// Copyright 2017 Baliance. All rights reserved.
//
// Use of this source code is governed by the terms of the Affero GNU General
// Public License version 3.0 as published by the Free Software Foundation and
// appearing in the file LICENSE included in the packaging of this file. A
// commercial license can be purchased by contacting sales@baliance.com.

package drawingml

import (
	"encoding/xml"
	"fmt"
	"log"
)

type CT_Blip struct {
	CstateAttr ST_BlipCompression
	Choice     []*CT_BlipChoice
	ExtLst     *CT_OfficeArtExtensionList
	EmbedAttr  *string
	LinkAttr   *string
}

func NewCT_Blip() *CT_Blip {
	ret := &CT_Blip{}
	ret.CstateAttr = ST_BlipCompressionNone
	return ret
}

func (m *CT_Blip) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	if m.CstateAttr != ST_BlipCompressionUnset {
		attr, err := m.CstateAttr.MarshalXMLAttr(xml.Name{Local: "cstate"})
		if err != nil {
			return err
		}
		start.Attr = append(start.Attr, attr)
	}
	if m.EmbedAttr != nil {
		start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "r:embed"},
			Value: fmt.Sprintf("%v", *m.EmbedAttr)})
	}
	if m.LinkAttr != nil {
		start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "r:link"},
			Value: fmt.Sprintf("%v", *m.LinkAttr)})
	}
	e.EncodeToken(start)
	if m.Choice != nil {
		for _, c := range m.Choice {
			c.MarshalXML(e, xml.StartElement{})
		}
	}
	if m.ExtLst != nil {
		seextLst := xml.StartElement{Name: xml.Name{Local: "a:extLst"}}
		e.EncodeElement(m.ExtLst, seextLst)
	}
	e.EncodeToken(xml.EndElement{Name: start.Name})
	return nil
}

func (m *CT_Blip) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// initialize to default
	m.CstateAttr = ST_BlipCompressionNone
	for _, attr := range start.Attr {
		if attr.Name.Local == "cstate" {
			m.CstateAttr.UnmarshalXMLAttr(attr)
		}
		if attr.Name.Local == "embed" {
			parsed, err := attr.Value, error(nil)
			if err != nil {
				return err
			}
			m.EmbedAttr = &parsed
		}
		if attr.Name.Local == "link" {
			parsed, err := attr.Value, error(nil)
			if err != nil {
				return err
			}
			m.LinkAttr = &parsed
		}
	}
lCT_Blip:
	for {
		tok, err := d.Token()
		if err != nil {
			return err
		}
		switch el := tok.(type) {
		case xml.StartElement:
			switch el.Name.Local {
			case "alphaBiLevel":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaBiLevel, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaCeiling":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaCeiling, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaFloor":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaFloor, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaInv":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaInv, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaMod":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaMod, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaModFix":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaModFix, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "alphaRepl":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.AlphaRepl, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "biLevel":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.BiLevel, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "blur":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Blur, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "clrChange":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.ClrChange, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "clrRepl":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.ClrRepl, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "duotone":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Duotone, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "fillOverlay":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.FillOverlay, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "grayscl":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Grayscl, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "hsl":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Hsl, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "lum":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Lum, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "tint":
				tmp := NewCT_BlipChoice()
				if err := d.DecodeElement(&tmp.Tint, &el); err != nil {
					return err
				}
				m.Choice = append(m.Choice, tmp)
			case "extLst":
				m.ExtLst = NewCT_OfficeArtExtensionList()
				if err := d.DecodeElement(m.ExtLst, &el); err != nil {
					return err
				}
			default:
				log.Printf("skipping unsupported element on CT_Blip %v", el.Name)
				if err := d.Skip(); err != nil {
					return err
				}
			}
		case xml.EndElement:
			break lCT_Blip
		case xml.CharData:
		}
	}
	return nil
}

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

// ValidateWithPath validates the CT_Blip and its children, prefixing error messages with path
func (m *CT_Blip) ValidateWithPath(path string) error {
	if err := m.CstateAttr.ValidateWithPath(path + "/CstateAttr"); err != nil {
		return err
	}
	for i, v := range m.Choice {
		if err := v.ValidateWithPath(fmt.Sprintf("%s/Choice[%d]", path, i)); err != nil {
			return err
		}
	}
	if m.ExtLst != nil {
		if err := m.ExtLst.ValidateWithPath(path + "/ExtLst"); err != nil {
			return err
		}
	}
	return nil
}