import pytest

from amanuensis.db import *
import amanuensis.backend.character as charq
from amanuensis.errors import ArgumentError


def test_create_character(db: DbContext, lexicon_with_editor, make_user):
    """Test creating a character."""
    lexicon, user = lexicon_with_editor
    kwargs = {
        'db': db,
        'user_id': user.id,
        'lexicon_id': lexicon.id,
        'name': 'Character Name',
        'signature': 'Signature',
    }

    # Bad argument types
    with pytest.raises(ArgumentError):
        charq.create(**{**kwargs, 'name': b'bytestring'})
    with pytest.raises(ArgumentError):
        charq.create(**{**kwargs, 'name': None})
    with pytest.raises(ArgumentError):
        charq.create(**{**kwargs, 'signature': b'bytestring'})

    # Bad character name
    with pytest.raises(ArgumentError):
        charq.create(**{**kwargs, 'name': ' '})

    # Signature is auto-populated
    char = charq.create(**{**kwargs, 'signature': None})
    assert char.signature is not None

    # User must be in lexicon
    new_user = make_user()
    with pytest.raises(ArgumentError):
        charq.create(**{**kwargs, 'user_id': new_user.id})


def test_character_limits(db: DbContext, lexicon_with_editor):
    """Test lexicon settings limiting character creation."""
    lexicon: Lexicon
    user: User
    lexicon, user = lexicon_with_editor

    # Set character limit to one and create a character
    lexicon.character_limit = 1
    db.session.commit()
    char1 = charq.create(db, lexicon.id, user.id, 'Test Character 1', signature=None)
    assert char1.id, 'Failed to create character 1'

    # Creating a second character should fail
    with pytest.raises(ArgumentError):
        char2 = charq.create(db, lexicon.id, user.id, 'Test Character 2', signature=None)
        assert char2

    # Raising the limit to 2 should allow a second character
    lexicon.character_limit = 2
    db.session.commit()
    char2 = charq.create(db, lexicon.id, user.id, 'Test Character 2', signature=None)
    assert char2.id, 'Failed to create character 2'

    # Creating a third character should fail
    with pytest.raises(ArgumentError):
        char3 = charq.create(db, lexicon.id, user.id, 'Test Character 3', signature=None)
        assert char3

    # Setting the limit to null should allow a third character
    lexicon.character_limit = None
    db.session.commit()
    char2 = charq.create(db, lexicon.id, user.id, 'Test Character 3', signature=None)
    assert char2.id, 'Failed to create character 3'