github.com/gigforks/mattermost-server@v4.9.1-0.20180619094218-800d97fa55d0+incompatible/model/emoji.go (about)

     1  // Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
     2  // See License.txt for license information.
     3  
     4  package model
     5  
     6  import (
     7  	"encoding/json"
     8  	"io"
     9  	"net/http"
    10  )
    11  
    12  const (
    13  	EMOJI_NAME_MAX_LENGTH = 64
    14  	EMOJI_SORT_BY_NAME    = "name"
    15  )
    16  
    17  type Emoji struct {
    18  	Id        string `json:"id"`
    19  	CreateAt  int64  `json:"create_at"`
    20  	UpdateAt  int64  `json:"update_at"`
    21  	DeleteAt  int64  `json:"delete_at"`
    22  	CreatorId string `json:"creator_id"`
    23  	Name      string `json:"name"`
    24  }
    25  
    26  func inSystemEmoji(emojiName string) bool {
    27  	_, ok := SystemEmojis[emojiName]
    28  	return ok
    29  }
    30  
    31  func (emoji *Emoji) IsValid() *AppError {
    32  	if len(emoji.Id) != 26 {
    33  		return NewAppError("Emoji.IsValid", "model.emoji.id.app_error", nil, "", http.StatusBadRequest)
    34  	}
    35  
    36  	if emoji.CreateAt == 0 {
    37  		return NewAppError("Emoji.IsValid", "model.emoji.create_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    38  	}
    39  
    40  	if emoji.UpdateAt == 0 {
    41  		return NewAppError("Emoji.IsValid", "model.emoji.update_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    42  	}
    43  
    44  	if len(emoji.CreatorId) != 26 {
    45  		return NewAppError("Emoji.IsValid", "model.emoji.user_id.app_error", nil, "", http.StatusBadRequest)
    46  	}
    47  
    48  	if len(emoji.Name) == 0 || len(emoji.Name) > EMOJI_NAME_MAX_LENGTH || !IsValidAlphaNumHyphenUnderscore(emoji.Name, false) || inSystemEmoji(emoji.Name) {
    49  		return NewAppError("Emoji.IsValid", "model.emoji.name.app_error", nil, "", http.StatusBadRequest)
    50  	}
    51  
    52  	return nil
    53  }
    54  
    55  func (emoji *Emoji) PreSave() {
    56  	if emoji.Id == "" {
    57  		emoji.Id = NewId()
    58  	}
    59  
    60  	emoji.CreateAt = GetMillis()
    61  	emoji.UpdateAt = emoji.CreateAt
    62  }
    63  
    64  func (emoji *Emoji) ToJson() string {
    65  	b, _ := json.Marshal(emoji)
    66  	return string(b)
    67  }
    68  
    69  func EmojiFromJson(data io.Reader) *Emoji {
    70  	var emoji *Emoji
    71  	json.NewDecoder(data).Decode(&emoji)
    72  	return emoji
    73  }
    74  
    75  func EmojiListToJson(emojiList []*Emoji) string {
    76  	b, _ := json.Marshal(emojiList)
    77  	return string(b)
    78  }
    79  
    80  func EmojiListFromJson(data io.Reader) []*Emoji {
    81  	var emojiList []*Emoji
    82  	json.NewDecoder(data).Decode(&emojiList)
    83  	return emojiList
    84  }