[feature] add support for receiving federated status edits (#3597)

* add support for extracting Updated field from Statusable implementers

* add support for status edits in the database, and update status dereferencer to handle them

* remove unused AdditionalInfo{}.CreatedAt

* remove unused AdditionalEmojiInfo{}.CreatedAt

* update new mention creation to use status.UpdatedAt

* remove mention.UpdatedAt, fixes related to NewULIDFromTime() change

* add migration to remove Mention{}.UpdatedAt field

* add migration to add the StatusEdit{} table

* start adding tests, add delete function for status edits

* add more of status edit migrations, fill in more of the necessary edit delete functionality

* remove unused function

* allow generating gotosocial compatible ulid via CLI with `go run ./cmd/gen-ulid`

* add StatusEdit{} test models

* fix new statusedits sql

* use model instead of table name

* actually remove the Mention.UpdatedAt field...

* fix tests now new models are added, add more status edit DB tests

* fix panic wording

* add test for deleting status edits

* don't automatically set `updated_at` field on updated statuses

* flesh out more of the dereferencer status edit tests, ensure updated at field set on outgoing AS statuses

* remove media_attachments.updated_at column

* fix up more tests, further complete the dereferencer status edit tests

* update more status serialization tests not expecting 'updated' AS property

* gah!! json serialization tests!!

* undo some gtscontext wrapping changes

* more serialization test fixing :smiling_face_with_tear:

* more test fixing, ensure the edit.status_id field is actually set :facepalm:

* fix status edit test

* grrr linter

* add edited_at field to apimodel status

* remove the choice of paging on the timeline public filtered test (otherwise it needs updating every time you add statuses ...)

* ensure that status.updated_at always fits chronologically

* fix more serialization tests ...

* add more code comments

* fix envparsing

* update swagger file

* properly handle media description changes during status edits

* slight formatting tweak

* code comment

1 files changed, 6 insertions, 10 deletions

diff --git a/internal/typeutils/internaltofrontend.go b/internal/typeutils/internaltofrontend.go
index fda59610b..e0276a53b 100644
--- a/internal/typeutils/internaltofrontend.go
+++ b/internal/typeutils/internaltofrontend.go
@@ -1399,17 +1399,13 @@ func (c *Converter) baseStatusToFrontend(
 	}
 
 	// Nullable fields.
-	if s.InReplyToID != "" {
-		apiStatus.InReplyToID = util.Ptr(s.InReplyToID)
-	}
-
-	if s.InReplyToAccountID != "" {
-		apiStatus.InReplyToAccountID = util.Ptr(s.InReplyToAccountID)
-	}
-
-	if s.Language != "" {
-		apiStatus.Language = util.Ptr(s.Language)
+	if !s.UpdatedAt.Equal(s.CreatedAt) {
+		timestamp := util.FormatISO8601(s.UpdatedAt)
+		apiStatus.EditedAt = util.Ptr(timestamp)
 	}
+	apiStatus.InReplyToID = util.PtrIf(s.InReplyToID)
+	apiStatus.InReplyToAccountID = util.PtrIf(s.InReplyToAccountID)
+	apiStatus.Language = util.PtrIf(s.Language)
 
 	if app := s.CreatedWithApplication; app != nil {
 		apiStatus.Application, err = c.AppToAPIAppPublic(ctx, app)