GroupConfigTrait.php
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GroupConfigTrait.php
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	<?php

	namespace App\Traits;

	trait GroupConfigTrait
	{
	/**
	* A helper to get the group configuration.
	*/
	public function getConfig(): array
	{
	$config = [];

	$sp = $this->getSetting('sender_policy');

	$config['sender_policy'] = array_filter(
	$sp ? json_decode($sp, true) : [],
	static function ($item) {
	// remove the special "-" entry, it's an implementation detail
	return $item !== '-';
	}
	);

	return $config;
	}

	/**
	* A helper to update a group configuration.
	*
	* @param array $config An array of configuration options
	*
	* @return array A list of input validation errors
	*/
	public function setConfig(array $config): array
	{
	$errors = [];

	foreach ($config as $key => $value) {
	// validate and save SMTP sender policy entries
	if ($key === 'sender_policy') {
	if (!is_array($value)) {
	$value = (array) $value;
	}

	foreach ($value as $i => $v) {
	if (!is_string($v)) {
	$errors[$key][$i] = \trans('validation.sp-entry-invalid');
	}
	}

	if (empty($errors[$key])) {
	// remove empty entries, and '-' entry
	$value = array_filter($value, static function ($item) {
	return $item !== '' && $item !== '-';
	});

	if (!empty($value)) {
	$value[] = '-'; // Block anyone not on the list
	}

	$this->setSetting($key, json_encode($value));
	}
	} else {
	$errors[$key] = \trans('validation.invalid-config-parameter');
	}
	}

	return $errors;
	}
	}