"""A learner's own reading voice.

It was a dropdown in the quiz player, beside the question — the one control on
that screen with nothing to do with answering, and one a learner would set once
and never touch again. That is a setting.

Revision ID: e7f8091a2b3c
Revises: d6e7f8091a2b
"""
import sqlalchemy as sa
from alembic import op

revision = "e7f8091a2b3c"
down_revision = "d6e7f8091a2b"
branch_labels = None
depends_on = None


def upgrade():
    if "tts_voice" not in {c["name"] for c in sa.inspect(op.get_bind()).get_columns("users")}:
        op.add_column("users", sa.Column("tts_voice", sa.String(), nullable=True))


def downgrade():
    op.drop_column("users", "tts_voice")