#include <QGridLayout>
#include <QLineEdit>
#include <QLabel>
#include <QPushButton>
#include <QCheckBox>
#include <QTabWidget>
#include <QSettings>
#include <QColorDialog>
#include <QGroupBox>
#include <QRadioButton>

#include "configurationdialog.h"
#include "helper.h"

ConfigurationDialog::ConfigurationDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f) {
    //database setup
    QGridLayout *dbLayout = new QGridLayout;
    mDbHost = new QLineEdit;
    dbLayout->addWidget(new QLabel(tr("Hostname")), 0, 0);
    dbLayout->addWidget(mDbHost, 0, 1);
    mDbUser = new QLineEdit;
    dbLayout->addWidget(new QLabel(tr("Username")), 1, 0);
    dbLayout->addWidget(mDbUser, 1, 1);
    mDbPass = new QLineEdit;
    mDbPass->setEchoMode(QLineEdit::Password);
    dbLayout->addWidget(new QLabel(tr("Password")), 2, 0);
    dbLayout->addWidget(mDbPass, 2, 1);
    mDbName = new QLineEdit;
    dbLayout->addWidget(new QLabel(tr("DB Name")), 3, 0);
    dbLayout->addWidget(mDbName, 3, 1);
    dbLayout->setAlignment(Qt::AlignTop);
    QWidget *dbWidget = new QWidget;
    dbWidget->setLayout(dbLayout);

    //buttons
    QPushButton *acceptB = new QPushButton(tr("Save"));
    connect(acceptB, &QPushButton::clicked, this, &ConfigurationDialog::accept);
    QPushButton *cancelB = new QPushButton(tr("Cancel"));
    connect(cancelB, &QPushButton::clicked, this, &ConfigurationDialog::reject);
    QHBoxLayout *bLayout = new QHBoxLayout;
    bLayout->addStretch();
    bLayout->addWidget(acceptB);
    bLayout->addWidget(cancelB);
    bLayout->addStretch();

    //colors
    QWidget *colorWidget = new QWidget;
    QGridLayout *colorGrid = new QGridLayout;
    colorGrid->setColumnStretch(1, 4);
    colorGrid->addWidget(new QLabel(tr("Base color")), 0, 0);
    mBaseColorL = new QLabel;
    mBaseColorL->setFrameStyle(QFrame::Sunken | QFrame::Panel);
    mBaseColorL->setScaledContents(true);
    colorGrid->addWidget(mBaseColorL, 0, 1);
    QPushButton *baseColorB = new QPushButton;
    baseColorB->setIcon(QIcon(":/fill-color.png"));
    colorGrid->addWidget(baseColorB, 0, 2);
    colorGrid->addWidget(new QLabel(tr("Alt. color")), 1, 0);
    mAltColorL = new QLabel;
    mAltColorL->setFrameStyle(QFrame::Sunken | QFrame::Panel);
    mAltColorL->setScaledContents(true);
    colorGrid->addWidget(mAltColorL, 1, 1);
    QPushButton *altColorB = new QPushButton;
    altColorB->setIcon(QIcon(":/fill-color.png"));
    colorGrid->addWidget(altColorB, 1, 2);
    QVBoxLayout *colorL = new QVBoxLayout;
    colorL->addLayout(colorGrid);
    colorL->addStretch();
    colorWidget->setLayout(colorL);
    mUseAltColors = new QCheckBox(tr("Use alt. row colors"));
    colorGrid->addWidget(mUseAltColors, 2, 1, 1, 2, Qt::AlignLeft);
    connect(baseColorB, &QPushButton::clicked, [=] { chooseColor(mBaseColorL); });
    connect(altColorB, &QPushButton::clicked, [=] { chooseColor(mAltColorL); });

    //scan mode
    QWidget *scanModeWidget = new QWidget;
    QGroupBox *scanGB = new QGroupBox(tr("Scan Mode"));
    mUseBeetRB = new QRadioButton(tr("Use beet ls"));
    QRadioButton *scanDirRB = new QRadioButton(tr("Scan directory"));
    scanDirRB->setChecked(true);
    QHBoxLayout *scanGBL = new QHBoxLayout;
    scanGBL->addWidget(mUseBeetRB);
    scanGBL->addWidget(scanDirRB);
    scanGB->setLayout(scanGBL);
    QGridLayout *scanDirL = new QGridLayout;
    mScanDir = new QLineEdit;
    scanDirL->addWidget(new QLabel(tr("Dir to scan")), 0, 0);
    scanDirL->addWidget(mScanDir, 1, 0);
    QVBoxLayout *scanModeL = new QVBoxLayout;
    scanModeL->addWidget(scanGB);
    scanModeL->addLayout(scanDirL);
    scanModeWidget->setLayout(scanModeL);
    connect(mUseBeetRB, &QRadioButton::toggled, this, &ConfigurationDialog::selectBeet);

    //dialog layout
    QVBoxLayout *mainLayout = new QVBoxLayout;
    QTabWidget *tab = new QTabWidget;
    tab->addTab(dbWidget, tr("Database"));
    tab->addTab(colorWidget, tr("Colors"));
    tab->addTab(scanModeWidget, tr("Scan Mode"));
    mainLayout->addWidget(tab);
    mainLayout->addLayout(bLayout);
    readSettings();
    setLayout(mainLayout);
    setMinimumWidth(400);
}

void ConfigurationDialog::accept(){
    QSettings s;
    s.setValue("dbhost", mDbHost->text());
    s.setValue("dbuser", mDbUser->text());
    s.setValue("dbpass", mDbPass->text());
    s.setValue("dbname", mDbName->text());
    QColor baseColor = Helper::colorFromLabel(mBaseColorL);
    s.setValue("basecolor", baseColor);
    QColor altColor = Helper::colorFromLabel(mAltColorL);
    s.setValue("altcolor", altColor);
    s.setValue("usealtcolors", mUseAltColors->isChecked());
    s.setValue("usebeet", mUseBeetRB->isChecked());
    s.setValue("scandir", mScanDir->text());
    QDialog::accept();
}

void ConfigurationDialog::chooseColor(QWidget *label){
    QLabel *curLabel = static_cast<QLabel*>(label);
    QColor startColor = Helper::colorFromLabel(curLabel);
    if(!startColor.isValid()){
        startColor = palette().base().color();
    }
    QColor newColor = QColorDialog::getColor(startColor, this);
    if(newColor.isValid()){
        QPixmap newPm(curLabel->sizeHint());
        newPm.fill(newColor);
        curLabel->setPixmap(newPm);
    }
}

void ConfigurationDialog::selectBeet(bool checked){
    if(checked){
        mScanDir->setEnabled(false);
    }else{
        mScanDir->setEnabled(true);
    }
}

void ConfigurationDialog::readSettings(){
    QSettings s;
    mDbHost->setText(s.value("dbhost").toString());
    mDbUser->setText(s.value("dbuser").toString());
    mDbPass->setText(s.value("dbpass").toString());
    mDbName->setText(s.value("dbname").toString());
    QVariant baseColorV = s.value("basecolor", palette().base().color());
    QColor baseColor = baseColorV.value<QColor>();
    Helper::fillLabel(mBaseColorL, baseColor);
    QVariant altColorV = s.value("altcolor", palette().alternateBase().color());
    QColor altColor = altColorV.value<QColor>();
    Helper::fillLabel(mAltColorL, altColor);
    bool useAltColors = s.value("usealtcolors", false).toBool();
    mUseAltColors->setChecked(useAltColors);
    bool useBeet = s.value("usebeet", true).toBool();
    mUseBeetRB->setChecked(useBeet);
    QString scanDir = s.value("scandir", tr("<empty>")).toString();
    mScanDir->setText(scanDir);
}