package com.chantha.jdbc.jpa.service.product

import com.chantha.jdbc.jpa.model.OrderDetail
import com.chantha.jdbc.jpa.model.Product
import com.chantha.jdbc.jpa.model.view.OrderDetailView
import com.chantha.jdbc.jpa.model.view.ProductWithOrderDetail
import com.chantha.jdbc.jpa.repo.ProductRepo
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.stereotype.Service
import java.util.*

@Service
class ProductServiceImpl @Autowired constructor(private val productRepo: ProductRepo) : ProductService {

    override fun fetchAllProducts(): List<ProductWithOrderDetail> {
        return productRepo.findAll().map { toView(it) }
    }

    private fun toView(data: Product): ProductWithOrderDetail {
        val view = ProductWithOrderDetail()
        view.productId = data.productId
        view.productName = data.productName
        view.details = data.orderDetails.map { toOrderDetailView(it) }
        return view
    }

    private fun toOrderDetailView(data: OrderDetail): OrderDetailView {
        val view = OrderDetailView()
        view.orderDetailId = data.orderDetailId
        view.price = data.price
        view.qty = data.qty
        return view
    }
}