#ifndef LOADTHREAD_H
#define LOADTHREAD_H

#include <QThread>
#include <QDir>
#include <QXmlStreamReader>
#include <QMutex>
#include <QWaitCondition>
#include <QMessageBox>

class Media;
struct Footage;
class Clip;
struct Sequence;
class LoadDialog;
struct TransitionData;
struct EffectMeta;

class LoadThread : public QThread
{
	Q_OBJECT
public:
	LoadThread(LoadDialog* l, bool a);
	void run();
	void cancel();
signals:
	void start_question(const QString &title, const QString &text, int buttons);
	void success();
	void error();
	void start_create_effect_ui(QXmlStreamReader* stream, Clip* c, int type, const QString *effect_name, const EffectMeta* meta, long effect_length, bool effect_enabled);
	void start_create_dual_transition(const TransitionData* td, Clip* primary, Clip* secondary, const EffectMeta* meta);
	void report_progress(int p);
private slots:
	void question_func(const QString &title, const QString &text, int buttons);
	void error_func();
	void success_func();
	void create_effect_ui(QXmlStreamReader* stream, Clip* c, int type, const QString *effect_name, const EffectMeta* meta, long effect_length, bool effect_enabled);
	void create_dual_transition(const TransitionData* td, Clip* primary, Clip* secondary, const EffectMeta* meta);
private:
	LoadDialog* ld;
	bool autorecovery;

	bool load_worker(QFile& f, QXmlStreamReader& stream, int type);
	void load_effect(QXmlStreamReader& stream, Clip* c);

	void read_next(QXmlStreamReader& stream);
	void read_next_start_element(QXmlStreamReader& stream);
	void update_current_element_count(QXmlStreamReader& stream);

	Sequence* open_seq;
	QVector<Media*> loaded_media_items;
	QDir proj_dir;
	QDir internal_proj_dir;
	QString internal_proj_url;
	bool show_err;
	QString error_str;

	bool is_element(QXmlStreamReader& stream);

	QVector<Media*> loaded_folders;
	QVector<Clip*> loaded_clips;
	QVector<Media*> loaded_sequences;
	Media* find_loaded_folder_by_id(int id);

	int current_element_count;
	int total_element_count;

	QMutex mutex;
	QWaitCondition waitCond;

	bool cancelled;
	bool xml_error;

	QMessageBox::StandardButton question_btn;
};

#endif // LOADTHREAD_H