"""parent-child-index

Revision ID: e19037032219
Revises: 01d6889832f7
Create Date: 2024-11-22 07:01:17.550037

"""
from alembic import op
import models as models
import sqlalchemy as sa


def _is_pg(conn):
    return conn.dialect.name == "postgresql"


# revision identifiers, used by Alembic.
revision = 'e19037032219'
down_revision = 'd7999dfa4aae'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    conn = op.get_bind()
    
    if _is_pg(conn):
        op.create_table('child_chunks',
        sa.Column('id', models.types.StringUUID(), server_default=sa.text('uuid_generate_v4()'), nullable=False),
        sa.Column('tenant_id', models.types.StringUUID(), nullable=False),
        sa.Column('dataset_id', models.types.StringUUID(), nullable=False),
        sa.Column('document_id', models.types.StringUUID(), nullable=False),
        sa.Column('segment_id', models.types.StringUUID(), nullable=False),
        sa.Column('position', sa.Integer(), nullable=False),
        sa.Column('content', sa.Text(), nullable=False),
        sa.Column('word_count', sa.Integer(), nullable=False),
        sa.Column('index_node_id', sa.String(length=255), nullable=True),
        sa.Column('index_node_hash', sa.String(length=255), nullable=True),
        sa.Column('type', sa.String(length=255), server_default=sa.text("'automatic'::character varying"), nullable=False),
        sa.Column('created_by', models.types.StringUUID(), nullable=False),
        sa.Column('created_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP(0)'), nullable=False),
        sa.Column('updated_by', models.types.StringUUID(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP(0)'), nullable=False),
        sa.Column('indexing_at', sa.DateTime(), nullable=True),
        sa.Column('completed_at', sa.DateTime(), nullable=True),
        sa.Column('error', sa.Text(), nullable=True),
        sa.PrimaryKeyConstraint('id', name='child_chunk_pkey')
        )
    else:
        op.create_table('child_chunks',
        sa.Column('id', models.types.StringUUID(), nullable=False),
        sa.Column('tenant_id', models.types.StringUUID(), nullable=False),
        sa.Column('dataset_id', models.types.StringUUID(), nullable=False),
        sa.Column('document_id', models.types.StringUUID(), nullable=False),
        sa.Column('segment_id', models.types.StringUUID(), nullable=False),
        sa.Column('position', sa.Integer(), nullable=False),
        sa.Column('content', models.types.LongText(), nullable=False),
        sa.Column('word_count', sa.Integer(), nullable=False),
        sa.Column('index_node_id', sa.String(length=255), nullable=True),
        sa.Column('index_node_hash', sa.String(length=255), nullable=True),
        sa.Column('type', sa.String(length=255), server_default=sa.text("'automatic'"), nullable=False),
        sa.Column('created_by', models.types.StringUUID(), nullable=False),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.current_timestamp(), nullable=False),
        sa.Column('updated_by', models.types.StringUUID(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.current_timestamp(), nullable=False),
        sa.Column('indexing_at', sa.DateTime(), nullable=True),
        sa.Column('completed_at', sa.DateTime(), nullable=True),
        sa.Column('error', models.types.LongText(), nullable=True),
        sa.PrimaryKeyConstraint('id', name='child_chunk_pkey')
        )
    
    with op.batch_alter_table('child_chunks', schema=None) as batch_op:
        batch_op.create_index('child_chunk_dataset_id_idx', ['tenant_id', 'dataset_id', 'document_id', 'segment_id', 'index_node_id'], unique=False)

    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('child_chunks', schema=None) as batch_op:
        batch_op.drop_index('child_chunk_dataset_id_idx')

    op.drop_table('child_chunks')
    # ### end Alembic commands ###