MOBILISIS-Calculator/library/src/calculate_price.cpp

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#include "calculate_price.h"
#include "configuration.h"
#include "calculator_functions.h"
#include "payment_option.h"
#include <QFile>
#include <QFileInfo>
#include <QDateTime>
#include <QDebug>
static Calculator calculator;
int CALCULATE_LIBRARY_API get_zone_nr() {
QFile zone("/etc/zone_nr");
if (zone.exists()) {
QFileInfo finfo(zone);
if (finfo.size() <= 4) { // decimal 000\n
if (zone.open(QIODevice::ReadOnly | QIODevice::Text)) {
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QTextStream in(&zone);
return in.readLine(100).toInt();
}
}
}
return -1;
}
CalcState CALCULATE_LIBRARY_API init_tariff(parking_tariff_t **tariff, char const *config_file) {
*tariff = new Configuration();
CalcState calcState;
int const zone = get_zone_nr();
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// DEBUG
qCritical() << "init_tariff:";
qCritical() << " ... zone = " << zone;
if (zone <= 0) {
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delete *tariff;
*tariff = nullptr;
return calcState.set(CalcState::State::ERROR_PARSING_ZONE_NR);
}
QString confFile(config_file);
if (!confFile.endsWith(QChar('/'))) {
confFile += "/";
}
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char buffer[32];
memset(buffer, 0x00, sizeof(buffer));
snprintf(buffer, sizeof(buffer)-1, "tariff%02d.json", zone);
confFile += buffer;
// DEBUG
qCritical() << " ... confFile = " << confFile;
QFile fname(confFile);
if (fname.exists() &&
fname.open(QIODevice::ReadOnly | QIODevice::Text)) {
// DEBUG
qCritical() << " ... confFile is open";
QString json = fname.readAll();
if (! (*tariff)->ParseJson(*tariff, json.toStdString().c_str())) {
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delete *tariff;
*tariff = nullptr;
return calcState.set(CalcState::State::ERROR_PARSING_TARIFF);
}
} else {
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delete *tariff;
*tariff = nullptr;
return calcState.set(CalcState::State::ERROR_LOADING_TARIFF);
}
qCritical() << "init_tariff: Parsing tariff config (" << confFile << ")";
return calcState;
}
void CALCULATE_LIBRARY_API free_tariff(parking_tariff_t *tariff) {
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if (tariff != nullptr) {
delete tariff;
}
}
CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
parking_tariff_t *tariff,
time_t start_parking_time, // in minutes
time_t end_parking_time, // in minutes
struct price_t *price) {
CalcState calcState;
double minMin = tariff->PaymentOption.find(PaymentOption::Option1)->second.pop_min_time;
double maxMin = tariff->PaymentOption.find(PaymentOption::Option1)->second.pop_max_time;
if (minMin < 0 || maxMin < 0 || maxMin < minMin) {
calcState.setDesc(QString("minMin=%1, maxMin=%2").arg(minMin, maxMin));
return calcState.set(CalcState::State::WRONG_PARAM_VALUES);
}
int const duration = end_parking_time - start_parking_time;
if (duration < 0) {
calcState.setDesc(QString("end=%1, start=%2")
.arg(end_parking_time, start_parking_time));
return calcState.set(CalcState::State::NEGATIVE_PARING_TIME);
}
if (duration > maxMin) {
calcState.setDesc(QString("duration=%1, maxMin=%2").arg(duration, maxMin));
return calcState.set(CalcState::State::ABOVE_MAX_PARKING_TIME);
}
if (duration < minMin) {
calcState.setDesc(QString("duration=%1, minMin=%2").arg(duration, minMin));
return calcState.set(CalcState::State::BELOW_MIN_PARKING_TIME);
}
if (duration == 0) {
memset(price, 0x00, sizeof(*price));
return calcState.set(CalcState::State::SUCCESS);
}
QDate const d(1970, 1, 1);
QTime const t(0, 0, 0);
QDateTime start(d, t, Qt::UTC);
start = start.toLocalTime().addSecs(start_parking_time * 60);
if (start.isValid()) {
QString cs = start.toString(Qt::ISODate);
double cost = calculator.GetCostFromDuration(
tariff, PaymentOption::Option1,
cs.toLocal8Bit().constData(),
duration, false, true);
double minCost = tariff->PaymentOption.find(PaymentOption::Option1)->second.pop_min_price;
if (cost < minCost) {
calcState.setDesc(QString("minCost=%1, cost=%2").arg(minCost, cost));
return calcState.set(CalcState::State::BELOW_MIN_PARKING_PRICE);
}
price->units = cost;
price->netto = cost;
} else {
return calcState.set(CalcState::State::INVALID_START_DATE);
}
return calcState.set(CalcState::State::SUCCESS);
}
CalcState CALCULATE_LIBRARY_API compute_duration_for_parking_ticket(
parking_tariff_t *tariff,
time_t start_parking_time,
double price,
QString &duration) {
CalcState calcState;
QDate const d(1970, 1, 1);
QTime const t(0, 0, 0);
QDateTime start(d, t, Qt::UTC);
start = start.toLocalTime().addSecs(start_parking_time * 60);
if (start.isValid()) {
QString cs = start.toString(Qt::ISODate);
duration = calculator.GetDurationFromCost(tariff, PaymentOption::Option1,
cs.toLocal8Bit().constData(),
price, false, true).c_str();
} else {
return calcState.set(CalcState::State::INVALID_START_DATE);
}
return calcState.set(CalcState::State::SUCCESS);
}