package dml

import (
	"encoding/xml"
	"fmt"

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

type CT_TableStyleList struct {
	DefAttr  string
	TblStyle []*CT_TableStyle
}

func NewCT_TableStyleList() *CT_TableStyleList {
	ret := &CT_TableStyleList{}
	ret.DefAttr = "{00000000-0000-0000-0000-000000000000}"
	return ret
}

func (m *CT_TableStyleList) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "def"},
		Value: fmt.Sprintf("%v", m.DefAttr)})
	e.EncodeToken(start)
	if m.TblStyle != nil {
		setblStyle := xml.StartElement{Name: xml.Name{Local: "a:tblStyle"}}
		for _, c := range m.TblStyle {
			e.EncodeElement(c, setblStyle)
		}
	}
	e.EncodeToken(xml.EndElement{Name: start.Name})
	return nil
}

func (m *CT_TableStyleList) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// initialize to default
	m.DefAttr = "{00000000-0000-0000-0000-000000000000}"
	for _, attr := range start.Attr {
		if attr.Name.Local == "def" {
			parsed, err := attr.Value, error(nil)
			if err != nil {
				return err
			}
			m.DefAttr = parsed
			continue
		}
	}
lCT_TableStyleList:
	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: "tblStyle"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/main", Local: "tblStyle"}:
				tmp := NewCT_TableStyle()
				if err := d.DecodeElement(tmp, &el); err != nil {
					return err
				}
				m.TblStyle = append(m.TblStyle, tmp)
			default:
				office.Log("skipping unsupported element on CT_TableStyleList %v", el.Name)
				if err := d.Skip(); err != nil {
					return err
				}
			}
		case xml.EndElement:
			break lCT_TableStyleList
		case xml.CharData:
		}
	}
	return nil
}

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

// ValidateWithPath validates the CT_TableStyleList and its children, prefixing error messages with path
func (m *CT_TableStyleList) ValidateWithPath(path string) error {
	if !sharedTypes.ST_GuidPatternRe.MatchString(m.DefAttr) {
		return fmt.Errorf(`%s/m.DefAttr must match '%s' (have %v)`, path, sharedTypes.ST_GuidPatternRe, m.DefAttr)
	}
	for i, v := range m.TblStyle {
		if err := v.ValidateWithPath(fmt.Sprintf("%s/TblStyle[%d]", path, i)); err != nil {
			return err
		}
	}
	return nil
}
