Caridea\Validate\SwitchValidator

Complexity

Total Complexity

5

Size/Duplication

Total Lines	44
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	6	1
A	iterate()	0	12	4

<?php
declare(strict_types=1);
/**
 * Caridea
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 * @copyright 2015-2018 LibreWorks contributors
 * @license   Apache-2.0
 */
namespace Caridea\Validate;

/**
 * Chooses between validators based on object field value.
 *
 * @copyright 2015-2018 LibreWorks contributors
 * @license   Apache-2.0
 */
class SwitchValidator extends Validator
{
    /**
     * @var string Field name to inspect
     */
    protected $field;
    /**
     * @var Validator[] Associative array of field value to validator
     */
    protected $validators;
    
    /**
     * Creates a new switch validator.
     *
     * @param string Field name to inspect
     * @param array $validators Associative array of field value to validator
     */
    public function __construct(string $field, array $validators)
    {
        parent::__construct([]);
        $this->field = $field;
        $this->validators = $validators;
    }
    
    /**
     * Iterates over the ruleset and collects any error codes.
     *
     * @param object|array $values An object or associative array to validate
     * @return array Associative array of field name to error
     * @throws \InvalidArgumentException if `$values` is null or matching validator
     */
    protected function iterate($values): array
    {
        if (!is_object($values) && !is_array($values)) {
            throw new \InvalidArgumentException("Unable to validate provided object");
        }
        $value = $this->access($values, $this->field);
        if (!isset($this->validators[$value])) {
            throw new \InvalidArgumentException("No validator found for [{$this->field}] of '$value'");
        } else {
            return $this->validators[$value]->validate($values)->getErrors();
        }
    }
}