"""Add file_signatures table for incremental loading

Revision ID: incremental_file_signatures
Revises: 1d0bb7fede17
Create Date: 2025-01-27 12:00:00.000000

"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql
from uuid import uuid4

# revision identifiers, used by Alembic.
revision = 'incremental_file_signatures'
down_revision = '1d0bb7fede17'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('file_signatures',
        sa.Column('id', sa.UUID(), nullable=False, default=uuid4),
        sa.Column('data_id', sa.UUID(), nullable=True),
        sa.Column('file_path', sa.String(), nullable=True),
        sa.Column('file_size', sa.Integer(), nullable=True),
        sa.Column('content_hash', sa.String(), nullable=True),
        sa.Column('total_blocks', sa.Integer(), nullable=True),
        sa.Column('block_size', sa.Integer(), nullable=True),
        sa.Column('strong_len', sa.Integer(), nullable=True),
        sa.Column('signature_data', sa.LargeBinary(), nullable=True),
        sa.Column('blocks_info', sa.JSON(), nullable=True),
        sa.Column('created_at', sa.DateTime(timezone=True), nullable=True),
        sa.Column('updated_at', sa.DateTime(timezone=True), nullable=True),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_file_signatures_data_id'), 'file_signatures', ['data_id'], unique=False)
    op.create_index(op.f('ix_file_signatures_content_hash'), 'file_signatures', ['content_hash'], unique=False)
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_file_signatures_content_hash'), table_name='file_signatures')
    op.drop_index(op.f('ix_file_signatures_data_id'), table_name='file_signatures')
    op.drop_table('file_signatures')
    # ### end Alembic commands ###