Start to build groups page

lib/ui/screens/group_access_denied_screen.dart

@@ -0,0 +1,106 @@
+import 'package:comunic/helpers/groups_helper.dart';
+import 'package:comunic/models/group.dart';
+import 'package:comunic/ui/widgets/group_icon_widget.dart';
+import 'package:comunic/ui/widgets/group_membership_widget.dart';
+import 'package:comunic/ui/widgets/safe_state.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Group access denied screen
+///
+/// @author Pierre Hubert
+
+class GroupAccessDeniedScreen extends StatefulWidget {
+  final int groupID;
+  final Function() onMembershipAcquired;
+
+  const GroupAccessDeniedScreen({
+    Key key,
+    @required this.groupID,
+    @required this.onMembershipAcquired,
+  })  : assert(groupID != null),
+        assert(onMembershipAcquired != null),
+        super(key: key);
+
+  @override
+  _GroupAccessDeniedScreenState createState() =>
+      _GroupAccessDeniedScreenState();
+}
+
+class _GroupAccessDeniedScreenState extends SafeState<GroupAccessDeniedScreen> {
+  Group _group;
+
+  bool error = false;
+
+  @override
+  void initState() {
+    _refresh();
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (error)
+      return buildErrorCard(tr("Could not get basic group information!"),
+          actions: [
+            MaterialButton(
+              child: Text(tr("Try again").toUpperCase()),
+              onPressed: () => this._refresh(),
+            )
+          ]);
+
+    if (_group == null) return buildCenteredProgressBar();
+
+    return Padding(
+      padding: const EdgeInsets.all(8.0),
+      child: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Spacer(
+              flex: 5,
+            ),
+            GroupIcon(group: _group),
+            Spacer(),
+            Text(
+              _group.displayName,
+              style: TextStyle(fontSize: 20),
+            ),
+            Spacer(),
+            Text(tr("A registration is required to access this group page.")),
+            Spacer(),
+            GroupMembershipWidget(
+              group: _group,
+              onUpdated: () => this._refresh(),
+              onError: () => this._refresh(),
+            ),
+            Spacer(
+              flex: 5,
+            )
+          ],
+        ),
+      ),
+    );
+  }
+
+  /// Get basic information about the groups
+  Future<void> _refresh() async {
+    try {
+      setState(() {
+        error = false;
+        _group = null;
+      });
+
+      // Get information about a single group
+      final group = await GroupsHelper().getSingle(widget.groupID, force: true);
+
+      if (group.getIsAtLeastMember) widget.onMembershipAcquired();
+
+      setState(() => _group = group);
+    } catch (e) {
+      print(e);
+      setState(() => error = true);
+    }
+  }
+}

lib/ui/screens/group_screen.dart

@@ -0,0 +1,80 @@
+import 'package:comunic/helpers/groups_helper.dart';
+import 'package:comunic/ui/screens/group_access_denied_screen.dart';
+import 'package:comunic/ui/widgets/safe_state.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Group screen
+///
+/// @author Pierre Hubert
+
+class GroupPageScreen extends StatefulWidget {
+  final int groupID;
+
+  const GroupPageScreen({Key key, @required this.groupID})
+      : assert(groupID != null),
+        super(key: key);
+
+  @override
+  _GroupPageScreenState createState() => _GroupPageScreenState();
+}
+
+class _GroupPageScreenState extends SafeState<GroupPageScreen> {
+  int get groupID => widget.groupID;
+
+  GetAdvancedInfoResult _getGroupResult;
+  var error = false;
+
+  @override
+  void initState() {
+    _refreshPage();
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (error)
+      return buildErrorCard(tr("Could not load information about the group!"),
+          actions: [
+            MaterialButton(
+              onPressed: () => _refreshPage(),
+              child: Text(tr("Try again").toUpperCase()),
+            )
+          ]);
+
+    // If we are still loading the page
+    if (_getGroupResult == null) return buildCenteredProgressBar();
+
+    // Check if access to the group was denied
+    if (_getGroupResult.status == GetAdvancedInfoStatus.ACCESS_DENIED)
+      return GroupAccessDeniedScreen(
+        groupID: groupID,
+        onMembershipAcquired: () => _refreshPage(),
+      );
+
+    // Create another screen for the group page
+  }
+
+  /// Refresh the page
+  Future<void> _refreshPage() async {
+    try {
+      setState(() {
+        error = false;
+        _getGroupResult = null;
+      });
+
+      // Get information about the group
+      final result = await GroupsHelper().getAdvancedInfo(groupID);
+
+      setState(() {
+        _getGroupResult = result;
+      });
+    } catch (e) {
+      print(e);
+      setState(() {
+        error = true;
+      });
+    }
+  }
+}

lib/ui/screens/groups_list_screen.dart

@@ -1,6 +1,7 @@
 import 'package:comunic/helpers/groups_helper.dart';
 import 'package:comunic/lists/groups_list.dart';
 import 'package:comunic/models/group.dart';
+import 'package:comunic/ui/routes/home_route.dart';
 import 'package:comunic/ui/widgets/group_icon_widget.dart';
 import 'package:comunic/ui/widgets/group_membership_widget.dart';
 import 'package:comunic/ui/widgets/safe_state.dart';
@@ -40,7 +41,7 @@ class _GroupsListScreenState extends SafeState<GroupsListScreen> {
           hide: !_error,
           actions: [
             MaterialButton(
-              child: Text(tr("Try again".toUpperCase())),
+              child: Text(tr("Try again").toUpperCase()),
               onPressed: () => _refreshList(),
             ),
           ],
@@ -66,6 +67,7 @@ class _GroupsListScreenState extends SafeState<GroupsListScreen> {
                             trailing: IconButton(
                                 icon: Icon(Icons.delete),
                                 onPressed: () => _deleteGroup(g)),
+                            onTap: () => HomeRoute.of(context).openGroup(g.id),
                           ))
                       .toList(),
                 ),