From e2f792b44b16069e001c7f6f746112bc29ee1922 Mon Sep 17 00:00:00 2001
From: seb-by-ouidou <sebastien.delcour@sebastien.delcour>
Date: Fri, 25 Aug 2023 20:53:30 +0000
Subject: [PATCH] FEAT: init admins group

---
 .../admins_group_manager_controller.rb        |  9 +++
 .../admins_groups_controller.rb               | 14 +++++
 app/controllers/application_controller.rb     | 26 ++++++++-
 .../admins_group_managers_controller.rb       |  4 ++
 .../manager/admins_groups_controller.rb       | 32 +++++++++++
 app/dashboards/admins_group_dashboard.rb      | 54 ++++++++++++++++++
 .../admins_group_manager_dashboard.rb         | 57 +++++++++++++++++++
 app/helpers/application_helper.rb             |  5 +-
 app/mailers/admins_group_mailer.rb            | 13 +++++
 app/mailers/user_mailer.rb                    | 11 ++++
 app/models/administrateur.rb                  |  1 +
 app/models/admins_group.rb                    | 30 ++++++++++
 app/models/admins_group_manager.rb            | 41 +++++++++++++
 app/models/user.rb                            | 19 +++++++
 ...tify_added_admins_group_managers.html.haml |  6 ++
 .../_breadcrumbs.html.haml                    | 16 ++++++
 .../admins_groups/index.html.haml             | 17 ++++++
 app/views/layouts/_account_dropdown.haml      |  5 ++
 app/views/manager/admins_groups/show.html.erb | 57 +++++++++++++++++++
 .../invite_admins_group_manager.html.haml     | 13 +++++
 config/env.example                            |  3 +
 config/locales/en.yml                         |  1 +
 config/locales/fr.yml                         |  1 +
 config/locales/models/admins_group/fr.yml     |  9 +++
 .../models/admins_group_manager/fr.yml        |  9 +++
 .../notify_added_admins_group_managers/en.yml |  4 ++
 .../notify_added_admins_group_managers/fr.yml |  4 ++
 .../views/layouts/_account_dropdown.en.yml    |  2 +
 .../views/layouts/_account_dropdown.fr.yml    |  2 +
 config/locales/views/manager/fr.yml           |  7 +++
 config/routes.rb                              | 19 +++++++
 ...0813091837_create_admins_group_managers.rb |  9 +++
 .../20230813091838_create_admins_groups.rb    | 15 +++++
 ...846_add_admins_group_to_administrateurs.rb |  7 +++
 ...ign_key_admins_group_to_administrateurs.rb |  5 ++
 ...ign_key_admins_group_to_administrateurs.rb |  5 ++
 db/schema.rb                                  | 26 +++++++++
 .../admins_group_manager_controller_spec.rb   | 12 ++++
 .../admins_groups_controller_spec.rb          | 23 ++++++++
 .../admins_group_managers_controller_spec.rb  | 25 ++++++++
 .../manager/admins_groups_controller_spec.rb  | 27 +++++++++
 spec/factories/admins_group.rb                |  5 ++
 spec/factories/admins_group_manager.rb        | 12 ++++
 spec/mailers/admins_group_mailer_spec.rb      | 16 ++++++
 .../previews/admins_group_mailer_preview.rb   | 14 +++++
 spec/mailers/previews/user_mailer_preview.rb  |  5 ++
 spec/models/administrateur_spec.rb            |  1 +
 spec/models/admins_group_manager_spec.rb      |  5 ++
 spec/models/admins_group_spec.rb              |  8 +++
 49 files changed, 708 insertions(+), 3 deletions(-)
 create mode 100644 app/controllers/admins_group_managers/admins_group_manager_controller.rb
 create mode 100644 app/controllers/admins_group_managers/admins_groups_controller.rb
 create mode 100644 app/controllers/manager/admins_group_managers_controller.rb
 create mode 100644 app/controllers/manager/admins_groups_controller.rb
 create mode 100644 app/dashboards/admins_group_dashboard.rb
 create mode 100644 app/dashboards/admins_group_manager_dashboard.rb
 create mode 100644 app/mailers/admins_group_mailer.rb
 create mode 100644 app/models/admins_group.rb
 create mode 100644 app/models/admins_group_manager.rb
 create mode 100644 app/views/admins_group_mailer/notify_added_admins_group_managers.html.haml
 create mode 100644 app/views/admins_group_managers/_breadcrumbs.html.haml
 create mode 100644 app/views/admins_group_managers/admins_groups/index.html.haml
 create mode 100644 app/views/manager/admins_groups/show.html.erb
 create mode 100644 app/views/user_mailer/invite_admins_group_manager.html.haml
 create mode 100644 config/locales/models/admins_group/fr.yml
 create mode 100644 config/locales/models/admins_group_manager/fr.yml
 create mode 100644 config/locales/views/admins_group_mailer/notify_added_admins_group_managers/en.yml
 create mode 100644 config/locales/views/admins_group_mailer/notify_added_admins_group_managers/fr.yml
 create mode 100644 config/locales/views/manager/fr.yml
 create mode 100644 db/migrate/20230813091837_create_admins_group_managers.rb
 create mode 100644 db/migrate/20230813091838_create_admins_groups.rb
 create mode 100644 db/migrate/20230813091846_add_admins_group_to_administrateurs.rb
 create mode 100644 db/migrate/20230813091847_add_foreign_key_admins_group_to_administrateurs.rb
 create mode 100644 db/migrate/20230813091848_validate_foreign_key_admins_group_to_administrateurs.rb
 create mode 100644 spec/controllers/admins_group_managers/admins_group_manager_controller_spec.rb
 create mode 100644 spec/controllers/admins_group_managers/admins_groups_controller_spec.rb
 create mode 100644 spec/controllers/manager/admins_group_managers_controller_spec.rb
 create mode 100644 spec/controllers/manager/admins_groups_controller_spec.rb
 create mode 100644 spec/factories/admins_group.rb
 create mode 100644 spec/factories/admins_group_manager.rb
 create mode 100644 spec/mailers/admins_group_mailer_spec.rb
 create mode 100644 spec/mailers/previews/admins_group_mailer_preview.rb
 create mode 100644 spec/models/admins_group_manager_spec.rb
 create mode 100644 spec/models/admins_group_spec.rb

diff --git a/app/controllers/admins_group_managers/admins_group_manager_controller.rb b/app/controllers/admins_group_managers/admins_group_manager_controller.rb
new file mode 100644
index 000000000..fad6629e3
--- /dev/null
+++ b/app/controllers/admins_group_managers/admins_group_manager_controller.rb
@@ -0,0 +1,9 @@
+module AdminsGroupManagers
+  class AdminsGroupManagerController < ApplicationController
+    before_action :authenticate_admins_group_manager!
+
+    def nav_bar_profile
+      :admins_group_manager
+    end
+  end
+end
diff --git a/app/controllers/admins_group_managers/admins_groups_controller.rb b/app/controllers/admins_group_managers/admins_groups_controller.rb
new file mode 100644
index 000000000..3e599883a
--- /dev/null
+++ b/app/controllers/admins_group_managers/admins_groups_controller.rb
@@ -0,0 +1,14 @@
+module AdminsGroupManagers
+  class AdminsGroupsController < AdminsGroupManagerController
+    def index
+      @admins_groups = admins_groups
+    end
+
+    private
+
+    def admins_groups
+      admins_group_ids = current_admins_group_manager.admins_group_ids
+      AdminsGroup.where(id: admins_group_ids.compact.uniq)
+    end
+  end
+end
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 4933ea04d..b95db7663 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -21,7 +21,8 @@ class ApplicationController < ActionController::Base
   around_action :switch_locale
 
   helper_method :multiple_devise_profile_connect?, :instructeur_signed_in?, :current_instructeur, :current_expert, :expert_signed_in?,
-    :administrateur_signed_in?, :current_administrateur, :current_account, :localization_enabled?, :set_locale, :current_expert_not_instructeur?
+    :administrateur_signed_in?, :current_administrateur, :current_account, :localization_enabled?, :set_locale, :current_expert_not_instructeur?,
+    :admins_group_manager_signed_in?, :current_admins_group_manager
 
   before_action do
     Current.request_id = request.uuid
@@ -37,9 +38,12 @@ class ApplicationController < ActionController::Base
   def multiple_devise_profile_connect?
     user_signed_in? && instructeur_signed_in? ||
         instructeur_signed_in? && administrateur_signed_in? ||
+        instructeur_signed_in? && admins_group_manager_signed_in? ||
         instructeur_signed_in? && expert_signed_in? ||
         user_signed_in? && administrateur_signed_in? ||
-        user_signed_in? && expert_signed_in?
+        user_signed_in? && admins_group_manager_signed_in? ||
+        user_signed_in? && expert_signed_in? ||
+        administrateur_signed_in? && admins_group_manager_signed_in?
   end
 
   def current_instructeur
@@ -58,6 +62,14 @@ class ApplicationController < ActionController::Base
     current_administrateur.present?
   end
 
+  def current_admins_group_manager
+    current_user&.admins_group_manager
+  end
+
+  def admins_group_manager_signed_in?
+    current_admins_group_manager.present?
+  end
+
   def current_expert
     current_user&.expert
   end
@@ -72,6 +84,7 @@ class ApplicationController < ActionController::Base
 
   def current_account
     {
+      admins_group_manager: current_admins_group_manager,
       administrateur: current_administrateur,
       instructeur: current_instructeur,
       user: current_user
@@ -115,6 +128,8 @@ class ApplicationController < ActionController::Base
       authenticate_expert!
     elsif administrateur_signed_in?
       authenticate_administrateur!
+    elsif admins_group_manager_signed_in?
+      authenticate_admins_group_manager!
     else
       authenticate_user!
     end
@@ -144,6 +159,12 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  def authenticate_admins_group_manager!
+    if !admins_group_manager_signed_in?
+      redirect_to new_user_session_path
+    end
+  end
+
   def after_sign_out_path_for(_resource_or_scope)
     stored_location_for(:user) || super
   end
@@ -178,6 +199,7 @@ class ApplicationController < ActionController::Base
         current_user,
         current_instructeur,
         current_administrateur,
+        current_admins_group_manager,
         current_super_admin
       ].compact.map { |role| role.class.name }
 
diff --git a/app/controllers/manager/admins_group_managers_controller.rb b/app/controllers/manager/admins_group_managers_controller.rb
new file mode 100644
index 000000000..f580748e1
--- /dev/null
+++ b/app/controllers/manager/admins_group_managers_controller.rb
@@ -0,0 +1,4 @@
+module Manager
+  class AdminsGroupManagersController < Manager::ApplicationController
+  end
+end
diff --git a/app/controllers/manager/admins_groups_controller.rb b/app/controllers/manager/admins_groups_controller.rb
new file mode 100644
index 000000000..ebb92784c
--- /dev/null
+++ b/app/controllers/manager/admins_groups_controller.rb
@@ -0,0 +1,32 @@
+module Manager
+  class AdminsGroupsController < Manager::ApplicationController
+    def add_admins_group_manager
+      emails = (params['emails'].presence || '').split(',').to_json
+      emails = JSON.parse(emails).map { EmailSanitizableConcern::EmailSanitizer.sanitize(_1) }
+
+      admins_group_managers, invalid_emails = admins_group.add_admins_group_managers(emails:)
+
+      if invalid_emails.present?
+        flash[:alert] = t('.wrong_address',
+          count: invalid_emails.size,
+          emails: invalid_emails)
+      end
+
+      if admins_group_managers.present?
+        flash[:notice] = "Les gestionnaires ont bien été affectés au groupe d'administrateurs"
+
+        AdminsGroupMailer
+          .notify_added_admins_group_managers(admins_group, admins_group_managers, current_super_admin.email)
+          .deliver_later
+      end
+
+      redirect_to manager_admins_groups_path(admins_group)
+    end
+
+    private
+
+    def admins_group
+      @admins_group ||= AdminsGroup.find(params[:id])
+    end
+  end
+end
diff --git a/app/dashboards/admins_group_dashboard.rb b/app/dashboards/admins_group_dashboard.rb
new file mode 100644
index 000000000..223d15a43
--- /dev/null
+++ b/app/dashboards/admins_group_dashboard.rb
@@ -0,0 +1,54 @@
+require "administrate/base_dashboard"
+
+class AdminsGroupDashboard < Administrate::BaseDashboard
+  # ATTRIBUTE_TYPES
+  # a hash that describes the type of each of the model's fields.
+  #
+  # Each different type represents an Administrate::Field object,
+  # which determines how the attribute is displayed
+  # on pages throughout the dashboard.
+  ATTRIBUTE_TYPES = {
+    id: Field::Number,
+    name: Field::String,
+    created_at: Field::DateTime,
+    updated_at: Field::DateTime,
+    admins_group_managers: Field::HasMany,
+    administrateurs: Field::HasMany
+  }.freeze
+
+  # COLLECTION_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's index page.
+  #
+  # By default, it's limited to four items to reduce clutter on index pages.
+  # Feel free to add, remove, or rearrange items.
+  COLLECTION_ATTRIBUTES = [
+    :id,
+    :created_at,
+    :name,
+    :admins_group_managers,
+    :administrateurs
+  ].freeze
+
+  # SHOW_PAGE_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's show page.
+  SHOW_PAGE_ATTRIBUTES = [
+    :admins_group_managers,
+    :administrateurs,
+    :id,
+    :created_at
+  ].freeze
+
+  # FORM_ATTRIBUTES
+  # an array of attributes that will be displayed
+  # on the model's form (`new` and `edit`) pages.
+  FORM_ATTRIBUTES = [
+    :name
+  ].freeze
+
+  # Overwrite this method to customize how users are displayed
+  # across all pages of the admin dashboard.
+  #
+  def display_resource(admins_group)
+    admins_group.name
+  end
+end
diff --git a/app/dashboards/admins_group_manager_dashboard.rb b/app/dashboards/admins_group_manager_dashboard.rb
new file mode 100644
index 000000000..09a8c8c20
--- /dev/null
+++ b/app/dashboards/admins_group_manager_dashboard.rb
@@ -0,0 +1,57 @@
+require "administrate/base_dashboard"
+
+class AdminsGroupManagerDashboard < Administrate::BaseDashboard
+  # ATTRIBUTE_TYPES
+  # a hash that describes the type of each of the model's fields.
+  #
+  # Each different type represents an Administrate::Field object,
+  # which determines how the attribute is displayed
+  # on pages throughout the dashboard.
+  ATTRIBUTE_TYPES = {
+    id: Field::Number,
+    user: Field::HasOne.with_options(searchable: true, searchable_field: 'email'),
+    created_at: Field::DateTime,
+    updated_at: Field::DateTime,
+    admins_groups: Field::HasMany.with_options(limit: 20),
+    registration_state: Field::String.with_options(searchable: false),
+    email: Field::Email.with_options(searchable: false)
+  }.freeze
+
+  # COLLECTION_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's index page.
+  #
+  # By default, it's limited to four items to reduce clutter on index pages.
+  # Feel free to add, remove, or rearrange items.
+  COLLECTION_ATTRIBUTES = [
+    :id,
+    :user,
+    :created_at,
+    :admins_groups,
+    :registration_state
+  ].freeze
+
+  # SHOW_PAGE_ATTRIBUTES
+  # an array of attributes that will be displayed on the model's show page.
+  SHOW_PAGE_ATTRIBUTES = [
+    :id,
+    :user,
+    :created_at,
+    :updated_at,
+    :registration_state,
+    :admins_groups
+  ].freeze
+
+  # FORM_ATTRIBUTES
+  # an array of attributes that will be displayed
+  # on the model's form (`new` and `edit`) pages.
+  FORM_ATTRIBUTES = [
+    :email
+  ].freeze
+
+  # Overwrite this method to customize how users are displayed
+  # across all pages of the admin dashboard.
+  #
+  def display_resource(admins_group_manager)
+    admins_group_manager.email
+  end
+end
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 061a6c957..974a2aac1 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -47,7 +47,8 @@ module ApplicationHelper
   def current_email
     current_user&.email ||
       current_instructeur&.email ||
-      current_administrateur&.email
+      current_administrateur&.email ||
+      current_admins_group_manager&.email
   end
 
   def staging?
@@ -77,6 +78,8 @@ module ApplicationHelper
     case nav_bar_profile
     when :administrateur
       [admin_procedures_path, t("admin", scope: "layouts.root_path_link_title")]
+    when :admins_group_manager
+      [admins_group_manager_admins_groups_path, t("admins_group_manager", scope: "layouts.root_path_link_title")]
     when :instructeur
       [instructeur_procedures_path, t("instructeur", scope: "layouts.root_path_link_title")]
     when :user
diff --git a/app/mailers/admins_group_mailer.rb b/app/mailers/admins_group_mailer.rb
new file mode 100644
index 000000000..03e552a1b
--- /dev/null
+++ b/app/mailers/admins_group_mailer.rb
@@ -0,0 +1,13 @@
+class AdminsGroupMailer < ApplicationMailer
+  layout 'mailers/layout'
+
+  def notify_added_admins_group_managers(admins_group, added_admins_group_managers, current_super_admin_email)
+    added_admins_group_manager_emails = added_admins_group_managers.map(&:email)
+    @admins_group = admins_group
+    @current_super_admin_email = current_super_admin_email
+
+    subject = "Vous avez été ajouté(e) en tant que gestionnaire du groupe d'administrateur \"#{admins_group.name}\""
+
+    mail(bcc: added_admins_group_manager_emails, subject: subject)
+  end
+end
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index b7e293aed..4304dfce5 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -38,6 +38,17 @@ class UserMailer < ApplicationMailer
       reply_to: CONTACT_EMAIL)
   end
 
+  def invite_admins_group_manager(user, reset_password_token, admins_group)
+    @reset_password_token = reset_password_token
+    @user = user
+    @admins_group = admins_group
+    subject = "Activez votre compte gestionnaire"
+
+    mail(to: user.email,
+      subject: subject,
+      reply_to: CONTACT_EMAIL)
+  end
+
   def send_archive(administrateur_or_instructeur, procedure, archive)
     @archive = archive
     @procedure = procedure
diff --git a/app/models/administrateur.rb b/app/models/administrateur.rb
index 1c68711c0..73904ae39 100644
--- a/app/models/administrateur.rb
+++ b/app/models/administrateur.rb
@@ -9,6 +9,7 @@ class Administrateur < ApplicationRecord
   has_and_belongs_to_many :default_zones, class_name: 'Zone', join_table: 'default_zones_administrateurs'
 
   belongs_to :user
+  belongs_to :admins_group, optional: true
 
   default_scope { eager_load(:user) }
 
diff --git a/app/models/admins_group.rb b/app/models/admins_group.rb
new file mode 100644
index 000000000..e828e419b
--- /dev/null
+++ b/app/models/admins_group.rb
@@ -0,0 +1,30 @@
+class AdminsGroup < ApplicationRecord
+  belongs_to :admins_group, optional: true # parent
+  has_many :children, class_name: "AdminsGroup", inverse_of: :admins_group
+  has_many :administrateurs
+  has_and_belongs_to_many :admins_group_managers
+
+  def add(admins_group_manager)
+    admins_group_managers << admins_group_manager
+  end
+
+  def add_admins_group_managers(ids: [], emails: [])
+    admins_group_managers_to_add, valid_emails, invalid_emails = AdminsGroupManager.find_all_by_identifier_with_emails(ids:, emails:)
+    not_found_emails = valid_emails - admins_group_managers_to_add.map(&:email)
+
+    # Send invitations to users without account
+    if not_found_emails.present?
+      admins_group_managers_to_add += not_found_emails.map do |email|
+        user = User.create_or_promote_to_admins_group_manager(email, SecureRandom.hex)
+        user.invite_admins_group_manager!(self)
+        user.admins_group_manager
+      end
+    end
+
+    # We dont't want to assign a user to an admins_group if they are already assigned to it
+    admins_group_managers_to_add -= admins_group_managers
+    admins_group_managers_to_add.each { add(_1) }
+
+    [admins_group_managers_to_add, invalid_emails]
+  end
+end
diff --git a/app/models/admins_group_manager.rb b/app/models/admins_group_manager.rb
new file mode 100644
index 000000000..cb11b1bd3
--- /dev/null
+++ b/app/models/admins_group_manager.rb
@@ -0,0 +1,41 @@
+class AdminsGroupManager < ApplicationRecord
+  has_and_belongs_to_many :admins_groups
+
+  belongs_to :user
+
+  delegate :email, to: :user
+
+  default_scope { eager_load(:user) }
+
+  def self.by_email(email)
+    find_by(users: { email: email })
+  end
+
+  def self.find_all_by_identifier(ids: [], emails: [])
+    find_all_by_identifier_with_emails(ids:, emails:).first
+  end
+
+  def self.find_all_by_identifier_with_emails(ids: [], emails: [])
+    valid_emails, invalid_emails = emails.partition { URI::MailTo::EMAIL_REGEXP.match?(_1) }
+
+    [
+      where(id: ids).or(where(users: { email: valid_emails })).distinct(:id),
+      valid_emails,
+      invalid_emails
+    ]
+  end
+
+  def can_be_deleted?
+    !(root_admins_group = admins_groups.where(admins_group: nil).first) || root_admins_group.admins_group_managers.size > 1
+  end
+
+  def registration_state
+    if user.active?
+      'Actif'
+    elsif user.reset_password_period_valid?
+      'En attente'
+    else
+      'Expiré'
+    end
+  end
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 9aabfe35f..25c08fb4e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -26,6 +26,7 @@ class User < ApplicationRecord
   has_one :france_connect_information, dependent: :destroy
   has_one :instructeur, dependent: :destroy
   has_one :administrateur, dependent: :destroy
+  has_one :admins_group_manager, dependent: :destroy
   has_one :expert, dependent: :destroy
   belongs_to :requested_merge_into, class_name: 'User', optional: true
 
@@ -76,6 +77,10 @@ class User < ApplicationRecord
     UserMailer.invite_instructeur(self, set_reset_password_token).deliver_later
   end
 
+  def invite_admins_group_manager!(admins_group)
+    UserMailer.invite_admins_group_manager(self, set_reset_password_token, admins_group).deliver_later
+  end
+
   def invite_administrateur!(administration_id)
     AdministrationMailer.invite_admin(self, set_reset_password_token, administration_id).deliver_later
   end
@@ -103,6 +108,16 @@ class User < ApplicationRecord
     user
   end
 
+  def self.create_or_promote_to_admins_group_manager(email, password)
+    user = User.create_or_promote_to_administrateur(email, password)
+
+    if user.valid? && user.admins_group_manager.nil?
+      user.create_admins_group_manager!
+    end
+
+    user
+  end
+
   def self.create_or_promote_to_administrateur(email, password)
     user = User.create_or_promote_to_instructeur(email, password)
 
@@ -145,6 +160,10 @@ class User < ApplicationRecord
     instructeur.present?
   end
 
+  def admins_group_manager?
+    admins_group_manager.present?
+  end
+
   def expert?
     expert.present?
   end
diff --git a/app/views/admins_group_mailer/notify_added_admins_group_managers.html.haml b/app/views/admins_group_mailer/notify_added_admins_group_managers.html.haml
new file mode 100644
index 000000000..40c1190a3
--- /dev/null
+++ b/app/views/admins_group_mailer/notify_added_admins_group_managers.html.haml
@@ -0,0 +1,6 @@
+%p= t(:hello, scope: [:views, :shared, :greetings])
+
+%p
+  = t(".email_body", admins_group_name: @admins_group.name, email: @current_super_admin_email, application_name: APPLICATION_NAME)
+
+= render partial: "layouts/mailers/signature"
diff --git a/app/views/admins_group_managers/_breadcrumbs.html.haml b/app/views/admins_group_managers/_breadcrumbs.html.haml
new file mode 100644
index 000000000..2aee56b39
--- /dev/null
+++ b/app/views/admins_group_managers/_breadcrumbs.html.haml
@@ -0,0 +1,16 @@
+#breadcrumbs.sub-header
+  .fr-container.flex.justify-between.align-baseline.column
+    %nav.fr-breadcrumb.mt-0{ role: "navigation", aria: { label: t('you_are_here', scope: [:layouts, :breadcrumb]) } }
+      %button.fr-breadcrumb__button{ aria: { expanded: "false", controls: "breadcrumb-1" } }
+        = t('show', scope: [:layouts, :breadcrumb])
+
+      .fr-collapse#breadcrumb-1
+        %ol.fr-breadcrumb__list
+          %li= link_to t('root', scope: [:layouts, :breadcrumb]), root_path, class: 'fr-breadcrumb__link'
+
+          - steps.each.with_index do |step, i|
+            - if i == steps.size - 1
+              %li{ aria: { current: "page" } }
+                %span.fr-breadcrumb__link= step[0]
+            - else
+              %li= link_to step[0], step[1], class: 'fr-breadcrumb__link'
diff --git a/app/views/admins_group_managers/admins_groups/index.html.haml b/app/views/admins_group_managers/admins_groups/index.html.haml
new file mode 100644
index 000000000..fc9fb0924
--- /dev/null
+++ b/app/views/admins_group_managers/admins_groups/index.html.haml
@@ -0,0 +1,17 @@
+= render partial: 'admins_group_managers/breadcrumbs',
+  locals: { steps: [['Groupes d\'administrateurs', admins_group_manager_admins_groups_path]] }
+
+#admins_groups-index.container
+  %h1.fr-h1 Liste des groupes d'administrateurs
+
+  %table.fr-table.width-100.mt-3
+    %thead
+      %tr
+        %th{ scope: "col" }
+          Nom
+
+    %tbody
+      - @admins_groups.each do |admins_group|
+        %tr
+          %td
+            = admins_group.name
diff --git a/app/views/layouts/_account_dropdown.haml b/app/views/layouts/_account_dropdown.haml
index cd76068ff..bfcd975d6 100644
--- a/app/views/layouts/_account_dropdown.haml
+++ b/app/views/layouts/_account_dropdown.haml
@@ -30,6 +30,11 @@
               = link_to admin_procedures_path, class: "fr-nav__link" do
                 %span.fr-icon-refresh-line.fr-icon--sm
                 = t('go_admin', scope: [:layouts])
+          - if admins_group_manager_signed_in? && nav_bar_profile != :admins_group_manager
+            %li
+              = link_to admins_group_manager_admins_groups_path, class: "fr-nav__link" do
+                %span.fr-icon-refresh-line.fr-icon--sm
+                = t('go_admins_group_manager', scope: [:layouts])
 
         - if super_admin_signed_in?
           %li
diff --git a/app/views/manager/admins_groups/show.html.erb b/app/views/manager/admins_groups/show.html.erb
new file mode 100644
index 000000000..e7e777c31
--- /dev/null
+++ b/app/views/manager/admins_groups/show.html.erb
@@ -0,0 +1,57 @@
+<%#
+# Show
+
+This view is the template for the show page.
+It renders the attributes of a resource,
+as well as a link to its edit page.
+
+## Local variables:
+
+- `page`:
+  An instance of [Administrate::Page::Show][1].
+  Contains methods for accessing the resource to be displayed on the page,
+  as well as helpers for describing how each attribute of the resource
+  should be displayed.
+
+[1]: http://www.rubydoc.info/gems/administrate/Administrate/Page/Show
+%>
+<% content_for(:title) { t("administrate.actions.show_resource", name: page.page_title) } %>
+<% admins_group = page.resource %>
+
+<header class="main-content__header" role="banner">
+  <h1 class="main-content__page-title">
+    <%= content_for(:title) %>
+  </h1>
+
+  <div>
+    <%= link_to(
+      t("administrate.actions.edit_resource", name: page.page_title),
+      [:edit, namespace, page.resource],
+      class: "button",
+    ) if valid_action? :edit %>
+  </div>
+
+</header>
+
+<section class="main-content__body">
+  <dl>
+    <% page.attributes.each do |attribute| %>
+      <dt class="attribute-label" id="<%= attribute.name %>">
+      <%= t(
+        "helpers.label.#{resource_name}.#{attribute.name}",
+        default: attribute.name.titleize,
+      ) %>
+      </dt>
+
+      <dd class="attribute-data attribute-data--<%=attribute.html_class%>">
+        <%= render_field attribute, page: page %>
+        <% if attribute.name == 'admins_group_managers' %>
+          <%= form_tag(add_admins_group_manager_manager_admins_group_path(admins_group), style: 'margin-top: 1rem;') do %>
+            <%= email_field_tag(:emails, '', placeholder: 'Emails', autocapitalize: 'off', autocorrect: 'off', spellcheck: 'false', style: 'margin-bottom: 1rem;width:24rem;') %>
+            <button>Ajouter un gestionnaire</button>
+          <% end %>
+        <% end %>
+      </dd>
+    <% end %>
+  </dl>
+</section>
diff --git a/app/views/user_mailer/invite_admins_group_manager.html.haml b/app/views/user_mailer/invite_admins_group_manager.html.haml
new file mode 100644
index 000000000..879f9898f
--- /dev/null
+++ b/app/views/user_mailer/invite_admins_group_manager.html.haml
@@ -0,0 +1,13 @@
+- content_for(:title, 'Activation de votre compte gestionnaire')
+
+%p
+  Bonjour,
+
+%p
+  Vous venez d’être nommé gestionnaire du groupe #{@admins_group.name} sur #{APPLICATION_NAME}.
+
+%p
+  Votre compte a été créé pour l'adresse email #{@user.email}. Pour l’activer, nous vous invitons à cliquer sur le lien suivant : 
+  = link_to(users_activate_url(token: @reset_password_token), users_activate_url(token: @reset_password_token))
+
+= render partial: "layouts/mailers/signature"
diff --git a/config/env.example b/config/env.example
index a3624b572..05277a328 100644
--- a/config/env.example
+++ b/config/env.example
@@ -155,3 +155,6 @@ CLAMAV_ENABLED="disabled"
 
 # Siret number used for API Entreprise, by default we use SIRET from dinum
 API_ENTREPRISE_DEFAULT_SIRET="put_your_own_siret"
+
+# Admins group usage (gestionnaire de groupes d'administrateurs)
+ADMINS_GROUP_ENABLED="disabled"
\ No newline at end of file
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 50e4b11f9..15da4b231 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -101,6 +101,7 @@ en:
       user: 'Go to files list'
       instructeur: 'Go to procedures list'
       admin: 'Go to administration panel'
+      admins_group_manager: "Aller admins group panel"
   views:
     legal_notice:
       title: "Legal Notices"
diff --git a/config/locales/fr.yml b/config/locales/fr.yml
index 26fe87ff1..aa6d6fb5f 100644
--- a/config/locales/fr.yml
+++ b/config/locales/fr.yml
@@ -92,6 +92,7 @@ fr:
       user: 'Aller à la liste des dossiers'
       instructeur: 'Aller à la liste des démarches'
       admin: "Aller au panneau d’administration"
+      admins_group_manager: "Aller au panneau de gestionnaire"
   views:
     legal_notice:
       title: "Mentions légales"
diff --git a/config/locales/models/admins_group/fr.yml b/config/locales/models/admins_group/fr.yml
new file mode 100644
index 000000000..4aeb8b4ba
--- /dev/null
+++ b/config/locales/models/admins_group/fr.yml
@@ -0,0 +1,9 @@
+fr:
+  activerecord:
+    attributes:
+      admins_group:
+        admins_group_managers: Gestionnaires
+    models:
+      admins_group:
+        one: Groupe d'administrateurs
+        other: Groupes d'administrateurs
diff --git a/config/locales/models/admins_group_manager/fr.yml b/config/locales/models/admins_group_manager/fr.yml
new file mode 100644
index 000000000..c6d9b2293
--- /dev/null
+++ b/config/locales/models/admins_group_manager/fr.yml
@@ -0,0 +1,9 @@
+fr:
+  activerecord:
+    attributes:
+      admins_group_manager:
+        admins_groups: Groupes
+    models:
+      admins_group_manager:
+        one: Gestionnaire
+        other: Gestionnaires
diff --git a/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/en.yml b/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/en.yml
new file mode 100644
index 000000000..95528051d
--- /dev/null
+++ b/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/en.yml
@@ -0,0 +1,4 @@
+en:
+  admins_group_mailer:
+    notify_added_admins_group_managers:
+      email_body: "You were assigned as manager on the admins group %{admins_group_name} on %{application_name} by « %{email} »"
diff --git a/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/fr.yml b/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/fr.yml
new file mode 100644
index 000000000..f63b8007c
--- /dev/null
+++ b/config/locales/views/admins_group_mailer/notify_added_admins_group_managers/fr.yml
@@ -0,0 +1,4 @@
+fr:
+  admins_group_mailer:
+    notify_added_admins_group_managers:
+      email_body: "Vous venez d’être nommé gestionnaire du groupe %{admins_group_name} sur %{application_name} par « %{email} »."
diff --git a/config/locales/views/layouts/_account_dropdown.en.yml b/config/locales/views/layouts/_account_dropdown.en.yml
index b9925c6f7..b4ec8ff11 100644
--- a/config/locales/views/layouts/_account_dropdown.en.yml
+++ b/config/locales/views/layouts/_account_dropdown.en.yml
@@ -8,12 +8,14 @@ en:
     go_instructor: "Switch to instructor"
     go_expert: "Switch to expert"
     go_admin: "Switch to administrator"
+    go_admins_group_manager: "Switch to admins group manager"
     profile: "See my profile"
     logout: "Log out"
     my_account: "My account"
     connected_as: "connected as %{profile}"
     instructeur: instructor
     administrateur: admin
+    admins_group_manager: admins group manager
     expert: expert
     user: user
     guest: guest
diff --git a/config/locales/views/layouts/_account_dropdown.fr.yml b/config/locales/views/layouts/_account_dropdown.fr.yml
index bbdba1e9e..4a83e1dc2 100644
--- a/config/locales/views/layouts/_account_dropdown.fr.yml
+++ b/config/locales/views/layouts/_account_dropdown.fr.yml
@@ -8,12 +8,14 @@ fr:
     go_instructor: "Passer en instructeur"
     go_expert: "Passer en expert"
     go_admin: "Passer en administrateur"
+    go_admins_group_manager: "Passer en gestionnaire"
     profile: "Voir mon profil"
     logout: "Se déconnecter"
     my_account: "Mon compte"
     connected_as: "connecté en tant qu’%{profile}"
     instructeur: instructeur
     administrateur: administrateur
+    admins_group_manager: gestionnaire
     expert: expert
     user: usager
     guest: invité
diff --git a/config/locales/views/manager/fr.yml b/config/locales/views/manager/fr.yml
new file mode 100644
index 000000000..2da3bf467
--- /dev/null
+++ b/config/locales/views/manager/fr.yml
@@ -0,0 +1,7 @@
+fr:
+  manager:
+    admins_groups:
+      add_admins_group_manager:
+        wrong_address:
+          one: "%{emails} n’est pas une adresse email valide"
+          other: "%{emails} ne sont pas des adresses emails valides"
diff --git a/config/routes.rb b/config/routes.rb
index c8c10cae4..9d7dc0dc9 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -56,6 +56,14 @@ Rails.application.routes.draw do
       delete 'delete', on: :member
     end
 
+    if ENV.fetch('ADMINS_GROUP_ENABLED') == 'enabled'
+      resources :admins_group_managers, path: 'gestionnaires', only: [:index, :show, :edit, :update]
+
+      resources :admins_groups, path: 'groupe_administrateurs', only: [:index, :show, :new, :create, :edit, :update] do
+        post 'add_admins_group_manager', on: :member
+      end
+    end
+
     resources :dossiers, only: [:show]
 
     resources :bill_signatures, only: [:index]
@@ -465,6 +473,17 @@ Rails.application.routes.draw do
     end
   end
 
+  if ENV.fetch('ADMINS_GROUP_ENABLED') == 'enabled'
+
+    #
+    # Admins Group Manager (gestionnaire)
+    #
+
+    scope module: 'admins_group_managers', path: 'gestionnaire', as: 'admins_group_manager' do
+      resources :admins_groups, path: 'groupe_administrateurs', only: [:index, :create]
+    end
+  end
+
   #
   # Administrateur
   #
diff --git a/db/migrate/20230813091837_create_admins_group_managers.rb b/db/migrate/20230813091837_create_admins_group_managers.rb
new file mode 100644
index 000000000..b8cb3780c
--- /dev/null
+++ b/db/migrate/20230813091837_create_admins_group_managers.rb
@@ -0,0 +1,9 @@
+class CreateAdminsGroupManagers < ActiveRecord::Migration[7.0]
+  def change
+    create_table "admins_group_managers" do |t|
+      t.bigint :user_id, null: false
+      t.index [:user_id], name: :index_admins_group_managers_on_user_id
+      t.timestamps
+    end
+  end
+end
diff --git a/db/migrate/20230813091838_create_admins_groups.rb b/db/migrate/20230813091838_create_admins_groups.rb
new file mode 100644
index 000000000..75a38013e
--- /dev/null
+++ b/db/migrate/20230813091838_create_admins_groups.rb
@@ -0,0 +1,15 @@
+class CreateAdminsGroups < ActiveRecord::Migration[7.0]
+  def change
+    create_table "admins_groups" do |t|
+      t.string :name, null: false
+      t.references :admins_group
+      t.index [:name], name: :index_admins_groups_on_name
+      t.timestamps
+    end
+
+    create_join_table :admins_groups, :admins_group_managers do |t|
+      t.index [:admins_group_id, :admins_group_manager_id], name: :index_on_admins_group_and_admins_group_manager
+      t.index [:admins_group_manager_id, :admins_group_id], name: :index_on_admins_group_manager_and_admins_group
+    end
+  end
+end
diff --git a/db/migrate/20230813091846_add_admins_group_to_administrateurs.rb b/db/migrate/20230813091846_add_admins_group_to_administrateurs.rb
new file mode 100644
index 000000000..52c07d340
--- /dev/null
+++ b/db/migrate/20230813091846_add_admins_group_to_administrateurs.rb
@@ -0,0 +1,7 @@
+class AddAdminsGroupToAdministrateurs < ActiveRecord::Migration[7.0]
+  disable_ddl_transaction!
+
+  def change
+    add_reference :administrateurs, :admins_group, index: { algorithm: :concurrently }, null: true
+  end
+end
diff --git a/db/migrate/20230813091847_add_foreign_key_admins_group_to_administrateurs.rb b/db/migrate/20230813091847_add_foreign_key_admins_group_to_administrateurs.rb
new file mode 100644
index 000000000..e155c3a13
--- /dev/null
+++ b/db/migrate/20230813091847_add_foreign_key_admins_group_to_administrateurs.rb
@@ -0,0 +1,5 @@
+class AddForeignKeyAdminsGroupToAdministrateurs < ActiveRecord::Migration[7.0]
+  def change
+    add_foreign_key :administrateurs, :admins_groups, validate: false
+  end
+end
diff --git a/db/migrate/20230813091848_validate_foreign_key_admins_group_to_administrateurs.rb b/db/migrate/20230813091848_validate_foreign_key_admins_group_to_administrateurs.rb
new file mode 100644
index 000000000..6af848b01
--- /dev/null
+++ b/db/migrate/20230813091848_validate_foreign_key_admins_group_to_administrateurs.rb
@@ -0,0 +1,5 @@
+class ValidateForeignKeyAdminsGroupToAdministrateurs < ActiveRecord::Migration[7.0]
+  def change
+    validate_foreign_key :administrateurs, :admins_groups
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 18ae407b2..d06624b51 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -61,9 +61,11 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_28_083809) do
   end
 
   create_table "administrateurs", id: :serial, force: :cascade do |t|
+    t.bigint "admins_group_id"
     t.datetime "created_at", precision: 6
     t.datetime "updated_at", precision: 6
     t.bigint "user_id", null: false
+    t.index ["admins_group_id"], name: "index_administrateurs_on_admins_group_id"
     t.index ["user_id"], name: "index_administrateurs_on_user_id"
   end
 
@@ -88,6 +90,29 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_28_083809) do
     t.index ["procedure_id"], name: "index_administrateurs_procedures_on_procedure_id"
   end
 
+  create_table "admins_group_managers", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.bigint "user_id", null: false
+    t.index ["user_id"], name: "index_admins_group_managers_on_user_id"
+  end
+
+  create_table "admins_group_managers_groups", id: false, force: :cascade do |t|
+    t.bigint "admins_group_id", null: false
+    t.bigint "admins_group_manager_id", null: false
+    t.index ["admins_group_id", "admins_group_manager_id"], name: "index_on_admins_group_and_admins_group_manager"
+    t.index ["admins_group_manager_id", "admins_group_id"], name: "index_on_admins_group_manager_and_admins_group"
+  end
+
+  create_table "admins_groups", force: :cascade do |t|
+    t.bigint "admins_group_id"
+    t.datetime "created_at", null: false
+    t.string "name", null: false
+    t.datetime "updated_at", null: false
+    t.index ["admins_group_id"], name: "index_admins_groups_on_admins_group_id"
+    t.index ["name"], name: "index_admins_groups_on_name"
+  end
+
   create_table "api_tokens", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.bigint "administrateur_id", null: false
     t.bigint "allowed_procedure_ids", array: true
@@ -1034,6 +1059,7 @@ ActiveRecord::Schema[7.0].define(version: 2023_09_28_083809) do
 
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "administrateurs", "admins_groups"
   add_foreign_key "administrateurs", "users"
   add_foreign_key "administrateurs_instructeurs", "administrateurs"
   add_foreign_key "administrateurs_instructeurs", "instructeurs"
diff --git a/spec/controllers/admins_group_managers/admins_group_manager_controller_spec.rb b/spec/controllers/admins_group_managers/admins_group_manager_controller_spec.rb
new file mode 100644
index 000000000..721188fc1
--- /dev/null
+++ b/spec/controllers/admins_group_managers/admins_group_manager_controller_spec.rb
@@ -0,0 +1,12 @@
+describe AdminsGroupManagers::AdminsGroupManagerController, type: :controller do
+  describe 'before actions: authenticate_admins_group_manager!' do
+    it 'is present' do
+      before_actions = AdminsGroupManagers::AdminsGroupManagerController
+        ._process_action_callbacks
+        .filter { |process_action_callbacks| process_action_callbacks.kind == :before }
+        .map(&:filter)
+
+      expect(before_actions).to include(:authenticate_admins_group_manager!)
+    end
+  end
+end
diff --git a/spec/controllers/admins_group_managers/admins_groups_controller_spec.rb b/spec/controllers/admins_group_managers/admins_groups_controller_spec.rb
new file mode 100644
index 000000000..0feaecf17
--- /dev/null
+++ b/spec/controllers/admins_group_managers/admins_groups_controller_spec.rb
@@ -0,0 +1,23 @@
+describe AdminsGroupManagers::AdminsGroupsController, type: :controller do
+  let(:admins_group_manager) { create(:admins_group_manager) }
+
+  describe "#index" do
+    subject { get :index }
+
+    context "when not logged" do
+      before { subject }
+      it { expect(response).to redirect_to(new_user_session_path) }
+    end
+
+    context "when logged in" do
+      let!(:admins_group) { create(:admins_group, admins_group_managers: [admins_group_manager]) }
+      before do
+        sign_in(admins_group_manager.user)
+        subject
+      end
+
+      it { expect(response).to have_http_status(:ok) }
+      it { expect(assigns(:admins_groups)).to include(admins_group) }
+    end
+  end
+end
diff --git a/spec/controllers/manager/admins_group_managers_controller_spec.rb b/spec/controllers/manager/admins_group_managers_controller_spec.rb
new file mode 100644
index 000000000..a732bdee7
--- /dev/null
+++ b/spec/controllers/manager/admins_group_managers_controller_spec.rb
@@ -0,0 +1,25 @@
+describe Manager::AdminsGroupManagersController, type: :controller do
+  let(:super_admin) { create(:super_admin) }
+  let(:admins_group_manager) { create(:admins_group_manager) }
+
+  before { sign_in super_admin }
+
+  describe '#index' do
+    render_views
+
+    it 'searches admin by email' do
+      get :index, params: { search: admins_group_manager.email }
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe '#show' do
+    render_views
+
+    before do
+      get :show, params: { id: admins_group_manager.id }
+    end
+
+    it { expect(response.body).to include(admins_group_manager.email) }
+  end
+end
diff --git a/spec/controllers/manager/admins_groups_controller_spec.rb b/spec/controllers/manager/admins_groups_controller_spec.rb
new file mode 100644
index 000000000..d556ec317
--- /dev/null
+++ b/spec/controllers/manager/admins_groups_controller_spec.rb
@@ -0,0 +1,27 @@
+describe Manager::AdminsGroupsController, type: :controller do
+  let(:super_admin) { create(:super_admin) }
+  let(:admins_group) { create(:admins_group) }
+
+  before { sign_in super_admin }
+
+  describe '#index' do
+    render_views
+
+    before do
+      admins_group
+      get :index
+    end
+
+    it { expect(response.body).to include(admins_group.name) }
+  end
+
+  describe '#show' do
+    render_views
+
+    before do
+      get :show, params: { id: admins_group.id }
+    end
+
+    it { expect(response.body).to include(admins_group.name) }
+  end
+end
diff --git a/spec/factories/admins_group.rb b/spec/factories/admins_group.rb
new file mode 100644
index 000000000..b85b14cd4
--- /dev/null
+++ b/spec/factories/admins_group.rb
@@ -0,0 +1,5 @@
+FactoryBot.define do
+  factory :admins_group do
+    sequence(:name) { |n| "Group #{n}" }
+  end
+end
diff --git a/spec/factories/admins_group_manager.rb b/spec/factories/admins_group_manager.rb
new file mode 100644
index 000000000..b8bf34a83
--- /dev/null
+++ b/spec/factories/admins_group_manager.rb
@@ -0,0 +1,12 @@
+FactoryBot.define do
+  sequence(:admins_group_manager_email) { |n| "admins_group_manager#{n}@demarches-simplifiees.fr" }
+
+  factory :admins_group_manager do
+    user { association :user, email: email, password: password }
+
+    transient do
+      email { generate(:admins_group_manager_email) }
+      password { 'somethingverycomplated!' }
+    end
+  end
+end
diff --git a/spec/mailers/admins_group_mailer_spec.rb b/spec/mailers/admins_group_mailer_spec.rb
new file mode 100644
index 000000000..dfb507417
--- /dev/null
+++ b/spec/mailers/admins_group_mailer_spec.rb
@@ -0,0 +1,16 @@
+RSpec.describe AdminsGroupMailer, type: :mailer do
+  describe '#notify_added_admins_group_managers' do
+    let(:admins_group) { create(:admins_group) }
+
+    let(:admins_group_managers_to_add) { [create(:admins_group_manager, email: 'int3@g'), create(:admins_group_manager, email: 'int4@g')] }
+
+    let(:current_super_admin_email) { 'toto@email.com' }
+
+    subject { described_class.notify_added_admins_group_managers(admins_group, admins_group_managers_to_add, current_super_admin_email) }
+
+    before { admins_group_managers_to_add.each { admins_group.add(_1) } }
+
+    it { expect(subject.body).to include('Vous venez d’être nommé gestionnaire du groupe') }
+    it { expect(subject.bcc).to match_array(['int3@g', 'int4@g']) }
+  end
+end
diff --git a/spec/mailers/previews/admins_group_mailer_preview.rb b/spec/mailers/previews/admins_group_mailer_preview.rb
new file mode 100644
index 000000000..0c92760ef
--- /dev/null
+++ b/spec/mailers/previews/admins_group_mailer_preview.rb
@@ -0,0 +1,14 @@
+class AdminsGroupMailerPreview < ActionMailer::Preview
+  def notify_added_admins_group_managers
+    admins_group = AdminsGroup.new(name: 'un groupe d\'admin')
+    current_super_admin_email = 'admin@dgfip.com'
+    admins_group_managers = [AdminsGroupManager.new(user: user)]
+    AdminsGroupMailer.notify_added_admins_group_managers(admins_group, admins_group_managers, current_super_admin_email)
+  end
+
+  private
+
+  def user
+    User.new(id: 10, email: 'test@exemple.fr')
+  end
+end
diff --git a/spec/mailers/previews/user_mailer_preview.rb b/spec/mailers/previews/user_mailer_preview.rb
index 2a02dad4f..2601027d8 100644
--- a/spec/mailers/previews/user_mailer_preview.rb
+++ b/spec/mailers/previews/user_mailer_preview.rb
@@ -24,6 +24,11 @@ class UserMailerPreview < ActionMailer::Preview
     UserMailer.invite_instructeur(user, 'aedfa0d0')
   end
 
+  def invite_admins_group_manager
+    admins_group = AdminsGroup.new(name: 'Root admins group')
+    UserMailer.invite_admins_group_manager(user, 'aedfa0d0', admins_group)
+  end
+
   private
 
   def user
diff --git a/spec/models/administrateur_spec.rb b/spec/models/administrateur_spec.rb
index 065fda8ca..e658359e7 100644
--- a/spec/models/administrateur_spec.rb
+++ b/spec/models/administrateur_spec.rb
@@ -3,6 +3,7 @@ describe Administrateur, type: :model do
 
   describe 'associations' do
     it { is_expected.to have_and_belong_to_many(:instructeurs) }
+    it { is_expected.to belong_to(:admins_group).optional }
   end
 
   describe "#can_be_deleted?" do
diff --git a/spec/models/admins_group_manager_spec.rb b/spec/models/admins_group_manager_spec.rb
new file mode 100644
index 000000000..61ca156d0
--- /dev/null
+++ b/spec/models/admins_group_manager_spec.rb
@@ -0,0 +1,5 @@
+describe AdminsGroupManager, type: :model do
+  describe 'associations' do
+    it { is_expected.to have_and_belong_to_many(:admins_groups) }
+  end
+end
diff --git a/spec/models/admins_group_spec.rb b/spec/models/admins_group_spec.rb
new file mode 100644
index 000000000..30d227a4a
--- /dev/null
+++ b/spec/models/admins_group_spec.rb
@@ -0,0 +1,8 @@
+describe AdminsGroup, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:admins_group).optional }
+    it { is_expected.to have_many(:children) }
+    it { is_expected.to have_many(:administrateurs) }
+    it { is_expected.to have_and_belong_to_many(:admins_group_managers) }
+  end
+end