selected account: save and restore

This commit save user chosen account in NSUserDefaults and restore
it on launch. If account is not saved then try to find registered
RING account, if it is not available search for SIP account.

Change-Id: I15294e163b4a69247532bf46dd2c115a7c7c4add
Reviewed-by: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
diff --git a/src/AccountSelectionManager.mm b/src/AccountSelectionManager.mm
new file mode 100644
index 0000000..335db25
--- /dev/null
+++ b/src/AccountSelectionManager.mm
@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2015-2017 Savoir-faire Linux Inc.
+ *  Author: Kateryna Kostiuk <kateryna.kostiuk@savoirfairelinux.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
+ */
+
+// LRC
+#import <accountmodel.h>
+#import <account.h>
+#import <AvailableAccountModel.h>
+#import <QItemSelectionModel.h>
+
+#import "AccountSelectionManager.h"
+
+@implementation AccountSelectionManager
+
+NSString* const savedUserAccountKey = @"savedUserSelectedAccountKey";
+
+- (void) saveAccountWithIndex:(QModelIndex )index {
+    if(!index.isValid()) {
+        return;
+    }
+    QByteArray accountID = index.data(static_cast<int>(Account::Role::Id)).toByteArray();
+    if (accountID.isEmpty()) {
+        return;
+    }
+    NSString* accountToNSString = QString::QString(accountID).toNSString();
+    [[NSUserDefaults standardUserDefaults] setObject:accountToNSString forKey:savedUserAccountKey];
+}
+
+
+- (void) selectChosenAccount {
+    NSString* savedAccount = [[NSUserDefaults standardUserDefaults] stringForKey:savedUserAccountKey];
+    if(!savedAccount || savedAccount.length <= 0) {
+        return;
+    }
+    const char* secondName = [savedAccount UTF8String];
+    QByteArray assountToarray = QByteArray::QByteArray(secondName);
+    if (strlen(assountToarray) <= 0) {
+        return;
+    }
+    if (!(AccountModel::instance().getById(assountToarray))) {
+        return;
+    }
+    auto account = AccountModel::instance().getById(assountToarray);
+    QModelIndex savedIndex = QModelIndex::QModelIndex();
+    // first try to get saved account
+    savedIndex = AvailableAccountModel::instance().mapFromSource(account->index());
+    if (savedIndex.isValid()) {
+        AvailableAccountModel::instance().selectionModel()->setCurrentIndex(savedIndex, QItemSelectionModel::ClearAndSelect);
+        return;
+    }
+    // if account is not saved, try to select RING account
+    if (auto account = AvailableAccountModel::instance().currentDefaultAccount(URI::SchemeType::RING)) {
+        savedIndex = AvailableAccountModel::instance().mapFromSource(account->index());
+    }
+    if (savedIndex.isValid()) {
+        AvailableAccountModel::instance().selectionModel()->setCurrentIndex(savedIndex, QItemSelectionModel::ClearAndSelect);
+        return;
+    }
+    // if no RING account try to select SIP
+    if (auto account = AvailableAccountModel::instance().currentDefaultAccount(URI::SchemeType::SIP)) {
+        savedIndex = AvailableAccountModel::instance().mapFromSource(account->index());
+
+    }
+    if (savedIndex.isValid()) {
+        AvailableAccountModel::instance().selectionModel()->setCurrentIndex(savedIndex, QItemSelectionModel::ClearAndSelect);
+    }
+}
+
+@end