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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package model
import (
"encoding/json"
"io"
)
type PostList struct {
Order []string `json:"order"`
Posts map[string]*Post `json:"posts"`
}
func NewPostList() *PostList {
return &PostList{
Order: make([]string, 0),
Posts: make(map[string]*Post),
}
}
func (o *PostList) ToJson() string {
b, err := json.Marshal(o)
if err != nil {
return ""
} else {
return string(b)
}
}
func (o *PostList) MakeNonNil() {
if o.Order == nil {
o.Order = make([]string, 0)
}
if o.Posts == nil {
o.Posts = make(map[string]*Post)
}
for _, v := range o.Posts {
v.MakeNonNil()
}
}
func (o *PostList) AddOrder(id string) {
if o.Order == nil {
o.Order = make([]string, 0, 128)
}
o.Order = append(o.Order, id)
}
func (o *PostList) AddPost(post *Post) {
if o.Posts == nil {
o.Posts = make(map[string]*Post)
}
o.Posts[post.Id] = post
}
func (o *PostList) Extend(other *PostList) {
for _, postId := range other.Order {
if _, ok := o.Posts[postId]; !ok {
o.AddPost(other.Posts[postId])
o.AddOrder(postId)
}
}
}
func (o *PostList) Etag() string {
id := "0"
var t int64 = 0
for _, v := range o.Posts {
if v.UpdateAt > t {
t = v.UpdateAt
id = v.Id
} else if v.UpdateAt == t && v.Id > id {
t = v.UpdateAt
id = v.Id
}
}
orderId := ""
if len(o.Order) > 0 {
orderId = o.Order[0]
}
return Etag(orderId, id, t)
}
func (o *PostList) IsChannelId(channelId string) bool {
for _, v := range o.Posts {
if v.ChannelId != channelId {
return false
}
}
return true
}
func PostListFromJson(data io.Reader) *PostList {
decoder := json.NewDecoder(data)
var o PostList
err := decoder.Decode(&o)
if err == nil {
return &o
} else {
return nil
}
}
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