Add message functionality, placing order, and add to cart in firebase…

… database

lib/consts/firebase_consts.dart

@@ -9,3 +9,6 @@ User? currentUser = auth.currentUser;
 const usersCollection = "users";
 const productsCollection = "products";
 const cartCollection = "cart";
+const chatsCollection = "chats";
+const messagesCollection = "messages";
+const ordersCollection = "orders";

lib/consts/list.dart

@@ -45,3 +45,6 @@ const itemDetailsButtonsList = [
 
 const profileButtonList = [wishlist, orders, messages];
 const profileButtonIconsList = [icOrder, icOrder, icMessages];
+
+const paymentMethodsImgList = [imgCod, imgStripe, imgPaypal];
+const paymentMethhodsList = [cod, stripe, paypal];

lib/consts/strings.dart

@@ -17,6 +17,7 @@ const signup = "Sign up";
 const loggedin = "Logged in successfully";
 const loggedout = "Logged ou successfully";
 const updated = "Updated";
+const typeMessage = "Type a message...";
 
 const createNewAccount = "or, create new account";
 const loginWith = "Log in with";
@@ -74,3 +75,13 @@ const wishlist = "Wish List",
     oldPass = "Old Password",
     newPass = "New Password",
     wrongOldPass = "Wrong Old Password";
+
+// shipping screen string
+const address = "Address",
+    city = "City",
+    state = "State",
+    postalCode = "Postal Code",
+    phone = "Phone";
+
+// payment methods string
+const paypal = "Paypal", stripe = "Stripe", cod = "Cash of Delivery";

lib/controllers/cart_controller.dart

@@ -1,8 +1,24 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:emart/consts/consts.dart';
+import 'package:emart/controllers/home_controller.dart';
 import 'package:get/get.dart';
 
 class CartCotroller extends GetxController {
   var totalPrice = 0.obs;
 
+  // text editing controller
+  TextEditingController addressController = TextEditingController();
+  TextEditingController cityController = TextEditingController();
+  TextEditingController stateController = TextEditingController();
+  TextEditingController postalCodeController = TextEditingController();
+  TextEditingController phoneController = TextEditingController();
+
+  // payment index
+  var paymentIndex = 0.obs;
+
+  late dynamic productSnapshot;
+  var products = [];
+
   // calculate total price of item present in cart
   calculateTotalPrice(data) {
     totalPrice.value = 0;
@@ -11,4 +27,48 @@ class CartCotroller extends GetxController {
           totalPrice.value + int.parse(data[price]['total_price'].toString());
     }
   }
+
+  // change payment index
+  changePaymentIndex(index) {
+    paymentIndex.value = index;
+  }
+
+  // order placing
+  placeMyOrder({required orderPaymentMethod, required totalAmount}) async {
+    await getProductDetails();
+
+    await firestore.collection(ordersCollection).doc().set({
+      'order_code': "223322",
+      'order_date': FieldValue.serverTimestamp(),
+      'order_by': currentUser!.uid,
+      'order_by_name': Get.find<HomeController>().userName,
+      'order_by_email': currentUser!.email,
+      'order_by_address': addressController.text,
+      'order_by_city': cityController.text,
+      'order_by_state': stateController.text,
+      'order_by_phone': phoneController.text,
+      'order_by_postal_code': postalCodeController.text,
+      'shipping_method': "Home Delivery",
+      'payment_method': orderPaymentMethod,
+      'order_placed': true,
+      'order_confirmed': false,
+      'order_delivered': false,
+      'order_on_delivery': false,
+      'total_amount': totalAmount,
+      'orders': FieldValue.arrayUnion(products),
+    });
+  }
+
+  // product details
+  getProductDetails() {
+    products.clear();
+    for (var i = 0; i < productSnapshot.length; i++) {
+      products.add({
+        'color': productSnapshot[i]['color'],
+        'image': productSnapshot[i]['image'],
+        'quantity': productSnapshot[i]['quantity'],
+        'title': productSnapshot[i]['title'],
+      });
+    }
+  }
 }

lib/controllers/chat_controller.dart

@@ -0,0 +1,70 @@
+// ignore_for_file: curly_braces_in_flow_control_structures
+
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:emart/controllers/home_controller.dart';
+import 'package:get/get.dart';
+import 'package:emart/consts/consts.dart';
+
+class ChatController extends GetxController {
+  @override
+  void onInit() {
+    getChatId();
+    super.onInit();
+  }
+
+  var chats = firestore.collection(chatsCollection);
+
+  var friendName = Get.arguments[0];
+  var friendId = Get.arguments[1];
+
+  var senderName = Get.find<HomeController>().userName;
+  var currentId = currentUser!.uid;
+
+  TextEditingController msgController = TextEditingController();
+
+  dynamic chatDocId;
+
+  var isLoading = false.obs;
+
+  getChatId() async {
+    isLoading(true);
+    await chats
+        .where('users', isEqualTo: {friendId: null, currentId: null})
+        .limit(1)
+        .get()
+        .then((QuerySnapshot snapshot) {
+          if (snapshot.docs.isNotEmpty)
+            chatDocId = snapshot.docs.single.id;
+          else
+            chats.add({
+              'created_on': null,
+              'last_message': '',
+              'users': {friendId: null, currentId: null},
+              'toId': '',
+              'fromId': '',
+              'friend_name': friendName,
+              'sender_name': senderName,
+            }).then((value) {
+              chatDocId = value.id;
+            });
+        });
+    isLoading(false);
+  }
+
+  sendMessage(String msg) async {
+    if (msg.trim().isNotEmpty) {
+      chats.doc(chatDocId).update({
+        'created_on': FieldValue.serverTimestamp(),
+        'last_message': msg,
+        'toId': friendId,
+        'fromId': currentId,
+      });
+
+      chats.doc(chatDocId).collection(messagesCollection).doc().set({
+        'created_on': FieldValue.serverTimestamp(),
+        'message': msg,
+        'uid': currentId,
+      });
+    }
+  }
+}

lib/controllers/home_controller.dart

@@ -1,5 +1,26 @@
+import 'package:emart/consts/consts.dart';
 import 'package:get/get.dart';
 
 class HomeController extends GetxController {
   var currentNavIndex = 0.obs;
+
+  var userName = '';
+
+  @override
+  void onInit() {
+    getUserName();
+    super.onInit();
+  }
+
+  getUserName() async {
+    var n = await firestore
+        .collection(usersCollection)
+        .where('id', isEqualTo: currentUser!.uid)
+        .get()
+        .then((value) {
+      if (value.docs.isNotEmpty) return value.docs.single['name'];
+    });
+
+    userName = n;
+  }
 }

lib/controllers/product_controller.dart

@@ -1,3 +1,6 @@
+// ignore_for_file: curly_braces_in_flow_control_structures
+
+import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:emart/consts/consts.dart';
 import 'package:emart/models/category_model.dart';
 import 'package:flutter/services.dart';
@@ -8,6 +11,7 @@ class ProductController extends GetxController {
   var quantity = 0.obs;
   var colorIndex = 0.obs;
   var totalPrice = 0.obs;
+  var isFav = false.obs;
 
   getSubCategories(title) async {
     subCat.clear();
@@ -61,4 +65,27 @@ class ProductController extends GetxController {
     totalPrice.value = 0;
     colorIndex.value = 0;
   }
+
+  addToWishList(docId, context) async {
+    firestore.collection(productsCollection).doc(docId).set({
+      'p_wishlist': FieldValue.arrayUnion([currentUser!.uid])
+    }, SetOptions(merge: true));
+    isFav(true);
+    VxToast.show(context, msg: "Added to Wishlist");
+  }
+
+  removeFromWishList(docId, context) async {
+    firestore.collection(productsCollection).doc(docId).set({
+      'p_wishlist': FieldValue.arrayRemove([currentUser!.uid])
+    }, SetOptions(merge: true));
+    isFav(false);
+    VxToast.show(context, msg: "Remove from Wishlist");
+  }
+
+  checkIsFav(data) async {
+    if (data['p_wishlist'].contains(currentUser!.uid))
+      isFav(true);
+    else
+      isFav(false);
+  }
 }

lib/services/firestore_service.dart

@@ -22,4 +22,12 @@ class FirestoreService {
   // delete cart document from databse
   static deleteCartDocument(docId) =>
       firestore.collection(cartCollection).doc(docId).delete();
+
+  // gett all chat messages
+  static getChatMessages(docId) => firestore
+      .collection(chatsCollection)
+      .doc(docId)
+      .collection(messagesCollection)
+      .orderBy('created_on', descending: false)
+      .snapshots();
 }