"""installment plans (tasa cero)

Revision ID: 961802a2f50d
Revises: 7884505b16b3
Create Date: 2026-07-03 16:00:55.026771

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
import sqlmodel
from sqlalchemy.dialects import postgresql


# revision identifiers, used by Alembic.
revision: str = '961802a2f50d'
down_revision: Union[str, Sequence[str], None] = '7884505b16b3'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('installmentplan',
    sa.Column('num_installments', sa.Integer(), nullable=False),
    sa.Column('first_installment_date', sa.DateTime(), nullable=False),
    sa.Column('total_amount', sa.Numeric(precision=15, scale=2), nullable=False),
    sa.Column('installment_amount', sa.Numeric(precision=15, scale=2), nullable=False),
    # Reuse the existing 'currency' enum type — do NOT re-create it.
    sa.Column('currency', postgresql.ENUM('CRC', 'USD', 'EUR', 'BTC', 'XMR', name='currency', create_type=False), nullable=False),
    sa.Column('notes', sqlmodel.sql.sqltypes.AutoString(), nullable=True),
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('anchor_transaction_id', sa.Integer(), nullable=False),
    sa.Column('created_at', sa.DateTime(), nullable=False),
    sa.ForeignKeyConstraint(['anchor_transaction_id'], ['transaction.id'], ondelete='CASCADE'),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_installmentplan_anchor_transaction_id'), 'installmentplan', ['anchor_transaction_id'], unique=True)
    op.add_column('transaction', sa.Column('installment_plan_id', sa.Integer(), nullable=True))
    op.add_column('transaction', sa.Column('is_installment_anchor', sa.Boolean(), server_default='false', nullable=False))
    op.create_index(op.f('ix_transaction_installment_plan_id'), 'transaction', ['installment_plan_id'], unique=False)
    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_transaction_installment_plan_id'), table_name='transaction')
    op.drop_column('transaction', 'is_installment_anchor')
    op.drop_column('transaction', 'installment_plan_id')
    op.drop_index(op.f('ix_installmentplan_anchor_transaction_id'), table_name='installmentplan')
    op.drop_table('installmentplan')
    # ### end Alembic commands ###