Complete CollectionService

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

collection.go

@@ -109,7 +109,6 @@ func (s *CollectionService) Create(ctx context.Context, createRequest *Collectio
 
 	path := "api/v1/collections/create_collection"
 
-	// todo: do this for multireddit stuff too
 	form, err := query.Values(createRequest)
 	if err != nil {
 		return nil, nil, err
@@ -191,3 +190,85 @@ func (s *CollectionService) ReorderPosts(ctx context.Context, collectionID strin
 
 	return s.client.Do(ctx, req, nil)
 }
+
+// UpdateTitle updates a collection's title.
+func (s *CollectionService) UpdateTitle(ctx context.Context, id string, title string) (*Response, error) {
+	path := "api/v1/collections/update_collection_title"
+
+	form := url.Values{}
+	form.Set("collection_id", id)
+	form.Set("title", title)
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// UpdateDescription updates a collection's description.
+func (s *CollectionService) UpdateDescription(ctx context.Context, id string, description string) (*Response, error) {
+	path := "api/v1/collections/update_collection_description"
+
+	form := url.Values{}
+	form.Set("collection_id", id)
+	form.Set("description", description)
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// UpdateLayout updates a collection's layout.
+// layout is one of: TIMELINE, GALLERY.
+func (s *CollectionService) UpdateLayout(ctx context.Context, id string, layout string) (*Response, error) {
+	// todo: should we validate layout?
+	path := "api/v1/collections/update_collection_display_layout"
+
+	form := url.Values{}
+	form.Set("collection_id", id)
+	form.Set("display_layout", layout)
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// Follow follows a collection.
+func (s *CollectionService) Follow(ctx context.Context, id string) (*Response, error) {
+	path := "api/v1/collections/follow_collection"
+
+	form := url.Values{}
+	form.Set("collection_id", id)
+	form.Set("follow", "true")
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// Unfollow unfollows a collection.
+func (s *CollectionService) Unfollow(ctx context.Context, id string) (*Response, error) {
+	path := "api/v1/collections/follow_collection"
+
+	form := url.Values{}
+	form.Set("collection_id", id)
+	form.Set("follow", "false")
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}