"""chat thread snapshot

Revision ID: 794baf50635b
Revises: 961802a2f50d
Create Date: 2026-07-04 17:49:14.914103

"""
from typing import Sequence, Union

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

# revision identifiers, used by Alembic.
revision: str = '794baf50635b'
down_revision: Union[str, Sequence[str], None] = '961802a2f50d'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('chatthreadsnapshot',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('scope', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
    sa.Column('thread_id', sqlmodel.sql.sqltypes.AutoString(), nullable=False),
    sa.Column('messages', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), server_default='[]', nullable=False),
    sa.Column('state', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), nullable=True),
    sa.Column('interrupt', sa.JSON().with_variant(postgresql.JSONB(astext_type=sa.Text()), 'postgresql'), nullable=True),
    sa.Column('updated_at', sa.DateTime(), nullable=False),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('scope', 'thread_id')
    )
    op.create_index(op.f('ix_chatthreadsnapshot_scope'), 'chatthreadsnapshot', ['scope'], unique=False)
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_chatthreadsnapshot_scope'), table_name='chatthreadsnapshot')
    op.drop_table('chatthreadsnapshot')
    # ### end Alembic commands ###