"""Add conflict resolution columns to tasks table

Revision ID: 007
Create Date: 2026-05-20
"""
from alembic import op
import sqlalchemy as sa

# revision identifiers
revision = '007'
down_revision = '006'
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column('tasks', sa.Column('last_synced_at', sa.DateTime(timezone=True), nullable=True))
    op.add_column('tasks', sa.Column('has_conflict', sa.Boolean(), server_default='0', nullable=True))
    op.add_column('tasks', sa.Column('conflict_data', sa.Text(), nullable=True))


def downgrade() -> None:
    op.drop_column('tasks', 'conflict_data')
    op.drop_column('tasks', 'has_conflict')
    op.drop_column('tasks', 'last_synced_at')