#ifndef FEEDLIST_H
#define FEEDLIST_H

#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QDropEvent>
#include <QDragMoveEvent>
#include <QStringList>
#include <QHash>
#include <QUrl>
#include "rss.h"

class FeedList : public QTreeWidget {

private:
  RssManager *rssmanager;
  QHash<QTreeWidgetItem*, RssFile*> mapping;
  QHash<QString, QTreeWidgetItem*> feeds_items;
  QTreeWidgetItem* current_feed;

public:
  FeedList(QWidget *parent, RssManager *rssmanager): QTreeWidget(parent), rssmanager(rssmanager) {
    setContextMenuPolicy(Qt::CustomContextMenu);
    setDragDropMode(QAbstractItemView::InternalMove);
    setSelectionMode(QAbstractItemView::ExtendedSelection);
    setColumnCount(1);
    QTreeWidgetItem *___qtreewidgetitem = headerItem();
    ___qtreewidgetitem->setText(0, QApplication::translate("RSS", "RSS feeds", 0, QApplication::UnicodeUTF8));
    connect(this, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)), this, SLOT(updateCurrentFeed(QTreeWidgetItem*)));
  }

  void itemAdded(QTreeWidgetItem *item, RssFile* file) {
    mapping[item] = file;
    if(file->getType() == RssFile::STREAM)
      feeds_items[file->getID()] = item;
  }

  void itemRemoved(QTreeWidgetItem *item) {
    RssFile* file = mapping.take(item);
    if(file->getType() == RssFile::STREAM)
      feeds_items.remove(file->getID());
  }

  bool hasFeed(QString url) {
    return feeds_items.contains(QUrl(url).toString());
  }

  RssFile* getRSSItem(QTreeWidgetItem *item) {
    return mapping[item];
  }

  RssFile* getCurrentRSSItem() {
    return mapping[current_feed];
  }

  RssFile::FileType getItemType(QTreeWidgetItem *item) {
    return mapping[item]->getType();
  }

  QString getItemID(QTreeWidgetItem *item) {
    return mapping[item]->getID();
  }

  QTreeWidgetItem* getTreeItemFromUrl(QString url) const{
    return feeds_items[url];
  }

  QTreeWidgetItem* currentItem() const {
    return current_feed;
  }

  QTreeWidgetItem* currentFeed() const {
    return current_feed;
  }

protected slots:
  void updateCurrentFeed(QTreeWidgetItem* new_item) {
    if(getItemType(new_item) == RssFile::STREAM)
      current_feed = new_item;
  }

protected:
  void dragMoveEvent(QDragMoveEvent * event) {
    QTreeWidgetItem *item = itemAt(event->pos());
    if(item && getItemType(item) != RssFile::FOLDER)
      event->ignore();
    else {
      QTreeWidget::dragMoveEvent(event);
    }
  }

  void dropEvent(QDropEvent *event) {
    qDebug("dropEvent");
    QTreeWidgetItem *dest_folder_item =  itemAt(event->pos());
    RssFolder *dest_folder;
    if(dest_folder_item)
      dest_folder = (RssFolder*)getRSSItem(dest_folder_item);
    else
      dest_folder = rssmanager;
    QList<QTreeWidgetItem *> src_items = selectedItems();
    foreach(QTreeWidgetItem *src_item, src_items) {
      RssFile *file = getRSSItem(src_item);
      rssmanager->moveFile(file, dest_folder);
    }
    QTreeWidget::dropEvent(event);
    if(dest_folder_item)
      dest_folder_item->setExpanded(true);
  }

};

#endif // FEEDLIST_H