/**
 * @file LogBook.cpp
 * @brief Implementation of LogBook class
 */
#include "LogBook.h"

#include <QDebug>
#include <QDir>
#include <QFontMetrics>
#include <QStandardPaths>

namespace {
auto logFileName = "js8call_log.adi";
auto countryFileName = "cty.dat";
} // namespace

/**
 * @brief Initialize the logbook by loading country data and existing log
 * entries.
 */

void LogBook::init() {
    QDir dataPath{
        QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation)};
    QString countryDataFilename;
    if (dataPath.exists(countryFileName)) {
        // User override
        countryDataFilename = dataPath.absoluteFilePath(countryFileName);
    } else {
        countryDataFilename = QString{":/"} + countryFileName;
    }

    _countries.init(countryDataFilename);
    _countries.load();

    _worked.init(_countries.getCountryNames());

    _log.init(dataPath.absoluteFilePath(logFileName));
    _log.load();

    _setAlreadyWorkedFromLog();
}

/**
 * @brief Populate the CountriesWorked instance based on existing log entries.
 */
void LogBook::_setAlreadyWorkedFromLog() {
    QList<QString> calls = _log.getCallList();
    QString c;
    foreach (c, calls) {
        QString countryName = _countries.find(c);
        if (countryName.length() > 0) {
            _worked.setAsWorked(countryName);
        }
    }
}

/**
 * @brief Check if a call has been worked before on a specific band.
 * @param call The callsign to check.
 * @param band The band to check.
 * @return True if the call has been worked before on the specified band, false
 * otherwise.
 */
bool LogBook::hasWorkedBefore(const QString &call, const QString &band) {
    return _log.match(call, band);
}

/**
 * @brief Match a callsign to its country and check if it has been worked
 * before.
 * @param call The callsign to match.
 * @param countryName Output parameter to hold the matched country name.
 * @param callWorkedBefore Output parameter indicating if the call has been
 * worked before.
 * @param countryWorkedBefore Output parameter indicating if the country has
 * been worked before.
 */
void LogBook::match(/*in*/ const QString call,
                    /*out*/ QString &countryName, bool &callWorkedBefore,
                    bool &countryWorkedBefore) const {
    if (call.isEmpty()) {
        return;
    }

    QString currentBand = ""; // match any band
    callWorkedBefore = _log.match(call, currentBand);
    countryName = _countries.find(call);

    if (countryName.length() > 0) { //  country was found
        countryWorkedBefore = _worked.getHasWorked(countryName);
    } else {
        countryName = "where?"; // error: prefix not found
        countryWorkedBefore = false;
    }
}

/**
 * @brief Find details associated with a callsign in the logbook.
 * @param call The callsign to search for.
 * @param grid Output parameter to hold the grid locator.
 * @param date Output parameter to hold the date of the QSO.
 * @param name Output parameter to hold the name of the operator.
 * @param comment Output parameter to hold any comments associated with the QSO.
 * @return True if details were found, false otherwise.
 */
bool LogBook::findCallDetails(
    /*in*/
    const QString call,
    /*out*/
    QString &grid, QString &date, QString &name, QString &comment) const {
    if (call.isEmpty()) {
        return false;
    }

    auto qsos = _log.find(call);
    if (qsos.isEmpty()) {
        return false;
    }

    foreach (auto qso, qsos) {
        if (grid.isEmpty() && !qso.grid.isEmpty())
            grid = qso.grid;
        if (date.isEmpty() && !qso.date.isEmpty())
            date = qso.date;
        if (name.isEmpty() && !qso.name.isEmpty())
            name = qso.name;
        if (comment.isEmpty() && !qso.comment.isEmpty())
            comment = qso.comment;
    }

    return true;
}

/**
 * @brief Add a new QSO to the logbook and mark the country as worked.
 * @param call The callsign of the contacted station.
 * @param band The band on which the QSO was made.
 * @param mode The mode of the QSO.
 * @param submode The submode of the QSO.
 * @param grid The grid locator of the contacted station.
 * @param date The date of the QSO.
 * @param name The name of the operator.
 * @param comment Any comments associated with the QSO.
 */
void LogBook::addAsWorked(const QString call, const QString band,
                          const QString mode, const QString submode,
                          const QString grid, const QString date,
                          const QString name, const QString comment) {
    _log.add(call, band, mode, submode, grid, date, name, comment);
    QString countryName = _countries.find(call);
    if (countryName.length() > 0)
        _worked.setAsWorked(countryName);
}