"""Dataclass models used by manifest-backed technologies."""

from dataclasses import dataclass
from typing import Any, Optional, Tuple


@dataclass(frozen=True)
class LayerSpec:
    """One canonical foundry GDS layer plus optional process metadata."""

    name: str
    layer: Tuple[int, int]
    aliases: Tuple[str, ...] = ()
    material: Optional[str] = None
    z_start: Optional[float] = None
    thickness: Optional[float] = None
    sidewall_angle: Optional[float] = None
    process: Optional[str] = None
    description: str = ""


@dataclass(frozen=True)
class XSectionLayerSpec:
    """One layer contribution inside a Nazca xsection."""

    layer: str
    growx: Optional[float] = None
    growy: Optional[float] = None
    leftedge: Optional[Tuple[float, float]] = None
    rightedge: Optional[Tuple[float, float]] = None
    overwrite: bool = True


@dataclass(frozen=True)
class XSectionSpec:
    """Named cross-section made from one or more layer contributions."""

    name: str
    layers: Tuple[XSectionLayerSpec, ...]


@dataclass(frozen=True)
class MaterialSpec:
    """Material metadata and optional refractive-index data reference."""

    name: str
    display_name: Optional[str] = None
    source_file: Optional[str] = None
    source_revision: Optional[str] = None
    data_file: Optional[str] = None
    notes: str = ""


@dataclass(frozen=True)
class ProcessLayerSpec:
    """Detailed process-stack row reserved for full process exports."""

    name: str
    gds: Any = None
    z_start_um: Optional[float] = None
    thickness_um: Optional[float] = None
    material: Optional[str] = None
    pattern_material: Optional[str] = None
    process: Optional[str] = None
    sidewall_angle: Optional[float] = None
    pattern_growth_delta_um: Optional[float] = None
    enabled: Optional[bool] = None