#include "picture.h"
#include <QDrag>
#include <QDragEnterEvent>
#include <QMimeData>
#include <QRegExp>
#include <QMessageBox>
Picture::Picture(QWidget *parent) :
  QMainWindow(parent),
  ui(new Ui::Picture){
    ui->setupUi(this);
    connect(ui->actionOpen_Files,SIGNAL(triggered()),this,SLOT(changeDirectory()));
    setAcceptDrops(true);
    //changeDirectory();
    fillList();
  }
Picture::~Picture(){
  delete ui;
}
void Picture::dragEnterEvent(QDragEnterEvent *event){
  if(event->mimeData()->hasUrls()){
    ui->tabField->setCurrentIndex(0);
    event->acceptProposedAction();
  }
}
void Picture::dropEvent(QDropEvent *event){
  foreach (const QUrl &url, event->mimeData()->urls()) {
    const QString &fileName = url.toLocalFile();
    //if(fileName.contains(QRegExp("\.(?i)(jpe?g|png|gif)$"))){
    ui->fileList->addItem(fileName);
    //}else{
    //    qDebug()<<fileName;
    //}
    //qDebug() << "Dropped file:" << fileName;
  }
}
void Picture::changeDirectory(){
  QString path=QFileDialog::getExistingDirectory(this,tr("Directory"),directory.path());
  if(path.isNull()==false){
    directory.setPath(path);
    fillList();
    ui->log->append("Changed directory to: "+path+"/");
  }else{
    ui->log->append("Could not change directory");
  }
}
void Picture::fillList() {
  ui->fileList->clear();
  //ui->fileList->addItems(directory.entryList());
  foreach(const QString &str,directory.entryList()){
    QImageReader reader(directory.absolutePath()+"/"+str);
    if(!reader.format().isEmpty()){
      ui->fileList->addItem(str);
    }
  }
  if(ui->fileList->count()==0){
    //ui->fileList->addItem("<NO PICTURES>");
  }
}
void Picture::on_cd_clicked(){
  changeDirectory();
}
void Picture::on_erase_clicked(){
  bool ignored=false;
  QStringList myStringList;
  for (int i = 0; i < ui->fileList->count(); ++i)
    myStringList.append(ui->fileList->item(i)->text());
  qDebug() << myStringList;
  //foreach(const QString &str,directory.entryList()){
  foreach(const QString &str,myStringList){
    QImageReader reader(str);
    if(!reader.format().isEmpty()){
      QString fullPath=str;
      try{
        Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(fullPath.toStdString());
        assert (image.get() != 0);
        image->readMetadata();
        image->clearMetadata();
        image->writeMetadata();
      }catch(Exiv2::AnyError& e){
        QMessageBox msgBox;
        msgBox.setInformativeText("The program could not process the file: "+fullPath);
        msgBox.setStandardButtons(QMessageBox::Ok);
        msgBox.setDefaultButton(QMessageBox::Ok);
        int ret=msgBox.exec();
      }
    }else{
      if(!ignored){
        ignored=true;
        ui->log->append("Ignored Files:");
      }
      ui->log->append(str);
    }
  }
  ui->log->append("Done erasing metadata");
}
void Picture::on_refresh_clicked(){
  //fillList();
  ui->fileList->clear();
  ui->log->append("Cleared File List");
}
void Picture::on_clearLog_clicked(){
  ui->log->setText("");
  ui->tabField->setCurrentIndex(0);
}
void Picture::on_erase_pressed(){
  ui->log->append("Erasing metadata from images...");
  ui->tabField->setCurrentIndex(1);
  on_erase_clicked();
}
void Picture::on_processButton_pressed(){
  ui->log->append("Processing images...");
  ui->tabField->setCurrentIndex(1);
  on_processButton_clicked();
}
void Picture::on_processButton_clicked(){
    bool ignored=false;
    QStringList myStringList;
    for (int i = 0; i < ui->fileList->count(); ++i)
      myStringList.append(ui->fileList->item(i)->text());
    qDebug() << myStringList;
    //foreach(const QString &str,directory.entryList()){
    foreach(const QString &str,myStringList){
      QImageReader reader(str);
      if(!reader.format().isEmpty()){
        QString fullPath=str;
        try{
          Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(fullPath.toStdString());
          assert (image.get() != 0);
          image->readMetadata();
          Exiv2::ExifData &exifData = image->exifData();
          exifData["Exif.Photo.UserComment"] = "charset=Ascii "+ui->labelText->text().toStdString();
          image->writeMetadata();
        }catch(Exiv2::AnyError& e){
          QMessageBox msgBox;
          msgBox.setInformativeText("The program could not process the file: "+fullPath);
          msgBox.setStandardButtons(QMessageBox::Ok);
          msgBox.setDefaultButton(QMessageBox::Ok);
          int ret=msgBox.exec();
        }
      }else{
        if(!ignored){
          ignored=true;
          ui->log->append("Ignored Files:");
        }
        ui->log->append(str);
      }
    }
    ui->log->append("Done erasing metadata");
}