add structure

lib/model/product_model.dart

@@ -0,0 +1,119 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:logging/logging.dart';
+import 'package:fcs/vo/product.dart';
+import 'package:fcs/vo/setting.dart';
+
+import 'base_model.dart';
+import 'constants.dart';
+import 'firebase_helper.dart';
+
+class ProductModel extends BaseModel {
+final log = Logger('ProductModel');
+
+  List<Product> products = [];
+  List<Product> tempProducts = [];
+
+  List<ProductPrice> get getPrices {
+    List<ProductPrice> productPrices = [];
+    this.products.forEach((p) => productPrices.addAll(p.getPrices));
+    productPrices.sort((p1, p2) => p1.compareTo(p2));
+    return productPrices;
+  }
+
+  String getProductName(String productID) {
+    return products.firstWhere((p) => p.id == productID).name;
+  }
+
+  Product getProduct(String productID) {
+    return products.firstWhere((p) => p.id == productID);
+  }
+
+  List<Product> get productsToEdit {
+    // clone products
+    tempProducts = products.map((p) => Product.clone(p)).toList();
+    tempProducts.sort((p1, p2) => p1.displayOrder.compareTo(p2.displayOrder));
+    // set old price with price
+    tempProducts.forEach((p) {
+      p.oldPirce = p.price;
+      p.action = "update";
+    });
+
+    return tempProducts;
+  }
+
+  void saveProduct(Product product, String name, price, displayOrder, int color,
+      bool isDisable) {
+    if (product == null) {
+      tempProducts.add(Product(
+          action: "create",
+          name: name,
+          price: int.parse(price),
+          color: color,
+          displayOrder: int.parse(displayOrder),
+          isDisable: isDisable));
+    } else {
+      Product _product = product;
+      _product.name = name;
+      _product.price = int.parse(price);
+      _product.color = color;
+      _product.displayOrder = int.parse(displayOrder);
+      _product.isDisable = isDisable;
+      if (_product.id == null) {
+        _product.action = "create";
+      } else {
+        _product.action = "update";
+      }
+    }
+    notifyListeners();
+  }
+
+  void deleteProduct(Product product) {
+    if (product == null) {
+      return;
+    }
+    if (product.id == null) {
+      tempProducts.remove(product);
+    } else {
+      Product _product = tempProducts.firstWhere((p) => p.id == product.id);
+      _product.action = "delete";
+    }
+    notifyListeners();
+  }
+
+  @override
+  void initSetting(Setting setting) {
+    super.initSetting(setting);
+
+    try {
+      getQuerySnapshot(
+              "/$biz_collection/${setting.okEnergyId}/$product_collection")
+          .listen((QuerySnapshot snapshot) {
+        products.clear();
+        products = snapshot.documents.map((documentSnapshot) {
+          var data = Product.fromMap(
+              documentSnapshot.data, documentSnapshot.documentID);
+          return data;
+        }).toList();
+        products.sort((p1, p2) => p1.displayOrder.compareTo(p2.displayOrder));
+        notifyListeners();
+      }).onError((e) {
+        log.warning("Error! $e");
+      });
+    } catch (e) {
+      log.warning("Error!! $e");
+    }
+  }
+
+  @override
+  logout() async {
+    tempProducts = [];
+  }
+
+  updateProducts(List<Product> products) async {
+    var items = [];
+    products.forEach((p) {
+      if (p.action != null) items.add(p.toMap());
+    });
+    await request("/products", "PUT", payload: items, token: await getToken());
+  }
+}