Add preliminary work for many notification targets

app/models/concerns/foreman_notification_send/notification_extensions.rb

@@ -8,10 +8,18 @@ module ForemanNotificationSend
     end
 
     def send_notification
-      return unless Setting[:notification_send_enable]
+      if Setting[:notification_send_enable]
+        sender = SenderBase.create_sender(
+          backend: :matrix,
+          hs_url: Setting[:notification_send_target_url],
+          access_token: Setting[:notification_send_token],
+          room: Setting[:notification_send_target_room]
+        )
+        sender.send_notification(self)
+      end
 
-      sender = SenderBase.create_sender
-      sender.send_notification(self)
+      NotificationTarget.select { |target| target.should_send?(self) }
+                        .each { |target| target.send(self) }
     end
 
     def level_to_symbol

app/models/foreman_notification_send/notification_target.rb

+# frozen_string_literal: true
+
+module ForemanNotificationSend
+  class NotificationTarget < ApplicationRecord
+    before_validation do
+      backend = slugify_backend if backend
+    end
+    validate :validate_backend
+
+    def should_send?(notification)
+      # TODO: Filter
+    end
+    
+    def send(notification)
+      sender = SenderBase.create_sender(configuration.deep_symbolize_keys.merge(backend: slugify_backend))
+      sender.send_notification(notification)
+    end
+
+    def slugify_backend
+      backend.to_s.downcase.to_sym
+    end
+
+    def validate_backend
+      errors.add(:backend, 'is not a valid backend') if backend != :matrix
+    end
+  end
+end

app/services/foreman_notification_send/sender_base.rb

@@ -2,12 +2,12 @@
 
 module ForemanNotificationSend
   class SenderBase
-    def self.create_sender
-      SenderMatrix.new
-    end
+    def self.create_sender(backend:, **args)
+      return SenderMatrix.new(args) if backend == :matrix
 
-    def send_notification(_notification)
-      raise NotImplementedException
+      raise NotImplementedError, 'Only Matrix backend implemented at the moment'
     end
+
+    def send_notification(_notification); end
   end
 end

app/services/foreman_notification_send/sender_matrix.rb

@@ -3,9 +3,18 @@ require 'matrix_sdk/api'
 
 module ForemanNotificationSend
   class SenderMatrix < SenderBase
+    def initialize(hs_url:, access_token:, room:, msgtype: 'm.notice')
+      raise ArgumentError, 'access_token must be a Matrix room ID/Alias' unless access_token.is_a?(MXID) && access_token.room?
+
+      @hs_url = hs_url
+      @access_token = access_token
+      @room = room
+      @msgtype = msgtype
+    end
+
     def send_notification(notification)
       client.send_message_event(room, 'm.room.message',
-                                msgtype: 'm.notice',
+                                msgtype: @msgtype,
                                 body: notification.to_markdown,
                                 formatted_body: notification.to_html,
                                 format: 'org.matrix.custom.html')
@@ -14,13 +23,15 @@ module ForemanNotificationSend
     private
 
     def client
-      MatrixSdk::Api.new Setting[:notification_send_target_url], access_token: Setting[:notification_send_token]
+      #MatrixSdk::Api.new Setting[:notification_send_target_url], access_token: Setting[:notification_send_token]
+      MatrixSdk::Api.new @hs_url, access_token: @access_token
     end
 
     def room
       @room ||= begin
-        room = Setting[:notification_send_target_room]
-        room = client.join_room(room).room_id if room.start_with? '#'
+        room = @room
+        room = MatrixSdk::MXID.new(room) unless room.is_a? MatrixSdk::MXID
+        room = client.join_room(room).room_id if room.room_alias?
         room
       end
     end

db/migrate/20200414141644_add_notification_targets.rb

+class AddNotificationTargets < ActiveRecord::Migration[5.1]
+  def change
+    create_table :notification_targets do |t|
+      t.string :name, null: false, unique: true
+
+      t.string :backend, null: false
+      t.json :filter, null: false
+      t.json :configuration, null: false
+
+      t.timestamps null: false
+    end
+  end
+end
+