Add last updated label to grading (#62)

lib/generated/intl/messages_en.dart

@@ -122,6 +122,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "labelEvaluation" : MessageLookupByLibrary.simpleMessage("Evaluation"),
     "labelFirstName" : MessageLookupByLibrary.simpleMessage("First name"),
     "labelLastName" : MessageLookupByLibrary.simpleMessage("Last name"),
+    "labelLastUpdated" : MessageLookupByLibrary.simpleMessage("Last updated"),
     "labelLink" : MessageLookupByLibrary.simpleMessage("Link"),
     "labelLocation" : MessageLookupByLibrary.simpleMessage("Location"),
     "labelName" : MessageLookupByLibrary.simpleMessage("Name"),

lib/generated/intl/messages_ro.dart

@@ -122,6 +122,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "labelEvaluation" : MessageLookupByLibrary.simpleMessage("Evaluare"),
     "labelFirstName" : MessageLookupByLibrary.simpleMessage("Prenume"),
     "labelLastName" : MessageLookupByLibrary.simpleMessage("Nume"),
+    "labelLastUpdated" : MessageLookupByLibrary.simpleMessage("Ultima modificare"),
     "labelLink" : MessageLookupByLibrary.simpleMessage("Link"),
     "labelLocation" : MessageLookupByLibrary.simpleMessage("Locație"),
     "labelName" : MessageLookupByLibrary.simpleMessage("Nume"),

lib/l10n/intl_en.arb

@@ -37,6 +37,7 @@
   "labelPrivacyPolicy": "Privacy Policy",
   "labelPersonalInformation": "Personal information",
   "labelPermissionsConsent": "consent for editing rights",
+  "labelLastUpdated": "Last updated",
 
   "sectionShortcuts": "Shortcuts",
   "sectionEvents": "Events",

lib/l10n/intl_ro.arb

@@ -37,6 +37,7 @@
   "labelPrivacyPolicy": "Privacy Policy",
   "labelPersonalInformation": "Informații personale",
   "labelPermissionsConsent": "consimțământul pentru drepturi de editare",
+  "labelLastUpdated": "Ultima modificare",
 
   "sectionShortcuts": "Scurtături",
   "sectionEvents": "Evenimente",

lib/pages/classes/model/class.dart

@@ -1,6 +1,7 @@
 import 'package:acs_upb_mobile/generated/l10n.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:meta/meta.dart';
+import 'package:time_machine/time_machine.dart';
 
 enum ShortcutType { main, classbook, resource, other }
 
@@ -38,10 +39,15 @@ class ClassHeader {
 }
 
 class Class {
-  Class({@required this.header, List<Shortcut> shortcuts, this.grading})
+  Class(
+      {@required this.header,
+      List<Shortcut> shortcuts,
+      this.grading,
+      this.gradingLastUpdated})
       : shortcuts = shortcuts ?? [];
 
   ClassHeader header;
   final List<Shortcut> shortcuts;
   final Map<String, double> grading;
+  final LocalDateTime gradingLastUpdated;
 }

lib/pages/classes/service/class_provider.dart

@@ -5,6 +5,7 @@ import 'package:acs_upb_mobile/pages/filter/model/filter.dart';
 import 'package:acs_upb_mobile/widgets/toast.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:flutter/material.dart';
+import 'package:time_machine/time_machine.dart';
 
 extension UserExtension on User {
   bool get canEditClassInfo => permissionLevel >= 3;
@@ -52,6 +53,13 @@ extension ClassHeaderExtension on ClassHeader {
   }
 }
 
+extension TimestampExtension on Timestamp {
+  LocalDateTime toLocalDateTime() => LocalDateTime.dateTime(toDate())
+      .inZoneStrictly(DateTimeZone.utc)
+      .withZone(DateTimeZone.local)
+      .localDateTime;
+}
+
 extension ClassExtension on Class {
   static Class fromSnap({ClassHeader header, DocumentSnapshot snap}) {
     if (snap.data == null) {
@@ -75,10 +83,15 @@ extension ClassExtension on Class {
           (String name, dynamic value) => MapEntry(name, value.toDouble())));
     }
 
+    final gradingLastUpdated = snap.data['gradingLastUpdated'] == null
+        ? null
+        : (snap.data['gradingLastUpdated'] as Timestamp).toLocalDateTime();
+
     return Class(
       header: header,
       shortcuts: shortcuts,
       grading: grading,
+      gradingLastUpdated: gradingLastUpdated,
     );
   }
 }
@@ -259,13 +272,14 @@ class ClassProvider with ChangeNotifier {
     try {
       final DocumentReference doc = _db.collection('classes').document(classId);
       final DocumentSnapshot snap = await doc.get();
+      final Timestamp now = Timestamp.now();
 
       if (snap.data == null) {
         // Document does not exist
-        await doc.setData({'grading': grading});
+        await doc.setData({'grading': grading, 'gradingLastUpdated': now});
       } else {
         // Document exists
-        await doc.updateData({'grading': grading});
+        await doc.updateData({'grading': grading, 'gradingLastUpdated': now});
       }
 
       notifyListeners();

lib/pages/classes/view/class_view.dart

@@ -68,6 +68,7 @@ class _ClassViewState extends State<ClassView> {
                         const SizedBox(height: 8),
                         GradingChart(
                           grading: classInfo.grading,
+                          lastUpdated: classInfo.gradingLastUpdated,
                           onSave: (grading) => classProvider.setGrading(
                               classId: widget.classHeader.id, grading: grading),
                         ),

lib/pages/classes/view/grading_view.dart

@@ -8,15 +8,21 @@ import 'package:flutter/material.dart';
 import 'package:pie_chart/pie_chart.dart';
 import 'package:provider/provider.dart';
 import 'package:quiver/iterables.dart';
+import 'package:time_machine/time_machine.dart';
 
 class GradingChart extends StatefulWidget {
   const GradingChart(
-      {Key key, this.grading, this.withHeader = true, this.onSave})
+      {Key key,
+      this.grading,
+      this.withHeader = true,
+      this.onSave,
+      this.lastUpdated})
       : super(key: key);
 
   final Map<String, double> grading;
   final bool withHeader;
   final void Function(Map<String, double>) onSave;
+  final LocalDateTime lastUpdated;
 
   @override
   _GradingChartState createState() => _GradingChartState();
@@ -40,9 +46,19 @@ class _GradingChartState extends State<GradingChart> {
               Row(
                 mainAxisAlignment: MainAxisAlignment.spaceBetween,
                 children: [
-                  Text(
-                    S.of(context).sectionGrading,
-                    style: Theme.of(context).textTheme.headline6,
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        S.of(context).sectionGrading,
+                        style: Theme.of(context).textTheme.headline6,
+                      ),
+                      if (widget.grading != null)
+                        Text(
+                          '${S.of(context).labelLastUpdated}: ${widget.lastUpdated?.toString('dd/MM/yyyy') ?? '?'}',
+                          textAlign: TextAlign.left,
+                        ),
+                    ],
                   ),
                   GestureDetector(
                     onTap: authProvider.currentUserFromCache.canEditClassInfo

pubspec.lock

@@ -846,7 +846,7 @@ packages:
     source: hosted
     version: "1.3.0"
   time_machine:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: time_machine
       url: "https://pub.dartlang.org"

pubspec.yaml

@@ -13,7 +13,7 @@ description: A mobile application for students at ACS UPB.
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 #
 # ACS UPB Mobile uses semantic versioning. You can read more in the CONTRIBUTING.md file.
-version: 0.10.1+1
+version: 0.10.2+1
 
 environment:
   sdk: ">=2.6.0 <3.0.0"
@@ -77,6 +77,9 @@ dependencies:
   # Timetable widget
   timetable: ^0.2.0
 
+  # DateTime utilities
+  time_machine:
+
   # Color picker widget
   flutter_colorpicker: ^0.3.4