import pytest

from id_configurator.config import Configuration
from id_configurator.context import Context

CONFIG = Configuration.model_validate(
    {"uuid": "12345678-1234-5678-1234-567812345678", "organisation": "InterDiode"}
)


def make_context(tmp_path, with_src: bool = True) -> Context:
    dst = tmp_path / "dst"
    dst.mkdir()
    src = None
    if with_src:
        src = tmp_path / "src"
        src.mkdir()
    return Context(config=CONFIG, dst=dst, src=src)


def test_dst_path_within_destination(tmp_path) -> None:
    context = make_context(tmp_path)
    resolved = context.dst_path("etc/foo.conf")
    assert resolved == context.dst / "etc" / "foo.conf"


def test_dst_path_rejects_escape(tmp_path) -> None:
    context = make_context(tmp_path)
    with pytest.raises(ValueError, match="refusing to write outside"):
        context.dst_path("../escape.conf")


def test_src_path_without_src(tmp_path) -> None:
    context = make_context(tmp_path, with_src=False)
    assert context.src_path("etc/foo.conf") is None


def test_src_path_with_src(tmp_path) -> None:
    context = make_context(tmp_path)
    resolved = context.src_path("etc/foo.conf")
    assert resolved == context.src / "etc" / "foo.conf"


def test_write_file_creates_parents_and_content(tmp_path) -> None:
    context = make_context(tmp_path)
    path = context.write_file("etc/nested/foo.conf", b"hello")
    assert path.read_bytes() == b"hello"
    assert path.stat().st_mode & 0o777 == 0o644


def test_read_src_file_without_src(tmp_path) -> None:
    context = make_context(tmp_path, with_src=False)
    assert context.read_src_file("etc/foo.conf") is None


def test_read_src_file_missing(tmp_path) -> None:
    context = make_context(tmp_path)
    assert context.read_src_file("etc/missing.conf") is None


def test_read_src_file_present(tmp_path) -> None:
    context = make_context(tmp_path)
    (context.src / "foo.conf").write_bytes(b"existing")
    assert context.read_src_file("foo.conf") == b"existing"


def test_iter_src_dir_without_src(tmp_path) -> None:
    context = make_context(tmp_path, with_src=False)
    assert context.iter_src_dir("some/dir") == []


def test_iter_src_dir_missing_dir(tmp_path) -> None:
    context = make_context(tmp_path)
    assert context.iter_src_dir("missing-dir") == []


def test_iter_src_dir_lists_only_files(tmp_path) -> None:
    context = make_context(tmp_path)
    target = context.src / "certs"
    target.mkdir()
    (target / "a.crt").write_bytes(b"a")
    (target / "b.crt").write_bytes(b"b")
    (target / "subdir").mkdir()
    result = context.iter_src_dir("certs")
    assert [entry.name for entry in result] == ["a.crt", "b.crt"]


def test_glob_src_without_src(tmp_path) -> None:
    context = make_context(tmp_path, with_src=False)
    assert context.glob_src("usr/lib/python3.*") == []


def test_glob_src_matches_pattern(tmp_path) -> None:
    context = make_context(tmp_path)
    (context.src / "usr/lib/python3.11").mkdir(parents=True)
    (context.src / "usr/lib/python3.12").mkdir(parents=True)
    (context.src / "usr/lib/python-legacy").mkdir(parents=True)
    result = context.glob_src("usr/lib/python3.*")
    assert [entry.name for entry in result] == ["python3.11", "python3.12"]