"""Dashboard-Layout je Benutzer.

Revision ID: 0004
Revises: 0003
Create Date: 2026-08-19
"""
from alembic import op
import sqlalchemy as sa

revision = "0004"
down_revision = "0003"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "dashboard_layouts",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("owner_id", sa.Integer(), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("layout", sa.Text(), nullable=False, server_default="[]"),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=True),
        sa.UniqueConstraint("owner_id", name="uq_dashboard_owner"),
    )
    op.create_index("ix_dashboard_layouts_owner_id", "dashboard_layouts", ["owner_id"])


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