"""Initial schema — Phase 1 models and indexes

Revision ID: e46c47c38302
Revises: 
Create Date: 2026-05-27 07:12:00.808546

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = 'e46c47c38302'
down_revision = None
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('accounts',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=200), nullable=False),
    sa.Column('type', sa.String(length=20), nullable=False),
    sa.Column('institution_name', sa.String(length=200), nullable=True),
    sa.Column('is_active', sa.Boolean(), nullable=False),
    sa.Column('current_balance', sa.Numeric(precision=10, scale=2), nullable=True),
    sa.Column('apr', sa.Numeric(precision=6, scale=4), nullable=True),
    sa.Column('min_payment', sa.Numeric(precision=10, scale=2), nullable=True),
    sa.Column('credit_limit', sa.Numeric(precision=10, scale=2), nullable=True),
    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('categories',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=100), nullable=False),
    sa.Column('is_system', sa.Boolean(), nullable=False),
    sa.Column('is_active', sa.Boolean(), nullable=False),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('name', name='uq_categories_name')
    )
    op.create_table('debts',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=200), nullable=False),
    sa.Column('current_balance', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('interest_rate', sa.Numeric(precision=6, scale=4), nullable=False),
    sa.Column('min_payment', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('due_date', sa.Text(), nullable=True),
    sa.Column('is_active', sa.Boolean(), nullable=False),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('import_batches',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('filename', sa.String(length=255), nullable=False),
    sa.Column('uploaded_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
    sa.Column('status', sa.String(length=20), nullable=False),
    sa.Column('row_count', sa.Integer(), nullable=True),
    sa.Column('committed_at', sa.DateTime(), nullable=True),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('paydown_plans',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('strategy', sa.String(length=30), nullable=False),
    sa.Column('extra_monthly', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('status', sa.String(length=20), nullable=False),
    sa.Column('archived_at', sa.DateTime(), nullable=True),
    sa.Column('last_recalculated_at', sa.DateTime(), nullable=True),
    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('settings',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('monthly_income', sa.Numeric(precision=10, scale=2), nullable=True),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('bills',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('name', sa.String(length=200), nullable=False),
    sa.Column('amount', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('due_day', sa.Integer(), nullable=False),
    sa.Column('due_date', sa.Text(), nullable=True),
    sa.Column('payee', sa.String(length=200), nullable=True),
    sa.Column('is_active', sa.Boolean(), nullable=False),
    sa.Column('category_id', sa.Integer(), nullable=True),
    sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ondelete='RESTRICT'),
    sa.PrimaryKeyConstraint('id')
    )
    with op.batch_alter_table('bills', schema=None) as batch_op:
        batch_op.create_index('idx_bills_due_date', ['due_date'], unique=False)

    op.create_table('budgets',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('month', sa.Integer(), nullable=False),
    sa.Column('year', sa.Integer(), nullable=False),
    sa.Column('amount', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('category_id', sa.Integer(), nullable=False),
    sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ondelete='RESTRICT'),
    sa.PrimaryKeyConstraint('id'),
    sa.UniqueConstraint('category_id', 'month', 'year', name='uq_budgets_category_month_year')
    )
    op.create_table('merchant_mappings',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('raw_pattern', sa.Text(), nullable=False),
    sa.Column('normalized', sa.Text(), nullable=False),
    sa.Column('user_confirmed', sa.Boolean(), nullable=False),
    sa.Column('category_id', sa.Integer(), nullable=True),
    sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ondelete='SET NULL'),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('paydown_balance_updates',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('balance', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
    sa.Column('account_id', sa.Integer(), nullable=False),
    sa.ForeignKeyConstraint(['account_id'], ['accounts.id'], ondelete='RESTRICT'),
    sa.PrimaryKeyConstraint('id')
    )
    with op.batch_alter_table('paydown_balance_updates', schema=None) as batch_op:
        batch_op.create_index('idx_balance_updates_account', ['account_id', 'updated_at'], unique=False)

    op.create_table('paydown_plan_cards',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('monthly_allocation', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('starting_balance', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('starting_apr', sa.Numeric(precision=6, scale=4), nullable=False),
    sa.Column('plan_id', sa.Integer(), nullable=False),
    sa.Column('account_id', sa.Integer(), nullable=False),
    sa.ForeignKeyConstraint(['account_id'], ['accounts.id'], ondelete='RESTRICT'),
    sa.ForeignKeyConstraint(['plan_id'], ['paydown_plans.id'], ondelete='CASCADE'),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_table('transactions',
    sa.Column('id', sa.Integer(), nullable=False),
    sa.Column('date', sa.Text(), nullable=False),
    sa.Column('merchant_normalized', sa.String(length=200), nullable=False),
    sa.Column('amount', sa.Numeric(precision=10, scale=2), nullable=False),
    sa.Column('is_credit', sa.Boolean(), nullable=False),
    sa.Column('is_manual', sa.Boolean(), nullable=False),
    sa.Column('notes', sa.Text(), nullable=True),
    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
    sa.Column('account_id', sa.Integer(), nullable=False),
    sa.Column('category_id', sa.Integer(), nullable=True),
    sa.Column('dedup_hash', sa.String(length=64), nullable=True),
    sa.Column('issuer', sa.String(length=100), nullable=True),
    sa.Column('merchant_raw', sa.Text(), nullable=True),
    sa.Column('confidence_score', sa.Float(), nullable=True),
    sa.Column('import_batch_id', sa.Integer(), nullable=True),
    sa.ForeignKeyConstraint(['account_id'], ['accounts.id'], ondelete='RESTRICT'),
    sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ondelete='RESTRICT'),
    sa.ForeignKeyConstraint(['import_batch_id'], ['import_batches.id'], ondelete='SET NULL'),
    sa.PrimaryKeyConstraint('id')
    )
    with op.batch_alter_table('transactions', schema=None) as batch_op:
        batch_op.create_index('idx_transactions_account', ['account_id'], unique=False)
        batch_op.create_index('idx_transactions_category', ['category_id'], unique=False)
        batch_op.create_index('idx_transactions_date', ['date'], unique=False)

    # ### end Alembic commands ###

    # Seed 14 system categories (AR architecture: system categories are seeded at DB init)
    op.bulk_insert(
        sa.table(
            'categories',
            sa.column('name', sa.String),
            sa.column('is_system', sa.Boolean),
            sa.column('is_active', sa.Boolean),
        ),
        [
            {'name': 'Housing',        'is_system': True, 'is_active': True},
            {'name': 'Groceries',      'is_system': True, 'is_active': True},
            {'name': 'Dining',         'is_system': True, 'is_active': True},
            {'name': 'Transportation', 'is_system': True, 'is_active': True},
            {'name': 'Utilities',      'is_system': True, 'is_active': True},
            {'name': 'Healthcare',     'is_system': True, 'is_active': True},
            {'name': 'Entertainment',  'is_system': True, 'is_active': True},
            {'name': 'Shopping',       'is_system': True, 'is_active': True},
            {'name': 'Subscriptions',  'is_system': True, 'is_active': True},
            {'name': 'Personal Care',  'is_system': True, 'is_active': True},
            {'name': 'Debt Payments',  'is_system': True, 'is_active': True},
            {'name': 'Income',         'is_system': True, 'is_active': True},
            {'name': 'Transfers',      'is_system': True, 'is_active': True},
            {'name': 'Uncategorized',  'is_system': True, 'is_active': True},
        ],
    )


def downgrade():
    # Remove seeded system categories first (before dropping the table)
    op.execute("DELETE FROM categories WHERE is_system = 1")

    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('transactions', schema=None) as batch_op:
        batch_op.drop_index('idx_transactions_date')
        batch_op.drop_index('idx_transactions_category')
        batch_op.drop_index('idx_transactions_account')

    op.drop_table('transactions')
    op.drop_table('paydown_plan_cards')
    with op.batch_alter_table('paydown_balance_updates', schema=None) as batch_op:
        batch_op.drop_index('idx_balance_updates_account')

    op.drop_table('paydown_balance_updates')
    op.drop_table('merchant_mappings')
    op.drop_table('budgets')
    with op.batch_alter_table('bills', schema=None) as batch_op:
        batch_op.drop_index('idx_bills_due_date')

    op.drop_table('bills')
    op.drop_table('settings')
    op.drop_table('paydown_plans')
    op.drop_table('import_batches')
    op.drop_table('debts')
    op.drop_table('categories')
    op.drop_table('accounts')
    # ### end Alembic commands ###