# frozen_string_literal: true

module Ci
  class VariablesFinder
    def initialize(resource, params)
      @resource = resource
      @params = params

      raise ArgumentError, 'Please provide params[:key]' if params[:key].blank?
    end

    def execute
      variables = resource.variables
      variables = by_key(variables)
      by_environment_scope(variables)
    end

    private

    attr_reader :resource, :params

    def by_key(variables)
      variables.by_key(params[:key])
    end

    def by_environment_scope(variables)
      environment_scope = params.dig(:filter, :environment_scope)
      environment_scope.present? ? variables.by_environment_scope(environment_scope) : variables
    end
  end
end