#include "fm_datepicker.h"
#include "fm_layer.h"
#include "../data/rm_video_list_loader.h"
#include <QDir>
#if (RM_MODEL == RM_MODEL_TYPE_TB4000 && USE_DATE_FILTER)
FMDatePicker::FMDatePicker(QWidget *parent) : RMWidgetBase(parent,true)
{
    //FMWidgetBorder(this,"border_frame",0x666666);

    setFixedHeight(40);

    layout = new QVBoxLayout(this);
#if (MODEL_WATEX)
    layout->setMargin(0);
#else
    layout->setMargin(1);
#endif
    layout->setSpacing(0);
    layout->setAlignment(Qt::AlignLeft | Qt::AlignTop);

    //FMWidgetBorder(this,"main_video_frame",0x666666);
    QFont font("Monospace");
    font.setPixelSize(12);

    QWidget* p = new QWidget(this);
    p->setStyleSheet("background-color: #616161;");
    p->setFixedHeight(30);
    p->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed);
    layout->addWidget(p);

    QHBoxLayout* yml = new QHBoxLayout(p);
    yml->setMargin(2);
    yml->setSpacing(2);

    QLabel* label = new QLabel(p);
    label->setText(FM_WSTR(L"년"));
    label->setFont(font);
    label->setStyleSheet("color : #F0F0F0;");
    label->setFixedWidth(20);

    _yearListCombo = new QComboBox(p);
    _yearListCombo->setStyleSheet("font-family: Fixedsys;color : #DDDDDD;");
    _yearListCombo->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Preferred);
    _yearListCombo->setMaxVisibleItems(100);
    connect(_yearListCombo,SIGNAL(currentIndexChanged(int)),SLOT(onYearSelected(int)));
    yml->addWidget(_yearListCombo);
    yml->addWidget(label);
    _yearListCombo->setFocusPolicy(Qt::NoFocus);


    label = new QLabel(p);
    label->setFont(font);
    label->setText(FM_WSTR(L"월"));
    label->setStyleSheet("color : #F0F0F0;");
    label->setFixedWidth(20);

    _monthListCombo = new QComboBox(p);
    _monthListCombo->setStyleSheet("font-family: Fixedsys;color : #DDDDDD;");
    _monthListCombo->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Preferred);
    _monthListCombo->setMaxVisibleItems(100);
    _monthListCombo->setFocusPolicy(Qt::NoFocus);

    connect(_monthListCombo,SIGNAL(currentIndexChanged(int)),SLOT(onMonthSelected(int)));
    yml->addWidget(_monthListCombo);
    yml->addWidget(label);

    //#
    label = new QLabel(p);
    label->setText(FM_WSTR(L"일"));
    label->setFont(font);
    label->setStyleSheet("color : #F0F0F0;");
    label->setFixedWidth(20);

    _dayListCombo = new QComboBox(p);
    _dayListCombo->setStyleSheet("font-family: Fixedsys;color : #DDDDDD;");
    _dayListCombo->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Preferred);
    _dayListCombo->setMaxVisibleItems(100);
    _dayListCombo->setFocusPolicy(Qt::NoFocus);

    connect(_dayListCombo,SIGNAL(currentIndexChanged(int)),SLOT(onDaySelected(int)));
    yml->addWidget(_dayListCombo);
    yml->addWidget(label);

}
QString FMDatePicker::_videoFolder(bool bPhoto)
{
    QString root = RMApp::currentRoot;
    if(root.isEmpty()) {
        return "";
    }

    // 영상폴더
    return root + QDir::separator() + (bPhoto ? "Photo" : "Video");
}

void FMDatePicker::refreshYears()
{
    // C:\stroage\testing\TELEBIT\TB4000_S01\20230904_TB4000_SAMPLE_SD\20230904_TB4000_SAMPLE_SD
    QString folder = _videoFolder();
    if(folder.isEmpty()) {
        return;
    }
    QString selected = _yearListCombo->currentText();
    _yearListCombo->clear();
    QDir directory(folder);
    // 2023_07, 2023_08

    QStringList years = directory.entryList(QStringList() << "*",QDir::Dirs|QDir::NoDotAndDotDot|QDir::System|QDir::Hidden,QDir::Name);
    _yearListCombo->blockSignals(true);
    QSet<QString> yms;

    foreach(QString year_month, years) {

        QStringList ym = year_month.split("_");
        if (ym.size() != 2) {
            continue;
        }
        if (!yms.contains(ym.at(0))) {
            yms.insert(ym.at(0));
            _yearListCombo->addItem(ym.at(0));
        }
    }
    _yearListCombo->blockSignals(false);

    //QString last = selected;
    if(!selected.isEmpty()) {
        _yearListCombo->setCurrentText(selected);
    } else if(_yearListCombo->count() > 0) {

        // 가장 최근의 날짜로 변경
        // 1개월만 존재할 경우 이벤트 발생하지 않음
        _yearListCombo->setCurrentIndex(_yearListCombo->count()-1);
        if(_yearListCombo->count() == 1) {
            onYearSelected(0);
        }
    }
}
void FMDatePicker::refreshMonths()
{
    QString folder = _videoFolder();
    if(folder.isEmpty()) {
        return;
    }

    QString year = _yearListCombo->currentText();
    if(year.isEmpty()) {
        return;
    }

    QString selected = _monthListCombo->currentText();
    _monthListCombo->clear();

    QDir directory(folder);
    QStringList months = directory.entryList(QStringList() << "*",QDir::Dirs|QDir::NoDotAndDotDot|QDir::System|QDir::Hidden,QDir::Name);

    _monthListCombo->blockSignals(true);
    QSet<QString> yms;
    foreach(QString year_month, months) {

        if(!year_month.startsWith(year)) {
            continue;
        }
        QStringList ym = year_month.split("_");
        if (ym.size() != 2) {
            continue;
        }
        if (!yms.contains(ym.at(1))) {
            yms.insert(ym.at(1));
            _monthListCombo->addItem(ym.at(1));
        }
    }
    _monthListCombo->blockSignals(false);

    QString last = selected;
    if(!selected.isEmpty()) {
        _monthListCombo->setCurrentText(selected);
    } else if (_monthListCombo->count() > 0) {
        _monthListCombo->setCurrentIndex(_monthListCombo->count()-1);

        // 1개 개월만 존재할 경우 이벤트 발생하지 않아 강제 실행
        if(_monthListCombo->count() == 1) {
            onMonthSelected(0);
        }
    }
}
void FMDatePicker::refreshDays()
{
    QString base = _videoFolder();
    if(base.isEmpty()) {
        return;
    }

    QString year = _yearListCombo->currentText();
    if(year.isEmpty()) {
        return;
    }

    QString month = _monthListCombo->currentText();
    if(month.isEmpty()) {
        return;
    }

    _dayListCombo->clear();

    QString folder = base + QDir::separator() + year + "_" + month;
    if(!QDir(folder).exists()) {
        return;
    }

    QDir directory(folder);
    QStringList days = directory.entryList(QStringList() << "*",QDir::Dirs|QDir::NoDotAndDotDot|QDir::System|QDir::Hidden,QDir::Name);
    _dayListCombo->blockSignals(true);
    foreach(QString day, days) {
        _dayListCombo->addItem(day);
    }
    _dayListCombo->blockSignals(false);
    if(days.size() > 0) {
        onDaySelected(0);
    }
}
QString FMDatePicker::_videoDayFolder(bool bPhoto)
{
    QString base = _videoFolder(bPhoto);
    if(base.isEmpty()) {
        return "";
    }

    QString year = _yearListCombo->currentText();
    QString month = _monthListCombo->currentText();
    QString day = _dayListCombo->currentText();
    if(year.isEmpty() || month.isEmpty() || day.isEmpty()) {
        return "";
    }

    return QDir::cleanPath(base + QDir::separator() + year + "_" + month + QDir::separator() + day);
}

void FMDatePicker::onDaySelected(int index)
{
    QString folder = _videoDayFolder();
    if(folder.isEmpty()) {
        return;
    }

    // 기타 폴더 가능, 전후방 동일 폴더 가능
    QList<QUrl> list;
    RMVideoFileList::appendFolderToList(folder,list);

    RMVideoFileListLoader* loader = NULL;
    loader = new RMVideoFileListLoader(list);
    QThreadPool::globalInstance()->start(loader,5);
}
void FMDatePicker::onMonthSelected(int index)
{
    Q_UNUSED(index)

    QString base = _videoFolder();
    if(base.isEmpty()) {
        return;
    }

    QString year = _yearListCombo->currentText();
    if(year.isEmpty()) {
        return;
    }

    QString month = _monthListCombo->currentText();
    if(month.isEmpty()) {
        return;
    }

    QString folder = base + QDir::separator() + year + "_" + month;
    if(!QDir(folder).exists()) {
        return;
    }

    //qInfo() << _monthListCombo->currentText() << __FUNCTION__;

    // 월 선택시 파일 항목 읽어서 '일'항목 생성해야함
    refreshDays();
}
void FMDatePicker::onYearSelected(int index)
{
    Q_UNUSED(index)
    _monthListCombo->clear();
    refreshMonths();
}
void FMDatePicker::onAppEvent(RMApp::Event event, int param)
{
    Q_UNUSED(param)
    if(event == RMApp::ROOT_FOLDER_OPEN) {
        qInfo() << event << RMApp::currentRoot <<  __FUNCTION__;
        refreshYears();
    } else if(event == RMApp::NO_ROOT_FOLDER_OPEN) {
        _yearListCombo->clear();
        _monthListCombo->clear();
        _dayListCombo->clear();
    }
    //Q_UNUSED(param);
    //Q_UNUSED(event);
}
#endif