demarches-normaliennes/lib/tasks/deployment/20220316105857_delete_roles_without_users.rake
2024-08-22 09:26:48 +02:00

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# frozen_string_literal: true
namespace :after_party do
desc 'Deployment task: delete_roles_without_users'
task delete_roles_without_users: :environment do
rake_puts "Running deploy task 'delete_roles_without_users'"
# For now, deleting a user with any role (administrateur, instructeur or expert) is forbidden.
#
# However, in the past, some users with roles may have been deleted without the corresponding roles being
# also removed. This creates invalid roles, referenced by no users (but still referenced by other records).
#
# To prevent this situation, future database migrations will add more constraints on roles.
# But before adding constraints, we need to clean up any dangling role that may exist.
# Helper method
def raise_no_admin_error(service)
message = <<~EOE
Error while re-assigning Service \##{service.id} to another Administrateur.
We tried to re-assign the Service \##{service.id} to another Administrateur,
but none of the Procedures (#{service.procedures.pluck(:id)}) attached to this Service had other Administrateurs
to assign the service to.
Please fix the Service \##{service.id} manually (by assigning it to any valid administrator, for instance the
first one in your database), then run this task again.
EOE
raise RuntimeError, message
end
#
# Delete dangling administrateurs (administrateurs without an existing user)
#
rake_puts "\nFinding dangling administrateurs…"
dangling_administrateurs = Administrateur.where.missing(:user)
rake_puts "#{dangling_administrateurs.count} dangling administrateurs found."
if dangling_administrateurs.any?
# An administrateur can't be removed if it has services.
# For those services:
# - delete services not referenced by any procedure
# - re-assign the other services to the first admin of a procedure using this service
rake_puts " Removing or re-assigning their services…"
dangling_services = dangling_administrateurs.map(&:services).flatten
services_with_procedures, services_without_procedures = dangling_services.partition { |s| s.procedures.any? }
services_with_procedures.each do |service|
other_admins = service.procedures.flat_map(&:administrateurs).excluding(service.administrateur)
raise_no_admin_error(service) if other_admins.empty?
service.update!(administrateur: other_admins.first)
end
services_without_procedures.each(&:destroy)
rake_puts " #{services_with_procedures.length} services re-assigned, #{services_without_procedures.length} services destroyed."
# Now we can destroy dangling administrateurs
rake_puts " Destroying #{dangling_administrateurs.count} dangling administrateurs…"
deleted_records = dangling_administrateurs.destroy_all
rake_puts " #{deleted_records.length} dangling administrateurs destroyed."
end
#
# Delete dangling instructeurs (instructeurs without an existing user)
#
rake_puts "\nFinding dangling instructeurs…"
deleted_records = Instructeur.where.missing(:user).destroy_all
rake_puts "#{deleted_records.length} dangling instructeurs destroyed."
#
# Delete dangling experts (experts without an existing user)
#
rake_puts "\nFinding dangling experts…"
deleted_records = Expert.where.missing(:user).destroy_all
rake_puts "#{deleted_records.length} dangling experts destroyed."
# Update task as completed. If you remove the line below, the task will
# run with every deploy (or every time you call after_party:run).
AfterParty::TaskRecord
.create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
end
end