# Library to perform System Checks
#
# Every Check is implemented as its own class inherited from SystemCheck::BaseCheck
# Execution coordination and boilerplate output is done by the SystemCheck::SimpleExecutor
#
# This structure decouples checks from Rake tasks and facilitates unit-testing
module SystemCheck
  # Executes a bunch of checks for specified component
  #
  # @param [String] component name of the component relative to the checks being executed
  # @param [Array<BaseCheck>] checks classes of corresponding checks to be executed in the same order
  # @param [BaseExecutor] executor_klass optionally specifiy a different executor class
  def self.run(component, checks = [], executor_klass = SimpleExecutor)
    unless executor_klass < BaseExecutor
      raise ArgumentError, 'Invalid executor'
    end

    prepare(component, checks, executor_klass).execute
  end

  def self.prepare(component, checks = [], executor_klass = SimpleExecutor)
    executor = executor_klass.new(component)
    checks.each do |check|
      executor << check
    end

    executor
  end
  private_class_method :prepare
end