"""Create memorial_timeline_events table

Revision ID: 0020
Revises: 0019
Create Date: 2026-06-25 00:00:00.000000

Changes:
  1. CREATE memorial_timeline_events table with all columns matching the ORM model.

Purpose: The memorial_timeline_events table was defined in the ORM model
(MemorialTimelineEvent) but never included in any Alembic migration. Any
query that loads a Memorial with its timeline_events relationship (selectinload)
raises psycopg.errors.UndefinedTable, causing HTTP 500 on POST /records/{id}/memorial
and on GET /records/{id}.
"""
from typing import Sequence, Union

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

revision: str = "0020"
down_revision: Union[str, None] = "0019"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "memorial_timeline_events",
        sa.Column(
            "id",
            postgresql.UUID(as_uuid=True),
            server_default=sa.text("gen_random_uuid()"),
            nullable=False,
        ),
        sa.Column(
            "tenant_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("accounts.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column(
            "memorial_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("memorials.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("event_date", sa.DateTime(timezone=True), nullable=True),
        sa.Column("title", sa.String(255), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("sort_order", sa.Integer(), nullable=False, server_default="0"),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("NOW()"),
            nullable=False,
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("NOW()"),
            onupdate=sa.text("NOW()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        "ix_memorial_timeline_events_tenant_id",
        "memorial_timeline_events",
        ["tenant_id"],
    )
    op.create_index(
        "ix_memorial_timeline_events_memorial_id",
        "memorial_timeline_events",
        ["memorial_id"],
    )


def downgrade() -> None:
    op.drop_index(
        "ix_memorial_timeline_events_memorial_id",
        table_name="memorial_timeline_events",
    )
    op.drop_index(
        "ix_memorial_timeline_events_tenant_id",
        table_name="memorial_timeline_events",
    )
    op.drop_table("memorial_timeline_events")