8 files changed, 55 insertions, 12 deletions
diff --git a/app/controllers/api/base_controller.rb b/app/controllers/api/base_controller.rb
index de8fff30e..33df75b37 100644
--- a/app/controllers/api/base_controller.rb
+++ b/app/controllers/api/base_controller.rb
@@ -36,6 +36,14 @@ class Api::BaseController < ApplicationController
     render json: { error: 'This action is not allowed' }, status: 403
   end
 
+  rescue_from Mastodon::RaceConditionError do
+    render json: { error: 'There was a temporary problem serving your request, please try again' }, status: 503
+  end
+
+  rescue_from ActionController::ParameterMissing do |e|
+    render json: { error: e.to_s }, status: 400
+  end
+
   def doorkeeper_unauthorized_render_options(error: nil)
     { json: { error: (error.try(:description) || 'Not authorized') } }
   end
diff --git a/app/controllers/api/v1/accounts/statuses_controller.rb b/app/controllers/api/v1/accounts/statuses_controller.rb
index 13cb4caf1..0787cd636 100644
--- a/app/controllers/api/v1/accounts/statuses_controller.rb
+++ b/app/controllers/api/v1/accounts/statuses_controller.rb
@@ -29,14 +29,13 @@ class Api::V1::Accounts::StatusesController < Api::BaseController
 
   def account_statuses
     statuses = truthy_param?(:pinned) ? pinned_scope : permitted_account_statuses
-    statuses = statuses.paginate_by_id(limit_param(DEFAULT_STATUSES_LIMIT), params_slice(:max_id, :since_id, :min_id))
 
     statuses.merge!(only_media_scope) if truthy_param?(:only_media)
     statuses.merge!(no_replies_scope) if truthy_param?(:exclude_replies)
     statuses.merge!(no_reblogs_scope) if truthy_param?(:exclude_reblogs)
     statuses.merge!(hashtag_scope)    if params[:tagged].present?
 
-    statuses
+    statuses.paginate_by_id(limit_param(DEFAULT_STATUSES_LIMIT), params_slice(:max_id, :since_id, :min_id))
   end
 
   def permitted_account_statuses
diff --git a/app/controllers/api/v1/directories_controller.rb b/app/controllers/api/v1/directories_controller.rb
new file mode 100644
index 000000000..c91543e3a
--- /dev/null
+++ b/app/controllers/api/v1/directories_controller.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class Api::V1::DirectoriesController < Api::BaseController
+  before_action :require_enabled!
+  before_action :set_accounts
+
+  def show
+    render json: @accounts, each_serializer: REST::AccountSerializer
+  end
+
+  private
+
+  def require_enabled!
+    return not_found unless Setting.profile_directory
+  end
+
+  def set_accounts
+    @accounts = accounts_scope.offset(params[:offset]).limit(limit_param(DEFAULT_ACCOUNTS_LIMIT))
+  end
+
+  def accounts_scope
+    Account.discoverable.tap do |scope|
+      scope.merge!(Account.local)                                          if truthy_param?(:local)
+      scope.merge!(Account.by_recent_status)                               if params[:order].blank? || params[:order] == 'active'
+      scope.merge!(Account.order(id: :desc))                               if params[:order] == 'new'
+      scope.merge!(Account.not_excluded_by_account(current_account))       if current_account
+      scope.merge!(Account.not_domain_blocked_by_account(current_account)) if current_account && !truthy_param?(:local)
+    end
+  end
+end
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 5f88838e4..59624cad5 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -22,11 +22,13 @@ class ApplicationController < ActionController::Base
   helper_method :whitelist_mode?
 
   rescue_from ActionController::RoutingError, with: :not_found
-  rescue_from ActiveRecord::RecordNotFound, with: :not_found
   rescue_from ActionController::InvalidAuthenticityToken, with: :unprocessable_entity
   rescue_from ActionController::UnknownFormat, with: :not_acceptable
+  rescue_from ActionController::ParameterMissing, with: :bad_request
+  rescue_from ActiveRecord::RecordNotFound, with: :not_found
   rescue_from Mastodon::NotPermittedError, with: :forbidden
   rescue_from HTTP::Error, OpenSSL::SSL::SSLError, with: :internal_server_error
+  rescue_from Mastodon::RaceConditionError, with: :service_unavailable
 
   before_action :store_current_location, except: :raise_not_found, unless: :devise_controller?
   before_action :require_functional!, if: :user_signed_in?
@@ -166,10 +168,18 @@ class ApplicationController < ActionController::Base
     respond_with_error(406)
   end
 
+  def bad_request
+    respond_with_error(400)
+  end
+
   def internal_server_error
     respond_with_error(500)
   end
 
+  def service_unavailable
+    respond_with_error(503)
+  end
+
   def single_user_mode?
     @single_user_mode ||= Rails.configuration.x.single_user_mode && Account.where('id > 0').exists?
   end
diff --git a/app/controllers/directories_controller.rb b/app/controllers/directories_controller.rb
index f2d1f5661..bbfdde8af 100644
--- a/app/controllers/directories_controller.rb
+++ b/app/controllers/directories_controller.rb
@@ -7,7 +7,6 @@ class DirectoriesController < ApplicationController
   before_action :require_enabled!
   before_action :set_instance_presenter
   before_action :set_tag, only: :show
-  before_action :set_tags
   before_action :set_accounts
   before_action :set_pack
 
@@ -33,13 +32,10 @@ class DirectoriesController < ApplicationController
     @tag = Tag.discoverable.find_normalized!(params[:id])
   end
 
-  def set_tags
-    @tags = Tag.discoverable.limit(30).reject { |tag| tag.cached_sample_accounts.empty? }
-  end
-
   def set_accounts
-    @accounts = Account.discoverable.by_recent_status.page(params[:page]).per(40).tap do |query|
+    @accounts = Account.local.discoverable.by_recent_status.page(params[:page]).per(20).tap do |query|
       query.merge!(Account.tagged_with(@tag.id)) if @tag
+      query.merge!(Account.not_excluded_by_account(current_account)) if current_account
     end
   end
 
diff --git a/app/controllers/remote_follow_controller.rb b/app/controllers/remote_follow_controller.rb
index 46dd444a4..65dfa35db 100644
--- a/app/controllers/remote_follow_controller.rb
+++ b/app/controllers/remote_follow_controller.rb
@@ -30,7 +30,7 @@ class RemoteFollowController < ApplicationController
   end
 
   def session_params
-    { acct: session[:remote_follow] }
+    { acct: session[:remote_follow] || current_account&.username }
   end
 
   def set_pack
diff --git a/app/controllers/remote_interaction_controller.rb b/app/controllers/remote_interaction_controller.rb
index 5ae72989b..6b797b10f 100644
--- a/app/controllers/remote_interaction_controller.rb
+++ b/app/controllers/remote_interaction_controller.rb
@@ -33,7 +33,7 @@ class RemoteInteractionController < ApplicationController
   end
 
   def session_params
-    { acct: session[:remote_follow] }
+    { acct: session[:remote_follow] || current_account&.username }
   end
 
   def set_status
diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb
index 50bace217..d60bf98ab 100644
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@@ -11,7 +11,7 @@ module WellKnown
 
       expires_in 3.days, public: true
       render json: @account, serializer: WebfingerSerializer, content_type: 'application/jrd+json'
-    rescue ActiveRecord::RecordNotFound
+    rescue ActiveRecord::RecordNotFound, ActionController::ParameterMissing
       head 404
     end