add messaging

lib/fcs/common/domain/constants.dart

@@ -5,6 +5,7 @@ const setting_doc_id = "setting";
 const privilege_collection = "privileges";
 const markets_collection = "markets";
 const packages_collection = "packages";
+const messages_collection = "messages";
 
 const user_requested_status = "requested";
 const user_invited_status = "invited";
@@ -14,6 +15,10 @@ const pkg_files_path = "/packages";
 // Link page
 const page_payment_methods = "payment_methods";
 const page_buying_instructions = "buying_instructions";
+
+// Message type
+const message_type_package = "t_p";
+
 //////////////////////////////
 
 const ok_doc_id = "ok";

lib/fcs/common/domain/entities/user.dart

@@ -1,4 +1,10 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:fcs/fcs/common/helpers/const.dart';
+import 'package:fcs/fcs/common/pages/package/package_info.dart';
+import 'package:intl/intl.dart';
+
+DateFormat dayFormat = DateFormat("MMM dd yyyy");
+DateFormat timeFormat = DateFormat("HH:mm");
 
 class User {
   String id;
@@ -6,6 +12,37 @@ class User {
   String phoneNumber;
   String status;
   String fcsID;
+  DateTime lastMessageTime;
+  String lastMessage;
+  int userUnseenCount;
+  int fcsUnseenCount;
+
+  String get initial => name != null && name != "" ? name.substring(0, 1) : "?";
+
+  String get getLastMessage {
+    var msg = lastMessage ?? "Say hi to $name";
+    if (msg.length > 30) return msg.substring(0, 30) + " ... ";
+    return msg;
+  }
+
+  String get getLastMessageTime {
+    if (lastMessageTime == null) return "";
+    DateTime today = DateTime.now();
+    if (lastMessageTime.year == today.year &&
+        lastMessageTime.month == today.month &&
+        lastMessageTime.day == today.day) {
+      return timeFormat.format(lastMessageTime);
+    } else {
+      return dateFormat.format(lastMessageTime);
+    }
+  }
+
+  String get getUserUnseenCount => userUnseenCount != null
+      ? userUnseenCount > 100 ? "99+" : userUnseenCount.toString()
+      : "0";
+  String get getFcsUnseenCount => fcsUnseenCount != null
+      ? fcsUnseenCount > 100 ? "99+" : fcsUnseenCount.toString()
+      : "0";
 
   List<String> privileges = [];
 
@@ -16,14 +53,17 @@ class User {
   bool get invited => status != null && status == userStatusInvited;
   bool get requested => status != null && status == userStatusRequested;
   String get share => "Your phone number:$phoneNumber";
-  User({
-    this.id,
-    this.name,
-    this.phoneNumber,
-    this.fcsID,
-    this.status,
-    this.privileges,
-  });
+  User(
+      {this.id,
+      this.name,
+      this.phoneNumber,
+      this.fcsID,
+      this.status,
+      this.privileges,
+      this.lastMessage,
+      this.lastMessageTime,
+      this.userUnseenCount,
+      this.fcsUnseenCount});
 
   factory User.fromJson(Map<String, dynamic> json) {
     return User(
@@ -32,6 +72,7 @@ class User {
       fcsID: json['fcs_id'],
       phoneNumber: json['phone_number'],
       status: json['status'],
+      lastMessage: json['last_message'],
     );
   }
 
@@ -49,6 +90,8 @@ class User {
   }
 
   factory User.fromMap(Map<String, dynamic> map, String docID) {
+    var _date = (map['message_time'] as Timestamp);
+
     List<String> _privileges =
         map['privileges'] == null ? [] : map['privileges'].cast<String>();
 
@@ -58,7 +101,11 @@ class User {
         phoneNumber: map['phone_number'],
         status: map['status'],
         fcsID: map['fcs_id'],
-        privileges: _privileges);
+        privileges: _privileges,
+        lastMessage: map['last_message'],
+        userUnseenCount: map['user_unseen_count'],
+        fcsUnseenCount: map['fcs_unseen_count'],
+        lastMessageTime: _date == null ? null : _date.toDate());
   }
 
   bool isCustomer() {

lib/fcs/common/domain/vo/message.dart

@@ -0,0 +1,58 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+
+class Message {
+  String id;
+  String message;
+  DateTime date;
+  String receiverID;
+  String receiverName;
+  String senderID;
+  String senderName;
+  String messageType;
+  String messageID;
+
+  Message(
+      {this.id,
+      this.message,
+      this.date,
+      this.receiverID,
+      this.receiverName,
+      this.senderID,
+      this.senderName,
+      this.messageType,
+      this.messageID});
+  bool fromToday() {
+    var now = DateTime.now();
+    return date.day == now.day &&
+        date.month == now.month &&
+        date.year == now.year;
+  }
+
+  Map<String, dynamic> toMap() {
+    return {
+      'message': message,
+      "receiver_id": receiverID,
+    };
+  }
+
+  bool sameDay(Message another) {
+    return date.year == another.date.year &&
+        date.month == another.date.month &&
+        date.day == another.date.day;
+  }
+
+  factory Message.fromMap(Map<String, dynamic> map, String id) {
+    var date = (map['date'] as Timestamp);
+    return Message(
+      id: id,
+      message: map['message'],
+      senderID: map['sender_id'],
+      senderName: map['sender_name'],
+      receiverID: map['receiver_id'],
+      receiverName: map['receiver_name'],
+      messageType: map['msg_type'],
+      messageID: map['msg_id'],
+      date: date != null ? date.toDate() : null,
+    );
+  }
+}