Initial open source release

internal/domain/channel_errors.go

@@ -0,0 +1,68 @@
+package domain
+
+import (
+	"errors"
+	"fmt"
+)
+
+var (
+	ErrChannelInvalid            = errors.New("channel invalid")
+	ErrChannelPrivate            = errors.New("channel private")
+	ErrChannelTitleInvalid       = errors.New("channel title invalid")
+	ErrChannelUserBanned         = errors.New("user banned in channel")
+	ErrChannelWriteForbidden     = errors.New("chat write forbidden")
+	ErrChannelAdminRequired      = errors.New("chat admin required")
+	ErrChannelNotModified        = errors.New("chat not modified")
+	ErrChannelForumMissing       = errors.New("channel forum missing")
+	ErrLinkNotModified           = errors.New("discussion link not modified")
+	ErrChatDiscussionUnallowed   = errors.New("chat discussion unallowed")
+	ErrBroadcastIDInvalid        = errors.New("broadcast id invalid")
+	ErrMegagroupIDInvalid        = errors.New("megagroup id invalid")
+	ErrMegagroupPrehistoryHidden = errors.New("megagroup prehistory hidden")
+	ErrChatPublicRequired        = errors.New("chat public required")
+	ErrChannelUserCreator        = errors.New("channel user creator")
+	ErrChannelRightForbidden     = errors.New("channel right forbidden")
+	ErrPersistentTimestamp       = errors.New("persistent timestamp invalid")
+	ErrInviteHashEmpty           = errors.New("invite hash empty")
+	ErrInviteHashInvalid         = errors.New("invite hash invalid")
+	ErrInviteHashExpired         = errors.New("invite hash expired")
+	ErrInvitePermanent           = errors.New("chat invite permanent")
+	ErrInviteRevokedMissing      = errors.New("invite revoked missing")
+	ErrInviteRequestSent         = errors.New("invite request sent")
+	ErrHideRequesterMissing      = errors.New("hide requester missing")
+	ErrUsersTooMuch              = errors.New("users too much")
+	ErrUserAlreadyParticipant    = errors.New("user already participant")
+	ErrUserKicked                = errors.New("user kicked")
+)
+
+// SlowModeWaitError carries the remaining wait seconds for a channel slow mode violation.
+type SlowModeWaitError struct {
+	Seconds int
+}
+
+func (e SlowModeWaitError) Error() string {
+	if e.Seconds <= 0 {
+		return "slowmode wait"
+	}
+	return fmt.Sprintf("slowmode wait %d seconds", e.Seconds)
+}
+
+// NewSlowModeWaitError creates a bounded slow mode wait error.
+func NewSlowModeWaitError(seconds int) error {
+	if seconds <= 0 {
+		seconds = 1
+	}
+	return SlowModeWaitError{Seconds: seconds}
+}
+
+// SlowModeWaitSeconds extracts the wait duration from err.
+func SlowModeWaitSeconds(err error) (int, bool) {
+	var wait SlowModeWaitError
+	if !errors.As(err, &wait) {
+		return 0, false
+	}
+	if wait.Seconds <= 0 {
+		return 1, true
+	}
+	return wait.Seconds, true
+}