Initial commit

app_code/lib/presenters/home_presenter.dart

@@ -0,0 +1,167 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:carousel_slider/carousel_controller.dart';
+import 'package:grostore/apis/banners_api.dart';
+import 'package:grostore/apis/category_api.dart';
+import 'package:grostore/apis/product_api.dart';
+import 'package:grostore/app_lang.dart';
+import 'package:grostore/custom_ui/Button.dart';
+import 'package:grostore/custom_ui/Image_view.dart';
+import 'package:grostore/custom_ui/toast_ui.dart';
+import 'package:grostore/helpers/device_info_helper.dart';
+import 'package:grostore/models/common/category_info.dart';
+import 'package:grostore/models/home_banner_response.dart';
+import 'package:grostore/models/product_mini_response.dart';
+import 'package:grostore/models/category_response.dart';
+import 'package:provider/provider.dart';
+import 'package:flutter/material.dart';
+
+class HomePresenter extends ChangeNotifier {
+  static BuildContext? context;
+
+  setContext(BuildContext context) {
+    HomePresenter.context = context;
+  }
+
+  int currentSlider = 0;
+
+  List<Widget> homeBannerImages = [];
+  List<CategoryInfo> topCategoryList = [];
+  List<ProductMini> bestSellingProductList = [];
+  List<ProductMini> products = [];
+  int page = 1;
+
+  bool isTopCategoryInitial = false;
+  bool isHomeBannerInitial = false;
+  bool isBestSellingProductInitial = false;
+  bool isAllProductInitial = false;
+  ScrollController homeScrollController = ScrollController();
+
+  fetchAll() {
+    getProducts();
+    fetchBannerImages();
+    fetchTopCategories();
+    fetBestSellingProducts();
+  }
+
+  Widget bannerImageSimple(BannerData data) {
+    return Container(
+      margin: EdgeInsets.symmetric(horizontal: 5),
+      child: Button(
+        minWidth: getWidth(context),
+        onPressed: () {},
+        child: ImageView(
+          url: data.image,
+          width: getWidth(context),
+          height: 200,
+          fit: BoxFit.cover,
+        ),
+      ),
+    );
+  }
+
+  getProducts() async {
+    var productResponse = await ProductApi.getAllProducts(page: page);
+
+    if (productResponse.statusCode == 200) {
+      if (productResponse.object.data.isEmpty && page > 1) {
+        ToastUi.simpleToast(
+            context!, AppLang.local(context!).no_more_data);
+        return;
+      }
+      page++;
+      print(productResponse.object.data.length);
+      isAllProductInitial = true;
+      products.addAll(productResponse.object.data);
+      notifyListeners();
+    } else {
+      ToastUi.simpleToast(context!, AppLang.local(context!).something_went_wrong);
+    }
+  }
+
+  onChangeBannerIndex(index) {
+    currentSlider = index;
+    notifyListeners();
+  }
+
+  fetchBannerImages() async {
+    homeBannerImages = [];
+    var bannerOneResponse = await BannersApi.homeBanner(context!);
+    if (bannerOneResponse.statusCode == 200) {
+      bannerOneResponse.object.data.forEach((slider) {
+        homeBannerImages.add(bannerImageSimple(slider));
+      });
+      isHomeBannerInitial = true;
+
+      notifyListeners();
+    }
+  }
+
+  fetchTopCategories() async {
+    var categoryResponse = await CategoryApi.topCategory();
+    if (categoryResponse.statusCode == 200) {
+      topCategoryList.addAll(categoryResponse.object.data);
+      isTopCategoryInitial = true;
+      notifyListeners();
+    }
+  }
+
+  fetBestSellingProducts() async {
+    var productResponse = await ProductApi.bestSelling(context!);
+
+    if (productResponse.statusCode == 200) {
+      bestSellingProductList.addAll(productResponse.object.data);
+      isBestSellingProductInitial = true;
+      notifyListeners();
+    } else {
+      ToastUi.show(context!, AppLang.local(context!).something_went_wrong);
+    }
+  }
+
+  reset() {
+    page=1;
+    currentSlider = 0;
+    homeBannerImages = [];
+    topCategoryList = [];
+    bestSellingProductList = [];
+    products.clear();
+    isAllProductInitial = false;
+    isTopCategoryInitial = false;
+    isHomeBannerInitial = false;
+    isBestSellingProductInitial = false;
+  }
+
+  Future<void> onRefresh() async {
+    reset();
+    fetchAll();
+  }
+
+  changeCurrentSlider(index) {
+    currentSlider = index;
+    notifyListeners();
+  }
+
+  mainScrollListener(BuildContext context) {
+    homeScrollController.addListener(() {
+      //print("position: " + xcrollController.position.pixels.toString());
+      //print("max: " + xcrollController.position.maxScrollExtent.toString());
+
+      if (homeScrollController.position.pixels ==
+          homeScrollController.position.maxScrollExtent) {
+        ToastUi.simpleToast(context, "Loading more...");
+        getProducts();
+      }
+    });
+  }
+
+  initState(BuildContext context) {
+    mainScrollListener(context);
+    reset();
+    fetchAll();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    reset();
+  }
+}