"""Native frontend types and API client live under periscope/src."""

from __future__ import annotations

import re
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "periscope" / "src" / "frontend" / "src" / "lib"
DEP = ROOT / "periscope" / "dependency" / "frontend" / "src" / "lib"


def _exports(path: Path) -> set[str]:
    text = path.read_text(encoding="utf-8")
    names = set(re.findall(r"^export (?:async )?function (\w+)", text, re.M))
    names |= set(re.findall(r"^export (?:interface|type|class|const) (\w+)", text, re.M))
    return names


def test_frontend_lib_is_src():
    for name in ("api.ts", "types.ts", "utils.ts"):
        path = SRC / name
        assert path.is_file(), name
        head = path.read_text(encoding="utf-8")[:400]
        assert "Native Periscope overlay" not in head


def test_api_keeps_page_exports():
    src = _exports(SRC / "api.ts")
    dep = _exports(DEP / "api.ts")
    missing = dep - src
    assert not missing, sorted(missing)


def test_types_keep_page_exports():
    src = _exports(SRC / "types.ts")
    dep = _exports(DEP / "types.ts")
    missing = dep - src
    assert not missing, sorted(missing)