lrc wrapper: return invalid structure when no account is available

NewAccountModel::getAccountInfo throws when it can't find an index
which is the case when the account list size is zero. So instead of
propogating exceptions to all the client api calls, just the
wrapper will catch and forward a reference to an invalid account
info struct.

Change-Id: Ief7f582178f48de059e2858dd21f409846abd210

lrcinstance.h

 /**************************************************************************
-| Copyright (C) 2015-2019 by Savoir-faire Linux                           |
+| Copyright (C) 2019 by Savoir-faire Linux                                |
 | Author: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>          |
 | Author: Isa Nanic <isa.nanic@savoirfairelinux.com>                      |
 |                                                                         |
@@ -28,10 +28,14 @@
 #include <QPixmap>
 #include <QBuffer>
 
+#include "settingskey.h"
+
 #include "api/lrc.h"
 #include "api/account.h"
 #include "api/newaccountmodel.h"
 #include "api/newcallmodel.h"
+#include "api/newdevicemodel.h"
+#include "api/newcodecmodel.h"
 #include "api/behaviorcontroller.h"
 #include "api/conversation.h"
 #include "api/contactmodel.h"
@@ -41,9 +45,8 @@
 #include "accountlistmodel.h"
 
 #include "account.h"
-//#include "instancemanager.cpp"
 
-#include <settingskey.h>
+using namespace lrc::api;
 
 class LRCInstance : public QObject
 {
@@ -57,42 +60,48 @@ public:
     static void init() {
         instance();
     };
-    static lrc::api::Lrc& getAPI() {
+    static Lrc& getAPI() {
         return *(instance().lrc_);
     };
     static void connectivityChanged() {
         instance().lrc_->connectivityChanged();
     };
-    static const lrc::api::NewAccountModel& accountModel() {
+    static const NewAccountModel& accountModel() {
         return instance().lrc_->getAccountModel();
     };
-    static lrc::api::NewAccountModel* editableAccountModel() {
-        return const_cast<lrc::api::NewAccountModel*>(&instance().lrc_->getAccountModel());
+    static NewAccountModel* editableAccountModel() {
+        return const_cast<NewAccountModel*>(&instance().lrc_->getAccountModel());
     };
-    static const lrc::api::BehaviorController& behaviorController() {
+    static const BehaviorController& behaviorController() {
         return instance().lrc_->getBehaviorController();
     };
-    static const lrc::api::DataTransferModel& dataTransferModel() {
+    static const DataTransferModel& dataTransferModel() {
         return instance().lrc_->getDataTransferModel();
     };
-    static lrc::api::DataTransferModel* editableDataTransferModel() {
-        return const_cast<lrc::api::DataTransferModel*>(&instance().lrc_->getDataTransferModel());
+    static DataTransferModel* editableDataTransferModel() {
+        return const_cast<DataTransferModel*>(&instance().lrc_->getDataTransferModel());
     };
     static bool isConnected() {
         return instance().lrc_->isConnected();
     };
 
-    static const lrc::api::account::Info&
+    static const account::Info&
     getCurrentAccountInfo() {
-        return accountModel().getAccountInfo(getCurrAccId());
+        try {
+            return accountModel().getAccountInfo(getCurrAccId());
+        } catch (...) {
+            static account::Info invalid = {};
+            qWarning() << "getAccountInfo exception";
+            return std::reference_wrapper<account::Info>{invalid};
+        }
     };
 
-    static lrc::api::ConversationModel*
+    static ConversationModel*
     getCurrentConversationModel() {
         return getCurrentAccountInfo().conversationModel.get();
     };
 
-    static lrc::api::NewCallModel*
+    static NewCallModel*
     getCurrentCallModel() {
         return getCurrentAccountInfo().callModel.get();
     };
@@ -102,29 +111,29 @@ public:
     };
 
     static const std::string& getCurrAccId() {
-        if (instance().selectedAccountId.empty()) {
-            instance().selectedAccountId = accountModel().getAccountList().at(0);
+        if (instance().selectedAccountId_.empty()) {
+            instance().selectedAccountId_ = accountModel().getAccountList().at(0);
         }
-        return instance().selectedAccountId;
+        return instance().selectedAccountId_;
     };
 
     static void setSelectedAccountId(const std::string& accountId) {
-        instance().selectedAccountId = accountId;
+        instance().selectedAccountId_ = accountId;
         QSettings settings;
         settings.setValue(SettingsKey::selectedAccount, QString::fromStdString(accountId));
     };
 
     static const std::string& getSelectedConvUid() {
-        return instance().selectedConvUid;
+        return instance().selectedConvUid_;
     };
 
     static void setSelectedConvId(const std::string& convUid) {
-        instance().selectedConvUid = convUid;
+        instance().selectedConvUid_ = convUid;
     };
 
     static void reset(bool newInstance = false) {
         if (newInstance) {
-            instance().lrc_.reset(new lrc::api::Lrc());
+            instance().lrc_.reset(new Lrc());
         } else {
             instance().lrc_.reset();
         }
@@ -160,7 +169,7 @@ public:
         instance().editableAccountModel()->setAlias(getCurrAccId(), alias);
     };
 
-    static const lrc::api::account::ConfProperties_t& getCurrAccConfig() {
+    static const account::ConfProperties_t& getCurrAccConfig() {
         return instance().getCurrentAccountInfo().confProperties;
     }
 
@@ -169,13 +178,13 @@ signals:
     void accountOnBoarded();
 
 private:
-    std::unique_ptr<lrc::api::Lrc> lrc_;
+    std::unique_ptr<Lrc> lrc_;
     AccountListModel accountListModel_;
 
     LRCInstance() {
-        lrc_ = std::make_unique<lrc::api::Lrc>();
+        lrc_ = std::make_unique<Lrc>();
     };
 
-    std::string selectedAccountId;
-    std::string selectedConvUid;
+    std::string selectedAccountId_;
+    std::string selectedConvUid_;
 };

settingswidget.cpp

@@ -34,6 +34,7 @@
 #include <QSettings>
 #include <QScrollBar>
 
+#include "settingskey.h"
 #include "utils.h"
 #include "settingsitemwidget.h"
 #include "passworddialog.h"