From 2a7766dcc958ad18df761de50f9da5164f1a2e8f Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Sun, 28 Aug 2022 03:37:55 +0200
Subject: [PATCH] Add admin API for managing e-mail domain blocks (#19066)

---
 .../admin/email_domain_blocks_controller.rb   | 90 +++++++++++++++++++
 app/models/email_domain_block.rb              |  1 +
 .../admin/email_domain_block_serializer.rb    |  9 ++
 config/routes.rb                              |  1 +
 4 files changed, 101 insertions(+)
 create mode 100644 app/controllers/api/v1/admin/email_domain_blocks_controller.rb
 create mode 100644 app/serializers/rest/admin/email_domain_block_serializer.rb

diff --git a/app/controllers/api/v1/admin/email_domain_blocks_controller.rb b/app/controllers/api/v1/admin/email_domain_blocks_controller.rb
new file mode 100644
index 00000000000..ac16f70b05f
--- /dev/null
+++ b/app/controllers/api/v1/admin/email_domain_blocks_controller.rb
@@ -0,0 +1,90 @@
+# frozen_string_literal: true
+
+class Api::V1::Admin::EmailDomainBlocksController < Api::BaseController
+  include Authorization
+  include AccountableConcern
+
+  LIMIT = 100
+
+  before_action -> { authorize_if_got_token! :'admin:read', :'admin:read:email_domain_blocks' }, only: [:index, :show]
+  before_action -> { authorize_if_got_token! :'admin:write', :'admin:write:email_domain_blocks' }, except: [:index, :show]
+  before_action :set_email_domain_blocks, only: :index
+  before_action :set_email_domain_block, only: [:show, :destroy]
+
+  after_action :verify_authorized
+  after_action :insert_pagination_headers, only: :index
+
+  PAGINATION_PARAMS = %i(
+    limit
+  ).freeze
+
+  def create
+    authorize :email_domain_block, :create?
+
+    @email_domain_block = EmailDomainBlock.create!(resource_params)
+    log_action :create, @email_domain_block
+
+    render json: @email_domain_block, serializer: REST::Admin::EmailDomainBlockSerializer
+  end
+
+  def index
+    authorize :email_domain_block, :index?
+    render json: @email_domain_blocks, each_serializer: REST::Admin::EmailDomainBlockSerializer
+  end
+
+  def show
+    authorize @email_domain_block, :show?
+    render json: @email_domain_block, serializer: REST::Admin::EmailDomainBlockSerializer
+  end
+
+  def destroy
+    authorize @email_domain_block, :destroy?
+
+    @email_domain_block.destroy!
+    log_action :destroy, @email_domain_block
+
+    render json: @email_domain_block, serializer: REST::Admin::EmailDomainBlockSerializer
+  end
+
+  private
+
+  def set_email_domain_blocks
+    @email_domain_blocks = EmailDomainBlock.order(id: :desc).to_a_paginated_by_id(limit_param(LIMIT), params_slice(:max_id, :since_id, :min_id))
+  end
+
+  def set_email_domain_block
+    @email_domain_block = EmailDomainBlock.find(params[:id])
+  end
+
+  def resource_params
+    params.permit(:domain)
+  end
+
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def next_path
+    api_v1_admin_email_domain_blocks_url(pagination_params(max_id: pagination_max_id)) if records_continue?
+  end
+
+  def prev_path
+    api_v1_admin_email_domain_blocks_url(pagination_params(min_id: pagination_since_id)) unless @email_domain_blocks.empty?
+  end
+
+  def pagination_max_id
+    @email_domain_blocks.last.id
+  end
+
+  def pagination_since_id
+    @email_domain_blocks.first.id
+  end
+
+  def records_continue?
+    @email_domain_blocks.size == limit_param(LIMIT)
+  end
+
+  def pagination_params(core_params)
+    params.slice(*PAGINATION_PARAMS).permit(*PAGINATION_PARAMS).merge(core_params)
+  end
+end
diff --git a/app/models/email_domain_block.rb b/app/models/email_domain_block.rb
index 661f6727d1d..10a0e51020e 100644
--- a/app/models/email_domain_block.rb
+++ b/app/models/email_domain_block.rb
@@ -17,6 +17,7 @@ class EmailDomainBlock < ApplicationRecord
   )
 
   include DomainNormalizable
+  include Paginable
 
   belongs_to :parent, class_name: 'EmailDomainBlock', optional: true
   has_many :children, class_name: 'EmailDomainBlock', foreign_key: :parent_id, inverse_of: :parent, dependent: :destroy
diff --git a/app/serializers/rest/admin/email_domain_block_serializer.rb b/app/serializers/rest/admin/email_domain_block_serializer.rb
new file mode 100644
index 00000000000..a026ff680e7
--- /dev/null
+++ b/app/serializers/rest/admin/email_domain_block_serializer.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class REST::Admin::EmailDomainBlockSerializer < ActiveModel::Serializer
+  attributes :id, :domain, :created_at, :history
+
+  def id
+    object.id.to_s
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index 8694a643642..13a4a1618d0 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -591,6 +591,7 @@ Rails.application.routes.draw do
 
         resources :domain_allows, only: [:index, :show, :create, :destroy]
         resources :domain_blocks, only: [:index, :show, :update, :create, :destroy]
+        resources :email_domain_blocks, only: [:index, :show, :create, :destroy]
         resources :ip_blocks, only: [:index, :show, :update, :create, :destroy]
 
         namespace :trends do