/*
 * Copyright (C) OpenTX
 *
 * Based on code named
 *   th9x - http://code.google.com/p/th9x
 *   er9x - http://code.google.com/p/er9x
 *   gruvin9x - http://code.google.com/p/gruvin9x
 *
 * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include "splashlibrarydialog.h"
#include "ui_splashlibrarydialog.h"
#include "appdata.h"
#include "helpers.h"
#include "firmwareinterface.h"
#include "helpers.h"

SplashLibraryDialog::SplashLibraryDialog(QWidget *parent, QString * filename):
  QDialog(parent),
  ui(new Ui::SplashLibraryDialog),
  splashFileName(filename)
{
  ui->setupUi(this);
  setWindowIcon(CompanionIcon("library.png"));
  ui->nextPage->setIcon(CompanionIcon("arrow-right.png"));
  ui->prevPage->setIcon(CompanionIcon("arrow-left.png"));
  page = 0;
  getFileList();
  if (imageList.size() > 20) {
    ui->nextPage->setEnabled(true);
  }
  setupPage(page);

  foreach(splashLabel *sl, findChildren<splashLabel *>()) {
    connect(sl, SIGNAL(buttonPressed(int)), this, SLOT(onButtonPressed(int)));
  }
}

SplashLibraryDialog::~SplashLibraryDialog()
{
  delete ui;
}

void SplashLibraryDialog::setupPage(int page)
{
  splashLabel * sl[] = { ui->FwImage_01, ui->FwImage_02, ui->FwImage_03, ui->FwImage_04 ,
        ui->FwImage_05, ui->FwImage_06, ui->FwImage_07, ui->FwImage_08 ,
        ui->FwImage_09, ui->FwImage_10, ui->FwImage_11, ui->FwImage_12 ,
        ui->FwImage_13, ui->FwImage_14, ui->FwImage_15, ui->FwImage_16 ,
        ui->FwImage_17, ui->FwImage_18, ui->FwImage_19, ui->FwImage_20 };
  for(int i=0; i<20; i++) {
    if ((i + 20 * page) < imageList.size()) {
      QImage image(imageList.at(i + 20 * page));
      if (!image.isNull()) {
        sl[i]->setPixmap(makePixMap(image));
        sl[i]->setEnabled(true);
        sl[i]->setId((i + 20 * page));
        sl[i]->setStyleSheet("border:1px solid; border-color:#999999;");
      }
      else {
        sl[i]->clear();
        sl[i]->setDisabled(true);
        sl[i]->setStyleSheet("border:1px;");
        sl[i]->setId(-1);
      }
    }
    else {
      sl[i]->clear();
      sl[i]->setDisabled(true);
      sl[i]->setStyleSheet("border:1px;");
      sl[i]->setId(-1);
    }
  }
  setWindowTitle(tr("Splash Library - page %1 of %2").arg(page + 1).arg(ceil((float) imageList.size() / 20.0)));
}

void SplashLibraryDialog::getFileList()
{
  imageList.clear();
  if (g.embedSplashes()) {
    QDir myRes(":/images/library");
    QStringList tmp = myRes.entryList();
    for (int i = 0; i < tmp.size(); i++) {
      QFileInfo fileInfo = tmp.at(i);
      imageList.append(":/images/library/" + fileInfo.fileName());
    }
  }
  QString libraryPath = g.libDir();
  if (!libraryPath.isEmpty()) {
    if (QDir(libraryPath).exists()) {
      QStringList supportedImageFormats;
      for (int formatIndex = 0; formatIndex < QImageReader::supportedImageFormats().count(); formatIndex++) {
        supportedImageFormats << QLatin1String("*.") + QImageReader::supportedImageFormats()[formatIndex];
      }
      QDir myDir(libraryPath);
      myDir.setNameFilters(supportedImageFormats);
      QStringList tmp = myDir.entryList();
      for (int i = 0; i < tmp.size(); i++) {
        QFileInfo fileInfo = tmp.at(i);
        QString filename = libraryPath + "/" + fileInfo.fileName();
        QImage image(filename);
        if (!image.isNull()) {
          imageList.append(filename);
        }
        else {
          QMessageBox::information(this, tr("Warning"), tr("Invalid image in library %1").arg(filename));
        }
      }
    }
  }
  if (imageList.size() == 0) {
    QMessageBox::information(this, tr("Information"), tr("No valid image found in library, check your settings"));
    QTimer::singleShot(0, this, SLOT(dclose()));
  }
  else {
    imageList.sort();
  }
}

void SplashLibraryDialog::dclose()
{
  close();
}

void SplashLibraryDialog::onButtonPressed(int button)
{
  splashLabel * myLabel = qobject_cast<splashLabel *>(sender());

  foreach(splashLabel *sl, findChildren<splashLabel *>()) {
    if (sl->isEnabled()) {
      sl->setStyleSheet("border:1px solid; border-color:#999999;");
    }
  }
  if (button == Qt::Key_Enter) {
    int id = myLabel->getId();
    splashFileName->clear();
    splashFileName->append(imageList.at(id));
    close();
  }
  myLabel->setStyleSheet("border:1px solid; border-color:#00ffff");
}

void SplashLibraryDialog::on_nextPage_clicked() {
  page++;
  if (page >= (imageList.size() / 20)) {
    ui->nextPage->setDisabled(true);
  }
  ui->prevPage->setEnabled(true);
  setupPage(page);
}

void SplashLibraryDialog::on_prevPage_clicked() {
  page--;
  if (page == 0) {
    ui->prevPage->setDisabled(true);
  }
  if (imageList.size() > 20) {
    ui->nextPage->setEnabled(true);
  }
  setupPage(page);
}