#include <QtGui>
#include <QSettings>
#include <assert.h>

#include "MainWindow.h"
#include "ConfigDialog.h"
#include "RealtimeWindow.h"
#include "Pages.h"
#include "Settings.h"
#include "Zones.h"


/* cyclist dialog protocol redesign:
 * no zones:
 *    calendar disabled
 *    automatically go into "new" mode
 * zone(s) defined:
 *    click on calendar: sets current zone to that associated with date
 * save clicked:
 *    if new mode, create a new zone starting at selected date, or for all dates
 *    if this is only zone.
 * delete clicked:
 *    deletes currently selected zone
 */

ConfigDialog::ConfigDialog(QDir _home, Zones *_zones, MainWindow *mainWindow) :
    mainWindow(mainWindow), zones(_zones)
{
    setAttribute(Qt::WA_DeleteOnClose);

    home = _home;

    cyclistPage = new CyclistPage(zones);

    contentsWidget = new QListWidget;
    contentsWidget->setViewMode(QListView::IconMode);
    contentsWidget->setIconSize(QSize(96, 84));
    contentsWidget->setMovement(QListView::Static);
    contentsWidget->setMinimumWidth(128);
    contentsWidget->setMaximumWidth(128);
    contentsWidget->setMinimumHeight(128);
    contentsWidget->setSpacing(12);

    configPage = new ConfigurationPage();

    intervalMetricsPage = new IntervalMetricsPage;
    devicePage = new DevicePage(this);

    pagesWidget = new QStackedWidget;
    pagesWidget->addWidget(configPage);
    pagesWidget->addWidget(cyclistPage);
    pagesWidget->addWidget(intervalMetricsPage);
    pagesWidget->addWidget(devicePage);

    closeButton = new QPushButton(tr("Close"));
    saveButton = new QPushButton(tr("Save"));

    createIcons();
    contentsWidget->setCurrentItem(contentsWidget->item(0));

    // connect(closeButton, SIGNAL(clicked()), this, SLOT(reject()));
    // connect(saveButton, SIGNAL(clicked()), this, SLOT(accept()));
    connect(closeButton, SIGNAL(clicked()), this, SLOT(accept()));
    connect(cyclistPage->btnBack, SIGNAL(clicked()), this, SLOT(back_Clicked()));
    connect(cyclistPage->btnForward, SIGNAL(clicked()), this, SLOT(forward_Clicked()));
    connect(cyclistPage->btnDelete, SIGNAL(clicked()), this, SLOT(delete_Clicked()));
    connect(cyclistPage->calendar, SIGNAL(selectionChanged()), this, SLOT(calendarDateChanged()));

    // connect the pieces...
    connect(devicePage->typeSelector, SIGNAL(currentIndexChanged(int)), this, SLOT(changedType(int)));
    connect(devicePage->addButton, SIGNAL(clicked()), this, SLOT(devaddClicked()));
    connect(devicePage->delButton, SIGNAL(clicked()), this, SLOT(devdelClicked()));
    connect(devicePage->pairButton, SIGNAL(clicked()), this, SLOT(devpairClicked()));

    horizontalLayout = new QHBoxLayout;
    horizontalLayout->addWidget(contentsWidget);
    horizontalLayout->addWidget(pagesWidget, 1);

    buttonsLayout = new QHBoxLayout;
    buttonsLayout->addStretch(1);
    buttonsLayout->addWidget(closeButton);
    buttonsLayout->addWidget(saveButton);

    mainLayout = new QVBoxLayout;
    mainLayout->addLayout(horizontalLayout);
    mainLayout->addStretch(1);
    mainLayout->addSpacing(12);
    mainLayout->addLayout(buttonsLayout);
    setLayout(mainLayout);

    setWindowTitle(tr("Config Dialog"));
}

void ConfigDialog::createIcons()
{
    QListWidgetItem *configButton = new QListWidgetItem(contentsWidget);
    configButton->setIcon(QIcon(":/images/config.png"));
    configButton->setText(tr("Configuration"));
    configButton->setTextAlignment(Qt::AlignHCenter);
    configButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);


    QListWidgetItem *cyclistButton = new QListWidgetItem(contentsWidget);
    cyclistButton->setIcon(QIcon(":images/cyclist.png"));
    cyclistButton->setText(tr("Cyclist Info"));
    cyclistButton->setTextAlignment(Qt::AlignHCenter);
    cyclistButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

    QListWidgetItem *intervalMetricsButton = new QListWidgetItem(contentsWidget);
    intervalMetricsButton->setIcon(QIcon(":images/imetrics.png"));
    intervalMetricsButton->setText(tr("Interval Metrics"));
    intervalMetricsButton->setTextAlignment(Qt::AlignHCenter);
    intervalMetricsButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

    QListWidgetItem *realtimeButton = new QListWidgetItem(contentsWidget);
    realtimeButton->setIcon(QIcon(":images/arduino.png"));
    realtimeButton->setText(tr("Devices"));
    realtimeButton->setTextAlignment(Qt::AlignHCenter);
    realtimeButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

    connect(contentsWidget,
            SIGNAL(currentItemChanged(QListWidgetItem *, QListWidgetItem *)),
            this, SLOT(changePage(QListWidgetItem *, QListWidgetItem*)));

    connect(saveButton, SIGNAL(clicked()), this, SLOT(save_Clicked()));
}


void ConfigDialog::createNewRange()
{
}

void ConfigDialog::changePage(QListWidgetItem *current, QListWidgetItem *previous)
{
    if (!current)
        current = previous;

    pagesWidget->setCurrentIndex(contentsWidget->row(current));
}

// if save is clicked, we want to:
//   new mode:   create a new zone starting at the selected date (which may be null, implying BEGIN
//   ! new mode: change the CP associated with the present mode
void ConfigDialog::save_Clicked()
{
    boost::shared_ptr<QSettings> settings = GetApplicationSettings();

    if (configPage->langCombo->currentIndex()==0)
        settings->setValue(GC_LANG, "en");
    else if (configPage->langCombo->currentIndex()==1)
        settings->setValue(GC_LANG, "fr");
    else if (configPage->langCombo->currentIndex()==2)
        settings->setValue(GC_LANG, "ja");

    if (configPage->unitCombo->currentIndex()==0)
        settings->setValue(GC_UNIT, "Metric");
    else if (configPage->unitCombo->currentIndex()==1)
        settings->setValue(GC_UNIT, "Imperial");

    settings->setValue(GC_ALLRIDES_ASCENDING, configPage->allRidesAscending->checkState());
    settings->setValue(GC_CRANKLENGTH, configPage->crankLengthCombo->currentText());
    settings->setValue(GC_BIKESCOREDAYS, configPage->BSdaysEdit->text());
    settings->setValue(GC_BIKESCOREMODE, configPage->bsModeCombo->currentText());
    settings->setValue(GC_WORKOUTDIR, configPage->workoutDirectory->text());
    settings->setValue(GC_INITIAL_STS, cyclistPage->perfManStart->text());
    settings->setValue(GC_INITIAL_LTS, cyclistPage->perfManStart->text());
    settings->setValue(GC_STS_DAYS, cyclistPage->perfManSTSavg->text());
    settings->setValue(GC_LTS_DAYS, cyclistPage->perfManLTSavg->text());

    // set default stress names if not set:
    settings->setValue(GC_STS_NAME, settings->value(GC_STS_NAME,tr("Short Term Stress")));
    settings->setValue(GC_STS_ACRONYM, settings->value(GC_STS_ACRONYM,tr("STS")));
    settings->setValue(GC_LTS_NAME, settings->value(GC_LTS_NAME,tr("Long Term Stress")));
    settings->setValue(GC_LTS_ACRONYM, settings->value(GC_LTS_ACRONYM,tr("LTS")));
    settings->setValue(GC_SB_NAME, settings->value(GC_SB_NAME,tr("Stress Balance")));
    settings->setValue(GC_SB_ACRONYM, settings->value(GC_SB_ACRONYM,tr("SB")));


    // if the CP text entry reads invalid, there's nothing we can do
    int cp = cyclistPage->getCP();
    if (cp == 0) {
	QMessageBox::warning(this, tr("Invalid CP"), "Please enter valid CP and try again.");
	cyclistPage->setCPFocus();
	return;
    }

    // if for some reason we have no zones yet, then create them
    int range = cyclistPage->getCurrentRange();

    // if this is new mode, or if no zone ranges are yet defined, set up the new range
    if ((range == -1) || (cyclistPage->isNewMode()))
	cyclistPage->setCurrentRange(range = zones->insertRangeAtDate(cyclistPage->selectedDate(), cp));
    else
	zones->setCP(range, cyclistPage->getText().toInt());

    zones->setZonesFromCP(range);

    // update the "new zone" checkbox to visible and unchecked
    cyclistPage->checkboxNew->setChecked(Qt::Unchecked);
    cyclistPage->checkboxNew->setEnabled(true);

    zones->write(home);

    intervalMetricsPage->saveClicked();

    // Save the device configuration...
    DeviceConfigurations all;
    all.writeConfig(devicePage->deviceListModel->Configuration);

    // Tell MainWindow we changed config, so it can emit the signal
    // configChanged() to all its children
    mainWindow->notifyConfigChanged();
}

void ConfigDialog::moveCalendarToCurrentRange() {
    int range = cyclistPage->getCurrentRange();

    if (range < 0)
	return;

    QDate date;

    // put the cursor at the beginning of the selected range if it's not the first
    if (range > 0)
        date = zones->getStartDate(cyclistPage->getCurrentRange());
    // unless the range is the first range, in which case it goes at the end of that range
    // use JulianDay to subtract one day from the end date, which is actually the first
    // day of the following range
    else
        date = QDate::fromJulianDay(zones->getEndDate(cyclistPage->getCurrentRange()).toJulianDay() - 1);

    cyclistPage->setSelectedDate(date);
}

void ConfigDialog::back_Clicked()
{
    QDate date;
    cyclistPage->setCurrentRange(cyclistPage->getCurrentRange() - 1);
    moveCalendarToCurrentRange();
}

void ConfigDialog::forward_Clicked()
{
    QDate date;
    cyclistPage->setCurrentRange(cyclistPage->getCurrentRange() + 1);
    moveCalendarToCurrentRange();
}

void ConfigDialog::delete_Clicked() {
    int range = cyclistPage->getCurrentRange();
    int num_ranges = zones->getRangeSize();
    assert (num_ranges > 1);
    QMessageBox msgBox;
    msgBox.setText(
		   tr("Are you sure you want to delete the zone range\n"
		      "from %1 to %2?\n"
		      "(%3 range will extend to this date range):") .
		   arg(zones->getStartDateString(cyclistPage->getCurrentRange())) .
		   arg(zones->getEndDateString(cyclistPage->getCurrentRange())) .
		   arg((range > 0) ? "previous" : "next")
		   );
    QPushButton *deleteButton = msgBox.addButton(tr("Delete"),QMessageBox::YesRole);
    msgBox.setStandardButtons(QMessageBox::Cancel);
    msgBox.setDefaultButton(QMessageBox::Cancel);
    msgBox.setIcon(QMessageBox::Critical);
    msgBox.exec();
    if(msgBox.clickedButton() == deleteButton)
	cyclistPage->setCurrentRange(zones->deleteRange(range));

    zones->write(home);
}

void ConfigDialog::calendarDateChanged() {
    int range = zones->whichRange(cyclistPage->selectedDate());
    assert(range >= 0);
    cyclistPage->setCurrentRange(range);
}

//
// DEVICE CONFIG STUFF
//

void
ConfigDialog::changedType(int)
{
// THIS CODE IS DISABLED FOR THIS RELEASE XXX
//    // disable/enable default checkboxes
//    if (devicePage->devices.at(index).download == false) {
//        devicePage->isDefaultDownload->setEnabled(false);
//        devicePage->isDefaultDownload->setCheckState(Qt::Unchecked);
//    } else {
//        devicePage->isDefaultDownload->setEnabled(true);
//    }
//    if (devicePage->devices.at(index).realtime == false) {
//        devicePage->isDefaultRealtime->setEnabled(false);
//        devicePage->isDefaultRealtime->setCheckState(Qt::Unchecked);
//    } else {
//        devicePage->isDefaultRealtime->setEnabled(true);
//    }
    devicePage->setConfigPane();
}

void
ConfigDialog::devaddClicked()
{
    DeviceConfiguration add;
    DeviceTypes Supported;

    // get values from the gui elements
    add.name = devicePage->deviceName->displayText();
    add.type = devicePage->typeSelector->itemData(devicePage->typeSelector->currentIndex()).toInt();
    add.portSpec = devicePage->deviceSpecifier->displayText();
    add.deviceProfile = devicePage->deviceProfile->displayText();

    // NOT IMPLEMENTED IN THIS RELEASE XXX
    //add.isDefaultDownload = devicePage->isDefaultDownload->isChecked() ? true : false;
    //add.isDefaultRealtime = devicePage->isDefaultDownload->isChecked() ? true : false;

    // Validate the name
    QRegExp nameSpec(".+");
    if (nameSpec.exactMatch(add.name) == false) {
        QMessageBox::critical(0, "Invalid Device Name",
                QString("Device Name should be non-blank"));
        return ;
    }

    // Validate the portSpec
    QRegExp antSpec("[^:]*:[^:]*");         // ip:port same as TCP ... for now...
    QRegExp tcpSpec("[^:]*:[^:]*");         // ip:port
#ifdef WIN32
    QRegExp serialSpec("COM[0-9]*");      // COMx for WIN32, /dev/* for others
#else
    QRegExp serialSpec("/dev/.*");      // COMx for WIN32, /dev/* for others
#endif

    // check the portSpec is valid, based upon the connection type
    switch (Supported.getType(add.type).connector) {
        case DEV_ANT :
            if (antSpec.exactMatch(add.portSpec) == false) {
                QMessageBox::critical(0, "Invalid Port Specification",
                QString("For ANT devices the specifier must be ") +
                        "hostname:portnumber");
                return ;
            }
            break;
        case DEV_SERIAL :
            if (serialSpec.exactMatch(add.portSpec) == false) {
                QMessageBox::critical(0, "Invalid Port Specification",
                QString("For Serial devices the specifier must be ") +
#ifdef WIN32
                        "COMn"
#else
                        "/dev/xxxxx"
#endif
                );
                return ;
            }
            break;
        case DEV_TCP :
            if (tcpSpec.exactMatch(add.portSpec) == false) {
                QMessageBox::critical(0, "Invalid Port Specification",
                QString("For TCP streaming devices the specifier must be ") +
                        "hostname:portnumber");
                return ;
            }
            break;
    }

    devicePage->deviceListModel->add(add);
}

void
ConfigDialog::devdelClicked()
{
    devicePage->deviceListModel->del();
}

void
ConfigDialog::devpairClicked()
{
    DeviceConfiguration add;

    // get values from the gui elements
    add.name = devicePage->deviceName->displayText();
    add.type = devicePage->typeSelector->itemData(devicePage->typeSelector->currentIndex()).toInt();
    add.portSpec = devicePage->deviceSpecifier->displayText();
    add.deviceProfile = devicePage->deviceProfile->displayText();

    QProgressDialog *progress = new QProgressDialog("Looking for Devices...", "Abort Scan", 0, 200, this);
    progress->setWindowModality(Qt::WindowModal);

    devicePage->pairClicked(&add, progress);
}