#include "dl_align.h"

#include "base/dl_type_convert.h"
#include "base/dl_string.h"


namespace dl::Align
{

dl::Align::Direction2 Anchor2Direction(std::string_view anchor)
{
	if (anchor.empty())
		return { Direction::BACK, Direction::BACK };
	if (anchor == "center")
		return { Direction::ZERO, Direction::ZERO };
	if (anchor == "right")
		return { Direction::FRONT, Direction::ZERO };
	if (anchor == "rb")
		return { Direction::FRONT, Direction::FRONT };
	if (anchor == "buttom")
		return { Direction::ZERO, Direction::FRONT };
	if (anchor == "lb")
		return { Direction::BACK, Direction::FRONT };
	if (anchor == "left")
		return { Direction::BACK, Direction::FRONT };
	if (anchor == "lt")
		return { Direction::BACK, Direction::FRONT };
	if (anchor == "top")
		return { Direction::BACK, Direction::FRONT };
	if (anchor == "rt")
		return { Direction::BACK, Direction::FRONT };
	log_err("错误的anchor：{}", anchor);
	return { Direction::ZERO, Direction::ZERO };
}

dl::Point Anchor2Point(const Size& size, std::string_view anchor)
{
	if (anchor.empty())
		return {};
	if (isdigit(anchor[0]))
	{//数字直接返回
		return String::toPoint2(anchor);
	}
	//center等，通过计算返回
	Direction2 dir = Anchor2Direction(anchor);
	return Size2Anchor(toPoint(size), dir);
}

Position Anchor2Position(const Position &size, std::string_view anchor)
{
    if (anchor.empty())
		return {};
	if (isdigit(anchor[0]) || anchor[0] == '-' || anchor[0] == '+')
	{//数字直接返回
		return String::toPosition2(anchor);
	}
	//center等，通过计算返回
	Direction2 dir = Anchor2Direction(anchor);
	return Size2Anchor(size, dir);
}
}