// lib/calculators/candle.ts
// Калькулятор свечей для frontend (пример)

import type { Calculator, CalculatorField, CalculationResult } from '@/types/calculator';

const fieldSchema: CalculatorField[] = [
  { id: 'candleName', name: 'candleName', label: 'Название свечи', type: 'text', required: true },
  { id: 'weight', name: 'weight', label: 'Вес свечи, г', type: 'number', required: true },
  { id: 'waxPrice', name: 'waxPrice', label: 'Цена воска за 1 кг, руб', type: 'number', required: false },
  { id: 'wickPrice', name: 'wickPrice', label: 'Цена фитиля, руб', type: 'number', required: false },
  { id: 'aromaPrice', name: 'aromaPrice', label: 'Цена отдушки, руб', type: 'number', required: false },
  { id: 'aromaWeight', name: 'aromaWeight', label: 'Фасовка отдушки, г', type: 'number', required: false },
  { id: 'moldPrice', name: 'moldPrice', label: 'Цена формы, руб', type: 'number', required: false },
  { id: 'box', name: 'box', label: 'Упаковка, руб', type: 'number', required: false },
  { id: 'markup', name: 'markup', label: 'Наценка, %', type: 'number', required: false },
];

function round(val: number): number {
  return Math.round(val * 10) / 10;
}

function calculate(data: Record<string, any>): CalculationResult {
  const {
    weight = 0,
    waxPrice = 0,
    wickPrice = 0,
    aromaPrice = 0,
    aromaWeight = 1,
    moldPrice = 0,
    box = 0,
  } = data;

  const wax = (weight / 1000) * waxPrice;
  const wick = wickPrice;
  const aroma = ((weight * 0.08) / aromaWeight) * aromaPrice; // 8% отдушки для свечей
  const mold = moldPrice / 50; // Амортизация формы на 50 свечей
  const packaging = box;
  
  const subtotal = wax + wick + aroma + mold + packaging;
  const operational = subtotal * 0.05;
  const total = subtotal + operational;

  return {
    wax: round(wax),
    wick: round(wick),
    aroma: round(aroma),
    mold: round(mold),
    packaging: round(packaging),
    operational: round(operational),
    total: round(total),
  };
}

function getRequiredFields(): string[] {
  return fieldSchema.filter((f) => f.required).map((f) => f.name);
}

function getNumericFields(): string[] {
  return fieldSchema.filter((f) => f.type === 'number').map((f) => f.name);
}

const candleCalculator: Calculator = {
  id: 'candle',
  name: 'Свеча',
  fieldSchema,
  calculate,
  getRequiredFields,
  getNumericFields,
};

export default candleCalculator;