#include <QTabWidget>
#include <QGridLayout>
#include <QLabel>
#include <QSettings>
#include <QPushButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLineEdit>
#include <QFileDialog>
#include <QCheckBox>
#include <QColorDialog>

#include "configurationwidget.h"
#include "itemselectionwidget.h"

ConfigurationWidget::ConfigurationWidget(QWidget *parent) : QDialog(parent), mColors(2) {
    //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);

    //exernal programs
    QGridLayout *extL = new QGridLayout;
    mFfProbe = new QLineEdit;
    extL->addWidget(new QLabel(tr("ffprobe")), 0, 0);
    extL->addWidget(mFfProbe, 0, 1);
    QPushButton *browseFfProbeBtn = new QPushButton(tr("Browse..."));
    connect(browseFfProbeBtn, &QPushButton::clicked, this, [=] { browsePathforLE(mFfProbe); });
    extL->addWidget(browseFfProbeBtn, 0, 2);
    mFfMpeg = new QLineEdit;
    extL->addWidget(new QLabel(tr("ffmpeg")), 1, 0);
    extL->addWidget(mFfMpeg, 1, 1);
    QPushButton *browseFfMpegBtn = new QPushButton(tr("Browse..."));
    connect(browseFfMpegBtn, &QPushButton::clicked, this, [=] { browsePathforLE(mFfMpeg); });
    extL->addWidget(browseFfMpegBtn, 1, 2);
    mMkvInfo = new QLineEdit;
    extL->addWidget(new QLabel(tr("mkvinfo")), 2, 0);
    extL->addWidget(mMkvInfo, 2, 1);
    QPushButton *browsemkvBtn = new QPushButton(tr("Browse..."));
    connect(browsemkvBtn, &QPushButton::clicked, this, [=] { browsePathforLE(mMkvInfo); });
    extL->addWidget(browsemkvBtn, 2, 2);
    extL->setAlignment(Qt::AlignTop);
    QWidget *extWidget = new QWidget;
    extWidget->setLayout(extL);

    //copy directories
    mCopyDirW = new ItemSelectionWidget(ItemSelectionWidget::Directories, tr("Directory"));

    //favorite directories
    mFavDirW = new ItemSelectionWidget(ItemSelectionWidget::Directories, tr("Directory"));

    //mime type filters
    mMimeTypeW = new ItemSelectionWidget(ItemSelectionWidget::Item, tr("Mime Type Regex"));

    //colors
    QLabel *baseColorT = new QLabel(tr("Base color"));
    mBaseColorL = new QLabel;
    mBaseColorL->setFrameStyle(QFrame::Sunken | QFrame::Panel);
    mBaseColorL->setScaledContents(true);
    QPushButton *baseColorB = new QPushButton(tr("Choose..."));
    baseColorB->setDisabled(true);
    connect(baseColorB, &QPushButton::clicked, this, [=] { chooseColor(mBaseColorL, 0); });
    QLabel *altColorT = new QLabel(tr("Alternate color"));
    mAltColorL = new QLabel;
    mAltColorL->setFrameStyle(QFrame::Sunken | QFrame::Panel);
    mAltColorL->setScaledContents(true);
    QPushButton *altColorB = new QPushButton(tr("Choose..."));
    altColorB->setDisabled(true);
    connect(altColorB, &QPushButton::clicked, this, [=] { chooseColor(mAltColorL, 1); });
    mUseAltColors = new QCheckBox(tr("Use alternating colors"));
    connect(mUseAltColors, &QCheckBox::stateChanged, this, [=]{
       baseColorB->setEnabled(mUseAltColors->isChecked());
       altColorB->setEnabled(mUseAltColors->isChecked());
    });
    QGridLayout *colorGrid = new QGridLayout;
    colorGrid->setAlignment(Qt::AlignTop);
    colorGrid->addWidget(baseColorT, 0, 0);
    colorGrid->addWidget(mBaseColorL, 0, 1);
    colorGrid->addWidget(baseColorB, 0, 2);
    colorGrid->addWidget(altColorT, 1, 0);
    colorGrid->addWidget(mAltColorL, 1, 1);
    colorGrid->addWidget(altColorB, 1, 2);
    colorGrid->addWidget(mUseAltColors, 2, 0, 1, 3, Qt::AlignHCenter);
    QWidget *colorW = new QWidget;
    colorW->setLayout(colorGrid);

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

    //dialog layout
    QVBoxLayout *mainLayout = new QVBoxLayout;
    QTabWidget *tab = new QTabWidget;
    tab->addTab(dbWidget, tr("Database"));
    tab->addTab(extWidget, tr("Programs"));
    tab->addTab(mCopyDirW, tr("Copy dirs"));
    tab->addTab(mFavDirW, tr("Fav. dirs"));
    tab->addTab(mMimeTypeW, tr("MIME filter"));
    tab->addTab(colorW, tr("Colors"));
    mainLayout->addWidget(tab);
    mainLayout->addLayout(bLayout);
    readSettings();
    setLayout(mainLayout);
    setMinimumWidth(400);
}

void ConfigurationWidget::accept(){
    QSettings s;
    s.setValue("dbhost", mDbHost->text());
    s.setValue("dbuser", mDbUser->text());
    s.setValue("dbpass", mDbPass->text());
    s.setValue("dbname", mDbName->text());
    s.setValue("ext/ffprobe", mFfProbe->text());
    s.setValue("ext/ffmpeg", mFfMpeg->text());
    s.setValue("ext/mkvinfo", mMkvInfo->text());
    QStringList copyDirs = mCopyDirW->items();
    std::sort(copyDirs.begin(), copyDirs.end());
    s.setValue("copydirs", copyDirs);
    QStringList favDirs = mFavDirW->items();
    s.setValue("favdirs", favDirs);
    QStringList mimeFilters = mMimeTypeW->items();
    s.setValue("mimefilters", mimeFilters);
    s.setValue("alternatecolors", mUseAltColors->isChecked());
    s.setValue("basecolor", mColors.at(0));
    s.setValue("altcolor", mColors.at(1));
    QDialog::accept();
}

void ConfigurationWidget::browsePathforLE(QLineEdit *edit){
    QString res = QFileDialog::getOpenFileName(this, tr("Select ffprobe"), QDir::homePath());
    edit->setText(res);
}

void ConfigurationWidget::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());
    mFfProbe->setText(s.value("ext/ffprobe").toString());
    mFfMpeg->setText(s.value("ext/ffmpeg").toString());
    mMkvInfo->setText(s.value("ext/mkvinfo").toString());
    QStringList copyDirs = s.value("copydirs").toStringList();
    std::sort(copyDirs.begin(), copyDirs.end());
    mCopyDirW->setItems(copyDirs);
    QStringList favDirs = s.value("favdirs").toStringList();
    mFavDirW->setItems(favDirs);
    QStringList mimeFilters = s.value("mimefilters").toStringList();
    mMimeTypeW->setItems(mimeFilters);
    mUseAltColors->setChecked(s.value("alternatecolors").toBool());
    QVariant c1 = s.value("basecolor");
    mColors[0] = c1.value<QColor>();
    QPixmap pm1(mBaseColorL->sizeHint());
    pm1.fill(mColors.at(0));
    mBaseColorL->setPixmap(pm1);
    QVariant c2 = s.value("altcolor");
    mColors[1] = c2.value<QColor>();
    QPixmap pm2(mAltColorL->sizeHint());
    pm2.fill(mColors.at(1));
    mAltColorL->setPixmap(pm2);
}

void ConfigurationWidget::chooseColor(QLabel *l, int colorIndex){
    QColor c = QColorDialog::getColor(mColors.at(colorIndex), this);
    if(c.isValid()){
        mColors[colorIndex] = c;
        QPixmap pm(l->sizeHint());
        pm.fill(c);
        l->setPixmap(pm);
    }
}