"""cf whatif — what-if анализ с произвольными множителями."""
import typer

from infrastructure.cli.i18n import t
from infrastructure.cli.services import (
    build_services,
    console,
    convert_value,
    fmt_amount,
    load_model,
    resolve_currency,
)

app = typer.Typer()

CURRENCY_OPTION = typer.Option(None, "--currency", "-c", help=t("cmd.forecast.opt.currency"))


@app.command()
def whatif(
    income: float = typer.Option(1.0, "--income", "-i", help=t("cmd.whatif.opt.income")),
    expense: float = typer.Option(1.0, "--expense", "-e", help=t("cmd.whatif.opt.expense")),
    growth: float = typer.Option(1.0, "--growth", "-g", help=t("cmd.whatif.opt.growth")),
    months: int = typer.Option(12, "--months", "-m", help=t("cmd.whatif.opt.months")),
    currency: str | None = CURRENCY_OPTION,
) -> None:
    """What-if анализ с произвольными множителями"""
    model = load_model()
    target_curr, symbol = resolve_currency(model, currency)
    _, scenario_service, _, converter = build_services(model)
    base_curr = model.base_currency
    result = scenario_service.what_if(income, expense, growth, months)

    balance = convert_value(converter, result["total_balance"], base_curr, target_curr)
    income_v = convert_value(converter, result["total_income"], base_curr, target_curr)
    expenses = convert_value(converter, result["total_expenses"], base_curr, target_curr)
    console.print(f"[bold]{t('cmd.whatif.title')}[/bold]")
    console.print(t("cmd.whatif.params", income=income, expense=expense, growth=growth))
    console.print(f"{t('cmd.scenario.label.balance')}: {fmt_amount(balance, target_curr, symbol)}")
    console.print(f"{t('cmd.scenario.label.income')}: {fmt_amount(income_v, target_curr, symbol)}")
    console.print(f"{t('cmd.scenario.label.expenses')}: {fmt_amount(expenses, target_curr, symbol)}")