#include "paint_canvas.h"

#include "core/io/image.h"
#include "scene/resources/texture.h"

bool PaintCanvas::get_symmetry_x() const {
	return _symmetry_x;
}
void PaintCanvas::set_symmetry_x(const bool val) {
	_symmetry_x = val;
}

bool PaintCanvas::get_symmetry_y() const {
	return _symmetry_y;
}
void PaintCanvas::set_symmetry_y(const bool val) {
	_symmetry_y = val;
}

bool PaintCanvas::get_alpha_locked() const {
	return _alpha_locked;
}
void PaintCanvas::set_alpha_locked(const bool val) {
	_alpha_locked = val;
}

bool PaintCanvas::validate_pixel_v(const Vector2i &pos) const {
	if (pos.x < 0 || pos.y < 0 || pos.x >= _image->get_width() || pos.y >= _image->get_height()) {
		return false;
	}

	return true;
}

bool PaintCanvas::is_inside_canvas(const int x, const int y) {
	if (x < 0 || y < 0) {
		return false;
	}
	if (x >= get_size().x || y >= get_size().y) {
		return false;
	}

	return true;
}

void PaintCanvas::set_pixel_arr(const PoolVector2iArray &pixels, const Color &color) {
	PoolVector2iArray::Read r = pixels.read();

	for (int i = 0; i < pixels.size(); ++i) {
		const Vector2i &pixel = r[i];

		set_pixel(pixel.x, pixel.y, color);
	}
}
void PaintCanvas::set_pixel_v(const Vector2i &pos, const Color &color) {
	set_pixel(pos.x, pos.y, color);
}
void PaintCanvas::set_pixel(const int x, const int y, const Color &color) {
	if (x < 0 || y < 0 || x >= _image->get_width() || y >= _image->get_height()) {
		return;
	}

	_image->lock();
	_image->set_pixel(x, y, color);
	_image->unlock();
}

Color PaintCanvas::get_pixel_v(const Vector2i &pos) {
	return get_pixel(pos.x, pos.y);
}
Color PaintCanvas::get_pixel(const int x, const int y) {
	if (x < 0 || y < 0 || x >= _image->get_width() || y >= _image->get_height()) {
		return Color();
	}

	_image->lock();
	Color pixel = _image->get_pixel(x, y);
	_image->unlock();

	return pixel;
}
void PaintCanvas::set_preview_pixel_v(const Vector2i &pos, const Color &color) {
	set_preview_pixel(pos.x, pos.y, color);
}

void PaintCanvas::set_preview_pixel(const int x, const int y, const Color &color) {
	if (x < 0 || y < 0 || x >= _preview_image->get_width() || y >= _preview_image->get_height()) {
		return;
	}

	_preview_image->lock();
	_preview_image->set_pixel(x, y, color);
	_preview_image->unlock();
}
Color PaintCanvas::get_preview_pixel_v(const Vector2i &pos) {
	return get_preview_pixel(pos.x, pos.y);
}

Color PaintCanvas::get_preview_pixel(const int x, const int y) {
	if (x < 0 || y < 0 || x >= _preview_image->get_width() || y >= _preview_image->get_height()) {
		return Color();
	}

	_preview_image->lock();
	Color pixel = _preview_image->get_pixel(x, y);
	_preview_image->unlock();

	return pixel;
}

void PaintCanvas::clear() {
	_image->fill(Color(1.00, 1.00, 1.00, 0.00));

	update_textures();
}

void PaintCanvas::update_textures() {
	_image_texture->create_from_image(_image, 0);
	_preview_image_texture->create_from_image(_preview_image, 0);

	update();
}

PaintCanvas::PaintCanvas() {
	_symmetry_x = false;
	_symmetry_y = false;
	_alpha_locked = false;

	_image.instance();
	_preview_image.instance();

	_image_texture.instance();
	_preview_image_texture.instance();
}

PaintCanvas::~PaintCanvas() {
}

void PaintCanvas::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_DRAW: {
			draw_texture(_image_texture, Point2());
			draw_texture(_preview_image_texture, Point2());
		} break;
	}
}

void PaintCanvas::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_symmetry_x"), &PaintCanvas::get_symmetry_x);
	ClassDB::bind_method(D_METHOD("set_symmetry_x", "val"), &PaintCanvas::set_symmetry_x);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "symmetry_x"), "set_symmetry_x", "get_symmetry_x");

	ClassDB::bind_method(D_METHOD("get_symmetry_y"), &PaintCanvas::get_symmetry_y);
	ClassDB::bind_method(D_METHOD("set_symmetry_y", "val"), &PaintCanvas::set_symmetry_y);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "symmetry_y"), "set_symmetry_y", "get_symmetry_y");

	ClassDB::bind_method(D_METHOD("get_alpha_locked"), &PaintCanvas::get_alpha_locked);
	ClassDB::bind_method(D_METHOD("set_alpha_locked", "val"), &PaintCanvas::set_alpha_locked);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "alpha_locked"), "set_alpha_locked", "get_alpha_locked");

	ClassDB::bind_method(D_METHOD("is_inside_canvas", "x", "y"), &PaintCanvas::is_inside_canvas);
	ClassDB::bind_method(D_METHOD("set_pixel_arr", "pixels", "color"), &PaintCanvas::set_pixel_arr);

	ClassDB::bind_method(D_METHOD("set_pixel_v", "pos", "color"), &PaintCanvas::set_pixel_v);
	ClassDB::bind_method(D_METHOD("set_pixel", "x", "y", "color"), &PaintCanvas::set_pixel);

	ClassDB::bind_method(D_METHOD("get_pixel_v", "pos"), &PaintCanvas::get_pixel_v);
	ClassDB::bind_method(D_METHOD("get_pixel", "x", "y"), &PaintCanvas::get_pixel);

	ClassDB::bind_method(D_METHOD("set_preview_pixel_v", "pos", "color"), &PaintCanvas::set_preview_pixel_v);
	ClassDB::bind_method(D_METHOD("set_preview_pixel", "x", "y", "color"), &PaintCanvas::set_preview_pixel);

	ClassDB::bind_method(D_METHOD("get_preview_pixel_v", "pos"), &PaintCanvas::get_preview_pixel_v);
	ClassDB::bind_method(D_METHOD("get_preview_pixel", "x", "y"), &PaintCanvas::get_preview_pixel);

	ClassDB::bind_method(D_METHOD("validate_pixel_v", "pos"), &PaintCanvas::validate_pixel_v);

	ClassDB::bind_method(D_METHOD("clear"), &PaintCanvas::clear);
	ClassDB::bind_method(D_METHOD("update_textures"), &PaintCanvas::update_textures);
}