Decode ERA SSB v1 date/time fields

src/lib/era/ssbv1ticket.cpp

@@ -44,6 +44,25 @@ bool SSBv1Ticket::maybeSSB(const QByteArray& data)
     return (data.at(0) >> 4) == SSB_VERSION;
 }
 
+QDate SSBv1Ticket::firstDayOfValidity(const QDate &contextDate) const
+{
+    if (!isValid() || firstDayOfValidityDay() == 0 || firstDayOfValidityDay() > 366) {
+        return {};
+    }
+    QDate d(contextDate.year(), 1, 1);
+    return d.addDays(firstDayOfValidityDay() - 1);
+}
+
+QDateTime SSBv1Ticket::departureTime(const QDate &contextDate) const
+{
+    if (!isValid() || departureTimeSlot() == 0 || departureTimeSlot() > 48) {
+        return {};
+    }
+
+    QDateTime dt(firstDayOfValidity(contextDate), {0, 0});
+    return dt.addSecs(60 * 30 * (departureTimeSlot() - 1));
+}
+
 QByteArray SSBv1Ticket::rawData() const
 {
     return m_data;

src/lib/era/ssbv1ticket.h

@@ -10,6 +10,7 @@
 #include "kitinerary_export.h"
 #include "ssbticketbase.h"
 
+#include <QDate>
 #include <QMetaType>
 
 namespace KItinerary {
@@ -26,8 +27,9 @@ class KITINERARY_EXPORT SSBv1Ticket : protected SSBTicketBase
     SSB_NUM_PROPERTY(numberOfTickets, 19, 6)
     SSB_NUM_PROPERTY(numberOfAdultPassengers, 25, 7)
     SSB_NUM_PROPERTY(numberOfChildPassengers, 32, 7)
-    SSB_NUM_PROPERTY(firstDayOfValidity, 39, 9)
-    SSB_NUM_PROPERTY(lastDayOfValidity, 48, 9)
+    /** Days since Jan 01. */
+    SSB_NUM_PROPERTY(firstDayOfValidityDay, 39, 9)
+    SSB_NUM_PROPERTY(lastDayOfValidityDay, 48, 9)
     SSB_NUM_PROPERTY(customerNumberType, 57, 1)
     SSB_LONG_PROPERTY(customerNumber, 58, 47)
     SSB_NUM_PROPERTY(departureStationType, 105, 1)
@@ -36,9 +38,13 @@ class KITINERARY_EXPORT SSBv1Ticket : protected SSBTicketBase
     SSB_NUM_PROPERTY(arrivalStationType, 136, 1)
     SSB_NUM_PROPERTY(arrivalStationNum, 137, 30)
     SSB_STR_PROPERTY(arrivalStationAlpha, 137, 5)
-    SSB_NUM_PROPERTY(departureTime, 167, 6)
+    /** departure time encoded as 48 30min time slots */
+    SSB_NUM_PROPERTY(departureTimeSlot, 167, 6)
     SSB_NUM_PROPERTY(trainNumber, 173, 17)
     SSB_LONG_PROPERTY(reservationReference, 190, 40)
+    /** ERA/TD/2009-14/INT: PASSENGER CODE LIST TO TAP TSI - §B.5.24 - Class
+     *  Possible values are: 1 (1st), 2 (2nd), C (Club), P (Superior), T (Tourist)
+     */
     SSB_NUM_PROPERTY(classOfTransport, 230, 6)
     SSB_NUM_PROPERTY(coachNumber, 236, 10)
     SSB_NUM_PROPERTY(seatNumber, 246, 7)
@@ -59,6 +65,11 @@ public:
     /** Returns @c true if this is a valid SSB ticket. */
     bool isValid() const;
 
+    /** First day of validity. */
+    Q_INVOKABLE QDate firstDayOfValidity(const QDate &contextDate = QDate::currentDate()) const;
+    /** Decoded departure time slot. */
+    Q_INVOKABLE QDateTime departureTime(const QDate &contextDate = QDate::currentDate()) const;
+
     /** Raw barcode data. */
     QByteArray rawData() const;
 

src/tools/ticket-barcode-dump.cpp

@@ -113,6 +113,10 @@ static void dumpSsbv1Ticket(const QByteArray &data)
                 break;
         }
     }
+
+    std::cout << std::endl;
+    std::cout << "First day of validitiy: " << qPrintable(ticket.firstDayOfValidity().toString(Qt::ISODate)) << std::endl;
+    std::cout << "Departure time: " << qPrintable(ticket.departureTime().toString(Qt::ISODate)) << std::endl;
 }
 
 static void dumpRawData(const char *data, std::size_t size)