#include <QTabWidget>
#include <QGridLayout>
#include <QLabel>
#include <QSettings>
#include <QPushButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLineEdit>
#include <QFileDialog>
#include <QStandardItemModel>
#include <QListView>
#include <QItemSelectionModel>

#include "configurationwidget.h"

ConfigurationWidget::ConfigurationWidget(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);

    //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, SIGNAL(clicked()), this, SLOT(browseFfProbe()));
    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, SIGNAL(clicked()), this, SLOT(browseFfMpeg()));
    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, SIGNAL(clicked()), this, SLOT(browseMkvInfo()));
    extL->addWidget(browsemkvBtn, 2, 2);
    extL->setAlignment(Qt::AlignTop);
    QWidget *extWidget = new QWidget;
    extWidget->setLayout(extL);

    //copy directories
    QHBoxLayout *newDirL = new QHBoxLayout;
    newDirL->addWidget(new QLabel(tr("Directory")));
    mDir = new QLineEdit;
    newDirL->addWidget(mDir);
    QPushButton *browseCopyDirBtn = new QPushButton(tr("Browse..."));
    connect(browseCopyDirBtn, SIGNAL(clicked()), this, SLOT(browseCopyDir()));
    newDirL->addWidget(browseCopyDirBtn);
    QPushButton *addDir = new QPushButton(tr("Add"));
    connect(addDir, SIGNAL(clicked()), this, SLOT(addCopyDir()));
    QPushButton *removeDir = new QPushButton(tr("Remove"));
    connect(removeDir, SIGNAL(clicked()), this, SLOT(removeCopyDir()));
    QHBoxLayout *addRemL = new QHBoxLayout;
    addRemL->addStretch();
    addRemL->addWidget(addDir);
    addRemL->addWidget(removeDir);
    mCopyDirM = new QStandardItemModel;
    mCopyDirV = new QListView;
    mCopyDirV->setModel(mCopyDirM);
    connect(mCopyDirV->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)), this, SLOT(selectCopyDir(QModelIndex,QModelIndex)));
    QVBoxLayout *newDirTabL = new QVBoxLayout;
    newDirTabL->addLayout(newDirL);
    newDirTabL->addLayout(addRemL);
    newDirTabL->addWidget(mCopyDirV);
    QWidget *dirWidget = new QWidget;
    dirWidget->setLayout(newDirTabL);

    //buttons
    mAccept = new QPushButton(tr("Save"));
    connect(mAccept, SIGNAL(clicked()), this, SLOT(accept()));
    mCancel = new QPushButton(tr("Cancel"));
    connect(mCancel, SIGNAL(clicked()), this, SLOT(reject()));
    QHBoxLayout *bLayout = new QHBoxLayout;
    bLayout->addStretch();
    bLayout->addWidget(mAccept);
    bLayout->addWidget(mCancel);
    bLayout->addStretch();

    //dialog layout
    QVBoxLayout *mainLayout = new QVBoxLayout;
    QTabWidget *tab = new QTabWidget;
    tab->addTab(dbWidget, tr("Database"));
    tab->addTab(extWidget, tr("Programs"));
    tab->addTab(dirWidget, tr("Copy dirs"));
    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;
    for(int i = 0; i < mCopyDirM->rowCount(); ++i){
        auto item = mCopyDirM->item(i);
        copyDirs << item->text();
    }
    s.setValue("copydirs", copyDirs);
    QDialog::accept();
}

void ConfigurationWidget::browseFfProbe(){
    QString ffprobe = QFileDialog::getOpenFileName(this, tr("Select ffprobe"), QDir::homePath());
    mFfProbe->setText(QDir::toNativeSeparators(ffprobe));
}

void ConfigurationWidget::browseFfMpeg(){
    QString ffmpeg = QFileDialog::getOpenFileName(this, tr("Select ffmpeg"), QDir::homePath());
    mFfMpeg->setText(QDir::toNativeSeparators(ffmpeg));
}

void ConfigurationWidget::browseMkvInfo(){
    QString mkvinfo = QFileDialog::getOpenFileName(this, tr("Select mkvinfo"), QDir::homePath());
    mMkvInfo->setText(QDir::toNativeSeparators(mkvinfo));
}

void ConfigurationWidget::browseCopyDir(){
    QString copyDir = QFileDialog::getExistingDirectory(this, tr("Select Directory"), QDir::homePath());
    mDir->setText(QDir::toNativeSeparators(copyDir));
}

void ConfigurationWidget::addCopyDir(){
    QString dir = mDir->text();
    QFileInfo dinfo(dir);
    if(dinfo.exists() && dinfo.isDir()){
        auto search = mCopyDirM->findItems(dir);
        if(search.isEmpty()){
            QStandardItem *newDir = new QStandardItem(QIcon(":/folder.png"), dir);
            mCopyDirM->insertRow(mCopyDirM->rowCount(), newDir);
        }
    }
}

void ConfigurationWidget::removeCopyDir(){
    QString dir = mDir->text();
    auto search = mCopyDirM->findItems(dir);
    if(!search.isEmpty()){
        mCopyDirM->removeRow(search.first()->row());
    }
}

void ConfigurationWidget::selectCopyDir(const QModelIndex &cur, const QModelIndex &prev){
    Q_UNUSED(prev);
    mDir->setText(cur.data().toString());
}

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();
    foreach(auto d, copyDirs){
        mDir->setText(d);
        addCopyDir();
    }
}