111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
package discord
|
|
|
|
import (
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
// Epoch is the Discord epoch constant in time.Duration (nanoseconds)
|
|
// since Unix epoch.
|
|
const Epoch = 1420070400000 * time.Millisecond
|
|
|
|
// DurationSinceEpoch returns the duration from the Discord epoch to current.
|
|
func DurationSinceEpoch(t time.Time) time.Duration {
|
|
return time.Duration(t.UnixNano()) - Epoch
|
|
}
|
|
|
|
//go:generate go run ../utils/gensnowflake -o snowflake_types.go AppID AttachmentID AuditLogEntryID ChannelID CommandID EmojiID GuildID IntegrationID InteractionID MessageID RoleID StageID StickerID StickerPackID TeamID UserID WebhookID
|
|
|
|
// Mention generates the mention syntax for this channel ID.
|
|
func (s ChannelID) Mention() string { return "<#" + s.String() + ">" }
|
|
|
|
// Mention generates the mention syntax for this role ID.
|
|
func (s RoleID) Mention() string { return "<@&" + s.String() + ">" }
|
|
|
|
// Mention generates the mention syntax for this user ID.
|
|
func (s UserID) Mention() string { return "<@" + s.String() + ">" }
|
|
|
|
// Snowflake is the format of Discord's ID type. It is a format that can be
|
|
// sorted chronologically.
|
|
type Snowflake uint64
|
|
|
|
// NullSnowflake gets encoded into a null. This is used for
|
|
// optional and nullable snowflake fields.
|
|
const NullSnowflake = ^Snowflake(0)
|
|
|
|
// NewSnowflake creates a new snowflake from the given time.
|
|
func NewSnowflake(t time.Time) Snowflake {
|
|
return Snowflake((DurationSinceEpoch(t) / time.Millisecond) << 22)
|
|
}
|
|
|
|
// ParseSnowflake parses a snowflake.
|
|
func ParseSnowflake(sf string) (Snowflake, error) {
|
|
if sf == "null" {
|
|
return NullSnowflake, nil
|
|
}
|
|
|
|
u, err := strconv.ParseUint(sf, 10, 64)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
return Snowflake(u), nil
|
|
}
|
|
|
|
func (s *Snowflake) UnmarshalJSON(v []byte) error {
|
|
p, err := ParseSnowflake(strings.Trim(string(v), `"`))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
*s = p
|
|
return nil
|
|
}
|
|
|
|
func (s Snowflake) MarshalJSON() ([]byte, error) {
|
|
// This includes 0 and null, because MarshalJSON does not dictate when a
|
|
// value gets omitted.
|
|
if !s.IsValid() {
|
|
return []byte("null"), nil
|
|
} else {
|
|
return []byte(`"` + strconv.FormatInt(int64(s), 10) + `"`), nil
|
|
}
|
|
}
|
|
|
|
// String returns the ID, or nothing if the snowflake isn't valid.
|
|
func (s Snowflake) String() string {
|
|
// Check if negative.
|
|
if !s.IsValid() {
|
|
return ""
|
|
}
|
|
return strconv.FormatUint(uint64(s), 10)
|
|
}
|
|
|
|
// IsValid returns whether or not the snowflake is valid.
|
|
func (s Snowflake) IsValid() bool {
|
|
return !(int64(s) == 0 || s == NullSnowflake)
|
|
}
|
|
|
|
// IsNull returns whether or not the snowflake is null.
|
|
func (s Snowflake) IsNull() bool {
|
|
return s == NullSnowflake
|
|
}
|
|
|
|
func (s Snowflake) Time() time.Time {
|
|
unixnano := time.Duration(s>>22)*time.Millisecond + Epoch
|
|
return time.Unix(0, int64(unixnano))
|
|
}
|
|
|
|
func (s Snowflake) Worker() uint8 {
|
|
return uint8(s & 0x3E0000 >> 17)
|
|
}
|
|
|
|
func (s Snowflake) PID() uint8 {
|
|
return uint8(s & 0x1F000 >> 12)
|
|
}
|
|
|
|
func (s Snowflake) Increment() uint16 {
|
|
return uint16(s & 0xFFF)
|
|
}
|