#ifndef CALCULATE_PRICE_H
#define CALCULATE_PRICE_H

#include <time.h>
#include <inttypes.h>
#include "tariff_time_range.h"

#include <QString>
#include <QDateTime>

#ifdef WIN32
#ifdef CALCULATE_LIBRARY_EXPORTS
#define CALCULATE_LIBRARY_API __declspec(dllexport)
#else
#define CALCULATE_LIBRARY_API __declspec(dllimport)
#endif
#else
#define CALCULATE_LIBRARY_API
#endif

#include "tariff_permit_type.h"

class Configuration;

typedef Configuration parking_tariff_t;

//#ifdef __cplusplus
//extern "C" {
//#endif

struct CALCULATE_LIBRARY_API price_t {
    uint32_t units;
    double netto;
    double brutto;
    double vat_percentage;
    double vat;

    explicit price_t() {
        units = 0;
        netto = brutto = vat_percentage = vat = 0.0;
    }
};

struct CALCULATE_LIBRARY_API CalcState {
    static QString const SUCCESS;
    static QString const ERROR_PARSING_ZONE_NR;
    static QString const ERROR_LOADING_TARIFF;
    static QString const ERROR_PARSING_TARIFF;
    static QString const NEGATIVE_PARKING_TIME;
    static QString const INVALID_START_DATE;
    static QString const WRONG_PARAM_VALUES;
    static QString const WRONG_ISO_TIME_FORMAT;
    static QString const ABOVE_MAX_PARKING_TIME;
    static QString const BELOW_MIN_PARKING_TIME;
    static QString const BELOW_MIN_PARKING_PRICE;
    static QString const ABOVE_MAX_PARKING_PRICE;
    static QString const OVERPAID;
    static QString const OUTSIDE_ALLOWED_PARKING_TIME;

    enum class State : uint8_t {
        SUCCESS,
        ERROR_PARSING_ZONE_NR,
        ERROR_LOADING_TARIFF,
        ERROR_PARSING_TARIFF,
        NEGATIVE_PARKING_TIME,
        INVALID_START_DATE,
        WRONG_PARAM_VALUES,
        WRONG_ISO_TIME_FORMAT,
        ABOVE_MAX_PARKING_TIME,
        BELOW_MIN_PARKING_TIME,
        BELOW_MIN_PARKING_PRICE,
        ABOVE_MAX_PARKING_PRICE,
        OVERPAID,
        OUTSIDE_ALLOWED_PARKING_TIME
    };

    State m_status;
    QString m_desc;
    TariffTimeRange m_allowedTimeRange;

    explicit CalcState()
        : m_status(State::SUCCESS)
        , m_desc("") {
    }

    explicit CalcState(State state, QString desc = "")
        : m_status(state)
        , m_desc(desc) {
    }

    explicit CalcState(State state, QString desc = "",
                       QTime const &from = QTime(),
                       QTime const &until = QTime())
        : m_status(state)
        , m_desc(desc)
        , m_allowedTimeRange(from, until) {
    }

    explicit operator bool() const noexcept {
        return (m_status == State::SUCCESS);
    }

    QString toString() {
        QString s;
        switch (m_status) {
        case State::SUCCESS:
            s = CalcState::SUCCESS;
            break;
        case State::ERROR_PARSING_ZONE_NR:
            s = CalcState::ERROR_PARSING_ZONE_NR;
            break;
        case State::ERROR_LOADING_TARIFF:
            s = CalcState::ERROR_LOADING_TARIFF;
            break;
        case State::ERROR_PARSING_TARIFF:
            s = CalcState::ERROR_PARSING_TARIFF;
            break;
        case State::NEGATIVE_PARKING_TIME:
            s = CalcState::NEGATIVE_PARKING_TIME;
           break;
        case State::ABOVE_MAX_PARKING_TIME:
            s = CalcState::ABOVE_MAX_PARKING_TIME;
            break;
        case State::WRONG_PARAM_VALUES:
            s = CalcState::WRONG_PARAM_VALUES;
            break;
        case State::BELOW_MIN_PARKING_TIME:
            s = CalcState::BELOW_MIN_PARKING_TIME;
            break;
        case State::BELOW_MIN_PARKING_PRICE:
            s = CalcState::BELOW_MIN_PARKING_PRICE;
            break;
        case State::OVERPAID:
            s = CalcState::OVERPAID;
            break;
        case State::INVALID_START_DATE:
            s = CalcState::INVALID_START_DATE;
            break;
        case State::WRONG_ISO_TIME_FORMAT:
            s = CalcState::WRONG_ISO_TIME_FORMAT;
            break;
        case State::OUTSIDE_ALLOWED_PARKING_TIME:
            s = CalcState::OUTSIDE_ALLOWED_PARKING_TIME;
            break;
        case State::ABOVE_MAX_PARKING_PRICE:
            s = CalcState::ABOVE_MAX_PARKING_TIME;
            break;
        }
        return s + ":" + m_desc;
    }

    explicit operator QString () const noexcept {
        QString s;
        switch (m_status) {
        case State::SUCCESS:
            s = CalcState::SUCCESS;
            break;
        case State::ERROR_PARSING_ZONE_NR:
            s = CalcState::ERROR_PARSING_ZONE_NR;
            break;
        case State::ERROR_LOADING_TARIFF:
            s = CalcState::ERROR_LOADING_TARIFF;
            break;
        case State::ERROR_PARSING_TARIFF:
            s = CalcState::ERROR_PARSING_TARIFF;
            break;
        case State::NEGATIVE_PARKING_TIME:
            s = CalcState::NEGATIVE_PARKING_TIME;
           break;
        case State::ABOVE_MAX_PARKING_TIME:
            s = CalcState::ABOVE_MAX_PARKING_TIME;
            break;
        case State::WRONG_PARAM_VALUES:
            s = CalcState::WRONG_PARAM_VALUES;
            break;
        case State::BELOW_MIN_PARKING_TIME:
            s = CalcState::BELOW_MIN_PARKING_TIME;
            break;
        case State::BELOW_MIN_PARKING_PRICE:
            s = CalcState::BELOW_MIN_PARKING_PRICE;
            break;
        case State::OVERPAID:
            s = CalcState::OVERPAID;
            break;
        case State::INVALID_START_DATE:
            s = CalcState::INVALID_START_DATE;
            break;
        case State::WRONG_ISO_TIME_FORMAT:
            s = CalcState::WRONG_ISO_TIME_FORMAT;
            break;
        case State::OUTSIDE_ALLOWED_PARKING_TIME:
            s = CalcState::OUTSIDE_ALLOWED_PARKING_TIME;
            break;
        case State::ABOVE_MAX_PARKING_PRICE:
            s = CalcState::ABOVE_MAX_PARKING_TIME;
            break;
        }
        return s + ":" + m_desc;
    }

    CalcState &set(State s) { m_status = s; return *this; }
    CalcState &setStatus(State s) { return set(s); }
    CalcState &setStatus(QString const &desc) {
        if (desc == SUCCESS) {
            m_status = State::SUCCESS;
        } else
        if (desc == ERROR_PARSING_ZONE_NR) {
            m_status = State::ERROR_PARSING_ZONE_NR;
        } else
        if (desc == ERROR_LOADING_TARIFF) {
            m_status = State::SUCCESS;
        } else
        if (desc == ERROR_PARSING_TARIFF) {
            m_status = State::ERROR_LOADING_TARIFF;
        } else
        if (desc == NEGATIVE_PARKING_TIME) {
            m_status = State::NEGATIVE_PARKING_TIME;
        } else
        if (desc == INVALID_START_DATE) {
            m_status = State::INVALID_START_DATE;
        } else
        if (desc == WRONG_PARAM_VALUES) {
            m_status = State::WRONG_PARAM_VALUES;
        } else
        if (desc == WRONG_ISO_TIME_FORMAT) {
            m_status = State::WRONG_ISO_TIME_FORMAT;
        } else
        if (desc == ABOVE_MAX_PARKING_TIME) {
            m_status = State::ABOVE_MAX_PARKING_TIME;
        } else
        if (desc == BELOW_MIN_PARKING_TIME) {
            m_status = State::BELOW_MIN_PARKING_TIME;
        } else
        if (desc == BELOW_MIN_PARKING_PRICE) {
            m_status = State::BELOW_MIN_PARKING_PRICE;
        } else
        if (desc == OVERPAID) {
            m_status = State::OVERPAID;
        } else
        if (desc == OUTSIDE_ALLOWED_PARKING_TIME) {
            m_status = State::OUTSIDE_ALLOWED_PARKING_TIME;
        } else
        if (desc == ABOVE_MAX_PARKING_PRICE) {
            m_status = State::ABOVE_MAX_PARKING_PRICE;
        }

        return *this;
    }
    State getStatus() const { return m_status; }
    CalcState &setDesc(QString const &s) { m_desc = s; return *this; }

    void setAllowedTimeRange(QTime const &from, QTime const &until) {
        m_allowedTimeRange.setTimeRange(from, until);
    }

    TariffTimeRange getAllowedTimeRange() {
        return m_allowedTimeRange;
    }
};

CalcState CALCULATE_LIBRARY_API init_tariff(parking_tariff_t **tariff,
                                            char const *config_file);
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);

QList<int> CALCULATE_LIBRARY_API get_time_steps(Configuration *cfg);

int CALCULATE_LIBRARY_API get_minimal_parkingtime(Configuration const *cfg,
                                                  PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING,
                                                  int paymentOptionIndex=0);

int CALCULATE_LIBRARY_API get_maximal_parkingtime(Configuration const *cfg,
                                                  PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING,
                                                  int paymentOptionIndex=0);

int CALCULATE_LIBRARY_API get_minimal_parkingprice(Configuration *cfg,
                                                   PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING,
                                                   int paymentOptionIndex = 0,
                                                   QDateTime const &start = QDateTime::currentDateTime());

int CALCULATE_LIBRARY_API get_maximal_parkingprice(Configuration *cfg,
                                                   PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING,
                                                   int paymentOptionIndex=0);

int CALCULATE_LIBRARY_API compute_product_price(Configuration const *cfg,
                                                PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING,
                                                QDateTime const &start = QDateTime::currentDateTime(),
                                                QDateTime *productStart = nullptr,
                                                QDateTime *productEnd = nullptr);

CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(       // deprecated
                                            parking_tariff_t *tariff,
                                            time_t start_parking_time,
                                            time_t end_parking_time,
                                            struct price_t *price);

CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
                                            parking_tariff_t *tariff,
                                            QDateTime &start_parking_time,
                                            int netto_parking_time,
                                            QDateTime &end_parking_time,    // return value
                                            struct price_t *price,          // return value
                                            bool prepaid = true);

CalcState CALCULATE_LIBRARY_API compute_duration_for_parking_ticket(        // deprecated
                                            parking_tariff_t *tariff,
                                            time_t start_parking_time,
                                            double cost,
                                            QString &duration);

CalcState CALCULATE_LIBRARY_API compute_duration_for_parking_ticket(
                                            parking_tariff_t *tariff,
                                            QDateTime const &start_parking_time,
                                            double cost,
                                            QDateTime &ticketEndTime);      // return value

CalcState CALCULATE_LIBRARY_API compute_duration_for_daily_ticket(
                                            parking_tariff_t *tariff,
                                            QDateTime const &start_parking_time,
                                            QDateTime &ticketEndTime);

CalcState CALCULATE_LIBRARY_API compute_price_for_daily_ticket(
                                            parking_tariff_t *tariff,
                                            QDateTime const &start_parking_time,
                                            QDateTime &ticketEndTime,
                                            PERMIT_TYPE permitType,
                                            struct price_t *price);
//#ifdef __cplusplus
//} // extern "C"
//#endif

#endif // CALCULATE_PRICE_H