"""Reviewed native component module exports and their compilation dependencies."""
from __future__ import annotations

import re

EXPORTS = {
    "properties": frozenset({
        "native_properties_init", "native_temperature_ph_context", "native_density_context",
        "native_gas_init", "native_gas", "native_gas_context", "native_medium_init",
        "native_density", "native_temperature_ph", "native_viscosity",
        "native_medium_gas", "native_medium_gas_context", "native_polytropic_gas_context",
        "native_jacobian_gas",
        "native_jacobian_scalar_get", "native_jacobian_scalar_put",
    }),
    "orifice": frozenset({"native_orifice", "native_orifice_context", "native_medium_orifice", "native_medium_orifice_context"}),
    "pipe": frozenset({"native_pipe_resistance", "native_pipe_flow", "native_pipe_flow_context",
                        "native_pipe_flow_cached", "native_pipe_flow_cached_context",
                        "native_pipe_diagnostics", "native_pipe_diagnostics_context"}),
    "mechanics": frozenset({"native_contact", "native_stop_motion", "native_limit_force", "native_dry_friction"}),
    "signal": frozenset({"native_signal", "native_signal_break"}),
}
DEPENDENCIES = {"orifice": ("properties",), "pipe": ("properties",)}


def component_modules(source: str) -> tuple[str, ...]:
    # Generated C refers to these functions directly. Include identifier uses
    # (also function pointers), conservatively including any comments/strings.
    identifiers = set(re.findall(r"\bnative_[A-Za-z0-9_]+\b", source))
    selected = {name for name, exports in EXPORTS.items() if identifiers & exports}
    pending = list(selected)
    while pending:
        for dependency in DEPENDENCIES.get(pending.pop(), ()):
            if dependency not in selected:
                selected.add(dependency)
                pending.append(dependency)
    return tuple(name for name in EXPORTS if name in selected)