"""add tunings table and tuning_id fk on tune_by_instrument

Revision ID: abdeb80d003e
Revises: 84db90f5499e
Create Date: 2026-06-09
"""
from alembic import op
import sqlalchemy as sa

revision = "abdeb80d003e"
down_revision = "84db90f5499e"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "tunings",
        sa.Column("id",   sa.Integer(), primary_key=True, autoincrement=True, nullable=False),
        sa.Column("name", sa.String(),  nullable=False, unique=True),
    )
    op.drop_column("tune_by_instrument", "tuning")
    op.add_column("tune_by_instrument",
                  sa.Column("tuning_id", sa.Integer(),
                            sa.ForeignKey("tunings.id", ondelete="SET NULL"),
                            nullable=True))


def downgrade() -> None:
    op.drop_column("tune_by_instrument", "tuning_id")
    op.add_column("tune_by_instrument", sa.Column("tuning", sa.String(), nullable=True))
    op.drop_table("tunings")