"""add transfer retry fields

Revision ID: b1c2d3e4f5a6
Revises: a1b2c3d4e5f6
Create Date: 2026-05-23 17:15:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = 'b1c2d3e4f5a6'
down_revision: Union[str, None] = 'a1b2c3d4e5f6'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.add_column('pay_transfer', sa.Column('retry_count', sa.Integer(), nullable=False, server_default='0', comment='反查重试次数'))
    op.add_column('pay_transfer', sa.Column('next_retry_at', sa.DateTime(), nullable=True, comment='下次反查时间'))
    op.execute("""
        CREATE INDEX idx_transfer_retry ON pay_transfer (next_retry_at)
        WHERE status = 'DEALING' AND retry_count < 4
    """)


def downgrade() -> None:
    op.execute("DROP INDEX IF EXISTS idx_transfer_retry")
    op.drop_column('pay_transfer', 'next_retry_at')
    op.drop_column('pay_transfer', 'retry_count')