Add compute_next_timestep()

but the multimap YearPeriod, which must be empty.

library/include/mobilisis/calculate_price.h

@@ -109,6 +109,8 @@ CalcState CALCULATE_LIBRARY_API init_tariff(parking_tariff_t **tariff,
 void CALCULATE_LIBRARY_API free_tariff(parking_tariff_t *tariff);
 int CALCULATE_LIBRARY_API get_zone_nr(int zone = -1);
 
+int CALCULATE_LIBRARY_API compute_next_timestep(parking_tariff_t *tariff, int currentTimeMinutes, int UpDown);
+
 CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(       // deprecated
                                             parking_tariff_t *tariff,
                                             time_t start_parking_time,

library/include/mobilisis/calculator_functions.h

@@ -32,18 +32,17 @@ public:
     // Daily ticket
     QDateTime GetDailyTicketDuration(Configuration* cfg, const QDateTime start_datetime, uint8_t payment_option, bool carry_over);
 
+    //
+    // helper function to find time steps for a tariff with PaymentMethod::Steps
+    // (e.g. Schoenau/Koenigsee)
+    //
+    QList<int> GetTimeSteps(Configuration *cfg) const;
 
 private:
     // Introduced for PaymentMethod::Steps (e.g. Schoenau)
     // For tariff of following structure: only steps, no special days, nonstop.
-    uint32_t GetCostFromDuration(Configuration const* cfg, QDateTime const &start, quint64 durationMinutes, uint8_t paymentMethod = PaymentMethod::Steps);
-    uint32_t GetCostFromDuration(Configuration const* cfg, QDateTime const &start, QDateTime const &end, uint8_t paymentMethod = PaymentMethod::Steps);
-
-
-    //
-    // helper functions for PaymentMethod::Steps
-    //
-    QList<int> GetTimeSteps(Configuration const *cfg, int paymentMethod);
-    //
-    uint32_t GetPriceForTimeStep(Configuration const *cfg, uint8_t paymentMethod, int timeStep);
+    uint32_t GetCostFromDuration(Configuration *cfg, QDateTime const &start, quint64 durationMinutes) const;
+    uint32_t GetCostFromDuration(Configuration *cfg, QDateTime const &start, QDateTime const &end) const;
+    uint32_t GetPriceForTimeStep(Configuration *cfg, int timeStep) const;
+    uint32_t GetDurationForPrice(Configuration *cfg, int price) const;
 };

library/src/calculate_price.cpp

@@ -93,6 +93,44 @@ void CALCULATE_LIBRARY_API free_tariff(parking_tariff_t *tariff) {
 }
 
 
+//
+// UpDown 1 -> up; 0 -> down
+int CALCULATE_LIBRARY_API compute_next_timestep(parking_tariff_t *tariff, int currentTimeMinutes, int UpDown)
+{
+    static const QList<int> stepList = calculator.GetTimeSteps(tariff);
+
+    int currentStepIndex = stepList.indexOf(currentTimeMinutes);
+
+    if (currentStepIndex == -1) {
+        qCritical() << "compute_next_timestep() *NO STEP* for currentTimeMinutes (" << currentTimeMinutes << ")";
+        return  currentTimeMinutes;
+    }
+
+    if (UpDown == 1) { // UP
+        if (stepList[currentStepIndex] == stepList.last()) {
+            qCritical() << "compute_next_timestep() *NO NEXT STEP* for currentTimeMinutes (" << currentTimeMinutes << ")";
+            return  currentTimeMinutes;
+        }
+        else {
+            return stepList[currentStepIndex + 1];
+        }
+    }
+    if (UpDown == 0) { // DOWN
+        if (stepList[currentStepIndex] == stepList.first()) {
+            qCritical() << "compute_next_timestep() *NO PREVIOUS STEP* for currentTimeMinutes (" << currentTimeMinutes << ")";
+            return  currentTimeMinutes;
+        }
+        else {
+            return stepList[currentStepIndex - 1];
+        }
+    }
+
+    qCritical() << "compute_next_timestep() *CAN NOT COMPUTE* for currentTimeMinutes (" << currentTimeMinutes << ")";
+    return  currentTimeMinutes;
+}
+
+
+
 // this is currently not used
 CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
         parking_tariff_t *tariff,

library/src/calculator_functions.cpp

@@ -118,22 +118,35 @@ std::string Calculator::GetDurationFromCost(Configuration* cfg,
                                             bool nextDay,
                                             bool prepaid)
 {
+
     // Get input date
     QDateTime inputDate = QDateTime::fromString(start_datetime,Qt::ISODate);
 
+    // use tariff with structure as for instance Schnau, Koenigsee:
+    // without given YearPeriod, SpecialDays and SpecialDaysWorktime
+    if (cfg->YearPeriod.size() == 0
+        && cfg->SpecialDays.size() == 0
+        && cfg->SpecialDaysWorktime.size() == 0)
+    {
+        inputDate = inputDate.addSecs(GetDurationForPrice(cfg, price) * 60);
+
+        return inputDate.toString(Qt::ISODate).toStdString();
+    }
+
+
     // Get day of week
     int weekdayId = 0;
     weekdayId = Utilities::ZellersAlgorithm(inputDate.date().day(),inputDate.date().month(),inputDate.date().year());
 
     //Get min and max time defined in JSON
     double minMin = 0;
-    minMin = cfg->PaymentOption.find(payment_option)->second.pop_min_time;
+    minMin = cfg->getPaymentOptions().pop_min_time;
 
     double maxMin = 0;
-    maxMin = cfg->PaymentOption.find(payment_option)->second.pop_max_time;
+    maxMin = cfg->getPaymentOptions().pop_max_time;
 
     double min_price = 0;
-    min_price = cfg->PaymentOption.find(payment_option)->second.pop_min_price;
+    min_price = cfg->getPaymentOptions().pop_min_price;
 
     if(price < min_price)
     {
@@ -341,30 +354,28 @@ std::string Calculator::GetDurationFromCost(Configuration* cfg,
 /// <inheritdoc/>
 ///
 
-uint32_t Calculator::GetCostFromDuration(Configuration const* cfg,
+uint32_t Calculator::GetCostFromDuration(Configuration *cfg,
                                          QDateTime const &start,
-                                         quint64 timeStepInMinutes,
-                                         uint8_t paymentMethod) {
+                                         quint64 timeStepInMinutes) const {
     // for instance, a tariff as used in Schoenau, Koenigssee: only steps, no
     // special days, nonstop.
-    if (paymentMethod == PaymentMethod::Steps
+    if (cfg->YearPeriod.size() == 0
      && cfg->SpecialDays.size() == 0
      && cfg->SpecialDaysWorktime.size() == 0) {
         QDateTime const end = start.addSecs(timeStepInMinutes*60);
-        return GetCostFromDuration(cfg, start, end, paymentMethod);
+        return GetCostFromDuration(cfg, start, end);
     }
     return 0;
 }
 
-uint32_t Calculator::GetCostFromDuration(Configuration const* cfg,
+uint32_t Calculator::GetCostFromDuration(Configuration * cfg,
                                          QDateTime const &start,
-                                         QDateTime const &end,
-                                         uint8_t paymentMethod) {
-    if (paymentMethod == PaymentMethod::Steps
+                                         QDateTime const &end) const {
+    if (cfg->YearPeriod.size() == 0
      && cfg->SpecialDays.size() == 0
      && cfg->SpecialDaysWorktime.size() == 0) {
         int const timeStepInMinutes = start.secsTo(end) / 60;
-        return GetPriceForTimeStep(cfg, paymentMethod, timeStepInMinutes);
+        return GetPriceForTimeStep(cfg, timeStepInMinutes);
     }
     return 0;
 }
@@ -377,12 +388,12 @@ uint32_t Calculator::GetCostFromDuration(Configuration const* cfg,
 /// <inheritdoc/>
 double Calculator::GetCostFromDuration(Configuration* cfg, uint8_t payment_option, const QDateTime start_datetime, QDateTime & end_datetime,  double durationMin, bool nextDay, bool prepaid)
 {
-    // condition for 'PaymentMethod::Steps' (e.g. 332/Schoenau):
-    if (cfg->SpecialDays.size() == 0
+    if (cfg->YearPeriod.size() == 0
+        && cfg->SpecialDays.size() == 0
         && cfg->SpecialDaysWorktime.size() == 0)
     {
         end_datetime = start_datetime.addSecs(durationMin*60);
-        return GetCostFromDuration(cfg, start_datetime, end_datetime, PaymentMethod::Steps);
+        return GetCostFromDuration(cfg, start_datetime, end_datetime);
     }
 
     // Get input date
@@ -588,10 +599,10 @@ double Calculator::GetCostFromDuration(Configuration* cfg, uint8_t payment_optio
 
 
 
-QList<int> Calculator::GetTimeSteps(Configuration const *cfg, int paymentOption) {
+QList<int> Calculator::GetTimeSteps(Configuration *cfg) const {
     QList<int> timeSteps;
 
-    int const pop_id = cfg->PaymentOption.find(paymentOption)->second.pop_id;
+    int const pop_id = cfg->getPaymentOptions().pop_id;
 
     for (auto[itr, rangeEnd] = cfg->PaymentRate.equal_range(pop_id); itr != rangeEnd; ++itr)
     {
@@ -603,9 +614,9 @@ QList<int> Calculator::GetTimeSteps(Configuration const *cfg, int paymentOption)
     return timeSteps;
 }
 
-uint32_t Calculator::GetPriceForTimeStep(Configuration const *cfg, uint8_t paymentOption, int timeStep) {
+uint32_t Calculator::GetPriceForTimeStep(Configuration *cfg, int timeStep) const {
 
-    int const pop_id = cfg->PaymentOption.find(paymentOption)->second.pop_id;
+    int const pop_id = cfg->getPaymentOptions().pop_id;
 
     for (auto[itr, rangeEnd] = cfg->PaymentRate.equal_range(pop_id); itr != rangeEnd; ++itr)
     {
@@ -616,9 +627,36 @@ uint32_t Calculator::GetPriceForTimeStep(Configuration const *cfg, uint8_t payme
 
         int const pun_duration = cfg->Duration.find(payment_unit_id)->second.pun_duration;
         if (timeStep == pun_duration) {
-                return (uint32_t)(itr->second.pra_price);
+            return (uint32_t)(itr->second.pra_price);
         }
     }
 
     return 0;
 }
+
+/**
+ * private: read price directly from config file (used with PaymentMethod::Steps)
+ *
+ * return duration in minutes for greatest pra_price < price
+ */
+
+uint32_t Calculator::GetDurationForPrice(Configuration *cfg, int price) const {
+    int const pop_id = cfg->getPaymentOptions().pop_id; 
+    uint32_t duration = 0;
+
+    for (auto[itr, rangeEnd] = cfg->PaymentRate.equal_range(pop_id); itr != rangeEnd; ++itr)
+    {
+        int const durationId = itr->second.pra_payment_unit_id;
+        int const pra_price = itr->second.pra_price;
+        uint32_t const durationUnit = cfg->Duration.find(durationId)->second.pun_duration;
+
+        if (price == pra_price) {
+            return durationUnit;
+        }
+        if (pra_price < price) {
+            duration = durationUnit;
+        }
+    }
+
+    return duration;
+}