Daday (Kastamonu) Tekstil & Konfeksiyon İçin Vibe Coding

// lib/fashiontech/garmentCostEngine.ts
export function calculateGarmentCost(fabricGsm: number, fabricWidthCm: number, patternLengthCm: number, orderQuantity: number) {
  // Fabric consumption in kg per piece
  const areaM2 = (patternLengthCm / 100) * (fabricWidthCm / 100);
  const fabricKgPerPiece = (areaM2 * fabricGsm) / 1000 * 1.08; // %8 fire/çekme payı

  const fabricCostKgEUR = 8.5; // Örnek süprem kumaş kg fiyatı
  const fabricCost = fabricKgPerPiece * fabricCostKgEUR;

  const cutAndSewCostEUR = 1.8; // Kesim ve dikim işçiliği
  const printEmbroideryEUR = 0.6; // Baskı / nakış
  const accessoriesBOMEUR = 0.45; // İplik, yıkama talimatı, polybag

  const totalUnitEUR = fabricCost + cutAndSewCostEUR + printEmbroideryEUR + accessoriesBOMEUR;
  return {
    fabricKgPerPiece: round(fabricKgPerPiece, 3),
    unitCostEUR: round(totalUnitEUR, 2),
    recommendedFOBPriceEUR: round(totalUnitEUR * 1.30, 2), // %30 FOB marji
    totalOrderEUR: Math.round(totalUnitEUR * 1.30 * orderQuantity)
  };
}