Add moderation warnings (#9519)

* Add moderation warnings

Replace individual routes for disabling, silencing, and suspending
a user, as well as the report update route, with a unified account
action controller that allows you to select an action (none,
disable, silence, suspend) as well as whether it should generate an
e-mail notification with optional custom text. That notification,
with the optional custom text, is saved as a warning.

Additionally, there are warning presets you can configure to save
time when performing the above.

* Use Account#local_username_and_domain

31 files changed, 533 insertions, 197 deletions

diff --git a/app/controllers/admin/account_actions_controller.rb b/app/controllers/admin/account_actions_controller.rb
new file mode 100644
index 00000000000..e847495f1b8
--- /dev/null
+++ b/app/controllers/admin/account_actions_controller.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module Admin
+  class AccountActionsController < BaseController
+    before_action :set_account
+
+    def new
+      @account_action  = Admin::AccountAction.new(type: params[:type], report_id: params[:report_id], send_email_notification: true)
+      @warning_presets = AccountWarningPreset.all
+    end
+
+    def create
+      account_action                 = Admin::AccountAction.new(resource_params)
+      account_action.target_account  = @account
+      account_action.current_account = current_account
+
+      account_action.save!
+
+      if account_action.with_report?
+        redirect_to admin_report_path(account_action.report)
+      else
+        redirect_to admin_account_path(@account.id)
+      end
+    end
+
+    private
+
+    def set_account
+      @account = Account.find(params[:account_id])
+    end
+
+    def resource_params
+      params.require(:admin_account_action).permit(:type, :report_id, :warning_preset_id, :text, :send_email_notification)
+    end
+  end
+end
diff --git a/app/controllers/admin/account_moderation_notes_controller.rb b/app/controllers/admin/account_moderation_notes_controller.rb
index 7d5b9bf52c8..44f6e34f80b 100644
--- a/app/controllers/admin/account_moderation_notes_controller.rb
+++ b/app/controllers/admin/account_moderation_notes_controller.rb
@@ -14,6 +14,7 @@ module Admin
       else
         @account          = @account_moderation_note.target_account
         @moderation_notes = @account.targeted_moderation_notes.latest
+        @warnings         = @account.targeted_account_warnings.latest.custom
 
         render template: 'admin/accounts/show'
       end
diff --git a/app/controllers/admin/accounts_controller.rb b/app/controllers/admin/accounts_controller.rb
index 771302db807..10abd1e6aeb 100644
--- a/app/controllers/admin/accounts_controller.rb
+++ b/app/controllers/admin/accounts_controller.rb
@@ -2,9 +2,9 @@
 
 module Admin
   class AccountsController < BaseController
-    before_action :set_account, only: [:show, :subscribe, :unsubscribe, :redownload, :remove_avatar, :remove_header, :enable, :disable, :memorialize]
+    before_action :set_account, only: [:show, :subscribe, :unsubscribe, :redownload, :remove_avatar, :remove_header, :enable, :memorialize]
     before_action :require_remote_account!, only: [:subscribe, :unsubscribe, :redownload]
-    before_action :require_local_account!, only: [:enable, :disable, :memorialize]
+    before_action :require_local_account!, only: [:enable, :memorialize]
 
     def index
       authorize :account, :index?
@@ -13,8 +13,10 @@ module Admin
 
     def show
       authorize @account, :show?
+
       @account_moderation_note = current_account.account_moderation_notes.new(target_account: @account)
-      @moderation_notes = @account.targeted_moderation_notes.latest
+      @moderation_notes        = @account.targeted_moderation_notes.latest
+      @warnings                = @account.targeted_account_warnings.latest.custom
     end
 
     def subscribe
@@ -43,10 +45,17 @@ module Admin
       redirect_to admin_account_path(@account.id)
     end
 
-    def disable
-      authorize @account.user, :disable?
-      @account.user.disable!
-      log_action :disable, @account.user
+    def unsilence
+      authorize @account, :unsilence?
+      @account.unsilence!
+      log_action :unsilence, @account
+      redirect_to admin_account_path(@account.id)
+    end
+
+    def unsuspend
+      authorize @account, :unsuspend?
+      @account.unsuspend!
+      log_action :unsuspend, @account
       redirect_to admin_account_path(@account.id)
     end
 
diff --git a/app/controllers/admin/reports_controller.rb b/app/controllers/admin/reports_controller.rb
index e97ddb9b647..f138376b2f7 100644
--- a/app/controllers/admin/reports_controller.rb
+++ b/app/controllers/admin/reports_controller.rb
@@ -13,75 +13,42 @@ module Admin
       authorize @report, :show?
 
       @report_note  = @report.notes.new
-      @report_notes = (@report.notes.latest + @report.history).sort_by(&:created_at)
+      @report_notes = (@report.notes.latest + @report.history + @report.target_account.targeted_account_warnings.latest.custom).sort_by(&:created_at)
       @form         = Form::StatusBatch.new
     end
 
-    def update
+    def assign_to_self
       authorize @report, :update?
-      process_report
-
-      if @report.action_taken?
-        redirect_to admin_reports_path, notice: I18n.t('admin.reports.resolved_msg')
-      else
-        redirect_to admin_report_path(@report)
-      end
+      @report.update!(assigned_account_id: current_account.id)
+      log_action :assigned_to_self, @report
+      redirect_to admin_report_path(@report)
     end
 
-    private
-
-    def process_report
-      case params[:outcome].to_s
-      when 'assign_to_self'
-        @report.update!(assigned_account_id: current_account.id)
-        log_action :assigned_to_self, @report
-      when 'unassign'
-        @report.update!(assigned_account_id: nil)
-        log_action :unassigned, @report
-      when 'reopen'
-        @report.unresolve!
-        log_action :reopen, @report
-      when 'resolve'
-        @report.resolve!(current_account)
-        log_action :resolve, @report
-      when 'disable'
-        @report.resolve!(current_account)
-        @report.target_account.user.disable!
-
-        log_action :resolve, @report
-        log_action :disable, @report.target_account.user
-
-        resolve_all_target_account_reports
-      when 'silence'
-        @report.resolve!(current_account)
-        @report.target_account.update!(silenced: true)
-
-        log_action :resolve, @report
-        log_action :silence, @report.target_account
-
-        resolve_all_target_account_reports
-      else
-        raise ActiveRecord::RecordNotFound
-      end
-
-      @report.reload
+    def unassign
+      authorize @report, :update?
+      @report.update!(assigned_account_id: nil)
+      log_action :unassigned, @report
+      redirect_to admin_report_path(@report)
     end
 
-    def resolve_all_target_account_reports
-      unresolved_reports_for_target_account.update_all(action_taken: true, action_taken_by_account_id: current_account.id)
+    def reopen
+      authorize @report, :update?
+      @report.unresolve!
+      log_action :reopen, @report
+      redirect_to admin_report_path(@report)
     end
 
-    def unresolved_reports_for_target_account
-      Report.where(
-        target_account: @report.target_account
-      ).unresolved
+    def resolve
+      authorize @report, :update?
+      @report.resolve!(current_account)
+      log_action :resolve, @report
+      redirect_to admin_reports_path, notice: I18n.t('admin.reports.resolved_msg')
     end
 
+    private
+
     def filtered_reports
-      ReportFilter.new(filter_params).results.order(id: :desc).includes(
-        :account,
-        :target_account
-      )
+      ReportFilter.new(filter_params).results.order(id: :desc).includes(:account, :target_account)
     end
 
     def filter_params
diff --git a/app/controllers/admin/silences_controller.rb b/app/controllers/admin/silences_controller.rb
deleted file mode 100644
index 4c06a9c0cc7..00000000000
--- a/app/controllers/admin/silences_controller.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-# frozen_string_literal: true
-
-module Admin
-  class SilencesController < BaseController
-    before_action :set_account
-
-    def create
-      authorize @account, :silence?
-      @account.update!(silenced: true)
-      log_action :silence, @account
-      redirect_to admin_accounts_path
-    end
-
-    def destroy
-      authorize @account, :unsilence?
-      @account.update!(silenced: false)
-      log_action :unsilence, @account
-      redirect_to admin_accounts_path
-    end
-
-    private
-
-    def set_account
-      @account = Account.find(params[:account_id])
-    end
-  end
-end
diff --git a/app/controllers/admin/suspensions_controller.rb b/app/controllers/admin/suspensions_controller.rb
deleted file mode 100644
index f9bbf36fb84..00000000000
--- a/app/controllers/admin/suspensions_controller.rb
+++ /dev/null
@@ -1,60 +0,0 @@
-# frozen_string_literal: true
-
-module Admin
-  class SuspensionsController < BaseController
-    before_action :set_account
-
-    def new
-      @suspension = Form::AdminSuspensionConfirmation.new(report_id: params[:report_id])
-    end
-
-    def create
-      authorize @account, :suspend?
-
-      @suspension = Form::AdminSuspensionConfirmation.new(suspension_params)
-
-      if suspension_params[:acct] == @account.acct
-        resolve_report! if suspension_params[:report_id].present?
-        perform_suspend!
-        mark_reports_resolved!
-        redirect_to admin_accounts_path
-      else
-        flash.now[:alert] = I18n.t('admin.suspensions.bad_acct_msg')
-        render :new
-      end
-    end
-
-    def destroy
-      authorize @account, :unsuspend?
-      @account.unsuspend!
-      log_action :unsuspend, @account
-      redirect_to admin_accounts_path
-    end
-
-    private
-
-    def set_account
-      @account = Account.find(params[:account_id])
-    end
-
-    def suspension_params
-      params.require(:form_admin_suspension_confirmation).permit(:acct, :report_id)
-    end
-
-    def resolve_report!
-      report = Report.find(suspension_params[:report_id])
-      report.resolve!(current_account)
-      log_action :resolve, report
-    end
-
-    def perform_suspend!
-      @account.suspend!
-      Admin::SuspensionWorker.perform_async(@account.id)
-      log_action :suspend, @account
-    end
-
-    def mark_reports_resolved!
-      Report.where(target_account: @account).unresolved.update_all(action_taken: true, action_taken_by_account_id: current_account.id)
-    end
-  end
-end
diff --git a/app/controllers/admin/warning_presets_controller.rb b/app/controllers/admin/warning_presets_controller.rb
new file mode 100644
index 00000000000..37be842c5b0
--- /dev/null
+++ b/app/controllers/admin/warning_presets_controller.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module Admin
+  class WarningPresetsController < BaseController
+    before_action :set_warning_preset, except: [:index, :create]
+
+    def index
+      authorize :account_warning_preset, :index?
+
+      @warning_presets = AccountWarningPreset.all
+      @warning_preset  = AccountWarningPreset.new
+    end
+
+    def create
+      authorize :account_warning_preset, :create?
+
+      @warning_preset = AccountWarningPreset.new(warning_preset_params)
+
+      if @warning_preset.save
+        redirect_to admin_warning_presets_path
+      else
+        @warning_presets = AccountWarningPreset.all
+        render :index
+      end
+    end
+
+    def edit
+      authorize @warning_preset, :update?
+    end
+
+    def update
+      authorize @warning_preset, :update?
+
+      if @warning_preset.update(warning_preset_params)
+        redirect_to admin_warning_presets_path
+      else
+        render :edit
+      end
+    end
+
+    def destroy
+      authorize @warning_preset, :destroy?
+
+      @warning_preset.destroy!
+      redirect_to admin_warning_presets_path
+    end
+
+    private
+
+    def set_warning_preset
+      @warning_preset = AccountWarningPreset.find(params[:id])
+    end
+
+    def warning_preset_params
+      params.require(:account_warning_preset).permit(:text)
+    end
+  end
+end
diff --git a/app/helpers/admin/action_logs_helper.rb b/app/helpers/admin/action_logs_helper.rb
index 68cf8c75dda..359d60b60e2 100644
--- a/app/helpers/admin/action_logs_helper.rb
+++ b/app/helpers/admin/action_logs_helper.rb
@@ -23,6 +23,8 @@ module Admin::ActionLogsHelper
       link_to record.domain, "https://#{record.domain}"
     when 'Status'
       link_to record.account.acct, TagManager.instance.url_for(record)
+    when 'AccountWarning'
+      link_to record.target_account.acct, admin_account_path(record.target_account_id)
     end
   end
 
@@ -34,6 +36,7 @@ module Admin::ActionLogsHelper
       link_to attributes['domain'], "https://#{attributes['domain']}"
     when 'Status'
       tmp_status = Status.new(attributes.except('reblogs_count', 'favourites_count'))
+
       if tmp_status.account
         link_to tmp_status.account&.acct || "##{tmp_status.account_id}", admin_account_path(tmp_status.account_id)
       else
@@ -81,6 +84,8 @@ module Admin::ActionLogsHelper
       'envelope'
     when 'Status'
       'pencil'
+    when 'AccountWarning'
+      'warning'
     end
   end
 
@@ -104,6 +109,6 @@ module Admin::ActionLogsHelper
   private
 
   def opposite_verbs?(log)
-    %w(DomainBlock EmailDomainBlock).include?(log.target_type)
+    %w(DomainBlock EmailDomainBlock AccountWarning).include?(log.target_type)
   end
 end
diff --git a/app/javascript/images/icon_flag.svg b/app/javascript/images/icon_flag.svg
new file mode 100644
index 00000000000..3939c9d2b37
--- /dev/null
+++ b/app/javascript/images/icon_flag.svg
@@ -0,0 +1,4 @@
+<svg fill="#FFFFFF" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
+  <path d="M0 0h24v24H0z" fill="none"/>
+  <path d="M14.4 6L14 4H5v17h2v-7h5.6l.4 2h7V6z"/>
+</svg>
diff --git a/app/javascript/images/mailer/icon_warning.png b/app/javascript/images/mailer/icon_warning.png
new file mode 100644
index 00000000000..7baaac61cb8
--- /dev/null
+++ b/app/javascript/images/mailer/icon_warning.png
diff --git a/app/javascript/styles/mailer.scss b/app/javascript/styles/mailer.scss
index d83bd4d9604..74d1df8ed3e 100644
--- a/app/javascript/styles/mailer.scss
+++ b/app/javascript/styles/mailer.scss
@@ -426,6 +426,10 @@ h5 {
     background: $success-green;
   }
 
+  &.alert-icon td {
+    background: $error-red;
+  }
+
   img {
     max-width: 32px;
     width: 32px;
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index b6c771abf30..e8f33193235 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -542,6 +542,10 @@ a.name-tag,
     border-left-color: lighten($error-red, 12%);
   }
 
+  &.warning {
+    border-left-color: $gold-star;
+  }
+
   &__bubble {
     padding: 16px;
     padding-left: 14px;
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index aa76b4dfe40..8f3a4ab3aa2 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -78,4 +78,16 @@ class UserMailer < Devise::Mailer
       mail to: @resource.email, subject: I18n.t('user_mailer.backup_ready.subject')
     end
   end
+
+  def warning(user, warning)
+    @resource = user
+    @warning  = warning
+    @instance = Rails.configuration.x.local_domain
+
+    I18n.with_locale(@resource.locale || I18n.default_locale) do
+      mail to: @resource.email,
+           subject: I18n.t("user_mailer.warning.subject.#{@warning.action}", acct: "@#{user.account.local_username_and_domain}"),
+           reply_to: Setting.site_contact_email
+    end
+  end
 end
diff --git a/app/models/account.rb b/app/models/account.rb
index 5a7a9c580a0..16ef6c187a7 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -155,6 +155,14 @@ class Account < ApplicationRecord
     ResolveAccountService.new.call(acct)
   end
 
+  def silence!
+    update!(silenced: true)
+  end
+
+  def unsilence!
+    update!(silenced: false)
+  end
+
   def suspend!
     transaction do
       user&.disable! if local?
diff --git a/app/models/account_warning.rb b/app/models/account_warning.rb
new file mode 100644
index 00000000000..157e6c04d1e
--- /dev/null
+++ b/app/models/account_warning.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: account_warnings
+#
+#  id                :bigint(8)        not null, primary key
+#  account_id        :bigint(8)
+#  target_account_id :bigint(8)
+#  action            :integer          default("none"), not null
+#  text              :text             default(""), not null
+#  created_at        :datetime         not null
+#  updated_at        :datetime         not null
+#
+
+class AccountWarning < ApplicationRecord
+  enum action: %i(none disable silence suspend), _suffix: :action
+
+  belongs_to :account, inverse_of: :account_warnings
+  belongs_to :target_account, class_name: 'Account', inverse_of: :targeted_account_warnings
+
+  scope :latest, -> { order(created_at: :desc) }
+  scope :custom, -> { where.not(text: '') }
+end
diff --git a/app/models/account_warning_preset.rb b/app/models/account_warning_preset.rb
new file mode 100644
index 00000000000..ba8ceabb353
--- /dev/null
+++ b/app/models/account_warning_preset.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: account_warning_presets
+#
+#  id         :bigint(8)        not null, primary key
+#  text       :text             default(""), not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+
+class AccountWarningPreset < ApplicationRecord
+  validates :text, presence: true
+end
diff --git a/app/models/admin/account_action.rb b/app/models/admin/account_action.rb
new file mode 100644
index 00000000000..84c3f880d25
--- /dev/null
+++ b/app/models/admin/account_action.rb
@@ -0,0 +1,134 @@
+# frozen_string_literal: true
+
+class Admin::AccountAction
+  include ActiveModel::Model
+  include AccountableConcern
+  include Authorization
+
+  TYPES = %w(
+    none
+    disable
+    silence
+    suspend
+  ).freeze
+
+  attr_accessor :target_account,
+                :current_account,
+                :type,
+                :text,
+                :report_id,
+                :warning_preset_id,
+                :send_email_notification