rd-android-app/lib/controller/product_controller.dart

import 'package:cheminova/controller/product_service.dart';
import 'package:get/get.dart';


class ProductController extends GetxController {
  final ProductService productService = ProductService();
  var products = <Map<String, dynamic>>[].obs;
  var categories = <String>[].obs; // Holds the list of categories
  var selectedCategory = Rxn<String>(); // Holds the selected category
  int _currentPage = 1;
  bool isLoading = false;

  @override
  void onInit() {
    super.onInit();
    getCategory();
    getUser();
  }

  Future<void> getUser() async {
    if (isLoading) return;
    isLoading = true;
    try {
      final category = selectedCategory.value; // Get the selected category
      final fetchedProducts = await productService.getProduct(
        _currentPage,
        category: category,
      );

      if (fetchedProducts != null) {
        products.addAll(fetchedProducts as Iterable<Map<String, dynamic>>);
      }
    } catch (e) {
      print("Error fetching products: $e");
    } finally {
      isLoading = false;
      update();
    }
  }

  Future<void> getCategory() async {
    try {
      final fetchedCategories = await productService.getCategory();
      if (fetchedCategories != null) {
        categories.assignAll(fetchedCategories.map((category) => category['categoryName'] as String));
        categories.insert(0, 'All'); // Add "All" option
      }
    } catch (e) {
      print("Error fetching categories: $e");
    }
  }

  void setCategory(String category) {
    selectedCategory.value = category == 'All' ? null : category;
    _currentPage = 1;
    products.clear();
    getUser();
  }

  void loadMoreProducts() {
    _currentPage++;
    getUser();
  }
}