// JavaScript/Node.js Example
const apiKey = 'your-api-key';
const calculatorId = 'calc-123';

// Get calculator details
async function getCalculator(id) {
  const response = await fetch(`https://api.kalkulink.com/calculators/${id}`, {
    headers: {
      'Authorization': `Bearer ${apiKey}`,
      'Content-Type': 'application/json'
    }
  });

  if (!response.ok) {
    throw new Error(`HTTP error! status: ${response.status}`);
  }

  return await response.json();
}

// Perform calculation
async function calculate(id, inputs) {
  const response = await fetch(`https://api.kalkulink.com/calculators/${id}/calculate`, {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${apiKey}`,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ inputs })
  });

  return await response.json();
}

// Usage
const calculator = await getCalculator('calc-123');
const result = await calculate('calc-123', {
  principal: 100000000,
  rate: 12,
  years: 5
});

console.log('Monthly payment:', result.monthlyPayment);

{
  "id": "calc-123",
  "title": "Kalkulator Pinjaman KPR",
  "description": "Hitung cicilan rumah dengan berbagai pilihan tenor",
  "category": "finance",
  "isPublic": true,
  "fields": [
    {
      "id": "field-1",
      "name": "principal",
      "label": "Jumlah Pinjaman",
      "type": "number",
      "required": true,
      "min": 50000000,
      "max": 5000000000,
      "prefix": "Rp "
    },
    {
      "id": "field-2",
      "name": "rate",
      "label": "Suku Bunga (%)",
      "type": "number",
      "required": true,
      "min": 1,
      "max": 30,
      "suffix": "%"
    }
  ],
  "formulas": [
    {
      "id": "formula-1",
      "name": "monthlyPayment",
      "label": "Cicilan Bulanan",
      "expression": "principal * (rate/100/12) * pow(1 + rate/100/12, years*12) / (pow(1 + rate/100/12, years*12) - 1)",
      "prefix": "Rp ",
      "suffix": "/bulan"
    }
  ],
  "createdAt": "2024-01-15T10:30:00Z",
  "updatedAt": "2024-01-20T14:22:00Z"
}