package wml

import (
	"encoding/xml"

	"go.devnw.com/ooxml"
	"go.devnw.com/ooxml/schema/soo/ofc/math"
)

type EG_MathContent struct {
	OMathPara *math.OMathPara
	OMath     *math.OMath
}

func NewEG_MathContent() *EG_MathContent {
	ret := &EG_MathContent{}
	return ret
}

func (m *EG_MathContent) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	if m.OMathPara != nil {
		seoMathPara := xml.StartElement{Name: xml.Name{Local: "m:oMathPara"}}
		e.EncodeElement(m.OMathPara, seoMathPara)
	}
	if m.OMath != nil {
		seoMath := xml.StartElement{Name: xml.Name{Local: "m:oMath"}}
		e.EncodeElement(m.OMath, seoMath)
	}
	return nil
}

func (m *EG_MathContent) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// initialize to default
lEG_MathContent:
	for {
		tok, err := d.Token()
		if err != nil {
			return err
		}
		switch el := tok.(type) {
		case xml.StartElement:
			switch el.Name {
			case xml.Name{Space: "http://schemas.openxmlformats.org/officeDocument/2006/math", Local: "oMathPara"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/officeDocument/math", Local: "oMathPara"}:
				m.OMathPara = math.NewOMathPara()
				if err := d.DecodeElement(m.OMathPara, &el); err != nil {
					return err
				}
			case xml.Name{Space: "http://schemas.openxmlformats.org/officeDocument/2006/math", Local: "oMath"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/officeDocument/math", Local: "oMath"}:
				m.OMath = math.NewOMath()
				if err := d.DecodeElement(m.OMath, &el); err != nil {
					return err
				}
			default:
				office.Log("skipping unsupported element on EG_MathContent %v", el.Name)
				if err := d.Skip(); err != nil {
					return err
				}
			}
		case xml.EndElement:
			break lEG_MathContent
		case xml.CharData:
		}
	}
	return nil
}

// Validate validates the EG_MathContent and its children
func (m *EG_MathContent) Validate() error {
	return m.ValidateWithPath("EG_MathContent")
}

// ValidateWithPath validates the EG_MathContent and its children, prefixing error messages with path
func (m *EG_MathContent) ValidateWithPath(path string) error {
	if m.OMathPara != nil {
		if err := m.OMathPara.ValidateWithPath(path + "/OMathPara"); err != nil {
			return err
		}
	}
	if m.OMath != nil {
		if err := m.OMath.ValidateWithPath(path + "/OMath"); err != nil {
			return err
		}
	}
	return nil
}
