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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package model
import (
"encoding/json"
"io"
"unicode/utf8"
)
const (
POST_SYSTEM_MESSAGE_PREFIX = "system_"
POST_DEFAULT = ""
POST_SLACK_ATTACHMENT = "slack_attachment"
POST_JOIN_LEAVE = "system_join_leave"
POST_HEADER_CHANGE = "system_header_change"
)
type Post struct {
Id string `json:"id"`
CreateAt int64 `json:"create_at"`
UpdateAt int64 `json:"update_at"`
DeleteAt int64 `json:"delete_at"`
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"`
Type string `json:"type"`
Props StringInterface `json:"props"`
Hashtags string `json:"hashtags"`
Filenames StringArray `json:"filenames"`
PendingPostId string `json:"pending_post_id" db:"-"`
}
func (o *Post) ToJson() string {
b, err := json.Marshal(o)
if err != nil {
return ""
} else {
return string(b)
}
}
func PostFromJson(data io.Reader) *Post {
decoder := json.NewDecoder(data)
var o Post
err := decoder.Decode(&o)
if err == nil {
return &o
} else {
return nil
}
}
func (o *Post) Etag() string {
return Etag(o.Id, o.UpdateAt)
}
func (o *Post) IsValid() *AppError {
if len(o.Id) != 26 {
return NewAppError("Post.IsValid", "Invalid Id", "")
}
if o.CreateAt == 0 {
return NewAppError("Post.IsValid", "Create at must be a valid time", "id="+o.Id)
}
if o.UpdateAt == 0 {
return NewAppError("Post.IsValid", "Update at must be a valid time", "id="+o.Id)
}
if len(o.UserId) != 26 {
return NewAppError("Post.IsValid", "Invalid user id", "")
}
if len(o.ChannelId) != 26 {
return NewAppError("Post.IsValid", "Invalid channel id", "")
}
if !(len(o.RootId) == 26 || len(o.RootId) == 0) {
return NewAppError("Post.IsValid", "Invalid root id", "")
}
if !(len(o.ParentId) == 26 || len(o.ParentId) == 0) {
return NewAppError("Post.IsValid", "Invalid parent id", "")
}
if len(o.ParentId) == 26 && len(o.RootId) == 0 {
return NewAppError("Post.IsValid", "Invalid root id must be set if parent id set", "")
}
if !(len(o.OriginalId) == 26 || len(o.OriginalId) == 0) {
return NewAppError("Post.IsValid", "Invalid original id", "")
}
if utf8.RuneCountInString(o.Message) > 4000 {
return NewAppError("Post.IsValid", "Invalid message", "id="+o.Id)
}
if utf8.RuneCountInString(o.Hashtags) > 1000 {
return NewAppError("Post.IsValid", "Invalid hashtags", "id="+o.Id)
}
// should be removed once more message types are supported
if !(o.Type == POST_DEFAULT || o.Type == POST_JOIN_LEAVE || o.Type == POST_SLACK_ATTACHMENT || o.Type == POST_HEADER_CHANGE) {
return NewAppError("Post.IsValid", "Invalid type", "id="+o.Type)
}
if utf8.RuneCountInString(ArrayToJson(o.Filenames)) > 4000 {
return NewAppError("Post.IsValid", "Invalid filenames", "id="+o.Id)
}
if utf8.RuneCountInString(StringInterfaceToJson(o.Props)) > 8000 {
return NewAppError("Post.IsValid", "Invalid props", "id="+o.Id)
}
return nil
}
func (o *Post) PreSave() {
if o.Id == "" {
o.Id = NewId()
}
o.OriginalId = ""
if o.CreateAt == 0 {
o.CreateAt = GetMillis()
}
o.UpdateAt = o.CreateAt
if o.Props == nil {
o.Props = make(map[string]interface{})
}
if o.Filenames == nil {
o.Filenames = []string{}
}
}
func (o *Post) MakeNonNil() {
if o.Props == nil {
o.Props = make(map[string]interface{})
}
if o.Filenames == nil {
o.Filenames = []string{}
}
}
func (o *Post) AddProp(key string, value interface{}) {
o.MakeNonNil()
o.Props[key] = value
}
func (o *Post) PreExport() {
}
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
}
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