[feature] add support for clients editing statuses and fetching status revision history (#3628)

* start adding client support for making status edits and viewing history

* modify 'freshest' freshness window to be 5s, add typeutils test for status -> api edits

* only populate the status edits when specifically requested

* start adding some simple processor status edit tests

* add test editing status but adding a poll

* test edits appropriately adding poll expiry handlers

* finish adding status edit tests

* store both new and old revision emojis in status

* add code comment

* ensure the requester's account is populated before status edits

* add code comments for status edit tests

* update status edit form swagger comments

* remove unused function

* fix status source test

* add more code comments, move media description check back to media process in status create

* fix tests, add necessary form struct tag

1 files changed, 34 insertions, 0 deletions

diff --git a/internal/processing/common/status.go b/internal/processing/common/status.go
index da5cf1290..01f2ab72d 100644
--- a/internal/processing/common/status.go
+++ b/internal/processing/common/status.go
@@ -31,6 +31,40 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 )
 
+// GetOwnStatus fetches the given status with ID,
+// and ensures that it belongs to given requester.
+func (p *Processor) GetOwnStatus(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+	targetID string,
+) (
+	*gtsmodel.Status,
+	gtserror.WithCode,
+) {
+	target, err := p.state.DB.GetStatusByID(ctx, targetID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err := gtserror.Newf("error getting from db: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	switch {
+	case target == nil:
+		const text = "target status not found"
+		return nil, gtserror.NewErrorNotFound(
+			errors.New(text),
+			text,
+		)
+
+	case target.AccountID != requester.ID:
+		return nil, gtserror.NewErrorNotFound(
+			errors.New("status does not belong to requester"),
+			"target status not found",
+		)
+	}
+
+	return target, nil
+}
+
 // GetTargetStatusBy fetches the target status with db load
 // function, given the authorized (or, nil) requester's
 // account. This returns an approprate gtserror.WithCode