"""Auswertungen."""

from datetime import date

from fastapi import APIRouter, Query

from app.api.deps import DbSession
from app.core.clock import today
from app.schemas.report import MonthComparisonOut, MonthReportOut, TotalsOut
from app.services.reports import Totals, month_report

router = APIRouter(prefix="/reports", tags=["reports"])


def _totals(value: Totals) -> TotalsOut:
    return TotalsOut(income=value.income, expenses=value.expenses, balance=value.balance)


@router.get(
    "/month",
    response_model=MonthReportOut,
    summary="Monatsübersicht",
    description="Einnahmen, Ausgaben, Saldo, Plan-Ist-Vergleich, Aufteilung in fixe "
    "und variable Kosten sowie die Veränderung gegenüber dem Vormonat.",
)
async def read_month_report(
    session: DbSession,
    month: date | None = Query(
        default=None, description="Beliebiger Tag im gewünschten Monat; Vorgabe ist heute."
    ),
) -> MonthReportOut:
    report = await month_report(session, month or today())
    return MonthReportOut(
        month=report.month,
        planned=_totals(report.planned),
        actual=_totals(report.actual),
        previous_planned=_totals(report.previous_planned),
        previous_actual=_totals(report.previous_actual),
        delta_to_previous=MonthComparisonOut(
            income=report.income_delta,
            expenses=report.expenses_delta,
            balance=report.balance_delta,
        ),
        fixed_costs=report.fixed_costs,
        variable_costs=report.variable_costs,
        reserves=report.reserves,
        available_after_fixed=report.available_after_fixed,
        confirmed_count=report.confirmed_count,
        open_count=report.open_count,
        skipped_count=report.skipped_count,
    )