ViewManager: ask to create Shifts before creating Jobs

JobsHelper: check if there are no shifts

src/jobs/jobsmanager/model/jobshelper.cpp

@@ -293,6 +293,12 @@ bool JobsHelper::copyStops(sqlite3pp::database &db, db_id fromJobId, db_id toJob
     return true;
 }
 
+bool JobsHelper::checkShiftsExist(sqlite3pp::database &db)
+{
+    query q(db, "SELECT id FROM jobshifts LIMIT 1");
+    return q.step() == SQLITE_ROW;
+}
+
 JobStopDirectionHelper::JobStopDirectionHelper(sqlite3pp::database &db) :
     mDb(db),
     m_query(new sqlite3pp::query(mDb))

src/jobs/jobsmanager/model/jobshelper.h

@@ -18,6 +18,8 @@ public:
 
     static bool copyStops(sqlite3pp::database &db, db_id fromJobId, db_id toJobId,
                           int secsOffset, bool copyRsOps, bool reversePath);
+
+    static bool checkShiftsExist(sqlite3pp::database &db);
 };
 
 class JobStopDirectionHelper

src/viewmanager/viewmanager.cpp

@@ -27,6 +27,7 @@
 #include "sessionstartendrsviewer.h"
 
 #include <QMessageBox>
+#include "utils/owningqpointer.h"
 
 ViewManager::ViewManager(QObject *parent) :
     QObject(parent),
@@ -618,6 +619,22 @@ bool ViewManager::requestJobCreation()
 {
     /* Creates a new job and opens JobPathEditor */
 
+    if(!JobsHelper::checkShiftsExist(Session->m_Db))
+    {
+        //It's better to create Shifts before creating Jobs,
+        //remind the user on every new Job
+        int ret = QMessageBox::question(m_mainWidget, tr("Create Shift too?"),
+                                        tr("No Shift are present in this session.\n"
+                                           "Do you want to create some before creating Jobs?"),
+                                        QMessageBox::Yes | QMessageBox::No);
+        if(ret == QMessageBox::Yes)
+        {
+            //Create shift
+            showShiftManager();
+            return false;
+        }
+    }
+
     if(!jobEditor || !jobEditor->createNewJob())
         return false; //JobPathEditor is busy, abort