Update dependencies and remove old matterclient lib (#2067)HEADmaster

1 files changed, 0 insertions, 751 deletions

diff --git a/vendor/github.com/mattermost/mattermost-server/v5/model/post.go b/vendor/github.com/mattermost/mattermost-server/v5/model/post.go
deleted file mode 100644
index b7dff5bc..00000000
--- a/vendor/github.com/mattermost/mattermost-server/v5/model/post.go
+++ /dev/null
@@ -1,751 +0,0 @@
-// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-package model
-
-import (
-	"encoding/json"
-	"errors"
-	"io"
-	"net/http"
-	"regexp"
-	"sort"
-	"strings"
-	"sync"
-	"unicode/utf8"
-
-	"github.com/mattermost/mattermost-server/v5/shared/markdown"
-)
-
-const (
-	POST_SYSTEM_MESSAGE_PREFIX  = "system_"
-	POST_DEFAULT                = ""
-	POST_SLACK_ATTACHMENT       = "slack_attachment"
-	POST_SYSTEM_GENERIC         = "system_generic"
-	POST_JOIN_LEAVE             = "system_join_leave" // Deprecated, use POST_JOIN_CHANNEL or POST_LEAVE_CHANNEL instead
-	POST_JOIN_CHANNEL           = "system_join_channel"
-	POST_GUEST_JOIN_CHANNEL     = "system_guest_join_channel"
-	POST_LEAVE_CHANNEL          = "system_leave_channel"
-	POST_JOIN_TEAM              = "system_join_team"
-	POST_LEAVE_TEAM             = "system_leave_team"
-	POST_AUTO_RESPONDER         = "system_auto_responder"
-	POST_ADD_REMOVE             = "system_add_remove" // Deprecated, use POST_ADD_TO_CHANNEL or POST_REMOVE_FROM_CHANNEL instead
-	POST_ADD_TO_CHANNEL         = "system_add_to_channel"
-	POST_ADD_GUEST_TO_CHANNEL   = "system_add_guest_to_chan"
-	POST_REMOVE_FROM_CHANNEL    = "system_remove_from_channel"
-	POST_MOVE_CHANNEL           = "system_move_channel"
-	POST_ADD_TO_TEAM            = "system_add_to_team"
-	POST_REMOVE_FROM_TEAM       = "system_remove_from_team"
-	POST_HEADER_CHANGE          = "system_header_change"
-	POST_DISPLAYNAME_CHANGE     = "system_displayname_change"
-	POST_CONVERT_CHANNEL        = "system_convert_channel"
-	POST_PURPOSE_CHANGE         = "system_purpose_change"
-	POST_CHANNEL_DELETED        = "system_channel_deleted"
-	POST_CHANNEL_RESTORED       = "system_channel_restored"
-	POST_EPHEMERAL              = "system_ephemeral"
-	POST_CHANGE_CHANNEL_PRIVACY = "system_change_chan_privacy"
-	POST_ADD_BOT_TEAMS_CHANNELS = "add_bot_teams_channels"
-	POST_FILEIDS_MAX_RUNES      = 300
-	POST_FILENAMES_MAX_RUNES    = 4000
-	POST_HASHTAGS_MAX_RUNES     = 1000
-	POST_MESSAGE_MAX_RUNES_V1   = 4000
-	POST_MESSAGE_MAX_BYTES_V2   = 65535                         // Maximum size of a TEXT column in MySQL
-	POST_MESSAGE_MAX_RUNES_V2   = POST_MESSAGE_MAX_BYTES_V2 / 4 // Assume a worst-case representation
-	POST_PROPS_MAX_RUNES        = 8000
-	POST_PROPS_MAX_USER_RUNES   = POST_PROPS_MAX_RUNES - 400 // Leave some room for system / pre-save modifications
-	POST_CUSTOM_TYPE_PREFIX     = "custom_"
-	POST_ME                     = "me"
-	PROPS_ADD_CHANNEL_MEMBER    = "add_channel_member"
-
-	POST_PROPS_ADDED_USER_ID       = "addedUserId"
-	POST_PROPS_DELETE_BY           = "deleteBy"
-	POST_PROPS_OVERRIDE_ICON_URL   = "override_icon_url"
-	POST_PROPS_OVERRIDE_ICON_EMOJI = "override_icon_emoji"
-
-	POST_PROPS_MENTION_HIGHLIGHT_DISABLED = "mentionHighlightDisabled"
-	POST_PROPS_GROUP_HIGHLIGHT_DISABLED   = "disable_group_highlight"
-	POST_SYSTEM_WARN_METRIC_STATUS        = "warn_metric_status"
-)
-
-var AT_MENTION_PATTEN = regexp.MustCompile(`\B@`)
-
-type Post struct {
-	Id         string `json:"id"`
-	CreateAt   int64  `json:"create_at"`
-	UpdateAt   int64  `json:"update_at"`
-	EditAt     int64  `json:"edit_at"`
-	DeleteAt   int64  `json:"delete_at"`
-	IsPinned   bool   `json:"is_pinned"`
-	UserId     string `json:"user_id"`
-	ChannelId  string `json:"channel_id"`
-	RootId     string `json:"root_id"`
-	ParentId   string `json:"parent_id"`
-	OriginalId string `json:"original_id"`
-
-	Message string `json:"message"`
-	// MessageSource will contain the message as submitted by the user if Message has been modified
-	// by Mattermost for presentation (e.g if an image proxy is being used). It should be used to
-	// populate edit boxes if present.
-	MessageSource string `json:"message_source,omitempty" db:"-"`
-
-	Type          string          `json:"type"`
-	propsMu       sync.RWMutex    `db:"-"`       // Unexported mutex used to guard Post.Props.
-	Props         StringInterface `json:"props"` // Deprecated: use GetProps()
-	Hashtags      string          `json:"hashtags"`
-	Filenames     StringArray     `json:"filenames,omitempty"` // Deprecated, do not use this field any more
-	FileIds       StringArray     `json:"file_ids,omitempty"`
-	PendingPostId string          `json:"pending_post_id" db:"-"`
-	HasReactions  bool            `json:"has_reactions,omitempty"`
-	RemoteId      *string         `json:"remote_id,omitempty"`
-
-	// Transient data populated before sending a post to the client
-	ReplyCount   int64         `json:"reply_count" db:"-"`
-	LastReplyAt  int64         `json:"last_reply_at" db:"-"`
-	Participants []*User       `json:"participants" db:"-"`
-	IsFollowing  *bool         `json:"is_following,omitempty" db:"-"` // for root posts in collapsed thread mode indicates if the current user is following this thread
-	Metadata     *PostMetadata `json:"metadata,omitempty" db:"-"`
-}
-
-type PostEphemeral struct {
-	UserID string `json:"user_id"`
-	Post   *Post  `json:"post"`
-}
-
-type PostPatch struct {
-	IsPinned     *bool            `json:"is_pinned"`
-	Message      *string          `json:"message"`
-	Props        *StringInterface `json:"props"`
-	FileIds      *StringArray     `json:"file_ids"`
-	HasReactions *bool            `json:"has_reactions"`
-}
-
-type SearchParameter struct {
-	Terms                  *string `json:"terms"`
-	IsOrSearch             *bool   `json:"is_or_search"`
-	TimeZoneOffset         *int    `json:"time_zone_offset"`
-	Page                   *int    `json:"page"`
-	PerPage                *int    `json:"per_page"`
-	IncludeDeletedChannels *bool   `json:"include_deleted_channels"`
-}
-
-type AnalyticsPostCountsOptions struct {
-	TeamId        string
-	BotsOnly      bool
-	YesterdayOnly bool
-}
-
-func (o *PostPatch) WithRewrittenImageURLs(f func(string) string) *PostPatch {
-	copy := *o
-	if copy.Message != nil {
-		*copy.Message = RewriteImageURLs(*o.Message, f)
-	}
-	return &copy
-}
-
-type PostForExport struct {
-	Post
-	TeamName    string
-	ChannelName string
-	Username    string
-	ReplyCount  int
-}
-
-type DirectPostForExport struct {
-	Post
-	User           string
-	ChannelMembers *[]string
-}
-
-type ReplyForExport struct {
-	Post
-	Username string
-}
-
-type PostForIndexing struct {
-	Post
-	TeamId         string `json:"team_id"`
-	ParentCreateAt *int64 `json:"parent_create_at"`
-}
-
-type FileForIndexing struct {
-	FileInfo
-	ChannelId string `json:"channel_id"`
-	Content   string `json:"content"`
-}
-
-// ShallowCopy is an utility function to shallow copy a Post to the given
-// destination without touching the internal RWMutex.
-func (o *Post) ShallowCopy(dst *Post) error {
-	if dst == nil {
-		return errors.New("dst cannot be nil")
-	}
-	o.propsMu.RLock()
-	defer o.propsMu.RUnlock()
-	dst.propsMu.Lock()
-	defer dst.propsMu.Unlock()
-	dst.Id = o.Id
-	dst.CreateAt = o.CreateAt
-	dst.UpdateAt = o.UpdateAt
-	dst.EditAt = o.EditAt
-	dst.DeleteAt = o.DeleteAt
-	dst.IsPinned = o.IsPinned
-	dst.UserId = o.UserId
-	dst.ChannelId = o.ChannelId
-	dst.RootId = o.RootId
-	dst.ParentId = o.ParentId
-	dst.OriginalId = o.OriginalId
-	dst.Message = o.Message
-	dst.MessageSource = o.MessageSource
-	dst.Type = o.Type
-	dst.Props = o.Props
-	dst.Hashtags = o.Hashtags
-	dst.Filenames = o.Filenames
-	dst.FileIds = o.FileIds
-	dst.PendingPostId = o.PendingPostId
-	dst.HasReactions = o.HasReactions
-	dst.ReplyCount = o.ReplyCount
-	dst.Participants = o.Participants
-	dst.LastReplyAt = o.LastReplyAt
-	dst.Metadata = o.Metadata
-	if o.IsFollowing != nil {
-		dst.IsFollowing = NewBool(*o.IsFollowing)
-	}
-	dst.RemoteId = o.RemoteId
-	return nil
-}
-
-// Clone shallowly copies the post and returns the copy.
-func (o *Post) Clone() *Post {
-	copy := &Post{}
-	o.ShallowCopy(copy)
-	return copy
-}
-
-func (o *Post) ToJson() string {
-	copy := o.Clone()
-	copy.StripActionIntegrations()
-	b, _ := json.Marshal(copy)
-	return string(b)
-}
-
-func (o *Post) ToUnsanitizedJson() string {
-	b, _ := json.Marshal(o)
-	return string(b)
-}
-
-type GetPostsSinceOptions struct {
-	UserId                   string
-	ChannelId                string
-	Time                     int64
-	SkipFetchThreads         bool
-	CollapsedThreads         bool
-	CollapsedThreadsExtended bool
-	SortAscending            bool
-}
-
-type GetPostsSinceForSyncCursor struct {
-	LastPostUpdateAt int64
-	LastPostId       string
-}
-
-type GetPostsSinceForSyncOptions struct {
-	ChannelId       string
-	ExcludeRemoteId string
-	IncludeDeleted  bool
-}
-
-type GetPostsOptions struct {
-	UserId                   string
-	ChannelId                string
-	PostId                   string
-	Page                     int
-	PerPage                  int
-	SkipFetchThreads         bool
-	CollapsedThreads         bool
-	CollapsedThreadsExtended bool
-}
-
-func PostFromJson(data io.Reader) *Post {
-	var o *Post
-	json.NewDecoder(data).Decode(&o)
-	return o
-}
-
-func (o *Post) Etag() string {
-	return Etag(o.Id, o.UpdateAt)
-}
-
-func (o *Post) IsValid(maxPostSize int) *AppError {
-	if !IsValidId(o.Id) {
-		return NewAppError("Post.IsValid", "model.post.is_valid.id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if o.CreateAt == 0 {
-		return NewAppError("Post.IsValid", "model.post.is_valid.create_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	if o.UpdateAt == 0 {
-		return NewAppError("Post.IsValid", "model.post.is_valid.update_at.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	if !IsValidId(o.UserId) {
-		return NewAppError("Post.IsValid", "model.post.is_valid.user_id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if !IsValidId(o.ChannelId) {
-		return NewAppError("Post.IsValid", "model.post.is_valid.channel_id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if !(IsValidId(o.RootId) || o.RootId == "") {
-		return NewAppError("Post.IsValid", "model.post.is_valid.root_id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if !(IsValidId(o.ParentId) || o.ParentId == "") {
-		return NewAppError("Post.IsValid", "model.post.is_valid.parent_id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if len(o.ParentId) == 26 && o.RootId == "" {
-		return NewAppError("Post.IsValid", "model.post.is_valid.root_parent.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if !(len(o.OriginalId) == 26 || o.OriginalId == "") {
-		return NewAppError("Post.IsValid", "model.post.is_valid.original_id.app_error", nil, "", http.StatusBadRequest)
-	}
-
-	if utf8.RuneCountInString(o.Message) > maxPostSize {
-		return NewAppError("Post.IsValid", "model.post.is_valid.msg.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	if utf8.RuneCountInString(o.Hashtags) > POST_HASHTAGS_MAX_RUNES {
-		return NewAppError("Post.IsValid", "model.post.is_valid.hashtags.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	switch o.Type {
-	case
-		POST_DEFAULT,
-		POST_SYSTEM_GENERIC,
-		POST_JOIN_LEAVE,
-		POST_AUTO_RESPONDER,
-		POST_ADD_REMOVE,
-		POST_JOIN_CHANNEL,
-		POST_GUEST_JOIN_CHANNEL,
-		POST_LEAVE_CHANNEL,
-		POST_JOIN_TEAM,
-		POST_LEAVE_TEAM,
-		POST_ADD_TO_CHANNEL,
-		POST_ADD_GUEST_TO_CHANNEL,
-		POST_REMOVE_FROM_CHANNEL,
-		POST_MOVE_CHANNEL,
-		POST_ADD_TO_TEAM,
-		POST_REMOVE_FROM_TEAM,
-		POST_SLACK_ATTACHMENT,
-		POST_HEADER_CHANGE,
-		POST_PURPOSE_CHANGE,
-		POST_DISPLAYNAME_CHANGE,
-		POST_CONVERT_CHANNEL,
-		POST_CHANNEL_DELETED,
-		POST_CHANNEL_RESTORED,
-		POST_CHANGE_CHANNEL_PRIVACY,
-		POST_ME,
-		POST_ADD_BOT_TEAMS_CHANNELS,
-		POST_SYSTEM_WARN_METRIC_STATUS:
-	default:
-		if !strings.HasPrefix(o.Type, POST_CUSTOM_TYPE_PREFIX) {
-			return NewAppError("Post.IsValid", "model.post.is_valid.type.app_error", nil, "id="+o.Type, http.StatusBadRequest)
-		}
-	}
-
-	if utf8.RuneCountInString(ArrayToJson(o.Filenames)) > POST_FILENAMES_MAX_RUNES {
-		return NewAppError("Post.IsValid", "model.post.is_valid.filenames.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	if utf8.RuneCountInString(ArrayToJson(o.FileIds)) > POST_FILEIDS_MAX_RUNES {
-		return NewAppError("Post.IsValid", "model.post.is_valid.file_ids.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	if utf8.RuneCountInString(StringInterfaceToJson(o.GetProps())) > POST_PROPS_MAX_RUNES {
-		return NewAppError("Post.IsValid", "model.post.is_valid.props.app_error", nil, "id="+o.Id, http.StatusBadRequest)
-	}
-
-	return nil
-}
-
-func (o *Post) SanitizeProps() {
-	if o == nil {
-		return
-	}
-	membersToSanitize := []string{
-		PROPS_ADD_CHANNEL_MEMBER,
-	}
-
-	for _, member := range membersToSanitize {
-		if _, ok := o.GetProps()[member]; ok {
-			o.DelProp(member)
-		}
-	}
-	for _, p := range o.Participants {
-		p.Sanitize(map[string]bool{})
-	}
-}
-
-func (o *Post) PreSave() {
-	if o.Id == "" {
-		o.Id = NewId()
-	}
-
-	o.OriginalId = ""
-
-	if o.CreateAt == 0 {
-		o.CreateAt = GetMillis()
-	}
-
-	o.UpdateAt = o.CreateAt
-	o.PreCommit()
-}
-
-func (o *Post) PreCommit() {
-	if o.GetProps() == nil {
-		o.SetProps(make(map[string]interface{}))
-	}
-
-	if o.Filenames == nil {
-		o.Filenames = []string{}
-	}
-
-	if o.FileIds == nil {
-		o.FileIds = []string{}
-	}
-
-	o.GenerateActionIds()
-
-	// There's a rare bug where the client sends up duplicate FileIds so protect against that
-	o.FileIds = RemoveDuplicateStrings(o.FileIds)
-}
-
-func (o *Post) MakeNonNil() {
-	if o.GetProps() == nil {
-		o.SetProps(make(map[string]interface{}))
-	}
-}
-
-func (o *Post) DelProp(key string) {
-	o.propsMu.Lock()
-	defer o.propsMu.Unlock()
-	propsCopy := make(map[string]interface{}, len(o.Props)-1)
-	for k, v := range o.Props {
-		propsCopy[k] = v
-	}
-	delete(propsCopy, key)
-	o.Props = propsCopy
-}
-
-func (o *Post) AddProp(key string, value interface{}) {
-	o.propsMu.Lock()
-	defer o.propsMu.Unlock()
-	propsCopy := make(map[string]interface{}, len(o.Props)+1)
-	for k, v := range o.Props {
-		propsCopy[k] = v
-	}
-	propsCopy[key] = value
-	o.Props = propsCopy
-}
-
-func (o *Post) GetProps() StringInterface {
-	o.propsMu.RLock()
-	defer o.propsMu.RUnlock()
-	return o.Props
-}
-
-func (o *Post) SetProps(props StringInterface) {
-	o.propsMu.Lock()
-	defer o.propsMu.Unlock()
-	o.Props = props
-}
-
-func (o *Post) GetProp(key string) interface{} {
-	o.propsMu.RLock()
-	defer o.propsMu.RUnlock()
-	return o.Props[key]
-}
-
-func (o *Post) IsSystemMessage() bool {
-	return len(o.Type) >= len(POST_SYSTEM_MESSAGE_PREFIX) && o.Type[:len(POST_SYSTEM_MESSAGE_PREFIX)] == POST_SYSTEM_MESSAGE_PREFIX
-}
-
-// IsRemote returns true if the post originated on a remote cluster.
-func (o *Post) IsRemote() bool {
-	return o.RemoteId != nil && *o.RemoteId != ""
-}
-
-// GetRemoteID safely returns the remoteID or empty string if not remote.
-func (o *Post) GetRemoteID() string {
-	if o.RemoteId != nil {
-		return *o.RemoteId
-	}
-	return ""
-}
-
-func (o *Post) IsJoinLeaveMessage() bool {
-	return o.Type == POST_JOIN_LEAVE ||
-		o.Type == POST_ADD_REMOVE ||
-		o.Type == POST_JOIN_CHANNEL ||
-		o.Type == POST_LEAVE_CHANNEL ||
-		o.Type == POST_JOIN_TEAM ||
-		o.Type == POST_LEAVE_TEAM ||
-		o.Type == POST_ADD_TO_CHANNEL ||
-		o.Type == POST_REMOVE_FROM_CHANNEL ||
-		o.Type == POST_ADD_TO_TEAM ||
-		o.Type == POST_REMOVE_FROM_TEAM
-}
-
-func (o *Post) Patch(patch *PostPatch) {
-	if patch.IsPinned != nil {
-		o.IsPinned = *patch.IsPinned
-	}
-
-	if patch.Message != nil {
-		o.Message = *patch.Message
-	}
-
-	if patch.Props != nil {
-		newProps := *patch.Props
-		o.SetProps(newProps)
-	}
-
-	if patch.FileIds != nil {
-		o.FileIds = *patch.FileIds
-	}
-
-	if patch.HasReactions != nil {
-		o.HasReactions = *patch.HasReactions
-	}
-}
-
-func (o *PostPatch) ToJson() string {
-	b, err := json.Marshal(o)
-	if err != nil {
-		return ""
-	}
-
-	return string(b)
-}
-
-func PostPatchFromJson(data io.Reader) *PostPatch {
-	decoder := json.NewDecoder(data)
-	var post PostPatch
-	err := decoder.Decode(&post)
-	if err != nil {
-		return nil
-	}
-
-	return &post
-}
-
-func (o *SearchParameter) SearchParameterToJson() string {
-	b, err := json.Marshal(o)
-	if err != nil {
-		return ""
-	}
-
-	return string(b)
-}
-
-func SearchParameterFromJson(data io.Reader) (*SearchParameter, error) {
-	decoder := json.NewDecoder(data)
-	var searchParam SearchParameter
-	if err := decoder.Decode(&searchParam); err != nil {
-		return nil, err
-	}
-
-	return &searchParam, nil
-}
-
-func (o *Post) ChannelMentions() []string {
-	return ChannelMentions(o.Message)
-}
-
-// DisableMentionHighlights disables a posts mention highlighting and returns the first channel mention that was present in the message.
-func (o *Post) DisableMentionHighlights() string {
-	mention, hasMentions := findAtChannelMention(o.Message)
-	if hasMentions {
-		o.AddProp(POST_PROPS_MENTION_HIGHLIGHT_DISABLED, true)
-	}
-	return mention
-}
-
-// DisableMentionHighlights disables mention highlighting for a post patch if required.
-func (o *PostPatch) DisableMentionHighlights() {
-	if o.Message == nil {
-		return
-	}
-	if _, hasMentions := findAtChannelMention(*o.Message); hasMentions {
-		if o.Props == nil {
-			o.Props = &StringInterface{}
-		}
-		(*o.Props)[POST_PROPS_MENTION_HIGHLIGHT_DISABLED] = true
-	}
-}
-
-func findAtChannelMention(message string) (mention string, found bool) {
-	re := regexp.MustCompile(`(?i)\B@(channel|all|here)\b`)
-	matched := re.FindStringSubmatch(message)
-	if found = (len(matched) > 0); found {
-		mention = strings.ToLower(matched[0])
-	}
-	return
-}
-
-func (o *Post) Attachments() []*SlackAttachment {
-	if attachments, ok := o.GetProp("attachments").([]*SlackAttachment); ok {
-		return attachments
-	}
-	var ret []*SlackAttachment
-	if attachments, ok := o.GetProp("attachments").([]interface{}); ok {
-		for _, attachment := range attachments {
-			if enc, err := json.Marshal(attachment); err == nil {
-				var decoded SlackAttachment
-				if json.Unmarshal(enc, &decoded) == nil {
-					// Ignoring nil actions
-					i := 0
-					for _, action := range decoded.Actions {
-						if action != nil {
-							decoded.Actions[i] = action
-							i++
-						}
-					}
-					decoded.Actions = decoded.Actions[:i]
-
-					// Ignoring nil fields
-					i = 0
-					for _, field := range decoded.Fields {
-						if field != nil {
-							decoded.Fields[i] = field
-							i++
-						}
-					}
-					decoded.Fields = decoded.Fields[:i]
-					ret = append(ret, &decoded)
-				}
-			}
-		}
-	}
-	return ret
-}
-
-func (o *Post) AttachmentsEqual(input *Post) bool {
-	attachments := o.Attachments()
-	inputAttachments := input.Attachments()
-
-	if len(attachments) != len(inputAttachments) {
-		return false
-	}
-
-	for i := range attachments {
-		if !attachments[i].Equals(inputAttachments[i]) {
-			return false
-		}
-	}
-
-	return true
-}
-
-var markdownDestinationEscaper = strings.NewReplacer(
-	`\`, `\\`,
-	`<`, `\<`,
-	`>`, `\>`,
-	`(`, `\(`,
-	`)`, `\)`,
-)
-
-// WithRewrittenImageURLs returns a new shallow copy of the post where the message has been
-// rewritten via RewriteImageURLs.
-func (o *Post) WithRewrittenImageURLs(f func(string) string) *Post {
-	copy := o.Clone()
-	copy.Message = RewriteImageURLs(o.Message, f)
-	if copy.MessageSource == "" && copy.Message != o.Message {
-		copy.MessageSource = o.Message
-	}
-	return copy
-}
-
-func (o *PostEphemeral) ToUnsanitizedJson() string {
-	b, _ := json.Marshal(o)
-	return string(b)
-}
-
-// RewriteImageURLs takes a message and returns a copy that has all of the image URLs replaced
-// according to the function f. For each image URL, f will be invoked, and the resulting markdown
-// will contain the URL returned by that invocation instead.
-//
-// Image URLs are destination URLs used in inline images or reference definitions that are used
-// anywhere in the input markdown as an image.
-func RewriteImageURLs(message string, f func(string) string) string {
-	if !strings.Contains(message, "![") {
-		return message
-	}
-
-	var ranges []markdown.Range
-
-	markdown.Inspect(message, func(blockOrInline interface{}) bool {
-		switch v := blockOrInline.(type) {
-		case *markdown.ReferenceImage:
-			ranges = append(ranges, v.ReferenceDefinition.RawDestination)
-		case *markdown.InlineImage:
-			ranges = append(ranges, v.RawDestination)
-		default:
-			return true
-		}
-		return true
-	})
-
-	if ranges == nil {
-		return message
-	}
-
-	sort.Slice(ranges, func(i, j int) bool {
-		return ranges[i].Position < ranges[j].Position
-	})
-
-	copyRanges := make([]markdown.Range, 0, len(ranges))
-	urls := make([]string, 0, len(ranges))
-	resultLength := len(message)
-
-	start := 0
-	for i, r := range ranges {
-		switch {
-		case i == 0:
-		case r.Position != ranges[i-1].Position:
-			start = ranges[i-1].End
-		default:
-			continue
-		}
-		original := message[r.Position:r.End]
-		replacement := markdownDestinationEscaper.Replace(f(markdown.Unescape(original)))
-		resultLength += len(replacement) - len(original)
-		copyRanges = append(copyRanges, markdown.Range{Position: start, End: r.Position})
-		urls = append(urls, replacement)
-	}
-
-	result := make([]byte, resultLength)
-
-	offset := 0
-	for i, r := range copyRanges {
-		offset += copy(result[offset:], message[r.Position:r.End])
-		offset += copy(result[offset:], urls[i])
-	}
-	copy(result[offset:], message[ranges[len(ranges)-1].End:])
-
-	return string(result)
-}
-
-func (o *Post) IsFromOAuthBot() bool {
-	props := o.GetProps()
-	return props["from_webhook"] == "true" && props["override_username"] != ""
-}
-
-func (o *Post) ToNilIfInvalid() *Post {
-	if o.Id == "" {
-		return nil
-	}
-	return o
-}