Auth token is stored in settings and deleted if a request is not authorized (with automatic re-login). Failed request need to be resend.

network/apiroutes.h

@@ -7,6 +7,8 @@
 
 static const QString apiPrefix = "/api/";
 
+static const QString ROUTE_LOG_IN = apiPrefix + "log_in";
+
 static const QString ROUTE_ITEMS = apiPrefix + "items";
 
 #endif  // APIROUTES_H

network/servercommunicator.cpp

@@ -6,6 +6,8 @@
 #include <QJsonObject>
 #include <QRestReply>
 
+#include "../formats/jsonparser.h"
+
 using namespace Qt::StringLiterals;
 
 ServerCommunicator::ServerCommunicator(QObject* parent)
@@ -46,7 +48,14 @@ void ServerCommunicator::setServerConfiguration(const QString url,
   m_password  = password;
   m_authToken = authToken;
 
-  if (!authToken.isEmpty()) {
+  if (authToken.isEmpty()) {
+    if (validLoginCredentials()) {
+      const QByteArray userCredentials =
+          JsonParser::userCredentialsToJsonDocument(m_email, m_password);
+      sendPostRequest(ROUTE_LOG_IN, userCredentials);
+    }
+  } else {
+    /// authToken not empty:
     m_serviceApi->setBearerToken(authToken.toLatin1());
   }
 }
@@ -62,6 +71,19 @@ void ServerCommunicator::deleteItem(const QString& id) {
   sendDeleteRequest(path);
 }
 
+bool ServerCommunicator::validLoginCredentials() {
+  if (url().isEmpty()) {
+    return false;
+  }
+  if (m_email.isEmpty()) {
+    return false;
+  }
+  if (m_password.isEmpty()) {
+    return false;
+  }
+  return true;
+}
+
 void ServerCommunicator::sendGetRequest(const QString& path) {
   // TODO check for valid path, instead of emptiness
   if (path.isEmpty()) {
@@ -83,7 +105,11 @@ void ServerCommunicator::sendGetRequest(const QString& path) {
       } else {
         int statusCode = reply.httpStatus();
         qWarning() << "Request not successful:" << statusCode;
-        onGetReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        if (statusCode == 401) {
+          notAuthorized(path);
+        } else {
+          onGetReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        }
       }
     }
   });
@@ -123,7 +149,11 @@ void ServerCommunicator::sendPostRequest(const QString& path, const QByteArray d
         int statusCode = reply.httpStatus();
         qWarning() << "Request not successful:" << statusCode;
         qInfo() << "Content:" << reply.readJson();
-        onPostReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        if (statusCode == 401) {
+          notAuthorized(path);
+        } else {
+          onPostReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        }
       }
     }
   });
@@ -132,6 +162,9 @@ void ServerCommunicator::sendPostRequest(const QString& path, const QByteArray d
 void ServerCommunicator::onPostReplySuccessful(const QString& path, const QJsonDocument doc) {
   if (path == ROUTE_ITEMS) {
     emit sendItemSuccessful(doc.toJson());
+  } else if (path == ROUTE_LOG_IN) {
+    qCritical() << "Login success:" << doc.toJson(QJsonDocument::Compact);
+    emit loginSuccessful(doc.toJson(QJsonDocument::Compact));
   } else {
     qWarning() << "Can't match request path:" << path;
   }
@@ -140,6 +173,9 @@ void ServerCommunicator::onPostReplySuccessful(const QString& path, const QJsonD
 void ServerCommunicator::onPostReplyFailure(const QString& path, const QString errorString) {
   if (path == ROUTE_ITEMS) {
     emit sendItemFailure(errorString);
+  } else if (path == ROUTE_LOG_IN) {
+    qCritical() << "Login failure:" << errorString;
+    emit loginFailure(errorString);
   } else {
     qWarning() << "Can't match request path:" << path;
   }
@@ -160,7 +196,11 @@ void ServerCommunicator::sendDeleteRequest(const QString& path) {
       } else {
         int statusCode = reply.httpStatus();
         qWarning() << "Request not successful:" << statusCode;
-        onDeleteReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        if (statusCode == 401) {
+          notAuthorized(path);
+        } else {
+          onDeleteReplyFailure(path, QString("HTTP status code: %1").arg(statusCode));
+        }
       }
     }
   });

network/servercommunicator.h

@@ -30,6 +30,11 @@ class ServerCommunicator : public QObject {
  signals:
   void urlChanged();
 
+  void loginSuccessful(const QByteArray responseData);
+  void loginFailure(const QString errorString);
+
+  void notAuthorized(const QString path);
+
   void itemsFetched(const QByteArray jsonDoc);
   void itemsFetchFailure(const QString errorString);
 
@@ -48,6 +53,8 @@ class ServerCommunicator : public QObject {
   QString m_password;
   QString m_authToken;
 
+  bool validLoginCredentials();
+
   void sendGetRequest(const QString& path);
   void onGetReplySuccessful(const QString& path, const QJsonDocument doc);
   void onGetReplyFailure(const QString& path, const QString errorString);