package shape

import (
	"oss.terrastruct.com/d2/lib/geo"
	"oss.terrastruct.com/d2/lib/svg"
)

type shapeDiamond struct {
	*baseShape
}

func NewDiamond(box *geo.Box) Shape {
	return shapeDiamond{
		baseShape: &baseShape{
			Type: DIAMOND_TYPE,
			Box:  box,
		},
	}
}

func diamondPath(box *geo.Box) *svg.SvgPathContext {
	pc := svg.NewSVGPathContext(box.TopLeft, box.Width/77, box.Height/76.9)
	pc.StartAt(pc.Absolute(38.5, 76.9))
	pc.C(true, -0.3, 0, -0.5, -0.1, -0.7, -0.3)
	pc.L(false, 0.3, 39.2)
	pc.C(true, -0.4, -0.4, -0.4, -1, 0, -1.4)
	pc.L(false, 37.8, 0.3)
	pc.C(true, 0.4, -0.4, 1, -0.4, 1.4, 0)
	pc.L(true, 37.5, 37.5)
	pc.C(true, 0.4, 0.4, 0.4, 1, 0, 1.4)
	pc.L(false, 39.2, 76.6)
	pc.C(false, 39, 76.8, 38.8, 76.9, 38.5, 76.9)
	pc.Z()
	return pc
}

func (s shapeDiamond) Perimeter() []geo.Intersectable {
	return diamondPath(s.Box).Path
}

func (s shapeDiamond) GetSVGPathData() []string {
	return []string{
		diamondPath(s.Box).PathData(),
	}
}