"""add levels_by_language JSON field to users

Revision ID: 20251205_levels_by_lang
Revises: 20251204_add_vocab_lang
Create Date: 2025-12-05
"""

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import JSON


# revision identifiers, used by Alembic.
revision = '20251205_levels_by_lang'
down_revision = '20251204_add_vocab_lang'
branch_labels = None
depends_on = None


def upgrade():
    # Добавляем JSON поле для хранения уровней по языкам
    # Формат: {"en": "B1", "ja": "N4", ...}
    op.add_column('users', sa.Column('levels_by_language', JSON, nullable=True))


def downgrade():
    op.drop_column('users', 'levels_by_language')