# Currency conversion utilities for API boundary
from decimal import Decimal
from typing import Union


def gtq_to_centavos(gtq_amount: Union[float, int, str]) -> int:
    """Convert GTQ to centavos for database storage"""
    return int(Decimal(str(gtq_amount)) * 100)


def centavos_to_gtq(centavos: int) -> float:
    """Convert centavos to GTQ for API responses"""
    return float(centavos) / 100


def format_gtq_currency(centavos: int) -> str:
    """Format centavos as GTQ currency string"""
    gtq_amount = centavos_to_gtq(centavos)
    return f"Q{gtq_amount:.2f}"


# Conversion helpers for API responses
def deposit_db_to_api(deposit_db) -> dict:
    """Convert database deposit model to API response"""
    return {
        "id": deposit_db.id,
        "client_id": deposit_db.client_id,
        "amount_gtq": centavos_to_gtq(deposit_db.amount),
        "currency": deposit_db.currency,
        "status": deposit_db.status,
        "notes": deposit_db.notes,
        "created_at": deposit_db.created_at,
        "confirmed_at": deposit_db.confirmed_at
    }


def balance_summary_db_to_api(balance_db) -> dict:
    """Convert database balance summary to API response"""
    return {
        "client_id": balance_db.client_id,
        "total_deposits_gtq": centavos_to_gtq(balance_db.total_deposits),
        "total_payments_gtq": centavos_to_gtq(balance_db.total_payments),
        "remaining_balance_gtq": centavos_to_gtq(balance_db.remaining_balance),
        "currency": balance_db.currency
    }