package dml

import (
	"encoding/xml"

	"go.devnw.com/ooxml"
)

type EG_TextRun struct {
	R   *CT_RegularTextRun
	Br  *CT_TextLineBreak
	Fld *CT_TextField
}

func NewEG_TextRun() *EG_TextRun {
	ret := &EG_TextRun{}
	return ret
}

func (m *EG_TextRun) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	if m.R != nil {
		ser := xml.StartElement{Name: xml.Name{Local: "a:r"}}
		e.EncodeElement(m.R, ser)
	}
	if m.Br != nil {
		sebr := xml.StartElement{Name: xml.Name{Local: "a:br"}}
		e.EncodeElement(m.Br, sebr)
	}
	if m.Fld != nil {
		sefld := xml.StartElement{Name: xml.Name{Local: "a:fld"}}
		e.EncodeElement(m.Fld, sefld)
	}
	return nil
}

func (m *EG_TextRun) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// initialize to default
lEG_TextRun:
	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/drawingml/2006/main", Local: "r"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/main", Local: "r"}:
				m.R = NewCT_RegularTextRun()
				if err := d.DecodeElement(m.R, &el); err != nil {
					return err
				}
			case xml.Name{Space: "http://schemas.openxmlformats.org/drawingml/2006/main", Local: "br"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/main", Local: "br"}:
				m.Br = NewCT_TextLineBreak()
				if err := d.DecodeElement(m.Br, &el); err != nil {
					return err
				}
			case xml.Name{Space: "http://schemas.openxmlformats.org/drawingml/2006/main", Local: "fld"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/main", Local: "fld"}:
				m.Fld = NewCT_TextField()
				if err := d.DecodeElement(m.Fld, &el); err != nil {
					return err
				}
			default:
				office.Log("skipping unsupported element on EG_TextRun %v", el.Name)
				if err := d.Skip(); err != nil {
					return err
				}
			}
		case xml.EndElement:
			break lEG_TextRun
		case xml.CharData:
		}
	}
	return nil
}

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

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