mautrix-telegram/pkg/gotd/tg/tl_draft_message_gen.go

// Code generated by gotdgen, DO NOT EDIT.

package tg

import (
	"context"
	"errors"
	"fmt"
	"sort"
	"strings"

	"go.uber.org/multierr"

	"go.mau.fi/mautrix-telegram/pkg/gotd/bin"
	"go.mau.fi/mautrix-telegram/pkg/gotd/tdjson"
	"go.mau.fi/mautrix-telegram/pkg/gotd/tdp"
	"go.mau.fi/mautrix-telegram/pkg/gotd/tgerr"
)

// No-op definition for keeping imports.
var (
	_ = bin.Buffer{}
	_ = context.Background()
	_ = fmt.Stringer(nil)
	_ = strings.Builder{}
	_ = errors.Is
	_ = multierr.AppendInto
	_ = sort.Ints
	_ = tdp.Format
	_ = tgerr.Error{}
	_ = tdjson.Encoder{}
)

// DraftMessageEmpty represents TL type `draftMessageEmpty#1b0c841a`.
// Empty draft
//
// See https://core.telegram.org/constructor/draftMessageEmpty for reference.
type DraftMessageEmpty struct {
	// Flags, see TL conditional fields¹
	//
	// Links:
	//  1) https://core.telegram.org/mtproto/TL-combinators#conditional-fields
	Flags bin.Fields
	// When was the draft last updated
	//
	// Use SetDate and GetDate helpers.
	Date int
}

// DraftMessageEmptyTypeID is TL type id of DraftMessageEmpty.
const DraftMessageEmptyTypeID = 0x1b0c841a

// construct implements constructor of DraftMessageClass.
func (d DraftMessageEmpty) construct() DraftMessageClass { return &d }

// Ensuring interfaces in compile-time for DraftMessageEmpty.
var (
	_ bin.Encoder     = &DraftMessageEmpty{}
	_ bin.Decoder     = &DraftMessageEmpty{}
	_ bin.BareEncoder = &DraftMessageEmpty{}
	_ bin.BareDecoder = &DraftMessageEmpty{}

	_ DraftMessageClass = &DraftMessageEmpty{}
)

func (d *DraftMessageEmpty) Zero() bool {
	if d == nil {
		return true
	}
	if !(d.Flags.Zero()) {
		return false
	}
	if !(d.Date == 0) {
		return false
	}

	return true
}

// String implements fmt.Stringer.
func (d *DraftMessageEmpty) String() string {
	if d == nil {
		return "DraftMessageEmpty(nil)"
	}
	type Alias DraftMessageEmpty
	return fmt.Sprintf("DraftMessageEmpty%+v", Alias(*d))
}

// FillFrom fills DraftMessageEmpty from given interface.
func (d *DraftMessageEmpty) FillFrom(from interface {
	GetDate() (value int, ok bool)
}) {
	if val, ok := from.GetDate(); ok {
		d.Date = val
	}

}

// TypeID returns type id in TL schema.
//
// See https://core.telegram.org/mtproto/TL-tl#remarks.
func (*DraftMessageEmpty) TypeID() uint32 {
	return DraftMessageEmptyTypeID
}

// TypeName returns name of type in TL schema.
func (*DraftMessageEmpty) TypeName() string {
	return "draftMessageEmpty"
}

// TypeInfo returns info about TL type.
func (d *DraftMessageEmpty) TypeInfo() tdp.Type {
	typ := tdp.Type{
		Name: "draftMessageEmpty",
		ID:   DraftMessageEmptyTypeID,
	}
	if d == nil {
		typ.Null = true
		return typ
	}
	typ.Fields = []tdp.Field{
		{
			Name:       "Date",
			SchemaName: "date",
			Null:       !d.Flags.Has(0),
		},
	}
	return typ
}

// SetFlags sets flags for non-zero fields.
func (d *DraftMessageEmpty) SetFlags() {
	if !(d.Date == 0) {
		d.Flags.Set(0)
	}
}

// Encode implements bin.Encoder.
func (d *DraftMessageEmpty) Encode(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't encode draftMessageEmpty#1b0c841a as nil")
	}
	b.PutID(DraftMessageEmptyTypeID)
	return d.EncodeBare(b)
}

// EncodeBare implements bin.BareEncoder.
func (d *DraftMessageEmpty) EncodeBare(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't encode draftMessageEmpty#1b0c841a as nil")
	}
	d.SetFlags()
	if err := d.Flags.Encode(b); err != nil {
		return fmt.Errorf("unable to encode draftMessageEmpty#1b0c841a: field flags: %w", err)
	}
	if d.Flags.Has(0) {
		b.PutInt(d.Date)
	}
	return nil
}

// Decode implements bin.Decoder.
func (d *DraftMessageEmpty) Decode(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't decode draftMessageEmpty#1b0c841a to nil")
	}
	if err := b.ConsumeID(DraftMessageEmptyTypeID); err != nil {
		return fmt.Errorf("unable to decode draftMessageEmpty#1b0c841a: %w", err)
	}
	return d.DecodeBare(b)
}

// DecodeBare implements bin.BareDecoder.
func (d *DraftMessageEmpty) DecodeBare(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't decode draftMessageEmpty#1b0c841a to nil")
	}
	{
		if err := d.Flags.Decode(b); err != nil {
			return fmt.Errorf("unable to decode draftMessageEmpty#1b0c841a: field flags: %w", err)
		}
	}
	if d.Flags.Has(0) {
		value, err := b.Int()
		if err != nil {
			return fmt.Errorf("unable to decode draftMessageEmpty#1b0c841a: field date: %w", err)
		}
		d.Date = value
	}
	return nil
}

// SetDate sets value of Date conditional field.
func (d *DraftMessageEmpty) SetDate(value int) {
	d.Flags.Set(0)
	d.Date = value
}

// GetDate returns value of Date conditional field and
// boolean which is true if field was set.
func (d *DraftMessageEmpty) GetDate() (value int, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(0) {
		return value, false
	}
	return d.Date, true
}

// DraftMessage represents TL type `draftMessage#96eaa5eb`.
// Represents a message draft¹.
//
// Links:
//  1. https://core.telegram.org/api/drafts
//
// See https://core.telegram.org/constructor/draftMessage for reference.
type DraftMessage struct {
	// Flags, see TL conditional fields¹
	//
	// Links:
	//  1) https://core.telegram.org/mtproto/TL-combinators#conditional-fields
	Flags bin.Fields
	// Whether no webpage preview will be generated
	NoWebpage bool
	// If set, any eventual webpage preview will be shown on top of the message instead of at
	// the bottom.
	InvertMedia bool
	// If set, indicates that the message should be sent in reply to the specified message or
	// story.
	//
	// Use SetReplyTo and GetReplyTo helpers.
	ReplyTo InputReplyToClass
	// The draft
	Message string
	// Message entities¹ for styled text.
	//
	// Links:
	//  1) https://core.telegram.org/api/entities
	//
	// Use SetEntities and GetEntities helpers.
	Entities []MessageEntityClass
	// Media.
	//
	// Use SetMedia and GetMedia helpers.
	Media InputMediaClass
	// Date of last update of the draft.
	Date int
	// A message effect that should be played as specified here »¹.
	//
	// Links:
	//  1) https://core.telegram.org/api/effects
	//
	// Use SetEffect and GetEffect helpers.
	Effect int64
	// Used to suggest a post to a channel, see here »¹ for more info on the full flow.
	//
	// Links:
	//  1) https://core.telegram.org/api/suggested-posts
	//
	// Use SetSuggestedPost and GetSuggestedPost helpers.
	SuggestedPost SuggestedPost
}

// DraftMessageTypeID is TL type id of DraftMessage.
const DraftMessageTypeID = 0x96eaa5eb

// construct implements constructor of DraftMessageClass.
func (d DraftMessage) construct() DraftMessageClass { return &d }

// Ensuring interfaces in compile-time for DraftMessage.
var (
	_ bin.Encoder     = &DraftMessage{}
	_ bin.Decoder     = &DraftMessage{}
	_ bin.BareEncoder = &DraftMessage{}
	_ bin.BareDecoder = &DraftMessage{}

	_ DraftMessageClass = &DraftMessage{}
)

func (d *DraftMessage) Zero() bool {
	if d == nil {
		return true
	}
	if !(d.Flags.Zero()) {
		return false
	}
	if !(d.NoWebpage == false) {
		return false
	}
	if !(d.InvertMedia == false) {
		return false
	}
	if !(d.ReplyTo == nil) {
		return false
	}
	if !(d.Message == "") {
		return false
	}
	if !(d.Entities == nil) {
		return false
	}
	if !(d.Media == nil) {
		return false
	}
	if !(d.Date == 0) {
		return false
	}
	if !(d.Effect == 0) {
		return false
	}
	if !(d.SuggestedPost.Zero()) {
		return false
	}

	return true
}

// String implements fmt.Stringer.
func (d *DraftMessage) String() string {
	if d == nil {
		return "DraftMessage(nil)"
	}
	type Alias DraftMessage
	return fmt.Sprintf("DraftMessage%+v", Alias(*d))
}

// FillFrom fills DraftMessage from given interface.
func (d *DraftMessage) FillFrom(from interface {
	GetNoWebpage() (value bool)
	GetInvertMedia() (value bool)
	GetReplyTo() (value InputReplyToClass, ok bool)
	GetMessage() (value string)
	GetEntities() (value []MessageEntityClass, ok bool)
	GetMedia() (value InputMediaClass, ok bool)
	GetDate() (value int)
	GetEffect() (value int64, ok bool)
	GetSuggestedPost() (value SuggestedPost, ok bool)
}) {
	d.NoWebpage = from.GetNoWebpage()
	d.InvertMedia = from.GetInvertMedia()
	if val, ok := from.GetReplyTo(); ok {
		d.ReplyTo = val
	}

	d.Message = from.GetMessage()
	if val, ok := from.GetEntities(); ok {
		d.Entities = val
	}

	if val, ok := from.GetMedia(); ok {
		d.Media = val
	}

	d.Date = from.GetDate()
	if val, ok := from.GetEffect(); ok {
		d.Effect = val
	}

	if val, ok := from.GetSuggestedPost(); ok {
		d.SuggestedPost = val
	}

}

// TypeID returns type id in TL schema.
//
// See https://core.telegram.org/mtproto/TL-tl#remarks.
func (*DraftMessage) TypeID() uint32 {
	return DraftMessageTypeID
}

// TypeName returns name of type in TL schema.
func (*DraftMessage) TypeName() string {
	return "draftMessage"
}

// TypeInfo returns info about TL type.
func (d *DraftMessage) TypeInfo() tdp.Type {
	typ := tdp.Type{
		Name: "draftMessage",
		ID:   DraftMessageTypeID,
	}
	if d == nil {
		typ.Null = true
		return typ
	}
	typ.Fields = []tdp.Field{
		{
			Name:       "NoWebpage",
			SchemaName: "no_webpage",
			Null:       !d.Flags.Has(1),
		},
		{
			Name:       "InvertMedia",
			SchemaName: "invert_media",
			Null:       !d.Flags.Has(6),
		},
		{
			Name:       "ReplyTo",
			SchemaName: "reply_to",
			Null:       !d.Flags.Has(4),
		},
		{
			Name:       "Message",
			SchemaName: "message",
		},
		{
			Name:       "Entities",
			SchemaName: "entities",
			Null:       !d.Flags.Has(3),
		},
		{
			Name:       "Media",
			SchemaName: "media",
			Null:       !d.Flags.Has(5),
		},
		{
			Name:       "Date",
			SchemaName: "date",
		},
		{
			Name:       "Effect",
			SchemaName: "effect",
			Null:       !d.Flags.Has(7),
		},
		{
			Name:       "SuggestedPost",
			SchemaName: "suggested_post",
			Null:       !d.Flags.Has(8),
		},
	}
	return typ
}

// SetFlags sets flags for non-zero fields.
func (d *DraftMessage) SetFlags() {
	if !(d.NoWebpage == false) {
		d.Flags.Set(1)
	}
	if !(d.InvertMedia == false) {
		d.Flags.Set(6)
	}
	if !(d.ReplyTo == nil) {
		d.Flags.Set(4)
	}
	if !(d.Entities == nil) {
		d.Flags.Set(3)
	}
	if !(d.Media == nil) {
		d.Flags.Set(5)
	}
	if !(d.Effect == 0) {
		d.Flags.Set(7)
	}
	if !(d.SuggestedPost.Zero()) {
		d.Flags.Set(8)
	}
}

// Encode implements bin.Encoder.
func (d *DraftMessage) Encode(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't encode draftMessage#96eaa5eb as nil")
	}
	b.PutID(DraftMessageTypeID)
	return d.EncodeBare(b)
}

// EncodeBare implements bin.BareEncoder.
func (d *DraftMessage) EncodeBare(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't encode draftMessage#96eaa5eb as nil")
	}
	d.SetFlags()
	if err := d.Flags.Encode(b); err != nil {
		return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field flags: %w", err)
	}
	if d.Flags.Has(4) {
		if d.ReplyTo == nil {
			return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field reply_to is nil")
		}
		if err := d.ReplyTo.Encode(b); err != nil {
			return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field reply_to: %w", err)
		}
	}
	b.PutString(d.Message)
	if d.Flags.Has(3) {
		b.PutVectorHeader(len(d.Entities))
		for idx, v := range d.Entities {
			if v == nil {
				return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field entities element with index %d is nil", idx)
			}
			if err := v.Encode(b); err != nil {
				return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field entities element with index %d: %w", idx, err)
			}
		}
	}
	if d.Flags.Has(5) {
		if d.Media == nil {
			return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field media is nil")
		}
		if err := d.Media.Encode(b); err != nil {
			return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field media: %w", err)
		}
	}
	b.PutInt(d.Date)
	if d.Flags.Has(7) {
		b.PutLong(d.Effect)
	}
	if d.Flags.Has(8) {
		if err := d.SuggestedPost.Encode(b); err != nil {
			return fmt.Errorf("unable to encode draftMessage#96eaa5eb: field suggested_post: %w", err)
		}
	}
	return nil
}

// Decode implements bin.Decoder.
func (d *DraftMessage) Decode(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't decode draftMessage#96eaa5eb to nil")
	}
	if err := b.ConsumeID(DraftMessageTypeID); err != nil {
		return fmt.Errorf("unable to decode draftMessage#96eaa5eb: %w", err)
	}
	return d.DecodeBare(b)
}

// DecodeBare implements bin.BareDecoder.
func (d *DraftMessage) DecodeBare(b *bin.Buffer) error {
	if d == nil {
		return fmt.Errorf("can't decode draftMessage#96eaa5eb to nil")
	}
	{
		if err := d.Flags.Decode(b); err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field flags: %w", err)
		}
	}
	d.NoWebpage = d.Flags.Has(1)
	d.InvertMedia = d.Flags.Has(6)
	if d.Flags.Has(4) {
		value, err := DecodeInputReplyTo(b)
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field reply_to: %w", err)
		}
		d.ReplyTo = value
	}
	{
		value, err := b.String()
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field message: %w", err)
		}
		d.Message = value
	}
	if d.Flags.Has(3) {
		headerLen, err := b.VectorHeader()
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field entities: %w", err)
		}

		if headerLen > 0 {
			d.Entities = make([]MessageEntityClass, 0, headerLen%bin.PreallocateLimit)
		}
		for idx := 0; idx < headerLen; idx++ {
			value, err := DecodeMessageEntity(b)
			if err != nil {
				return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field entities: %w", err)
			}
			d.Entities = append(d.Entities, value)
		}
	}
	if d.Flags.Has(5) {
		value, err := DecodeInputMedia(b)
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field media: %w", err)
		}
		d.Media = value
	}
	{
		value, err := b.Int()
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field date: %w", err)
		}
		d.Date = value
	}
	if d.Flags.Has(7) {
		value, err := b.Long()
		if err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field effect: %w", err)
		}
		d.Effect = value
	}
	if d.Flags.Has(8) {
		if err := d.SuggestedPost.Decode(b); err != nil {
			return fmt.Errorf("unable to decode draftMessage#96eaa5eb: field suggested_post: %w", err)
		}
	}
	return nil
}

// SetNoWebpage sets value of NoWebpage conditional field.
func (d *DraftMessage) SetNoWebpage(value bool) {
	if value {
		d.Flags.Set(1)
		d.NoWebpage = true
	} else {
		d.Flags.Unset(1)
		d.NoWebpage = false
	}
}

// GetNoWebpage returns value of NoWebpage conditional field.
func (d *DraftMessage) GetNoWebpage() (value bool) {
	if d == nil {
		return
	}
	return d.Flags.Has(1)
}

// SetInvertMedia sets value of InvertMedia conditional field.
func (d *DraftMessage) SetInvertMedia(value bool) {
	if value {
		d.Flags.Set(6)
		d.InvertMedia = true
	} else {
		d.Flags.Unset(6)
		d.InvertMedia = false
	}
}

// GetInvertMedia returns value of InvertMedia conditional field.
func (d *DraftMessage) GetInvertMedia() (value bool) {
	if d == nil {
		return
	}
	return d.Flags.Has(6)
}

// SetReplyTo sets value of ReplyTo conditional field.
func (d *DraftMessage) SetReplyTo(value InputReplyToClass) {
	d.Flags.Set(4)
	d.ReplyTo = value
}

// GetReplyTo returns value of ReplyTo conditional field and
// boolean which is true if field was set.
func (d *DraftMessage) GetReplyTo() (value InputReplyToClass, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(4) {
		return value, false
	}
	return d.ReplyTo, true
}

// GetMessage returns value of Message field.
func (d *DraftMessage) GetMessage() (value string) {
	if d == nil {
		return
	}
	return d.Message
}

// SetEntities sets value of Entities conditional field.
func (d *DraftMessage) SetEntities(value []MessageEntityClass) {
	d.Flags.Set(3)
	d.Entities = value
}

// GetEntities returns value of Entities conditional field and
// boolean which is true if field was set.
func (d *DraftMessage) GetEntities() (value []MessageEntityClass, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(3) {
		return value, false
	}
	return d.Entities, true
}

// SetMedia sets value of Media conditional field.
func (d *DraftMessage) SetMedia(value InputMediaClass) {
	d.Flags.Set(5)
	d.Media = value
}

// GetMedia returns value of Media conditional field and
// boolean which is true if field was set.
func (d *DraftMessage) GetMedia() (value InputMediaClass, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(5) {
		return value, false
	}
	return d.Media, true
}

// GetDate returns value of Date field.
func (d *DraftMessage) GetDate() (value int) {
	if d == nil {
		return
	}
	return d.Date
}

// SetEffect sets value of Effect conditional field.
func (d *DraftMessage) SetEffect(value int64) {
	d.Flags.Set(7)
	d.Effect = value
}

// GetEffect returns value of Effect conditional field and
// boolean which is true if field was set.
func (d *DraftMessage) GetEffect() (value int64, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(7) {
		return value, false
	}
	return d.Effect, true
}

// SetSuggestedPost sets value of SuggestedPost conditional field.
func (d *DraftMessage) SetSuggestedPost(value SuggestedPost) {
	d.Flags.Set(8)
	d.SuggestedPost = value
}

// GetSuggestedPost returns value of SuggestedPost conditional field and
// boolean which is true if field was set.
func (d *DraftMessage) GetSuggestedPost() (value SuggestedPost, ok bool) {
	if d == nil {
		return
	}
	if !d.Flags.Has(8) {
		return value, false
	}
	return d.SuggestedPost, true
}

// MapEntities returns field Entities wrapped in MessageEntityClassArray helper.
func (d *DraftMessage) MapEntities() (value MessageEntityClassArray, ok bool) {
	if !d.Flags.Has(3) {
		return value, false
	}
	return MessageEntityClassArray(d.Entities), true
}

// DraftMessageClassName is schema name of DraftMessageClass.
const DraftMessageClassName = "DraftMessage"

// DraftMessageClass represents DraftMessage generic type.
//
// See https://core.telegram.org/type/DraftMessage for reference.
//
// Example:
//
//	g, err := tg.DecodeDraftMessage(buf)
//	if err != nil {
//	    panic(err)
//	}
//	switch v := g.(type) {
//	case *tg.DraftMessageEmpty: // draftMessageEmpty#1b0c841a
//	case *tg.DraftMessage: // draftMessage#96eaa5eb
//	default: panic(v)
//	}
type DraftMessageClass interface {
	bin.Encoder
	bin.Decoder
	bin.BareEncoder
	bin.BareDecoder
	construct() DraftMessageClass

	// TypeID returns type id in TL schema.
	//
	// See https://core.telegram.org/mtproto/TL-tl#remarks.
	TypeID() uint32
	// TypeName returns name of type in TL schema.
	TypeName() string
	// String implements fmt.Stringer.
	String() string
	// Zero returns true if current object has a zero value.
	Zero() bool

	// AsNotEmpty tries to map DraftMessageClass to DraftMessage.
	AsNotEmpty() (*DraftMessage, bool)
}

// AsNotEmpty tries to map DraftMessageEmpty to DraftMessage.
func (d *DraftMessageEmpty) AsNotEmpty() (*DraftMessage, bool) {
	return nil, false
}

// AsNotEmpty tries to map DraftMessage to DraftMessage.
func (d *DraftMessage) AsNotEmpty() (*DraftMessage, bool) {
	return d, true
}

// DecodeDraftMessage implements binary de-serialization for DraftMessageClass.
func DecodeDraftMessage(buf *bin.Buffer) (DraftMessageClass, error) {
	id, err := buf.PeekID()
	if err != nil {
		return nil, err
	}
	switch id {
	case DraftMessageEmptyTypeID:
		// Decoding draftMessageEmpty#1b0c841a.
		v := DraftMessageEmpty{}
		if err := v.Decode(buf); err != nil {
			return nil, fmt.Errorf("unable to decode DraftMessageClass: %w", err)
		}
		return &v, nil
	case DraftMessageTypeID:
		// Decoding draftMessage#96eaa5eb.
		v := DraftMessage{}
		if err := v.Decode(buf); err != nil {
			return nil, fmt.Errorf("unable to decode DraftMessageClass: %w", err)
		}
		return &v, nil
	default:
		return nil, fmt.Errorf("unable to decode DraftMessageClass: %w", bin.NewUnexpectedID(id))
	}
}

// DraftMessage boxes the DraftMessageClass providing a helper.
type DraftMessageBox struct {
	DraftMessage DraftMessageClass
}

// Decode implements bin.Decoder for DraftMessageBox.
func (b *DraftMessageBox) Decode(buf *bin.Buffer) error {
	if b == nil {
		return fmt.Errorf("unable to decode DraftMessageBox to nil")
	}
	v, err := DecodeDraftMessage(buf)
	if err != nil {
		return fmt.Errorf("unable to decode boxed value: %w", err)
	}
	b.DraftMessage = v
	return nil
}

// Encode implements bin.Encode for DraftMessageBox.
func (b *DraftMessageBox) Encode(buf *bin.Buffer) error {
	if b == nil || b.DraftMessage == nil {
		return fmt.Errorf("unable to encode DraftMessageClass as nil")
	}
	return b.DraftMessage.Encode(buf)
}