module Main

# File lib/main.rb, line 33
def handle_add(description)
  if description.empty?
    WarningHelper.print_add_description_is_required
  else
    todos_controller.add_todo description.join(' ')
  end
end

# File lib/main.rb, line 59
def handle_delete(index)
  return WarningHelper.print_task_index_is_required if index.nil?
  if index.to_i <= 0
    return WarningHelper.print_task_index_not_positive_integer
  end

  todos_controller.delete_todo index.to_i
end

# File lib/main.rb, line 50
def handle_done(index)
  return WarningHelper.print_task_index_is_required if index.nil?
  if index.to_i <= 0
    return WarningHelper.print_task_index_not_positive_integer
  end

  todos_controller.complete_todo index.to_i
end

# File lib/main.rb, line 41
def handle_list(flag)
  case flag
  when nil then todos_controller.list_pending_todos
  when '--all' then todos_controller.list_all_todos
  else
    WarningHelper.print_flag_not_recognized(flag)
  end
end

# File lib/main.rb, line 14
def process_argv(arguments)
  method, *parameters = arguments

  case method
  when 'add' then handle_add parameters
  when 'list' then handle_list parameters[0]
  when 'done' then handle_done parameters[0]
  when 'delete' then handle_delete parameters[0]
  when nil then WarningHelper.print_method_is_required
  else
    # TODO: create --help, -h option/flag
    WarningHelper.print_command_not_recognized_or_missing method
  end
end

# File lib/main.rb, line 29
def todos_controller
  TodosController.new
end