diff --git a/.rubocop.yml b/.rubocop.yml
index e4a51bf6c..b696b41ef 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -10,6 +10,9 @@ Metrics/AbcSize:
   Max: 45
 Metrics/ClassLength:
   Max: 200
+Metrics/BlockLength:
+  Exclude:
+    - 'lib/tasks/**/*.rake'
 Style/BracesAroundHashParameters:
   EnforcedStyle: context_dependent
 Style/RegexpLiteral:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7cae73cce..b32f37223 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,7 +54,7 @@
 # v2.7.3 2018 December 03
 
 - Updated Uglifier gem to support ES6 syntax
-- Fix rake task fablab:es_build_projects_index for ElasticSearch > 1.7
+- Fix rake task `fablab:es:build_projects_index` for ElasticSearch > 1.7
 - Fix Dockerfile: yarn was not setup correctly
 - Fix: unable to build assets
 
@@ -96,7 +96,7 @@
 
 - Ability to parametrize machines order on the booking page
 - Ability to set a neutral gender for the fablab's title (#108)
-- Fix a bug: rake task fablab:fix:categories_slugs bash interpretation error
+- Fix a bug: rake task `fablab:fix:categories_slugs` bash interpretation error
 - Fix a bug: file inputs filled with long filenames render improperly with an overflow
 - Fix a bug: title concordance radio buttons render improperly on smaller screens
 - Improved verifications in ElasticSearch upgrade script
@@ -290,7 +290,7 @@
 - Fix a bug: new plans statistics are not shown
 - [TODO DEPLOY] `rake db:migrate`, then `rake db:seed`
 - [TODO DEPLOY] add the `FABLAB_WITHOUT_SPACES` environment variable
-- [TODO DEPLOY] `rake fablab:es_add_spaces`
+- [TODO DEPLOY] `rake fablab:es:add_spaces`
 - [TODO DEPLOY] `rake fablab:fix:new_plans_statistics` if you have created plans from v2.4.10
 
 ## v2.4.11 2017 March 15
@@ -306,7 +306,7 @@
 - Fix a bug: navigation to about page duplicates admin's links in left menu
 - Fix a bug: changing the price of a plan lost its past statistics
 - [TODO DEPLOY] `rake db:migrate`
-- [TODO DEPLOY] `rake fablab:set_plans_slugs`
+- [TODO DEPLOY] `rake fablab:fix:set_plans_slugs`
 
 ## v2.4.9 2017 January 4
 
@@ -321,8 +321,8 @@
 - Fix a bug: when regenerating statistics, previous values are not fully removed (only 10 firsts), resulting in wrong statistics generation (2)
 - Fix a bug: when deleting an availability just after its creation, the indexer workers crash and retries for a month
 - [TODO DEPLOY] remove possible value `application/` in `ALLOWED_MIME_TYPES` list, in environment variable
-- [TODO DEPLOY] `rails runner StatisticCustomAggregation.destroy_all`, then `rake db:seed`, then `rake fablab:es_build_availabilities_index` (1)
-- [TODO DEPLOY] `rake fablab:generate_stats[1095]` if you already has regenerated the statistics in the past, then they are very likely corrupted. Run this task to fix (2)
+- [TODO DEPLOY] `rails runner StatisticCustomAggregation.destroy_all`, then `rake db:seed`, then `rake fablab:es:build_availabilities_index` (1)
+- [TODO DEPLOY] `rake fablab:es:generate_stats[1095]` if you already has regenerated the statistics in the past, then they are very likely corrupted. Run this task to fix (2)
 
 ## v2.4.8 2016 December 15
 
@@ -450,8 +450,8 @@
 - Fix a bug: reordering project's steps trigger the unsaved-warning dialog
 - Fix a bug: unable to compile assets in Docker with CoffeeScript error
 - Fix a bug: do not force HTTPS for URLs in production environments
-- [TODO DEPLOY] `rake fablab:es_build_availabilities_index`
-- [TODO DEPLOY] `rake fablab:es_add_event_filters`
+- [TODO DEPLOY] `rake fablab:es:build_availabilities_index`
+- [TODO DEPLOY] `rake fablab:es:add_event_filters`
 - [TODO DEPLOY] `rake db:migrate`
 - [TODO DEPLOY] `bundle install`
 - [TODO DEPLOY] add `EXCEL_DATE_FORMAT`, `ALLOWED_EXTENSIONS` and `ALLOWED_MIME_TYPES` environment variable in `application.yml`
diff --git a/README.md b/README.md
index 47a4e17f9..b575911c0 100644
--- a/README.md
+++ b/README.md
@@ -164,7 +164,7 @@ This procedure is not easy to follow so if you don't need to write some code for
    rake db:create
    rake db:migrate
    ADMIN_EMAIL='youradminemail' ADMIN_PASSWORD='youradminpassword' rake db:seed
-   rake fablab:es_build_stats
+   rake fablab:es:build_stats
    # for tests
    RAILS_ENV=test rake db:create
    RAILS_ENV=test rake db:migrate
@@ -255,7 +255,7 @@ environment.
    rake db:create
    rake db:migrate
    ADMIN_EMAIL='youradminemail' ADMIN_PASSWORD='youradminpassword' rake db:seed
-   rake fablab:es_build_stats
+   rake fablab:es:build_stats
    # for tests
    RAILS_ENV=test rake db:create
    RAILS_ENV=test rake db:migrate
@@ -392,7 +392,7 @@ If the scheduled task wasn't executed for any reason (eg. you are in a dev envir
 
 ```bash
 # Here for the 50 last days
-rake fablab:generate_stats[50]
+rake fablab:es:generate_stats[50]
 ```
 
 <a name="backup-and-restore-elasticsearch"></a>
diff --git a/app/models/invoice.rb b/app/models/invoice.rb
index 18fbba2ed..2cc5c875c 100644
--- a/app/models/invoice.rb
+++ b/app/models/invoice.rb
@@ -123,7 +123,7 @@ class Invoice < ActiveRecord::Base
     reference
   end
 
-  # for debug & used by rake task "fablab:regenerate_invoices"
+  # for debug & used by rake task "fablab:maintenance:regenerate_invoices"
   def regenerate_invoice_pdf
     pdf = ::PDF::Invoice.new(self, nil).render
     File.binwrite(file, pdf)
diff --git a/doc/elastic_upgrade.md b/doc/elastic_upgrade.md
index ed5d687a2..bed715d7e 100644
--- a/doc/elastic_upgrade.md
+++ b/doc/elastic_upgrade.md
@@ -145,7 +145,7 @@ Copy [elasticsearch.yml](../docker/elasticsearch.yml) and [log4j2.properties](..
 
 Finally reindex your data:
 ```bash
-rake fablab:es_build_stats
-rake fablab:generate_stats[3000]
-rake fablab:es_build_projects_index
+rake fablab:es:build_stats
+rake fablab:es:generate_stats[3000]
+rake fablab:es:build_projects_index
 ```
diff --git a/doc/sso_with_github.md b/doc/sso_with_github.md
index 0ba007fe7..f955b4052 100644
--- a/doc/sso_with_github.md
+++ b/doc/sso_with_github.md
@@ -53,7 +53,7 @@ For this guide, we will use [GitHub](https://developer.github.com/v3/oauth/) as
 
 ```bash
 # replace GitHub with the name of the provider you just created
-rake fablab:switch_auth_provider[GitHub]
+rake fablab:auth:switch_provider[GitHub]
 ```
 
 - As the command just prompted you, you have to re-compile the assets
@@ -62,5 +62,5 @@ rake fablab:switch_auth_provider[GitHub]
 - Then restart the web-server or the container.
 - Finally, to notify all existing users about the change (and send them their migration code/link), run:
 ```bash
-rake fablab:notify_auth_changed
+rake fablab:auth:notify_changed
 ```
diff --git a/docker/README.md b/docker/README.md
index d39441d03..af68cefa2 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -236,7 +236,7 @@ docker-compose run --rm -e ADMIN_EMAIL=xxx -e ADMIN_PASSWORD=xxx fabmanager bund
 
 ### prepare Elasticsearch (search engine)
 
-`docker-compose run --rm fabmanager bundle exec rake fablab:es_build_stats`
+`docker-compose run --rm fabmanager bundle exec rake fablab:es:build_stats`
 
 ### start all services
 
diff --git a/lib/tasks/fablab.rake b/lib/tasks/fablab.rake
deleted file mode 100644
index 4247c1e5e..000000000
--- a/lib/tasks/fablab.rake
+++ /dev/null
@@ -1,328 +0,0 @@
-namespace :fablab do
-  # desc "Get all stripe plans and create in fablab app"
-  # task stripe_plan: :environment do
-  #   Stripe::Plan.all.data.each do |plan|
-  #     unless Plan.find_by(stp_plan_id: plan.id)
-  #       group = Group.friendly.find(plan.id.split('-').first)
-  #       if group
-  #         Plan.create(stp_plan_id: plan.id, name: plan.name, amount: plan.amount, interval: plan.interval, group_id: group.id, skip_create_stripe_plan: true)
-  #       else
-  #         puts plan.name + " n'a pas été créé. [error]"
-  #       end
-  #     end
-  #   end
-  #
-  #   if Plan.column_names.include? "training_credit_nb"
-  #     Plan.all.each do |p|
-  #       p.update_columns(training_credit_nb: (p.interval == 'month' ? 1 : 5))
-  #     end
-  #   end
-  # end
-
-  desc 'Regenerate the invoices'
-  task :regenerate_invoices, [:year, :month] => :environment do |task, args|
-    year = args.year || Time.now.year
-    month = args.month || Time.now.month
-    start_date = Time.new(year.to_i, month.to_i, 1)
-    end_date = start_date.next_month
-    puts "-> Start regenerate the invoices between #{I18n.l start_date, format: :long} in #{I18n.l end_date-1.minute, format: :long}"
-    invoices = Invoice.only_invoice.where('created_at >= :start_date AND created_at < :end_date', {start_date: start_date, end_date: end_date}).order(created_at: :asc)
-    invoices.each(&:regenerate_invoice_pdf)
-    puts '-> Done'
-  end
-
-  desc 'Cancel stripe subscriptions'
-  task cancel_subscriptions: :environment do
-    Subscription.where('expiration_date >= ?', Time.now.at_beginning_of_day).each do |s|
-      puts "-> Start cancel subscription of #{s.user.email}"
-      s.cancel
-      puts '-> Done'
-    end
-  end
-
-  desc '(re)Build ElasticSearch fablab base for stats'
-  task es_build_stats: :environment do
-
-    puts 'DELETE stats'
-    `curl -XDELETE http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats`
-
-    puts 'PUT index stats'
-    `curl -XPUT http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats -d'
-    {
-      "settings" : {
-        "index" : {
-          "number_of_replicas" : 0
-        }
-      }
-    }
-    '`
-
-
-    %w[account event machine project subscription training user space].each do |stat|
-      puts "PUT Mapping stats/#{stat}"
-      `curl -XPUT http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats/#{stat}/_mapping -d '
-      {
-         "properties": {
-            "type": {
-               "type": "string",
-               "index" : "not_analyzed"
-            },
-            "subType": {
-               "type": "string",
-               "index" : "not_analyzed"
-            },
-            "date": {
-               "type": "date"
-            },
-            "name": {
-               "type": "string",
-               "index" : "not_analyzed"
-            }
-         }
-      }';`
-    end
-    es_add_event_filters
-  end
-
-  desc 'add event filters to statistics'
-  task es_add_event_filters: :environment do
-    es_add_event_filters
-  end
-
-  def es_add_event_filters
-    `curl -XPUT http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats/event/_mapping -d '
-      {
-         "properties": {
-            "ageRange": {
-               "type": "string",
-               "index" : "not_analyzed"
-            },
-            "eventTheme": {
-               "type": "string",
-               "index" : "not_analyzed"
-            }
-         }
-      }';`
-  end
-
-
-  desc 'add spaces reservations to statistics'
-  task es_add_spaces: :environment do
-    `curl -XPUT http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats/space/_mapping -d '
-      {
-         "properties": {
-            "type": {
-               "type": "string",
-               "index" : "not_analyzed"
-            },
-            "subType": {
-               "type": "string",
-               "index" : "not_analyzed"
-            },
-            "date": {
-               "type": "date"
-            },
-            "name": {
-               "type": "string",
-               "index" : "not_analyzed"
-            }
-         }
-      }';`
-  end
-
-  desc 'sync all/one project in ElasticSearch index'
-  task :es_build_projects_index, [:id] => :environment do |task, args|
-    client = Project.__elasticsearch__.client
-    # create index if not exists
-    unless client.indices.exists? index: Project.index_name
-      Project.__elasticsearch__.create_index! force: true
-    end
-
-    # index requested documents
-    if args.id
-      ProjectIndexerWorker.perform_async(:index, id)
-    else
-      Project.pluck(:id).each do |project_id|
-        ProjectIndexerWorker.perform_async(:index, project_id)
-      end
-    end
-  end
-
-  desc 'sync all/one availabilities in ElasticSearch index'
-  task :es_build_availabilities_index, [:id] => :environment do |task, args|
-    client = Availability.__elasticsearch__.client
-    # create index if not exists
-    unless client.indices.exists? index: Availability.index_name
-      Availability.__elasticsearch__.create_index! force: true
-    end
-    # delete doctype if exists
-    if client.indices.exists_type? index: Availability.index_name, type: Availability.document_type
-      client.indices.delete_mapping index: Availability.index_name, type: Availability.document_type
-    end
-    # create doctype
-    client.indices.put_mapping index: Availability.index_name,  type: Availability.document_type, body: Availability.mappings.to_hash
-
-    # verify doctype creation was successful
-    if client.indices.exists_type? index: Availability.index_name, type: Availability.document_type
-      puts "[ElasticSearch] #{Availability.index_name}/#{Availability.document_type} successfully created with its mapping."
-
-      # index requested documents
-      if args.id
-        AvailabilityIndexerWorker.perform_async(:index, id)
-      else
-        Availability.pluck(:id).each do |availability_id|
-          AvailabilityIndexerWorker.perform_async(:index, availability_id)
-        end
-      end
-    else
-      puts "[ElasticSearch] An error occurred while creating #{Availability.index_name}/#{Availability.document_type}. Please check your ElasticSearch configuration."
-      puts "\nCancelling..."
-    end
-  end
-
-  desc 'recreate every versions of images'
-  task build_images_versions: :environment do
-    Project.find_each do |project|
-      project.project_image.attachment.recreate_versions! if project.project_image.present? and project.project_image.attachment.present?
-    end
-    ProjectStepImage.find_each do |project_step_image|
-      project_step_image.attachment.recreate_versions! if project_step_image.present? and project_step_image.attachment.present?
-    end
-    Machine.find_each do |machine|
-      machine.machine_image.attachment.recreate_versions! if machine.machine_image.present?
-    end
-    Event.find_each do |event|
-      event.event_image.attachment.recreate_versions! if event.event_image.present?
-    end
-
-  end
-
-
-  desc 'switch the active authentication provider'
-  task :switch_auth_provider, [:provider] => :environment do |task, args|
-    unless args.provider
-      fail 'FATAL ERROR: You must pass a provider name to activate'
-    end
-
-    unless AuthProvider.find_by(name: args.provider) != nil
-      providers = AuthProvider.all.inject('') do |str, item|
-        str += item[:name]+', '
-      end
-      fail "FATAL ERROR: the provider '#{args.provider}' does not exists. Available providers are: #{providers[0..-3]}"
-    end
-
-    if AuthProvider.active.name == args.provider
-      fail "FATAL ERROR: the provider '#{args.provider}' is already enabled"
-    end
-
-    # disable previous provider
-    prev_prev = AuthProvider.find_by(status: 'previous')
-    unless prev_prev.nil?
-      prev_prev.update_attribute(:status, 'pending')
-    end
-    AuthProvider.active.update_attribute(:status, 'previous')
-
-    # enable given provider
-    AuthProvider.find_by(name: args.provider).update_attribute(:status, 'active')
-
-    # migrate the current users.
-    if AuthProvider.active.providable_type != DatabaseProvider.name
-      User.all.each do |user|
-        # Concerns any providers except local database
-        user.generate_auth_migration_token
-      end
-    else
-      User.all.each do |user|
-        # Concerns local database provider
-        user.update_attribute(:auth_token, nil)
-      end
-    end
-
-    # ask the user to restart the application
-    puts "\nActivation successful"
-
-    puts "\n/!\\ WARNING: Please consider the following, otherwise the authentication will be bogus:"
-    puts "\t1) CLEAN the cache with `rake tmp:clear`"
-    puts "\t2) REBUILD the assets with `rake assets:precompile`"
-    puts "\t3) RESTART the application"
-    puts "\t4) NOTIFY the current users with `rake fablab:notify_auth_changed`\n\n"
-
-  end
-
-  desc 'notify users that the auth provider has changed'
-  task notify_auth_changed: :environment do
-
-    I18n.locale = I18n.default_locale
-
-    # notify every users if the provider is not local database provider
-    if AuthProvider.active.providable_type != DatabaseProvider.name
-      User.all.each do |user|
-        NotificationCenter.call type: 'notify_user_auth_migration',
-                                receiver: user,
-                                attached_object: user
-      end
-    end
-
-    puts "\nUsers successfully notified\n\n"
-  end
-
-  desc 'generate fixtures from db'
-  task generate_fixtures: :environment do
-    Rails.application.eager_load!
-    ActiveRecord::Base.descendants.reject { |c| c == ActiveRecord::SchemaMigration or c == PartnerPlan }.each do |ar_base|
-      p "========== #{ar_base} =============="
-      ar_base.dump_fixtures
-    end
-  end
-
-  desc 'clean stripe secrets from VCR cassettes'
-  task clean_cassettes_secrets: :environment do
-    Dir['test/vcr_cassettes/*.yml'].each do |cassette_file|
-      cassette = File.read(cassette_file)
-      cassette.gsub!(Rails.application.secrets.stripe_api_key, 'sk_test_testfaketestfaketestfake')
-      cassette.gsub!(Rails.application.secrets.stripe_publishable_key, 'pk_test_faketestfaketestfaketest')
-      puts cassette
-      File.write(cassette_file, cassette)
-    end
-  end
-
-  desc '(re)generate statistics in elasticsearch for the past period'
-  task :generate_stats, [:period] => :environment do |task, args|
-    unless args.period
-      fail 'FATAL ERROR: You must pass a number of days (=> past period) to generate statistics on'
-    end
-
-    days = args.period.to_i
-    days.times.each do |i|
-      StatisticService.new.generate_statistic({start_date: i.day.ago.beginning_of_day,end_date: i.day.ago.end_of_day})
-    end
-  end
-
-
-  desc 'set slugs to plans'
-  task set_plans_slugs: :environment do
-    # this will maintain compatibility with existing statistics
-    Plan.all.each do |p|
-      p.slug = p.stp_plan_id
-      p.save
-    end
-  end
-
-  desc 'get incoherent invoice'
-  task :get_incoherent_invoice, [:start_date] => :environment do |task, args|
-    date = Date.parse('2017-05-01')
-    if args.start_date
-      begin
-        date = Date.parse(args.start_date)
-      rescue => e
-        fail e
-      end
-    end
-    Invoice.where('created_at > ? AND stp_invoice_id IS NOT NULL', date).each do |invoice|
-      stp_invoice = Stripe::Invoice.retrieve(invoice.stp_invoice_id)
-      if invoice.amount_paid != stp_invoice.total
-        puts "Id: #{invoice.id}, reference: #{invoice.reference}, stripe id: #{stp_invoice.id}, invoice total: #{invoice.amount_paid / 100.0}, stripe invoice total: #{stp_invoice.total / 100.0}, date: #{invoice.created_at}"
-      end
-    end
-  end
-end
diff --git a/lib/tasks/fablab/auth.rake b/lib/tasks/fablab/auth.rake
new file mode 100644
index 000000000..ff27dd7c2
--- /dev/null
+++ b/lib/tasks/fablab/auth.rake
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+# SSO and authentication relative tasks
+namespace :fablab do
+  namespace :auth do
+
+    desc 'switch the active authentication provider'
+    task :switch_provider, [:provider] => :environment do |_task, args|
+      raise 'FATAL ERROR: You must pass a provider name to activate' unless args.provider
+
+      if AuthProvider.find_by(name: args.provider).nil?
+        providers = AuthProvider.all.inject('') { |str, item| str + item[:name] + ', ' }
+        raise "FATAL ERROR: the provider '#{args.provider}' does not exists. Available providers are: #{providers[0..-3]}"
+      end
+
+      raise "FATAL ERROR: the provider '#{args.provider}' is already enabled" if AuthProvider.active.name == args.provider
+
+      # disable previous provider
+      prev_prev = AuthProvider.find_by(status: 'previous')
+      prev_prev&.update_attribute(:status, 'pending')
+
+      AuthProvider.active.update_attribute(:status, 'previous')
+
+      # enable given provider
+      AuthProvider.find_by(name: args.provider).update_attribute(:status, 'active')
+
+      # migrate the current users.
+      if AuthProvider.active.providable_type != DatabaseProvider.name
+        # Concerns any providers except local database
+        User.all.each(&:generate_auth_migration_token)
+      else
+        User.all.each do |user|
+          # Concerns local database provider
+          user.update_attribute(:auth_token, nil)
+        end
+      end
+
+      # ask the user to restart the application
+      puts "\nActivation successful"
+
+      puts "\n/!\\ WARNING: Please consider the following, otherwise the authentication will be bogus:"
+      puts "\t1) CLEAN the cache with `rake tmp:clear`"
+      puts "\t2) REBUILD the assets with `rake assets:precompile`"
+      puts "\t3) RESTART the application"
+      puts "\t4) NOTIFY the current users with `rake fablab:auth:notify_changed`\n\n"
+
+    end
+
+    desc 'notify users that the auth provider has changed'
+    task notify_changed: :environment do
+
+      I18n.locale = I18n.default_locale
+
+      # notify every users if the provider is not local database provider
+      if AuthProvider.active.providable_type != DatabaseProvider.name
+        User.all.each do |user|
+          NotificationCenter.call type: 'notify_user_auth_migration',
+                                  receiver: user,
+                                  attached_object: user
+        end
+      end
+
+      puts "\nUsers successfully notified\n\n"
+    end
+  end
+end
diff --git a/lib/tasks/fablab/es.rake b/lib/tasks/fablab/es.rake
new file mode 100644
index 000000000..c0a8f1ddc
--- /dev/null
+++ b/lib/tasks/fablab/es.rake
@@ -0,0 +1,165 @@
+# frozen_string_literal: true
+
+# ElasticSearch relative tasks
+namespace :fablab do
+  namespace :es do
+    desc '(re)Build ElasticSearch fablab base for stats'
+    task build_stats: :environment do
+      delete_stats_index
+      create_stats_index
+      create_stats_mappings
+      add_event_filters
+    end
+
+    def delete_stats_index
+      puts 'DELETE stats'
+      `curl -XDELETE http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats`
+    end
+
+    def create_stats_index
+      puts 'PUT index stats'
+      `curl -XPUT http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats -d'
+    {
+      "settings" : {
+        "index" : {
+          "number_of_replicas" : 0
+        }
+      }
+    }
+    '`
+    end
+
+    def create_stats_mappings
+      %w[account event machine project subscription training user space].each do |stat|
+        puts "PUT Mapping stats/#{stat}"
+        `curl -XPUT http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats/#{stat}/_mapping -d '
+      {
+         "properties": {
+            "type": {
+               "type": "string",
+               "index" : "not_analyzed"
+            },
+            "subType": {
+               "type": "string",
+               "index" : "not_analyzed"
+            },
+            "date": {
+               "type": "date"
+            },
+            "name": {
+               "type": "string",
+               "index" : "not_analyzed"
+            }
+         }
+      }';`
+      end
+    end
+
+    desc 'add event filters to statistics'
+    task add_event_filters: :environment do
+      add_event_filters
+    end
+
+    def add_event_filters
+      `curl -XPUT http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats/event/_mapping -d '
+      {
+         "properties": {
+            "ageRange": {
+               "type": "string",
+               "index" : "not_analyzed"
+            },
+            "eventTheme": {
+               "type": "string",
+               "index" : "not_analyzed"
+            }
+         }
+      }';`
+    end
+
+
+    desc 'add spaces reservations to statistics'
+    task add_spaces: :environment do
+      `curl -XPUT http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats/space/_mapping -d '
+      {
+         "properties": {
+            "type": {
+               "type": "string",
+               "index" : "not_analyzed"
+            },
+            "subType": {
+               "type": "string",
+               "index" : "not_analyzed"
+            },
+            "date": {
+               "type": "date"
+            },
+            "name": {
+               "type": "string",
+               "index" : "not_analyzed"
+            }
+         }
+      }';`
+    end
+
+    desc 'sync all/one project in ElasticSearch index'
+    task :build_projects_index, [:id] => :environment do |_task, args|
+      client = Project.__elasticsearch__.client
+      # create index if not exists
+      Project.__elasticsearch__.create_index! force: true unless client.indices.exists? index: Project.index_name
+
+      # index requested documents
+      if args.id
+        ProjectIndexerWorker.perform_async(:index, id)
+      else
+        Project.pluck(:id).each do |project_id|
+          ProjectIndexerWorker.perform_async(:index, project_id)
+        end
+      end
+    end
+
+    desc 'sync all/one availabilities in ElasticSearch index'
+    task :build_availabilities_index, [:id] => :environment do |_task, args|
+      client = Availability.__elasticsearch__.client
+      # create index if not exists
+      Availability.__elasticsearch__.create_index! force: true unless client.indices.exists? index: Availability.index_name
+      # delete doctype if exists
+      if client.indices.exists_type? index: Availability.index_name, type: Availability.document_type
+        client.indices.delete_mapping index: Availability.index_name, type: Availability.document_type
+      end
+      # create doctype
+      client.indices.put_mapping index: Availability.index_name,
+                                 type: Availability.document_type,
+                                 body: Availability.mappings.to_hash
+
+      # verify doctype creation was successful
+      if client.indices.exists_type? index: Availability.index_name, type: Availability.document_type
+        puts "[ElasticSearch] #{Availability.index_name}/#{Availability.document_type} successfully created with its mapping."
+
+        # index requested documents
+        if args.id
+          AvailabilityIndexerWorker.perform_async(:index, id)
+        else
+          Availability.pluck(:id).each do |availability_id|
+            AvailabilityIndexerWorker.perform_async(:index, availability_id)
+          end
+        end
+      else
+        puts "[ElasticSearch] An error occurred while creating #{Availability.index_name}/#{Availability.document_type}. " \
+           'Please check your ElasticSearch configuration.'
+        puts "\nCancelling..."
+      end
+    end
+
+
+    desc '(re)generate statistics in ElasticSearch for the past period'
+    task :generate_stats, [:period] => :environment do |_task, args|
+      raise 'FATAL ERROR: You must pass a number of days (=> past period) to generate statistics on' unless args.period
+
+      days = args.period.to_i
+      days.times.each do |i|
+        StatisticService.new.generate_statistic(start_date: i.day.ago.beginning_of_day, end_date: i.day.ago.end_of_day)
+      end
+    end
+
+  end
+end
diff --git a/lib/tasks/fablab/fix.rake b/lib/tasks/fablab/fix.rake
index d1c3d5070..d1119c3be 100644
--- a/lib/tasks/fablab/fix.rake
+++ b/lib/tasks/fablab/fix.rake
@@ -1,5 +1,9 @@
+# frozen_string_literal: true
+
+# Correctives for bugs or upgrades migrations tasks
 namespace :fablab do
   namespace :fix do
+    desc '[release 2.3.0] update reservations referencing reservables not present in database'
     task reservations_not_existing_reservable: :environment do
       ActiveRecord::Base.logger = Logger.new(STDOUT)
       ActiveRecord::Base.connection.execute(
@@ -9,23 +13,26 @@ namespace :fablab do
       )
     end
 
+    desc '[release 2.4.0] put every non-categorized events into a new category called "No Category", to ease re-categorization'
     task assign_category_to_uncategorized_events: :environment do
-      c = Category.find_or_create_by!({name: 'No category'})
+      c = Category.find_or_create_by!(name: 'No category')
       Event.where(category: nil).each do |e|
         e.category = c
         e.save!
       end
     end
 
+    desc '[release 2.4.11] fix is_rolling for edited plans'
     task rolling_plans: :environment do
       Plan.where(is_rolling: nil).each do |p|
-        if p.is_rolling.nil? and p.is_rolling != false
+        if p.is_rolling.nil? && p.is_rolling != false
           p.is_rolling = true
           p.save!
         end
       end
     end
 
+    desc '[release 2.5.0] create missing plans in statistics'
     task new_plans_statistics: :environment do
       StatisticSubType.where(key: nil).each do |sst|
         p = Plan.find_by(name: sst.label)
@@ -36,6 +43,7 @@ namespace :fablab do
       end
     end
 
+    desc '[release 2.5.5] create missing space prices'
     task new_group_space_prices: :environment do
       Space.all.each do |space|
         Group.all.each do |group|
@@ -48,6 +56,7 @@ namespace :fablab do
       end
     end
 
+    desc '[release 2.5.11] put all admins in a special group'
     task migrate_admins_group: :environment do
       admins = Group.find_by(slug: 'admins')
       User.all.each do |user|
@@ -58,38 +67,39 @@ namespace :fablab do
       end
     end
 
+    desc '[release 2.5.14] fix times of recursive events that crosses DST periods'
     task recursive_events_over_DST: :environment do
       include ApplicationHelper
       failed_ids = []
       groups = Event.group(:recurrence_id).count
       groups.keys.each do |recurrent_event_id|
-        if recurrent_event_id
-          begin
-            initial_event = Event.find(recurrent_event_id)
-            Event.where(recurrence_id: recurrent_event_id).where.not(id: recurrent_event_id).each do |event|
-              availability = event.availability
-              if initial_event.availability.start_at.hour != availability.start_at.hour
-                availability.start_at = dst_correction(initial_event.availability.start_at, availability.start_at)
-                availability.end_at = dst_correction(initial_event.availability.end_at, availability.end_at)
-                availability.save!
-              end
-            end
-          rescue ActiveRecord::RecordNotFound
-            failed_ids.push recurrent_event_id
+        next unless recurrent_event_id
+
+        begin
+          initial_event = Event.find(recurrent_event_id)
+          Event.where(recurrence_id: recurrent_event_id).where.not(id: recurrent_event_id).each do |event|
+            availability = event.availability
+            next if initial_event.availability.start_at.hour == availability.start_at.hour
+
+            availability.start_at = dst_correction(initial_event.availability.start_at, availability.start_at)
+            availability.end_at = dst_correction(initial_event.availability.end_at, availability.end_at)
+            availability.save!
           end
+        rescue ActiveRecord::RecordNotFound
+          failed_ids.push recurrent_event_id
         end
       end
 
-      if failed_ids.size > 0
-        puts "WARNING: The events with IDs #{failed_ids} were not found.\n These were initial events of a recurrence.\n\n You may have to correct the following events manually (IDs): "
-        puts "#{Event.where(recurrence_id: failed_ids).map(&:id)}"
+      if failed_ids.size.positive?
+        puts "WARNING: The events with IDs #{failed_ids} were not found.\n These were initial events of a recurrence.\n\n" \
+             "You may have to correct the following events manually (IDs): #{Event.where(recurrence_id: failed_ids).map(&:id)}"
       end
     end
 
-    desc 'reset slug in events categories'
+    desc '[release 2.6.6] reset slug in events categories'
     task categories_slugs: :environment do
       Category.all.each do |cat|
-        `curl -XPOST http://#{ENV["ELASTICSEARCH_HOST"]}:9200/stats/event/_update_by_query?conflicts=proceed\\&refresh\\&wait_for_completion -d '
+        `curl -XPOST http://#{ENV['ELASTICSEARCH_HOST']}:9200/stats/event/_update_by_query?conflicts=proceed\\&refresh\\&wait_for_completion -d '
         {
           "script": {
             "source": "ctx._source.subType = params.slug",
@@ -106,5 +116,14 @@ namespace :fablab do
         }';`
       end
     end
+
+    desc '[release 2.4.10] set slugs to plans'
+    task set_plans_slugs: :environment do
+      # this will maintain compatibility with existing statistics
+      Plan.all.each do |p|
+        p.slug = p.stp_plan_id
+        p.save
+      end
+    end
   end
 end
diff --git a/lib/tasks/fablab/maintenance.rake b/lib/tasks/fablab/maintenance.rake
new file mode 100644
index 000000000..ae09b4dd3
--- /dev/null
+++ b/lib/tasks/fablab/maintenance.rake
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+# Maintenance tasks
+namespace :fablab do
+  namespace :maintenance do
+    desc 'Regenerate the invoices PDF'
+    task :regenerate_invoices, %i[year month] => :environment do |_task, args|
+      year = args.year || Time.now.year
+      month = args.month || Time.now.month
+      start_date = Time.new(year.to_i, month.to_i, 1)
+      end_date = start_date.next_month
+      puts "-> Start regenerate the invoices PDF between #{I18n.l start_date, format: :long} in " \
+         " #{I18n.l end_date - 1.minute, format: :long}"
+      invoices = Invoice.only_invoice
+                        .where('created_at >= :start_date AND created_at < :end_date', start_date: start_date, end_date: end_date)
+                        .order(created_at: :asc)
+      invoices.each(&:regenerate_invoice_pdf)
+      puts '-> Done'
+    end
+
+    desc 'recreate every versions of images'
+    task build_images_versions: :environment do
+      Project.find_each do |project|
+        if project.project_image.present? && project.project_image.attachment.present?
+          project.project_image.attachment.recreate_versions!
+        end
+      end
+      ProjectStepImage.find_each do |project_step_image|
+        project_step_image.attachment.recreate_versions! if project_step_image.present? && project_step_image.attachment.present?
+      end
+      Machine.find_each do |machine|
+        machine.machine_image.attachment.recreate_versions! if machine.machine_image.present?
+      end
+      Event.find_each do |event|
+        event.event_image.attachment.recreate_versions! if event.event_image.present?
+      end
+    end
+
+    desc 'generate fixtures from db'
+    task generate_fixtures: :environment do
+      Rails.application.eager_load!
+      ActiveRecord::Base.descendants.reject { |c| [ActiveRecord::SchemaMigration, PartnerPlan].include? c }.each do |ar_base|
+        p "========== #{ar_base} =============="
+        ar_base.dump_fixtures
+      end
+    end
+
+  end
+end
diff --git a/lib/tasks/fablab/openlab.rake b/lib/tasks/fablab/openlab.rake
index a1e78bf79..053042430 100644
--- a/lib/tasks/fablab/openlab.rake
+++ b/lib/tasks/fablab/openlab.rake
@@ -1,3 +1,6 @@
+# frozen_string_literal: true
+
+# OpenLab Projects tasks
 namespace :fablab do
   namespace :openlab do
     desc 'bulk and export projects to openlab'
diff --git a/lib/tasks/fablab/stripe.rake b/lib/tasks/fablab/stripe.rake
new file mode 100644
index 000000000..85e7e3e21
--- /dev/null
+++ b/lib/tasks/fablab/stripe.rake
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+# Stripe relative tasks
+namespace :fablab do
+  namespace :stripe do
+
+    desc 'Cancel stripe subscriptions'
+    task cancel_subscriptions: :environment do
+      Subscription.where('expiration_date >= ?', Time.now.at_beginning_of_day).each do |s|
+        puts "-> Start cancel subscription of #{s.user.email}"
+        s.cancel
+        puts '-> Done'
+      end
+    end
+
+    desc 'find any invoices with incoherent total between stripe and DB'
+    task :find_incoherent_invoices, [:start_date] => :environment do |_task, args|
+      date = Date.parse('2017-05-01')
+      if args.start_date
+        begin
+          date = Date.parse(args.start_date)
+        rescue ArgumentError => e
+          raise e
+        end
+      end
+      Invoice.where('created_at > ? AND stp_invoice_id IS NOT NULL', date).each do |invoice|
+        stp_invoice = Stripe::Invoice.retrieve(invoice.stp_invoice_id)
+        next if invoice.amount_paid == stp_invoice.total
+
+        puts "Id: #{invoice.id}, reference: #{invoice.reference}, stripe id: #{stp_invoice.id}, " \
+             "invoice total: #{invoice.amount_paid / 100.0}, stripe invoice total: #{stp_invoice.total / 100.0}, " \
+             "date: #{invoice.created_at}"
+      end
+    end
+
+
+    desc 'clean stripe secrets from VCR cassettes'
+    task clean_cassettes_secrets: :environment do
+      Dir['test/vcr_cassettes/*.yml'].each do |cassette_file|
+        cassette = File.read(cassette_file)
+        cassette = cassette.gsub(Rails.application.secrets.stripe_api_key, 'sk_test_testfaketestfaketestfake')
+        cassette = cassette.gsub(Rails.application.secrets.stripe_publishable_key, 'pk_test_faketestfaketestfaketest')
+        puts cassette
+        File.write(cassette_file, cassette)
+      end
+    end
+  end
+end