#ifndef TIMELINE_H
#define TIMELINE_H

#include "ui/timelinetools.h"
#include "project/selection.h"

#include <QDockWidget>
#include <QVector>
#include <QTime>

#define TRACK_DEFAULT_HEIGHT 40

#define ADD_OBJ_TITLE 0
#define ADD_OBJ_SOLID 1
#define ADD_OBJ_BARS 2
#define ADD_OBJ_TONE 3
#define ADD_OBJ_NOISE 4
#define ADD_OBJ_AUDIO 5

class QPushButton;
class SourceTable;
class ViewerWidget;
class ComboAction;
class Effect;
class Media;
class Transition;
class TimelineHeader;
class TimelineWidget;
class ResizableScrollBar;
class AudioMonitor;
class QScrollBar;
struct EffectMeta;
struct Sequence;
class Clip;
struct Footage;
struct FootageStream;

bool is_clip_selected(Clip* clip, bool containing);
int getScreenPointFromFrame(double zoom, long frame);
long getFrameFromScreenPoint(double zoom, int x);
bool selection_contains_transition(const Selection& s, Clip* c, int type);
void move_clip(ComboAction *ca, Clip *c, long iin, long iout, long iclip_in, int itrack, bool verify_transitions = true, bool relative = false);
void ripple_clips(ComboAction *ca, Sequence* s, long point, long length, const QVector<int>& ignore = QVector<int>());

struct Ghost {
	int clip;
	long in;
	long out;
	int track;
	long clip_in;

	long old_in;
	long old_out;
	int old_track;
	long old_clip_in;

	// importing variables
	Media* media;
	int media_stream;

	// other variables
	long ghost_length;
	long media_length;
	bool trim_in;
	bool trimming;

	// transition trimming
	Transition* transition;
};

class Timeline : public QDockWidget
{
	Q_OBJECT
public:
	explicit Timeline(QWidget *parent = nullptr);
	~Timeline();

	bool focused();
	void set_zoom(bool in);
	void copy(bool del);
	Clip* split_clip(ComboAction* ca, bool transitions, int p, long frame);
	Clip* split_clip(ComboAction* ca, bool transitions, int p, long frame, long post_in);
	bool split_selection(ComboAction* ca);
	bool split_all_clips_at_point(ComboAction *ca, long point);
	bool split_clip_and_relink(ComboAction* ca, int clip, long frame, bool relink);
	void clean_up_selections(QVector<Selection>& areas);
	void deselect_area(long in, long out, int track);
	void delete_areas_and_relink(ComboAction *ca, QVector<Selection>& areas, bool deselect_areas);
	void relink_clips_using_ids(QVector<int>& old_clips, QVector<Clip*>& new_clips);
	void update_sequence();
	void increase_track_height();
	void decrease_track_height();
	void add_transition();
	QVector<int> get_tracks_of_linked_clips(int i);
	bool has_clip_been_split(int c);
	void ripple_to_in_point(bool in, bool ripple);
	void delete_in_out(bool ripple);
	void previous_cut();
	void next_cut();

	void create_ghosts_from_media(Sequence *seq, long entry_point, QVector<Media *> &media_list);
	void add_clips_from_ghosts(ComboAction *ca, Sequence *s);

	int getTimelineScreenPointFromFrame(long frame);
	long getTimelineFrameFromScreenPoint(int x);
	int getDisplayScreenPointFromFrame(long frame);
	long getDisplayFrameFromScreenPoint(int x);

	int get_snap_range();
	bool snap_to_point(long point, long* l);
	bool snap_to_timeline(long* l, bool use_playhead, bool use_markers, bool use_workarea);
	void set_marker();

	// shared information
	int tool;
	long cursor_frame;
	int cursor_track;
	double zoom;
	bool zoom_just_changed;
	long drag_frame_start;
	int drag_track_start;
	void update_effect_controls();
	bool showing_all;
	double old_zoom;

	QVector<int> video_track_heights;
	QVector<int> audio_track_heights;
	int get_track_height_size(bool video);
	int calculate_track_height(int track, int height);

	// snapping
	bool snapping;
	bool snapped;
	long snap_point;

	// selecting functions
	bool selecting;
	int selection_offset;
	void delete_selection(QVector<Selection> &selections, bool ripple);
	void select_all();
	bool rect_select_init;
	bool rect_select_proc;
	int rect_select_x;
	int rect_select_y;
	int rect_select_w;
	int rect_select_h;

	// moving
	bool moving_init;
	bool moving_proc;
	QVector<Ghost> ghosts;
	bool video_ghosts;
	bool audio_ghosts;
	bool move_insert;

	// trimming
	int trim_target;
	bool trim_in_point;
	int transition_select;

	// splitting
	bool splitting;
	QVector<int> split_tracks;
	QVector<int> split_cache;

	// importing
	bool importing;
	bool importing_files;

	// creating variables
	bool creating;
	int creating_object;

	// transition variables
	bool transition_tool_init;
	bool transition_tool_proc;
	int transition_tool_pre_clip;
	int transition_tool_post_clip;
	int transition_tool_type;
	const EffectMeta* transition_tool_meta;
	int transition_tool_side;

	// hand tool variables
	bool hand_moving;
	int drag_x_start;
	int drag_y_start;

	bool block_repaints;

	TimelineHeader* headers;
	AudioMonitor* audio_monitor;
	ResizableScrollBar* horizontalScrollBar;

	QPushButton* toolArrowButton;
	QPushButton* toolEditButton;
	QPushButton* toolRippleButton;
	QPushButton* toolRazorButton;
	QPushButton* toolSlipButton;
	QPushButton* toolSlideButton;
	QPushButton* toolHandButton;
	QPushButton* toolTransitionButton;
	QPushButton* snappingButton;

	void scroll_to_frame(long frame);
	void select_from_playhead();

	bool can_ripple_empty_space(long frame, int track);

	void resizeEvent(QResizeEvent *event);
public slots:
	void paste(bool insert = false);
	void repaint_timeline();
	void toggle_show_all();
	void deselect();
	void toggle_links();
	void split_at_playhead();
	void ripple_delete_empty_space();

private slots:
	void zoom_in();
	void zoom_out();
	void snapping_clicked(bool checked);
	void add_btn_click();
	void add_menu_item(QAction*);
	void setScroll(int);
	void record_btn_click();
	void transition_tool_click();
	void transition_menu_select(QAction*);
	void resize_move(double d);
	void set_tool();

private:
	void set_zoom_value(double v);
	QVector<QPushButton*> tool_buttons;
	void decheck_tool_buttons(QObject* sender);
	void set_tool(int tool);
	int scroll;
	void set_sb_max();

	void setup_ui();

	int default_track_height;

	// ripple delete empty space variables
	long rc_ripple_min;
	long rc_ripple_max;

	QWidget* timeline_area;
	TimelineWidget* video_area;
	TimelineWidget* audio_area;
	QWidget* editAreas;
	QScrollBar* videoScrollbar;
	QScrollBar* audioScrollbar;
	QPushButton* zoomInButton;
	QPushButton* zoomOutButton;
	QPushButton* recordButton;
	QPushButton* addButton;
	QWidget* tool_button_widget;
};

#endif // TIMELINE_H