import type { Context } from '@netlify/functions'
import { guardMethod } from '../utils/method.js'
import { ok } from '../utils/http.js'
import { prisma } from '../utils/prisma.js'
import { withErrorBoundary } from '../utils/handler.js'

const categories = [
  { id: 'recommend', name: '推荐' },
  { id: 'homeLiving', name: '居家生活' },
  { id: 'digitalAppliance', name: '数码家电' },
  { id: 'beautyCare', name: '美妆个护' },
  { id: 'foodDrink', name: '食品饮料' },
  { id: 'motherBaby', name: '母婴玩具' },
  { id: 'fashionBag', name: '服饰鞋包' },
  { id: 'sportsOutdoor', name: '运动户外' }
]

const toProductItem = (product: Awaited<ReturnType<typeof prisma.supplierProduct.findMany>>[number]) => {
  const picInfo = Array.isArray(product.picInfo) ? product.picInfo : []
  const image = product.imageUrl || String(picInfo[0] || '')
  const price = product.price.toFixed(2)

  return {
    id: product.id,
    sku: product.sku,
    number: product.number,
    price,
    name: product.name,
    taxRate: Number(product.taxRate),
    picInfo,
    desc: product.description || '',
    detail: product.detail || product.description || '',
    originPrice: product.originPrice ? product.originPrice.toFixed(2) : price,
    image,
    imageUrl: image,
    categoryId: product.categoryId || '',
    category: product.category || '',
    tag: product.tag || '',
    sales: product.sales || '',
    stock: product.stock
  }
}

export default withErrorBoundary(async (request: Request, _context: Context) => {
  const methodResponse = guardMethod(request, ['GET'])
  if (methodResponse) return methodResponse

  const url = new URL(request.url)
  const keyword = (url.searchParams.get('keyword') || '').trim()
  const categoryId = (url.searchParams.get('categoryId') || '').trim()

  const products = await prisma.supplierProduct.findMany({
    where: {
      enabled: true,
      deleted: 0,
      ...(keyword ? { name: { contains: keyword } } : {}),
      ...(categoryId && categoryId !== 'recommend' ? { categoryId } : {})
    },
    orderBy: [
      { sortOrder: 'asc' },
      { createdAt: 'desc' }
    ]
  })

  return ok({
    categories,
    products: products.map(toProductItem)
  })
})