import datetime

import pytest

from amanuensis.db import DbContext
import amanuensis.backend.lexicon as lexiq
from amanuensis.errors import ArgumentError


def test_create_lexicon(db: DbContext):
    """Test new game creation."""
    kwargs = {"name": "Test", "title": None, "prompt": "A test Lexicon game"}
    # Test name constraints
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": None})
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": ""})
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": " "})
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": ".."})
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": "\x00"})
    with pytest.raises(ArgumentError):
        lexiq.create(db, **{**kwargs, "name": "space in name"})

    # Validate that creation populates fields, including timestamps
    before = datetime.datetime.utcnow() - datetime.timedelta(seconds=1)
    new_lexicon = lexiq.create(db, **kwargs)
    after = datetime.datetime.utcnow() + datetime.timedelta(seconds=1)
    assert new_lexicon
    assert new_lexicon.id is not None
    assert new_lexicon.created is not None
    assert before < new_lexicon.created
    assert new_lexicon.created < after

    # No duplicate lexicon names
    with pytest.raises(ArgumentError):
        duplicate = lexiq.create(db, **kwargs)
        assert duplicate