"""Create event_locks table

Revision ID: 049
Revises: 048
"""
from alembic import op
import sqlalchemy as sa

revision = "049"
down_revision = "048"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "event_locks",
        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
        sa.Column("event_id", sa.Integer(), sa.ForeignKey("calendar_events.id", ondelete="CASCADE"), nullable=False, unique=True),
        sa.Column("locked_by", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("locked_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.Column("expires_at", sa.DateTime(), nullable=True),
        sa.Column("is_permanent", sa.Boolean(), nullable=False, server_default="false"),
    )
    op.create_index("ix_event_locks_expires_at", "event_locks", ["expires_at"])


def downgrade() -> None:
    op.drop_index("ix_event_locks_expires_at", table_name="event_locks")
    op.drop_table("event_locks")