#include <QGridLayout>
#include <QLineEdit>
#include <QPushButton>
#include <QGroupBox>
#include <QLabel>
#include <QSettings>
#include <QCloseEvent>
#include <QFileDialog>

#include "copydialog.h"

CopyDialog::CopyDialog(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f) {
    setAttribute(Qt::WA_DeleteOnClose);
    setWindowTitle(tr("Copy files"));
    QGridLayout *dirGrid = new QGridLayout;
    QLabel *srcL = new QLabel(tr("Source"));
    dirGrid->addWidget(srcL, 0, 0);
    mSrcE = new QLineEdit;
    mSrcE->setReadOnly(true);
    dirGrid->addWidget(mSrcE, 0, 1);
    QLabel *dstL = new QLabel(tr("Destination"));
    dirGrid->addWidget(dstL, 1, 0);
    mDstE = new QLineEdit;
    mDstE->setReadOnly(true);
    dirGrid->addWidget(mDstE, 1, 1);
    QPushButton *dstB = new QPushButton(QIcon::fromTheme("folder"), tr("..."));
    connect(dstB, &QPushButton::clicked, this, &CopyDialog::getDestination);
    dirGrid->addWidget(dstB, 1, 2);
    QLabel *folderL = new QLabel(tr("Folder Name"));
    dirGrid->addWidget(folderL, 2, 0);
    mFolderE = new QLineEdit;
    dirGrid->addWidget(mFolderE, 2, 1);
    QPushButton *refreshB = new QPushButton(QIcon::fromTheme("view-refresh"), QString());
    dirGrid->addWidget(refreshB, 2, 2);
    QGroupBox *dirGB = new QGroupBox("Directories");
    dirGB->setLayout(dirGrid);
    QHBoxLayout *resultL = new QHBoxLayout;
    mResultL = new QLabel;
    mResultL->setAlignment(Qt::AlignTop | Qt::AlignLeft);
    resultL->addWidget(mResultL);
    QGroupBox *resultGB = new QGroupBox(tr("Result"));
    resultGB->setLayout(resultL);
    QHBoxLayout *buttonL = new QHBoxLayout;
    QPushButton *copyB = new QPushButton(tr("Copy!"));
    buttonL->addStretch();
    buttonL->addWidget(copyB);
    QPushButton *closeB = new QPushButton(tr("Close"));
    connect(closeB, &QPushButton::clicked, this, &CopyDialog::close);
    buttonL->addWidget(closeB);
    buttonL->addStretch();
    QVBoxLayout *mainLayout = new QVBoxLayout;
    mainLayout->addWidget(dirGB, Qt::AlignTop);
    mainLayout->addWidget(resultGB, Qt::AlignVCenter);
    mainLayout->addLayout(buttonL, Qt::AlignBottom);
    setLayout(mainLayout);
    readSettings();
}

void CopyDialog::readSettings(){
    QSettings s;
    resize(s.value("copydlgsize").toSize());
    QString dst = s.value("copydlgdst").toString();
    QFileInfo fi(dst);
    if(fi.exists()){
        mDstE->setText(dst);
    }
}

void CopyDialog::getDestination(){
    QString dir = QFileDialog::getExistingDirectory(this, tr("Select destination Folder"));
    mDstE->setText(dir);
}

void CopyDialog::setSource(const QString &src){
    mSrcE->setText(src);
}

void CopyDialog::setDestFolder(const QString &dst){
    mFolderE->setText(dst);
}

void CopyDialog::setSources(const QStringList &sources){
    mSources = sources;
    refresh();
}

void CopyDialog::refresh(){
    QString res;
    for(const QString &p : mSources){
        res.append(QString("%1 %2\n").arg(QChar(0x2b9a)).arg(p));
        res.append(QString("%1 %2\n").arg(QChar(0x2b98)).arg(getDestinationFile(p)));
    }
    mResultL->setText(res);
}

QString CopyDialog::getDestinationFile(const QString &srcFn){
    QFileInfo fi(srcFn);
    if(fi.exists()){
        QString fn = fi.fileName();
        QString destPath = QString("%1/%2/%3").arg(mDstE->text()).arg(mFolderE->text()).arg(fn);
        return destPath;
    }
    return QString();
}

void CopyDialog::closeEvent(QCloseEvent *e){
    QSettings s;
    s.setValue("copydlgsize", size());
    s.setValue("copydlgdst", mDstE->text());
    e->accept();
}