<?php
namespace nur\mapper\item;

use nur\mapper\base\Mapper;
use nur\mapper\base\mappers_command;
use nur\mapper\base\Tparams_command;

/**
 * Class GenericMapper_command: classe de support pour construire une instance
 * de mapper pour une application recevant des commandes utilisateurs
 */
class GenericMapper_command {
  use Tparams_command;

  static function get_def(): array {
    return [null, [
      "package\\Mapper",
      "help" => "appliquer un mapper générique",
    ], function(string $command): ?array {
      if (!is_subclass_of($command, Mapper::class)) return null;
      return [$command, "help" => "appliquer le mapper $command",
        "action" => [static::class, "create_command"],
        "cmd_args" => [
          "usage" => $command,
          ["-o", "--param", "args" => "value",
            "action" => [static::class, "add_params"],
            "help" => "spécifier une option générique",
          ],
        ],
      ];
    }];
  }

  /** @var Mapper */
  protected static $command;

  static function create_command($value, $name, $arg) {
    self::$command = mappers_command::add(new $arg());
  }
}