#include "timecodeeffect.h"

#include <QGridLayout>
#include <QLabel>
#include <QOpenGLTexture>
#include <QTextEdit>
#include <QPainter>
#include <QPushButton>
#include <QColorDialog>
#include <QFontDatabase>
#include <QComboBox>
#include <QWidget>
#include <QtMath>

#include "ui/labelslider.h"
#include "ui/collapsiblewidget.h"
#include "project/clip.h"
#include "project/sequence.h"
#include "panels/viewer.h"
#include "ui/comboboxex.h"
#include "ui/colorbutton.h"
#include "ui/fontcombobox.h"
#include "io/config.h"
#include "playback/playback.h"

TimecodeEffect::TimecodeEffect(Clip *c, const EffectMeta* em) :
	Effect(c, em)
{
	enable_always_update = true;
	enable_superimpose = true;

	EffectRow* tc_row = add_row("Timecode");
	tc_select = tc_row->add_field(EFFECT_FIELD_COMBO, "tc_selector");
	tc_select->add_combo_item("Sequence", true);
	tc_select->add_combo_item("Media", false);
	tc_select->set_combo_index(0);

	scale_val = add_row("Scale")->add_field(EFFECT_FIELD_DOUBLE, "scale", 2);
	scale_val->set_double_minimum_value(1);
	scale_val->set_double_default_value(100);
	scale_val->set_double_maximum_value(1000);

	color_val = add_row("Color")->add_field(EFFECT_FIELD_COLOR, "color", 2);
	color_val->set_color_value(Qt::white);

	color_bg_val = add_row("Background Color")->add_field(EFFECT_FIELD_COLOR, "bgcolor", 2);
	color_bg_val->set_color_value(Qt::black);

	bg_alpha = add_row("Background Opacity")->add_field(EFFECT_FIELD_DOUBLE, "bgalpha", 2);
	bg_alpha->set_double_minimum_value(0);
	bg_alpha->set_double_maximum_value(100);
	bg_alpha->set_double_default_value(50);

	EffectRow* offset = add_row("Offset");
	offset_x_val = offset->add_field(EFFECT_FIELD_DOUBLE, "offsetx");
	offset_y_val = offset->add_field(EFFECT_FIELD_DOUBLE, "offsety");

	prepend_text = add_row("Prepend")->add_field(EFFECT_FIELD_STRING, "prepend", 2);
}


void TimecodeEffect::redraw(double timecode) {
	if (tc_select->get_combo_data(timecode).toBool()){
		display_timecode = prepend_text->get_string_value(timecode) + frame_to_timecode(sequence->playhead, config.timecode_view, sequence->frame_rate);}
	else {
		double media_rate = parent_clip->getMediaFrameRate();
		display_timecode = prepend_text->get_string_value(timecode) + frame_to_timecode(timecode * media_rate, config.timecode_view, media_rate);}
	img.fill(Qt::transparent);

	QPainter p(&img);
	p.setRenderHint(QPainter::Antialiasing);
	int width = img.width();
	int height = img.height();

	// set font
	font.setStyleHint(QFont::Helvetica, QFont::PreferAntialias);
	font.setFamily("Helvetica");
	font.setPixelSize(qCeil(scale_val->get_double_value(timecode)*.01*(height/10)));
	p.setFont(font);
	QFontMetrics fm(font);

	QPainterPath path;

	int text_x, text_y, rect_y, offset_x, offset_y;
	int text_height = fm.height();
	int text_width = fm.width(display_timecode);
	QColor background_color = color_bg_val->get_color_value(timecode);
	int alpha_val = bg_alpha->get_double_value(timecode)*2.55;
	background_color.setAlpha(alpha_val);

	offset_x = int(offset_x_val->get_double_value(timecode));
	offset_y = int(offset_y_val->get_double_value(timecode));

	text_x = offset_x + (width/2) - (text_width/2);
	text_y = offset_y + height - height/10;
	rect_y = text_y + fm.descent()/2 - text_height;

	path.addText(text_x, text_y, font, display_timecode);

	p.setPen(Qt::NoPen);
	p.setBrush(background_color);
	p.drawRect(QRect(text_x-fm.descent()/2, rect_y, text_width+fm.descent(), text_height));
	p.setBrush(color_val->get_color_value(timecode));
	p.drawPath(path);
}