Add `/api/v1/accounts/familiar_followers` to REST API (#17700)

* Add `/api/v1/accounts/familiar_followers` to REST API

* Change hide network preference to be stored consistently for local and remote accounts

* Add dummy classes to migration

* Apply suggestions from code review

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

22 files changed, 169 insertions, 32 deletions

diff --git a/app/controllers/api/v1/accounts/familiar_followers_controller.rb b/app/controllers/api/v1/accounts/familiar_followers_controller.rb
new file mode 100644
index 000000000..b0bd8018a
--- /dev/null
+++ b/app/controllers/api/v1/accounts/familiar_followers_controller.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class Api::V1::Accounts::FamiliarFollowersController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :read, :'read:follows' }
+  before_action :require_user!
+  before_action :set_accounts
+
+  def index
+    render json: familiar_followers.accounts, each_serializer: REST::FamiliarFollowersSerializer
+  end
+
+  private
+
+  def set_accounts
+    @accounts = Account.without_suspended.where(id: account_ids).select('id, hide_collections').index_by(&:id).values_at(*account_ids).compact
+  end
+
+  def familiar_followers
+    FamiliarFollowersPresenter.new(@accounts, current_user.account_id)
+  end
+
+  def account_ids
+    Array(params[:id]).map(&:to_i)
+  end
+end
diff --git a/app/controllers/follower_accounts_controller.rb b/app/controllers/follower_accounts_controller.rb
index b3589a39f..f3f8336c9 100644
--- a/app/controllers/follower_accounts_controller.rb
+++ b/app/controllers/follower_accounts_controller.rb
@@ -15,13 +15,13 @@ class FollowerAccountsController < ApplicationController
       format.html do
         expires_in 0, public: true unless user_signed_in?
 
-        next if @account.user_hides_network?
+        next if @account.hide_collections?
 
         follows
       end
 
       format.json do
-        raise Mastodon::NotPermittedError if page_requested? && @account.user_hides_network?
+        raise Mastodon::NotPermittedError if page_requested? && @account.hide_collections?
 
         expires_in(page_requested? ? 0 : 3.minutes, public: public_fetch_mode?)
 
@@ -82,7 +82,7 @@ class FollowerAccountsController < ApplicationController
   end
 
   def restrict_fields_to
-    if page_requested? || !@account.user_hides_network?
+    if page_requested? || !@account.hide_collections?
       # Return all fields
     else
       %i(id type total_items)
diff --git a/app/controllers/following_accounts_controller.rb b/app/controllers/following_accounts_controller.rb
index 8a72dc475..9d7f4c9bf 100644
--- a/app/controllers/following_accounts_controller.rb
+++ b/app/controllers/following_accounts_controller.rb
@@ -15,13 +15,13 @@ class FollowingAccountsController < ApplicationController
       format.html do
         expires_in 0, public: true unless user_signed_in?
 
-        next if @account.user_hides_network?
+        next if @account.hide_collections?
 
         follows
       end
 
       format.json do
-        raise Mastodon::NotPermittedError if page_requested? && @account.user_hides_network?
+        raise Mastodon::NotPermittedError if page_requested? && @account.hide_collections?
 
         expires_in(page_requested? ? 0 : 3.minutes, public: public_fetch_mode?)
 
@@ -82,7 +82,7 @@ class FollowingAccountsController < ApplicationController
   end
 
   def restrict_fields_to
-    if page_requested? || !@account.user_hides_network?
+    if page_requested? || !@account.hide_collections?
       # Return all fields
     else
       %i(id type total_items)
diff --git a/app/controllers/settings/preferences_controller.rb b/app/controllers/settings/preferences_controller.rb
index 32b5d7948..c7492700c 100644
--- a/app/controllers/settings/preferences_controller.rb
+++ b/app/controllers/settings/preferences_controller.rb
@@ -47,7 +47,6 @@ class Settings::PreferencesController < Settings::BaseController
       :setting_system_font_ui,
       :setting_noindex,
       :setting_theme,
-      :setting_hide_network,
       :setting_aggregate_reblogs,
       :setting_show_application,
       :setting_advanced_layout,
diff --git a/app/controllers/settings/profiles_controller.rb b/app/controllers/settings/profiles_controller.rb
index 0c15447a6..be5b4f302 100644
--- a/app/controllers/settings/profiles_controller.rb
+++ b/app/controllers/settings/profiles_controller.rb
@@ -20,7 +20,7 @@ class Settings::ProfilesController < Settings::BaseController
   private
 
   def account_params
-    params.require(:account).permit(:display_name, :note, :avatar, :header, :locked, :bot, :discoverable, fields_attributes: [:name, :value])
+    params.require(:account).permit(:display_name, :note, :avatar, :header, :locked, :bot, :discoverable, :hide_collections, fields_attributes: [:name, :value])
   end
 
   def set_account
diff --git a/app/lib/user_settings_decorator.rb b/app/lib/user_settings_decorator.rb
index e37bc6d9f..de054e403 100644
--- a/app/lib/user_settings_decorator.rb
+++ b/app/lib/user_settings_decorator.rb
@@ -31,7 +31,6 @@ class UserSettingsDecorator
     user.settings['system_font_ui']      = system_font_ui_preference if change?('setting_system_font_ui')
     user.settings['noindex']             = noindex_preference if change?('setting_noindex')
     user.settings['theme']               = theme_preference if change?('setting_theme')
-    user.settings['hide_network']        = hide_network_preference if change?('setting_hide_network')
     user.settings['aggregate_reblogs']   = aggregate_reblogs_preference if change?('setting_aggregate_reblogs')
     user.settings['show_application']    = show_application_preference if change?('setting_show_application')
     user.settings['advanced_layout']     = advanced_layout_preference if change?('setting_advanced_layout')
@@ -97,10 +96,6 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_noindex'
   end
 
-  def hide_network_preference
-    boolean_cast_setting 'setting_hide_network'
-  end
-
   def show_application_preference
     boolean_cast_setting 'setting_show_application'
   end
diff --git a/app/models/account.rb b/app/models/account.rb
index dfdf9045f..1717f1605 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -349,11 +349,11 @@ class Account < ApplicationRecord
   end
 
   def hides_followers?
-    hide_collections? || user_hides_network?
+    hide_collections?
   end
 
   def hides_following?
-    hide_collections? || user_hides_network?
+    hide_collections?
   end
 
   def object_type
diff --git a/app/models/user.rb b/app/models/user.rb
index bbf850d84..146bdcd2a 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -126,7 +126,7 @@ class User < ApplicationRecord
   has_many :session_activations, dependent: :destroy
 
   delegate :auto_play_gif, :default_sensitive, :unfollow_modal, :boost_modal, :delete_modal,
-           :reduce_motion, :system_font_ui, :noindex, :theme, :display_media, :hide_network,
+           :reduce_motion, :system_font_ui, :noindex, :theme, :display_media,
            :expand_spoilers, :default_language, :aggregate_reblogs, :show_application,
            :advanced_layout, :use_blurhash, :use_pending_items, :trends, :crop_images,
            :disable_swiping,
@@ -273,10 +273,6 @@ class User < ApplicationRecord
     settings.notification_emails['trending_tag']
   end
 
-  def hides_network?
-    @hides_network ||= settings.hide_network
-  end
-
   def aggregates_reblogs?
     @aggregates_reblogs ||= settings.aggregate_reblogs
   end
diff --git a/app/presenters/familiar_followers_presenter.rb b/app/presenters/familiar_followers_presenter.rb
new file mode 100644
index 000000000..c1d944b80
--- /dev/null
+++ b/app/presenters/familiar_followers_presenter.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class FamiliarFollowersPresenter
+  class Result < ActiveModelSerializers::Model
+    attributes :id, :accounts
+  end
+
+  def initialize(accounts, current_account_id)
+    @accounts           = accounts
+    @current_account_id = current_account_id
+  end
+
+  def accounts
+    map = Follow.includes(account: :account_stat).where(target_account_id: @accounts.map(&:id)).where(account_id: Follow.where(account_id: @current_account_id).joins(:target_account).merge(Account.where(hide_collections: [nil, false])).select(:target_account_id)).group_by(&:target_account_id)
+    @accounts.map { |account| Result.new(id: account.id, accounts: (account.hide_collections? ? [] : (map[account.id] || [])).map(&:account)) }
+  end
+end
diff --git a/app/serializers/rest/familiar_followers_serializer.rb b/app/serializers/rest/familiar_followers_serializer.rb
new file mode 100644
index 000000000..0a7e923f8
--- /dev/null
+++ b/app/serializers/rest/familiar_followers_serializer.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class REST::FamiliarFollowersSerializer < ActiveModel::Serializer
+  attribute :id
+
+  has_many :accounts, serializer: REST::AccountSerializer
+
+  def id
+    object.id.to_s
+  end
+end
diff --git a/app/views/follower_accounts/index.html.haml b/app/views/follower_accounts/index.html.haml
index 645dd2de1..92de35a9f 100644
--- a/app/views/follower_accounts/index.html.haml
+++ b/app/views/follower_accounts/index.html.haml
@@ -7,7 +7,7 @@
 
 = render 'accounts/header', account: @account
 
-- if @account.user_hides_network?
+- if @account.hide_collections?
   .nothing-here= t('accounts.network_hidden')
 - elsif user_signed_in? && @account.blocking?(current_account)
   .nothing-here= t('accounts.unavailable')
diff --git a/app/views/following_accounts/index.html.haml b/app/views/following_accounts/index.html.haml
index 17fe79018..9bb1a9edd 100644
--- a/app/views/following_accounts/index.html.haml
+++ b/app/views/following_accounts/index.html.haml
@@ -7,7 +7,7 @@
 
 = render 'accounts/header', account: @account
 
-- if @account.user_hides_network?
+- if @account.hide_collections?
   .nothing-here= t('accounts.network_hidden')
 - elsif user_signed_in? && @account.blocking?(current_account)
   .nothing-here= t('accounts.unavailable')
diff --git a/app/views/settings/preferences/other/show.html.haml b/app/views/settings/preferences/other/show.html.haml
index b7ae3d2ef..44f4af2eb 100644
--- a/app/views/settings/preferences/other/show.html.haml
+++ b/app/views/settings/preferences/other/show.html.haml
@@ -11,9 +11,6 @@
     = f.input :setting_noindex, as: :boolean, wrapper: :with_label
 
   .fields-group
-    = f.input :setting_hide_network, as: :boolean, wrapper: :with_label
-
-  .fields-group
     = f.input :setting_aggregate_reblogs, as: :boolean, wrapper: :with_label, recommended: true
 
   %h4= t 'preferences.posting_defaults'
diff --git a/app/views/settings/profiles/show.html.haml b/app/views/settings/profiles/show.html.haml
index d325a9ea5..fe9666d84 100644
--- a/app/views/settings/profiles/show.html.haml
+++ b/app/views/settings/profiles/show.html.haml
@@ -30,7 +30,10 @@
     = f.input :bot, as: :boolean, wrapper: :with_label, hint: t('simple_form.hints.defaults.bot')
 
   .fields-group
-    = f.input :discoverable, as: :boolean, wrapper: :with_label, hint: t(Setting.profile_directory ? 'simple_form.hints.defaults.discoverable' : 'simple_form.hints.defaults.discoverable_no_directory'), recommended: true
+    = f.input :discoverable, as: :boolean, wrapper: :with_label, hint: t('simple_form.hints.defaults.discoverable'), recommended: true
+
+  .fields-group
+    = f.input :hide_collections, as: :boolean, wrapper: :with_label, label: t('simple_form.labels.defaults.setting_hide_network'), hint: t('simple_form.hints.defaults.setting_hide_network')
 
   %hr.spacer/
 
diff --git a/config/locales/simple_form.en.yml b/config/locales/simple_form.en.yml
index c5e75b408..b19b7891f 100644
--- a/config/locales/simple_form.en.yml
+++ b/config/locales/simple_form.en.yml
@@ -37,8 +37,7 @@ en:
         current_password: For security purposes please enter the password of the current account
         current_username: To confirm, please enter the username of the current account
         digest: Only sent after a long period of inactivity and only if you have received any personal messages in your absence
-        discoverable: Allow your account to be discovered by strangers through recommendations, profile directory and other features
-        discoverable_no_directory: Allow your account to be discovered by strangers through recommendations and other features
+        discoverable: Allow your account to be discovered by strangers through recommendations, trends and other features
         email: You will be sent a confirmation e-mail
         fields: You can have up to 4 items displayed as a table on your profile
         header: PNG, GIF or JPG. At most %{size}. Will be downscaled to %{dimensions}px
diff --git a/config/routes.rb b/config/routes.rb
index 25eb1558f..9e2f7a648 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -493,6 +493,7 @@ Rails.application.routes.draw do
         resource :search, only: :show, controller: :search
         resource :lookup, only: :show, controller: :lookup
         resources :relationships, only: :index
+        resources :familiar_followers, only: :index
       end
 
       resources :accounts, only: [:create, :show] do
diff --git a/config/settings.yml b/config/settings.yml
index e63788ba2..06dd2b3f3 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -17,7 +17,6 @@ defaults: &defaults
   timeline_preview: true
   show_staff_badge: true
   default_sensitive: false
-  hide_network: false
   unfollow_modal: false
   boost_modal: false
   delete_modal: true
diff --git a/db/migrate/20220304195405_migrate_hide_network_preference.rb b/db/migrate/20220304195405_migrate_hide_network_preference.rb
new file mode 100644
index 000000000..102ee46d6
--- /dev/null
+++ b/db/migrate/20220304195405_migrate_hide_network_preference.rb
@@ -0,0 +1,37 @@
+class MigrateHideNetworkPreference < ActiveRecord::Migration[6.1]
+  disable_ddl_transaction!
+
+  # Dummy classes, to make migration possible across version changes
+  class Account < ApplicationRecord
+    has_one :user, inverse_of: :account
+    scope :local, -> { where(domain: nil) }
+  end
+
+  class User < ApplicationRecord
+    belongs_to :account
+  end
+
+  def up
+    Account.reset_column_information
+
+    Setting.unscoped.where(thing_type: 'User', var: 'hide_network').find_each do |setting|
+      account = User.find(setting.thing_id).account
+
+      ApplicationRecord.transaction do
+        account.update(hide_collections: setting.value)
+        setting.delete
+      end
+    rescue ActiveRecord::RecordNotFound
+      next
+    end
+  end
+
+  def down
+    Account.local.where(hide_collections: true).includes(:user).find_each do |account|
+      ApplicationRecord.transaction do
+        Setting.create(thing_type: 'User', thing_id: account.user.id, var: 'hide_network', value: account.hide_collections?)
+        account.update(hide_collections: nil)
+      end
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 756e5e9ab..3666804ee 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_02_27_041951) do
+ActiveRecord::Schema.define(version: 2022_03_04_195405) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
diff --git a/spec/controllers/follower_accounts_controller_spec.rb b/spec/controllers/follower_accounts_controller_spec.rb
index eb095cf30..4d2a6e01a 100644
--- a/spec/controllers/follower_accounts_controller_spec.rb
+++ b/spec/controllers/follower_accounts_controller_spec.rb
@@ -103,7 +103,7 @@ describe FollowerAccountsController do
 
         context 'when account hides their network' do
           before do
-            alice.user.settings.hide_network = true
+            alice.update(hide_collections: true)
           end
 
           it 'returns followers count' do
diff --git a/spec/controllers/following_accounts_controller_spec.rb b/spec/controllers/following_accounts_controller_spec.rb
index af5ce0787..bb6d221ca 100644
--- a/spec/controllers/following_accounts_controller_spec.rb
+++ b/spec/controllers/following_accounts_controller_spec.rb
@@ -103,7 +103,7 @@ describe FollowingAccountsController do
 
         context 'when account hides their network' do
           before do
-            alice.user.settings.hide_network = true
+            alice.update(hide_collections: true)
           end
 
           it 'returns followers count' do
diff --git a/spec/presenters/familiar_followers_presenter_spec.rb b/spec/presenters/familiar_followers_presenter_spec.rb
new file mode 100644
index 000000000..17be4b971
--- /dev/null
+++ b/spec/presenters/familiar_followers_presenter_spec.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe FamiliarFollowersPresenter do
+  describe '#accounts' do
+    let(:account) { Fabricate(:account) }
+    let(:familiar_follower) { Fabricate(:account) }
+    let(:requested_accounts) { Fabricate.times(2, :account) }
+
+    subject { described_class.new(requested_accounts, account.id) }
+
+    before do
+      familiar_follower.follow!(requested_accounts.first)
+      account.follow!(familiar_follower)
+    end
+
+    it 'returns a result for each requested account' do
+      expect(subject.accounts.map(&:id)).to eq requested_accounts.map(&:id)
+    end
+
+    it 'returns followers you follow' do
+      result = subject.accounts.first
+
+      expect(result).to_not be_nil
+      expect(result.id).to eq requested_accounts.first.id
+      expect(result.accounts).to match_array([familiar_follower])
+    end
+
+    context 'when requested account hides followers' do
+      before do
+        requested_accounts.first.update(hide_collections: true)
+      end
+
+      it 'does not return followers you follow' do
+        result = subject.accounts.first
+
+        expect(result).to_not be_nil
+        expect(result.id).to eq requested_accounts.first.id
+        expect(result.accounts).to be_empty
+      end
+    end
+
+    context 'when familiar follower hides follows' do
+      before do
+        familiar_follower.update(hide_collections: true)
+      end
+
+      it 'does not return followers you follow' do
+        result = subject.accounts.first
+
+        expect(result).to_not be_nil
+        expect(result.id).to eq requested_accounts.first.id
+        expect(result.accounts).to be_empty
+      end
+    end
+  end
+end