github.com/cryptomisa/mattermost-server@v5.11.1+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  	"regexp"
    11  )
    12  
    13  const (
    14  	EMOJI_NAME_MAX_LENGTH = 64
    15  	EMOJI_SORT_BY_NAME    = "name"
    16  )
    17  
    18  var EMOJI_PATTERN = regexp.MustCompile(`:[a-zA-Z0-9_-]+:`)
    19  
    20  type Emoji struct {
    21  	Id        string `json:"id"`
    22  	CreateAt  int64  `json:"create_at"`
    23  	UpdateAt  int64  `json:"update_at"`
    24  	DeleteAt  int64  `json:"delete_at"`
    25  	CreatorId string `json:"creator_id"`
    26  	Name      string `json:"name"`
    27  }
    28  
    29  func inSystemEmoji(emojiName string) bool {
    30  	_, ok := SystemEmojis[emojiName]
    31  	return ok
    32  }
    33  
    34  func (emoji *Emoji) IsValid() *AppError {
    35  	if len(emoji.Id) != 26 {
    36  		return NewAppError("Emoji.IsValid", "model.emoji.id.app_error", nil, "", http.StatusBadRequest)
    37  	}
    38  
    39  	if emoji.CreateAt == 0 {
    40  		return NewAppError("Emoji.IsValid", "model.emoji.create_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    41  	}
    42  
    43  	if emoji.UpdateAt == 0 {
    44  		return NewAppError("Emoji.IsValid", "model.emoji.update_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    45  	}
    46  
    47  	if len(emoji.CreatorId) > 26 {
    48  		return NewAppError("Emoji.IsValid", "model.emoji.user_id.app_error", nil, "", http.StatusBadRequest)
    49  	}
    50  
    51  	return IsValidEmojiName(emoji.Name)
    52  }
    53  
    54  func IsValidEmojiName(name string) *AppError {
    55  	if len(name) == 0 || len(name) > EMOJI_NAME_MAX_LENGTH || !IsValidAlphaNumHyphenUnderscore(name, false) || inSystemEmoji(name) {
    56  		return NewAppError("Emoji.IsValid", "model.emoji.name.app_error", nil, "", http.StatusBadRequest)
    57  	}
    58  
    59  	return nil
    60  }
    61  
    62  func (emoji *Emoji) PreSave() {
    63  	if emoji.Id == "" {
    64  		emoji.Id = NewId()
    65  	}
    66  
    67  	emoji.CreateAt = GetMillis()
    68  	emoji.UpdateAt = emoji.CreateAt
    69  }
    70  
    71  func (emoji *Emoji) ToJson() string {
    72  	b, _ := json.Marshal(emoji)
    73  	return string(b)
    74  }
    75  
    76  func EmojiFromJson(data io.Reader) *Emoji {
    77  	var emoji *Emoji
    78  	json.NewDecoder(data).Decode(&emoji)
    79  	return emoji
    80  }
    81  
    82  func EmojiListToJson(emojiList []*Emoji) string {
    83  	b, _ := json.Marshal(emojiList)
    84  	return string(b)
    85  }
    86  
    87  func EmojiListFromJson(data io.Reader) []*Emoji {
    88  	var emojiList []*Emoji
    89  	json.NewDecoder(data).Decode(&emojiList)
    90  	return emojiList
    91  }