package discord

import "strings"

type Emoji struct {
	ID   Snowflake `json:"id,string"` // 0 for Unicode emojis
	Name string    `json:"name"`

	// These fields are optional

	RoleIDs []Snowflake `json:"roles,omitempty"`
	User    User        `json:"user,omitempty"`

	RequireColons bool `json:"require_colons,omitempty"`
	Managed       bool `json:"managed,omitempty"`
	Animated      bool `json:"animated,omitempty"`
}

// APIString returns a string usable for sending over to the API.
func (e Emoji) APIString() string {
	if !e.ID.Valid() {
		return e.Name // is unicode
	}

	return e.Name + ":" + e.ID.String()
}

// 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[:], ":") + ">"
}