Add Forum settings to Channel struct (#1306)

* Add DefaultRateLimitPerUser DefaultSortOrder DefaultForumLayout to Channel struct

* Add prefix

* Add prefix

* Fix typo

* Fix field name typo

* Add to ChannelEdit struct

* Fix order and name

* Fix name

* Apply suggestions from code review

Co-authored-by: Fedor Lapshin <fe.lap.prog@gmail.com>

* feat: cosmetic changes

Co-authored-by: Fedor Lapshin <fe.lap.prog@gmail.com>

structs.go

@@ -302,6 +302,28 @@ const (
 	ChannelFlagRequireTag ChannelFlags = 1 << 4
 )
 
+// ForumSortOrderType represents sort order of a forum channel.
+type ForumSortOrderType int
+
+const (
+	// ForumSortOrderLatestActivity sorts posts by activity.
+	ForumSortOrderLatestActivity ForumSortOrderType = 0
+	// ForumSortOrderCreationDate sorts posts by creation time (from most recent to oldest).
+	ForumSortOrderCreationDate ForumSortOrderType = 1
+)
+
+// ForumLayout represents layout of a forum channel.
+type ForumLayout int
+
+const (
+	// ForumLayoutNotSet represents no default layout.
+	ForumLayoutNotSet ForumLayout = 0
+	// ForumLayoutListView displays forum posts as a list.
+	ForumLayoutListView ForumLayout = 1
+	// ForumLayoutGalleryView displays forum posts as a collection of tiles.
+	ForumLayoutGalleryView ForumLayout = 2
+)
+
 // A Channel holds all data related to an individual Discord channel.
 type Channel struct {
 	// The ID of the channel.
@@ -390,6 +412,18 @@ type Channel struct {
 
 	// Emoji to use as the default reaction to a forum post.
 	DefaultReactionEmoji ForumDefaultReaction `json:"default_reaction_emoji"`
+
+	// The initial RateLimitPerUser to set on newly created threads in a channel.
+	// This field is copied to the thread at creation time and does not live update.
+	DefaultThreadRateLimitPerUser int `json:"default_thread_rate_limit_per_user"`
+
+	// The default sort order type used to order posts in forum channels.
+	// Defaults to null, which indicates a preferred sort order hasn't been set by a channel admin.
+	DefaultSortOrder *ForumSortOrderType `json:"default_sort_order"`
+
+	// The default forum layout view used to display posts in forum channels.
+	// Defaults to ForumLayoutNotSet, which indicates a layout view has not been set by a channel admin.
+	DefaultForumLayout ForumLayout `json:"default_forum_layout"`
 }
 
 // Mention returns a string which mentions the channel
@@ -414,6 +448,7 @@ type ChannelEdit struct {
 	ParentID                      string                 `json:"parent_id,omitempty"`
 	RateLimitPerUser              *int                   `json:"rate_limit_per_user,omitempty"`
 	Flags                         *ChannelFlags          `json:"flags,omitempty"`
+	DefaultThreadRateLimitPerUser *int                   `json:"default_thread_rate_limit_per_user,omitempty"`
 
 	// NOTE: threads only
 
@@ -426,6 +461,8 @@ type ChannelEdit struct {
 
 	AvailableTags        *[]ForumTag           `json:"available_tags,omitempty"`
 	DefaultReactionEmoji *ForumDefaultReaction `json:"default_reaction_emoji,omitempty"`
+	DefaultSortOrder     *ForumSortOrderType   `json:"default_sort_order,omitempty"` // TODO: null
+	DefaultForumLayout   *ForumLayout          `json:"default_forum_layout,omitempty"`
 
 	// NOTE: forum threads only
 	AppliedTags *[]string `json:"applied_tags,omitempty"`