import { Router } from 'express'
import { getDb } from '../db/connection.js'
import type { Product, SizeStock } from '../../shared/types.js'

export const productsRouter = Router()

interface ProductRow { id: string; name: string; slug: string; description: string; price_sats: number; images: string; sizes: string; category: string; is_active: number; created_at: string; updated_at: string }

export function rowToProduct(row: ProductRow): Product {
  return { id: row.id, name: row.name, slug: row.slug, description: row.description, priceSats: row.price_sats, images: JSON.parse(row.images) as string[], sizes: JSON.parse(row.sizes) as SizeStock[], category: row.category, isActive: row.is_active === 1, createdAt: row.created_at, updatedAt: row.updated_at }
}

productsRouter.get('/', (req, res) => {
  const db = getDb()
  const category = req.query.category as string | undefined
  let rows: ProductRow[]
  if (category) { rows = db.prepare('SELECT * FROM products WHERE is_active = 1 AND category = ? ORDER BY created_at DESC').all(category) as ProductRow[] }
  else { rows = db.prepare('SELECT * FROM products WHERE is_active = 1 ORDER BY created_at DESC').all() as ProductRow[] }
  res.json(rows.map(rowToProduct))
})

productsRouter.get('/:slug', (req, res) => {
  const db = getDb()
  const row = db.prepare('SELECT * FROM products WHERE slug = ? AND is_active = 1').get(req.params.slug) as ProductRow | undefined
  if (!row) { res.status(404).json({ error: { code: 'NOT_FOUND', message: 'Product not found' } }); return }
  res.json(rowToProduct(row))
})