"""Add report_queue table for background report generation

Revision ID: 003
Revises: 38207dbbac44
Create Date: 2026-04-14
"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '003'
down_revision: Union[str, None] = '38207dbbac44'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        'report_queue',
        sa.Column('id', sa.Integer(), primary_key=True, index=True),
        sa.Column('report_name', sa.String(), nullable=False),
        sa.Column('category_id', sa.Integer(), nullable=False),
        sa.Column('status', sa.String(), nullable=False, server_default='PENDING'),
        sa.Column('progress', sa.Integer(), nullable=False, server_default='0'),
        sa.Column('message', sa.Text(), nullable=True),
        sa.Column('result_report_id', sa.Integer(), nullable=True),
        sa.Column('error', sa.Text(), nullable=True),
        sa.Column('worker_id', sa.String(), nullable=True),
        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
        sa.Column('started_at', sa.DateTime(), nullable=True),
        sa.Column('completed_at', sa.DateTime(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.now()),
    )

    op.create_index('idx_report_queue_status', 'report_queue', ['status'])
    op.create_index('idx_report_queue_created_at', 'report_queue', ['created_at'])


def downgrade() -> None:
    op.drop_index('idx_report_queue_created_at', table_name='report_queue')
    op.drop_index('idx_report_queue_status', table_name='report_queue')
    op.drop_table('report_queue')