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# frozen_string_literal: true
module IncidentManagement
module IssuableEscalationStatuses
class PrepareUpdateService
include Gitlab::Utils::StrongMemoize
SUPPORTED_PARAMS = %i[status].freeze
InvalidParamError = Class.new(StandardError)
def initialize(issuable, current_user, params)
@issuable = issuable
@current_user = current_user
@params = params.dup || {}
@project = issuable.project
end
def execute
return availability_error unless available?
filter_unsupported_params
filter_attributes
filter_redundant_params
ServiceResponse.success(payload: { escalation_status: params })
rescue InvalidParamError
invalid_param_error
end
private
attr_reader :issuable, :current_user, :params, :project
def available?
Feature.enabled?(:incident_escalations, project) &&
user_has_permissions? &&
issuable.supports_escalation? &&
escalation_status.present?
end
def user_has_permissions?
current_user&.can?(:update_escalation_status, issuable)
end
def escalation_status
strong_memoize(:escalation_status) do
issuable.escalation_status
end
end
def filter_unsupported_params
params.slice!(*supported_params)
end
def supported_params
SUPPORTED_PARAMS
end
def filter_attributes
filter_status
end
def filter_status
status = params.delete(:status)
return unless status
status_event = escalation_status.status_event_for(status)
raise InvalidParamError unless status_event
params[:status_event] = status_event
end
def filter_redundant_params
params.delete_if do |key, value|
current_params.key?(key) && current_params[key] == value
end
end
def current_params
strong_memoize(:current_params) do
{
status_event: escalation_status.status_event_for(escalation_status.status_name)
}
end
end
def availability_error
ServiceResponse.error(message: 'Escalation status updates are not available for this issue, user, or project.')
end
def invalid_param_error
ServiceResponse.error(message: 'Invalid value was provided for a parameter.')
end
end
end
end
::IncidentManagement::IssuableEscalationStatuses::PrepareUpdateService.prepend_mod
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