"""Unit tests for the Aurora ID system (app/core/ids.py) — section 3."""

from __future__ import annotations

import pytest

from app.core.ids import (
    ENTITY_PREFIXES,
    aurora_id,
    is_valid_aurora_id,
    new_uuid7,
    parse_aurora_id,
)


def test_new_uuid7_is_unique_and_well_formed():
    ids = {new_uuid7() for _ in range(1000)}
    assert len(ids) == 1000
    for value in list(ids)[:5]:
        assert len(value) == 36  # canonical hyphenated form


def test_aurora_id_roundtrips_through_parse():
    u = new_uuid7()
    aid = aurora_id("movie", u)
    assert aid.startswith("aur_movie_")
    assert parse_aurora_id(aid, expected_type="movie") == u


def test_aurora_id_never_leaks_provider_identity():
    # Aurora IDs must not be derived from or embed provider IDs (section 3).
    u = new_uuid7()
    aid = aurora_id("movie", u)
    assert "550" not in aid  # a plausible TMDb id, just shouldn't appear
    assert "tmdb" not in aid


def test_every_entity_prefix_produces_a_parseable_id():
    for entity_type in ENTITY_PREFIXES:
        aid = aurora_id(entity_type, new_uuid7())
        assert is_valid_aurora_id(aid, expected_type=entity_type)


def test_parse_rejects_wrong_entity_type():
    aid = aurora_id("movie", new_uuid7())
    with pytest.raises(ValueError):
        parse_aurora_id(aid, expected_type="person")
    assert is_valid_aurora_id(aid, expected_type="person") is False


@pytest.mark.parametrize(
    "malformed",
    [
        "",
        "not-an-aurora-id",
        "aur_movie_",
        "aur_movie_tooshort",
        "aur_unknownprefix_" + "0" * 26,
        "aur_movie_" + "!" * 26,
    ],
)
def test_parse_rejects_malformed_ids(malformed: str):
    with pytest.raises(ValueError):
        parse_aurora_id(malformed)
    assert is_valid_aurora_id(malformed) is False


def test_aurora_ids_sort_in_creation_order():
    # UUIDv7 is time-ordered, and the Crockford base32 encoding preserves
    # byte order, so IDs generated later should sort later.
    first = aurora_id("movie", new_uuid7())
    second = aurora_id("movie", new_uuid7())
    assert first < second