github.com/haalcala/mattermost-server-change-repo/v5@v5.33.2/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  // ALL_EMOJI_PATTERN is same as the EMOJI_PATTERN except for allowing a '+' character.
    21  // This is to allow the system emoji :+1: to be matched.
    22  // We kept a separate variable to avoid renaming help texts for custom emoji's.
    23  // TODO: Merge ALL_EMOJI_PATTERN with EMOJI_PATTERN after updating custom emoji help texts
    24  var ALL_EMOJI_PATTERN = regexp.MustCompile(`:[a-zA-Z0-9_+-]+:`)
    25  
    26  type Emoji struct {
    27  	Id        string `json:"id"`
    28  	CreateAt  int64  `json:"create_at"`
    29  	UpdateAt  int64  `json:"update_at"`
    30  	DeleteAt  int64  `json:"delete_at"`
    31  	CreatorId string `json:"creator_id"`
    32  	Name      string `json:"name"`
    33  }
    34  
    35  func inSystemEmoji(emojiName string) bool {
    36  	_, ok := SystemEmojis[emojiName]
    37  	return ok
    38  }
    39  
    40  func GetSystemEmojiId(emojiName string) (string, bool) {
    41  	id, found := SystemEmojis[emojiName]
    42  	return id, found
    43  }
    44  
    45  func (emoji *Emoji) IsValid() *AppError {
    46  	if !IsValidId(emoji.Id) {
    47  		return NewAppError("Emoji.IsValid", "model.emoji.id.app_error", nil, "", http.StatusBadRequest)
    48  	}
    49  
    50  	if emoji.CreateAt == 0 {
    51  		return NewAppError("Emoji.IsValid", "model.emoji.create_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    52  	}
    53  
    54  	if emoji.UpdateAt == 0 {
    55  		return NewAppError("Emoji.IsValid", "model.emoji.update_at.app_error", nil, "id="+emoji.Id, http.StatusBadRequest)
    56  	}
    57  
    58  	if len(emoji.CreatorId) > 26 {
    59  		return NewAppError("Emoji.IsValid", "model.emoji.user_id.app_error", nil, "", http.StatusBadRequest)
    60  	}
    61  
    62  	return IsValidEmojiName(emoji.Name)
    63  }
    64  
    65  func IsValidEmojiName(name string) *AppError {
    66  	if name == "" || len(name) > EMOJI_NAME_MAX_LENGTH || !IsValidAlphaNumHyphenUnderscore(name, false) || inSystemEmoji(name) {
    67  		return NewAppError("Emoji.IsValid", "model.emoji.name.app_error", nil, "", http.StatusBadRequest)
    68  	}
    69  
    70  	return nil
    71  }
    72  
    73  func (emoji *Emoji) PreSave() {
    74  	if emoji.Id == "" {
    75  		emoji.Id = NewId()
    76  	}
    77  
    78  	emoji.CreateAt = GetMillis()
    79  	emoji.UpdateAt = emoji.CreateAt
    80  }
    81  
    82  func (emoji *Emoji) ToJson() string {
    83  	b, _ := json.Marshal(emoji)
    84  	return string(b)
    85  }
    86  
    87  func EmojiFromJson(data io.Reader) *Emoji {
    88  	var emoji *Emoji
    89  	json.NewDecoder(data).Decode(&emoji)
    90  	return emoji
    91  }
    92  
    93  func EmojiListToJson(emojiList []*Emoji) string {
    94  	b, _ := json.Marshal(emojiList)
    95  	return string(b)
    96  }
    97  
    98  func EmojiListFromJson(data io.Reader) []*Emoji {
    99  	var emojiList []*Emoji
   100  	json.NewDecoder(data).Decode(&emojiList)
   101  	return emojiList
   102  }