"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.calculateCheckRass = calculateCheckRass;
function startOfDay(date) {
    const d = new Date(date);
    d.setHours(0, 0, 0, 0);
    return d;
}
function calculateCheckRass(checks, baseDate = new Date()) {
    if (checks.length === 0) {
        return {
            checkCount: 0,
            totalAmount: 0,
            nearestDueDate: null,
            farthestDueDate: null,
            rassDays: 0,
            rassDate: null,
        };
    }
    const base = startOfDay(baseDate);
    let totalAmount = 0;
    let weightedDays = 0;
    const dueDates = [];
    for (const check of checks) {
        const due = startOfDay(new Date(check.dueDate));
        dueDates.push(due);
        const days = Math.max(0, Math.round((due.getTime() - base.getTime()) / (1000 * 60 * 60 * 24)));
        totalAmount += check.amount;
        weightedDays += check.amount * days;
    }
    const rassDays = totalAmount > 0 ? Math.round(weightedDays / totalAmount) : 0;
    const rassDate = new Date(base);
    rassDate.setDate(rassDate.getDate() + rassDays);
    dueDates.sort((a, b) => a.getTime() - b.getTime());
    return {
        checkCount: checks.length,
        totalAmount,
        nearestDueDate: dueDates[0]?.toISOString() ?? null,
        farthestDueDate: dueDates[dueDates.length - 1]?.toISOString() ?? null,
        rassDays,
        rassDate: rassDate.toISOString(),
    };
}
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