[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/client/statuses/statuscontext.go

@@ -27,7 +27,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/oauth"
 )
 
-// StatusContextGETHandler swagger:operation GET /api/v1/statuses/{id}/context statusContext
+// StatusContextGETHandler swagger:operation GET /api/v1/statuses/{id}/context threadContext
 //
 // Return ancestors and descendants of the given status.
 //
@@ -55,9 +55,9 @@ import (
 //	responses:
 //		'200':
 //			name: statuses
-//			description: Status context object.
+//			description: Thread context object.
 //			schema:
-//				"$ref": "#/definitions/statusContext"
+//				"$ref": "#/definitions/threadContext"
 //		'400':
 //			description: bad request
 //		'401':
@@ -89,11 +89,11 @@ func (m *Module) StatusContextGETHandler(c *gin.Context) {
 		return
 	}
 
-	statusContext, errWithCode := m.processor.Status().ContextGet(c.Request.Context(), authed.Account, targetStatusID)
+	threadContext, errWithCode := m.processor.Status().ContextGet(c.Request.Context(), authed.Account, targetStatusID)
 	if errWithCode != nil {
 		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
 		return
 	}
 
-	c.JSON(http.StatusOK, statusContext)
+	c.JSON(http.StatusOK, threadContext)
 }

internal/api/model/status.go

@@ -102,28 +102,34 @@ type Status struct {
 	Text string `json:"text,omitempty"`
 	// A list of filters that matched this status and why they matched, if there are any such filters.
 	Filtered []FilterResult `json:"filtered,omitempty"`
+}
 
-	// Additional fields not exposed via JSON
-	// (used only internally for templating etc).
+// WebStatus is like *model.Status, but contains
+// additional fields used only for HTML templating.
+//
+// swagger:ignore
+type WebStatus struct {
+	*Status
 
-	// Template-ready language tag + string, based
-	// on *status.Language. Nil for non-web statuses.
-	//
-	// swagger:ignore
-	LanguageTag *language.Language `json:"-"`
+	// Template-ready language tag and
+	// string, based on *status.Language.
+	LanguageTag *language.Language
 
 	// Template-ready poll options with vote shares
 	// calculated as a percentage of total votes.
-	// Nil for non-web statuses.
-	//
-	// swagger:ignore
-	WebPollOptions []WebPollOption `json:"-"`
+	PollOptions []WebPollOption
 
 	// Status is from a local account.
-	// Always false for non-web statuses.
-	//
-	// swagger:ignore
-	Local bool `json:"-"`
+	Local bool
+
+	// Level of indentation at which to
+	// display this status in the web view.
+	Indent int
+
+	// This status is the first status after
+	// the "main" thread, so it and everything
+	// below it can be considered "replies".
+	ThreadFirstReply bool
 }
 
 /*

internal/api/model/statuscontext.go

@@ -17,12 +17,48 @@
 
 package model
 
-// Context models the tree around a given status.
+// ThreadContext models the tree or
+// "thread" around a given status.
 //
-// swagger:model statusContext
-type Context struct {
+// 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
+}

internal/api/util/opengraph.go

@@ -105,7 +105,7 @@ func (og *OGMeta) WithAccount(account *apimodel.Account) *OGMeta {
 // WithStatus uses the given status to build an ogMeta
 // struct specific to that status. It's suitable for serving
 // at status pages.
-func (og *OGMeta) WithStatus(status *apimodel.Status) *OGMeta {
+func (og *OGMeta) WithStatus(status *apimodel.WebStatus) *OGMeta {
 	og.Title = "Post by " + AccountTitle(status.Account, og.SiteName)
 	og.Type = "article"
 	if status.Language != nil {