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arikawa/discord/emoji.go

115 lines
3 KiB
Go

package discord
import (
"net/url"
"strings"
)
// https://discord.com/developers/docs/resources/emoji#emoji-object
type Emoji struct {
// ID is the ID of the Emoji.
// The ID will be NullSnowflake, if the Emoji is a Unicode emoji.
ID EmojiID `json:"id"`
// Name is the name of the emoji.
Name string `json:"name"`
// RoleIDs are the roles the emoji is whitelisted to.
//
// This field is only available for custom emojis.
RoleIDs []RoleID `json:"roles,omitempty"`
// User is the user that created the emoji.
//
// This field is only available for custom emojis.
User User `json:"user,omitempty"`
// RequireColons specifies whether the emoji must be wrapped in colons.
//
// This field is only available for custom emojis.
RequireColons bool `json:"require_colons,omitempty"`
// Managed specifies whether the emoji is managed.
//
// This field is only available for custom emojis.
Managed bool `json:"managed,omitempty"`
// Animated specifies whether the emoji is animated.
//
// This field is only available for custom emojis.
Animated bool `json:"animated,omitempty"`
// Available specifies whether the emoji can be used.
// This may be false tue to loss of Server Boosts.
//
// This field is only available for custom emojis.
Available bool `json:"available,omitempty"`
}
// EmojiURL returns the URL of the emoji and auto-detects a suitable type.
//
// This will only work for custom emojis.
func (e Emoji) EmojiURL() string {
if e.Animated {
return e.EmojiURLWithType(GIFImage)
}
return e.EmojiURLWithType(PNGImage)
}
// EmojiURLWithType returns the URL to the emoji's image.
//
// This will only work for custom emojis.
//
// Supported ImageTypes: PNG, GIF
func (e Emoji) EmojiURLWithType(t ImageType) string {
if e.ID.IsNull() {
return ""
}
if t == AutoImage {
return e.EmojiURL()
}
return "https://cdn.discordapp.com/emojis/" + t.format(e.ID.String())
}
// APIEmoji represents an emoji identifier string formatted to be used with the
// API. It is formatted using Emoji's APIString method as well as the
// NewCustomEmoji function. If the emoji is a stock Unicode emoji, then this
// string contains it. Otherwise, it is formatted like "emoji_name:123123123",
// where "123123123" is the emoji ID.
type APIEmoji string
// NewCustomEmoji creates a new Emoji using a custom guild emoji as base.
// Unicode emojis should be directly converted.
func NewCustomEmoji(id EmojiID, name string) APIEmoji {
return APIEmoji(name + ":" + id.String())
}
// PathString returns the APIEmoji as a path-encoded string.
func (e APIEmoji) PathString() string {
return url.PathEscape(string(e))
}
// APIString returns a string usable for sending over to the API.
func (e Emoji) APIString() APIEmoji {
if !e.ID.IsValid() {
return APIEmoji(e.Name) // is unicode
}
return NewCustomEmoji(e.ID, e.Name)
}
// String formats the string like how the client does.
func (e Emoji) String() string {
if e.ID == 0 {
return e.Name
}
var parts = [3]string{
"", e.Name, e.ID.String(),
}
if e.Animated {
parts[0] = "a"
}
return "<" + strings.Join(parts[:], ":") + ">"
}