import 'package:get/get.dart';
import '../models/product_model.dart';
import 'package:collection/collection.dart';

import '../models/product_model1.dart';

class CartController extends GetxController {

  var cartList = <Product>[].obs;
  var cartCount = 0.obs;
  var totalPrice = 0.0.obs;
  var subtotal = 0.0.obs;
  var gstTotal = 0.0.obs;
  var grandTotal = 0.0.obs;

  // Add item to cart
  void addToCart(Product product) {
    var existingProduct = cartList.firstWhereOrNull((p) => p.id == product.id);
    if (existingProduct != null) {
      // Update quantity if already in cart
      existingProduct.quantity++;
    } else {
      // Add new product to cart
      cartList.add(product);
    }
    cartCount.value = cartList.length;
    updateTotalPrice();
  }

  void updateTotalPrice() {
    double subTotal = 0.0;
    double gstTotalAmount = 0.0;

    for (var product in cartList) {
      subTotal += product.price * product.quantity;
      gstTotalAmount += (product.price * product.quantity * (product.gst / 100));
    }

    subtotal.value = subTotal;
    gstTotal.value = gstTotalAmount;
    grandTotal.value = subtotal.value + gstTotal.value;
  }

  // Increase the quantity of a product
  void increaseQuantity(Product product) {
    final index = cartList.indexWhere((item) => item.id == product.id);
    if (index != -1) {
      cartList[index].quantity++;
      updateTotalPrice();
    }
  }

  // Decrease the quantity of a product
  void decreaseQuantity(Product product) {
    final index = cartList.indexWhere((item) => item.id == product.id);
    if (index != -1 && cartList[index].quantity > 1) {
      cartList[index].quantity--;
      updateTotalPrice();
    }
  }

  // Remove item from cart
  void removeFromCart(Product product) {
    cartList.removeWhere((item) => item.id == product.id);
    cartCount.value = cartList.length;
    updateTotalPrice();
  }
}