[feature/frontend] Better visual separation between "main" thread and "replies" (#3093)

* [feature/frontend] Better web threading model

* fix test

* bwap

* tweaks

* more tweaks to wording

* typo

* indenting

* adjust wording

* aaa

internal/api/model/statuscontext.go

@@ -0,0 +1,64 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package model
+
+// ThreadContext models the tree or
+// "thread" around a given status.
+//
+// swagger:model threadContext
+type ThreadContext struct {
+	// Parents in the thread.
+	Ancestors []Status `json:"ancestors"`
+	// Children in the thread.
+	Descendants []Status `json:"descendants"`
+}
+
+type WebThreadContext struct {
+	// Parents in the thread.
+	Ancestors []*WebStatus `json:"ancestors"`
+
+	// Children in the thread.
+	Descendants []*WebStatus `json:"descendants"`
+
+	// The status around which the ancestors
+	// + descendants context was constructed.
+	Status *WebStatus `json:"-"`
+
+	// Total length of
+	// the main thread.
+	ThreadLength int
+
+	// Number of entries in
+	// the main thread shown.
+	ThreadShown int
+
+	// Number of statuses hidden
+	// from the main thread (not
+	// visible to requester etc).
+	ThreadHidden int
+
+	// Total number of replies
+	// in the replies section.
+	ThreadReplies int
+
+	// Number of replies shown.
+	ThreadRepliesShown int
+
+	// Number of replies hidden.
+	ThreadRepliesHidden int
+}