always reply to a specific message; moved matrix-related utils to the linkpearl; refactoring

utils/matrix.go

@@ -1,7 +1,6 @@
 package utils
 
 import (
-	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/event"
 	"maunium.net/go/mautrix/id"
 )
@@ -25,79 +24,3 @@ func RelatesTo(threads bool, parentID id.EventID) *event.RelatesTo {
 		},
 	}
 }
-
-// EventParent returns parent event ID (either from thread or from reply-to relation)
-func EventParent(currentID id.EventID, content *event.MessageEventContent) id.EventID {
-	if content == nil {
-		return currentID
-	}
-
-	relation := content.OptionalGetRelatesTo()
-	if relation == nil {
-		return currentID
-	}
-
-	threadParent := relation.GetThreadParent()
-	if threadParent != "" {
-		return threadParent
-	}
-
-	replyParent := relation.GetReplyTo()
-	if replyParent != "" {
-		return replyParent
-	}
-
-	return currentID
-}
-
-// EventField returns field value from raw event content
-func EventField[T any](content *event.Content, field string) T {
-	var zero T
-	raw := content.Raw[field]
-	if raw == nil {
-		return zero
-	}
-
-	v, ok := raw.(T)
-	if !ok {
-		return zero
-	}
-
-	return v
-}
-
-func ParseContent(evt *event.Event, eventType event.Type) {
-	if evt.Content.Parsed != nil {
-		return
-	}
-	perr := evt.Content.ParseRaw(eventType)
-	if perr != nil {
-		log.Error().Err(perr).Msg("cannot parse event content")
-	}
-}
-
-// UnwrapError tries to unwrap a error into something meaningful, like mautrix.HTTPError or mautrix.RespError
-func UnwrapError(err error) error {
-	switch err.(type) {
-	case nil:
-		return nil
-	case mautrix.HTTPError:
-		return unwrapHTTPError(err)
-	default:
-		return err
-	}
-}
-
-func unwrapHTTPError(err error) error {
-	httperr, ok := err.(mautrix.HTTPError)
-	if !ok {
-		return err
-	}
-
-	uwerr := httperr.Unwrap()
-	if uwerr != nil {
-		return uwerr
-	}
-
-	return httperr
-}