Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/models/account_user.rb

@@ -0,0 +1,86 @@
+# == Schema Information
+#
+# Table name: account_users
+#
+#  id                       :bigint           not null, primary key
+#  active_at                :datetime
+#  auto_offline             :boolean          default(TRUE), not null
+#  availability             :integer          default("online"), not null
+#  role                     :integer          default("agent")
+#  created_at               :datetime         not null
+#  updated_at               :datetime         not null
+#  account_id               :bigint
+#  agent_capacity_policy_id :bigint
+#  custom_role_id           :bigint
+#  inviter_id               :bigint
+#  user_id                  :bigint
+#
+# Indexes
+#
+#  index_account_users_on_account_id                (account_id)
+#  index_account_users_on_agent_capacity_policy_id  (agent_capacity_policy_id)
+#  index_account_users_on_custom_role_id            (custom_role_id)
+#  index_account_users_on_user_id                   (user_id)
+#  uniq_user_id_per_account_id                      (account_id,user_id) UNIQUE
+#
+
+class AccountUser < ApplicationRecord
+  include AvailabilityStatusable
+
+  belongs_to :account
+  belongs_to :user
+  belongs_to :inviter, class_name: 'User', optional: true
+
+  enum role: { agent: 0, administrator: 1 }
+  enum availability: { online: 0, offline: 1, busy: 2 }
+
+  accepts_nested_attributes_for :account
+
+  after_create_commit :notify_creation, :create_notification_setting
+  after_destroy :notify_deletion, :remove_user_from_account
+  after_save :update_presence_in_redis, if: :saved_change_to_availability?
+
+  validates :user_id, uniqueness: { scope: :account_id }
+
+  def create_notification_setting
+    setting = user.notification_settings.new(account_id: account.id)
+    setting.selected_email_flags = [:email_conversation_assignment]
+    setting.selected_push_flags = [:push_conversation_assignment]
+    setting.save!
+  end
+
+  def remove_user_from_account
+    ::Agents::DestroyJob.perform_later(account, user)
+  end
+
+  def permissions
+    administrator? ? ['administrator'] : ['agent']
+  end
+
+  def push_event_data
+    {
+      id: id,
+      availability: availability,
+      role: role,
+      user_id: user_id
+    }
+  end
+
+  private
+
+  def notify_creation
+    Rails.configuration.dispatcher.dispatch(AGENT_ADDED, Time.zone.now, account: account)
+  end
+
+  def notify_deletion
+    Rails.configuration.dispatcher.dispatch(AGENT_REMOVED, Time.zone.now, account: account)
+  end
+
+  def update_presence_in_redis
+    OnlineStatusTracker.set_status(account.id, user.id, availability)
+  end
+end
+
+AccountUser.prepend_mod_with('AccountUser')
+AccountUser.include_mod_with('Audit::AccountUser')
+AccountUser.include_mod_with('Concerns::AccountUser')