = (255, 80, 80, 255)
    radius: float = 5.0
    show_label: bool = False
    callback: Callable[..., Any] | None = None


@dataclass(slots=True)
class PolylineOverlay(Overlay):
    """Logical polyline overlay."""

    points: tuple[LatLon, ...] = ()
    color: Color = (80, 180, 255, 255)
    thickness: float = 2.0
    closed: bool = False
    simplify: bool = True


@dataclass(slots=True)
class TrajectoryOverlay(Overlay):
    """Logical trajectory overlay."""

    points: tuple[LatLon, ...] = ()
    timestamps: tuple[float, ...] | None = None
    color: Color = (255, 180, 60, 255)
    thickness: float = 2.0
    show_points: bool = False
    point_stride: int = 1


@dataclass(slots=True)
class LayerState:
    """Logical layer visibility and ordering state."""

    name: str
    z_index: int = 0
    show: bool = True
    overlay_tags: set[Tag] = field(default_factory=set)