# frozen_string_literal: true
require "json"

PRODUCTS = [
  { id: "p-001", name: "Laptop Pro 15",    price: 1299.99, category: "electronics", stock: 14 },
  { id: "p-002", name: "Wireless Mouse",   price: 29.99,   category: "electronics", stock: 203 },
  { id: "p-003", name: "Standing Desk",    price: 549.00,  category: "furniture",   stock: 7 },
  { id: "p-004", name: "USB-C Hub 7-in-1", price: 49.99,   category: "electronics", stock: 88 },
  { id: "p-005", name: "Ergonomic Chair",  price: 399.00,  category: "furniture",   stock: 3 },
  { id: "p-006", name: "Monitor 4K 27\"",  price: 699.00,  category: "electronics", stock: 22 },
  { id: "p-007", name: "Notebook A5",      price: 4.99,    category: "stationery",  stock: 500 },
  { id: "p-008", name: "Pen Set 12pc",     price: 9.99,    category: "stationery",  stock: 320 },
].freeze

def handler
  # Простая фильтрация по category (query string не доступен в v1 Perl-style,
  # но для Ruby v3 env возвращаем весь каталог)
  total = PRODUCTS.length
  in_stock = PRODUCTS.count { |p| p[:stock] > 0 }
  by_cat = PRODUCTS.group_by { |p| p[:category] }.transform_values(&:length)

  {
    status: "ok",
    total: total,
    in_stock: in_stock,
    by_category: by_cat,
    products: PRODUCTS,
  }.to_json
end