github.com/mattermosttest/mattermost-server/v5@v5.0.0-20200917143240-9dfa12e121f9/model/emoji.go (about)

     1  // Copyright (c) 2015-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 GetSystemEmojiId(emojiName string) (string, bool) {
    35  	id, found := SystemEmojis[emojiName]
    36  	return id, found
    37  }
    38  
    39  func (emoji *Emoji) IsValid() *AppError {
    40  	if !IsValidId(emoji.Id) {
    41  		return NewAppError("Emoji.IsValid", "model.emoji.id.app_error", nil, "", http.StatusBadRequest)
    42  	}
    43  
    44  	if emoji.CreateAt == 0 {
    45  		return NewAppError("Emoji.IsValid", "model.emoji.create_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    46  	}
    47  
    48  	if emoji.UpdateAt == 0 {
    49  		return NewAppError("Emoji.IsValid", "model.emoji.update_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    50  	}
    51  
    52  	if len(emoji.CreatorId) > 26 {
    53  		return NewAppError("Emoji.IsValid", "model.emoji.user_id.app_error", nil, "", http.StatusBadRequest)
    54  	}
    55  
    56  	return IsValidEmojiName(emoji.Name)
    57  }
    58  
    59  func IsValidEmojiName(name string) *AppError {
    60  	if len(name) == 0 || len(name) > EMOJI_NAME_MAX_LENGTH || !IsValidAlphaNumHyphenUnderscore(name, false) || inSystemEmoji(name) {
    61  		return NewAppError("Emoji.IsValid", "model.emoji.name.app_error", nil, "", http.StatusBadRequest)
    62  	}
    63  
    64  	return nil
    65  }
    66  
    67  func (emoji *Emoji) PreSave() {
    68  	if emoji.Id == "" {
    69  		emoji.Id = NewId()
    70  	}
    71  
    72  	emoji.CreateAt = GetMillis()
    73  	emoji.UpdateAt = emoji.CreateAt
    74  }
    75  
    76  func (emoji *Emoji) ToJson() string {
    77  	b, _ := json.Marshal(emoji)
    78  	return string(b)
    79  }
    80  
    81  func EmojiFromJson(data io.Reader) *Emoji {
    82  	var emoji *Emoji
    83  	json.NewDecoder(data).Decode(&emoji)
    84  	return emoji
    85  }
    86  
    87  func EmojiListToJson(emojiList []*Emoji) string {
    88  	b, _ := json.Marshal(emojiList)
    89  	return string(b)
    90  }
    91  
    92  func EmojiListFromJson(data io.Reader) []*Emoji {
    93  	var emojiList []*Emoji
    94  	json.NewDecoder(data).Decode(&emojiList)
    95  	return emojiList
    96  }