"""add dictionary_sense_link table

Revision ID: 0010
Revises: 0009
Create Date: 2026-04-10

"""
from typing import Sequence, Union

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

revision: str = "0010"
down_revision: Union[str, None] = "0009"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "dictionary_sense_link",
        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
        sa.Column(
            "sense_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("dictionary_sense.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("link_text", sa.Text(), nullable=False),
        sa.Column("link_target", sa.Text(), nullable=False),
        sa.Column("target_lemma_id", postgresql.UUID(as_uuid=True), nullable=True),
    )
    op.create_index("ix_dictionary_sense_link_sense_id", "dictionary_sense_link", ["sense_id"])
    op.create_index("ix_dictionary_sense_link_target_lemma_id", "dictionary_sense_link", ["target_lemma_id"])


def downgrade() -> None:
    op.drop_index("ix_dictionary_sense_link_target_lemma_id", table_name="dictionary_sense_link")
    op.drop_index("ix_dictionary_sense_link_sense_id", table_name="dictionary_sense_link")
    op.drop_table("dictionary_sense_link")