export interface Scent {
  id: number
  name: string
  description?: string | null
}

export interface Category {
  id: number
  name: string
  imageUrl?: string | null
  _count?: { products: number }
  createdAt?: string
  updatedAt?: string
}

export interface Variant {
  id: number
  size: string
  price: number | null
  bomItems?: BomItem[]
}

export interface RawMaterial {
  id: number
  name: string
  unit: string
  pricePerUnit: number
}

export interface BomItem {
  id?: number
  rawMaterialId: number
  rawMaterial?: RawMaterial
  quantity: number
}

export interface ProductImage {
  id: number
  url: string
  order: number
}

export interface Product {
  id: number
  name: string
  description: string | null
  details: string | null
  price: number | null
  categoryId: number
  category: Category
  scent: Scent
  variants: Variant[]
  images: ProductImage[]
}

export const API_BASE = (typeof import.meta !== 'undefined' && (import.meta as any).env?.VITE_API_URL) 
  || ((globalThis as any).process?.env?.VITE_API_URL)
  || 'http://localhost:3000/api'

export const CATEGORY_IMAGES: Record<string, string> = {
  'Oil Ozone': '/images/oil_ozone.png',
  'Aroma Oil': '/images/oil_ozone.png',
  'Reed Diffuser': '/images/reed_diffuser.png',
  'Room Spray': '/images/reed_diffuser.png',
  'Car Diffuser': '/images/oil_ozone.png',
}

export function getCategoryImage(name: string): string {
  return CATEGORY_IMAGES[name] ?? '/images/oil_ozone.png'
}

export function formatPrice(price: number | null | undefined): string {
  if (price == null) return '—'
  return `฿${price.toLocaleString()}`
}

export interface Hero {
  id: number
  tagline: string
  title: string
  description: string
  imageUrl: string
  buttonText: string
  buttonLink: string
  isActive: boolean
  createdAt: string
  updatedAt: string
}

export interface StoreSettings {
  id: number
  shippingFee: number
  bankName: string
  bankAccountName: string
  bankAccountNumber: string
  pointsEarnRate: number
}

export interface OrderItem {
  id: number
  orderId: number
  productId: number
  variantId?: number | null
  quantity: number
  priceAtPurchase: number
  productName: string
  variantSize?: string | null
  productImage?: string | null
}

export interface Order {
  id: number
  customerName: string
  customerEmail: string
  customerPhone: string
  shippingAddress: string
  
  subtotal?: number
  promoLevel1Name?: string | null
  promoLevel1Disc?: number
  promoLevel2Name?: string | null
  promoLevel2Disc?: number
  
  couponCode?: string | null
  discountAmount?: number
  
  pointsUsed?: number
  pointsDiscount?: number
  pointsEarned?: number

  totalAmount: number
  shippingFee: number
  status: string
  paymentSlipUrl?: string | null
  customerId?: number | null
  customer?: any | null
  items: OrderItem[]
  createdAt: string
  updatedAt: string
}

export interface Article {
  id: number
  slug: string
  title: string
  coverImage: string | null
  content: string
  isPublished: boolean
  createdAt: string
  updatedAt: string
}

export interface CartItem {
  cartItemId: string
  productId: number
  variantId?: number | null
  quantity: number
  price: number
  productName: string
  variantSize?: string | null
  productImage?: string | null
}