<?php

namespace bff\validation\rules;

use config;
use bff\validation\Rule;
use bff\validation\HasLimits;

/**
 * Phone number rule
 * @copyright Tamaranga
 */
class Phone extends Rule
{
    use HasLimits;

    protected $pattern = '/[^0-9]/';

    /** @var bool|string Validate phone number country code */
    protected $codeFilter = true;

    protected function defaults($params)
    {
        $this->min = 8;
        $this->max = 30;

        if (is_array($params) && count($params) === 2 && isset($params[0]) && isset($params[1])) {
            $params = ['min' => min($params), 'max' => max($params)];
        }
        return $params;
    }

    /**
     * @param string $pattern
     * @return bool
     */
    protected function setPattern($pattern): bool
    {
        if (empty($pattern) || ! is_string($pattern)) {
            return false;
        }

        $this->pattern = $pattern;

        return true;
    }

    /**
     * Set regexp pattern
     * @param string $pattern
     * @return static
     */
    public function pattern($pattern)
    {
        $this->setPattern($pattern);

        return $this;
    }

    /**
     * Set country code filter
     * @param string|bool $filter
     * @return bool
     */
    protected function setCodeFilter($filter): bool
    {
        if (! is_string($filter) && $filter !== false) {
            return false;
        }
        $this->codeFilter = $filter;

        return true;
    }

    /**
     * Set country code filter
     * @param string|bool $filter
     * @return static
     */
    public function codeFilter($filter)
    {
        $this->setCodeFilter($filter);

        return $this;
    }

    public function check(&$value)
    {
        if (! empty($this->pattern)) {
            $value = trim(preg_replace($this->pattern, '', $this->toString($value)));
        }

        # Country code filter
        if ($this->codeFilter === true) {
            $codeFilter = config::get('input.phone.validate.code.filter', '', TYPE_TEXT);
        } else {
            $codeFilter = $this->codeFilter;
        }
        if (is_string($codeFilter) && ! empty($codeFilter)) {
            $filter = explode(',', $codeFilter);
            if (! empty($filter)) {
                foreach ($filter as $k => &$v) {
                    $v = preg_replace('/[^0-9]/', '', $v);
                    if (empty($v)) {
                        unset($filter[$k]);
                    }
                } unset($v);
            }
            if (! empty($filter)) {
                $result = false;
                foreach ($filter as $v) {
                    if (mb_strpos($value, $v) === 0) {
                        $result = true;
                        break;
                    }
                }
                if (! $result) {
                    return false;
                }
            }
        }

        if ($this->min > 0 && mb_strlen($value) < $this->min) {
            return false;
        }
        if ($this->max > 0 && mb_strlen($value) > $this->max) {
            return false;
        }
        return true;
    }

    /**
     * Default message
     * @return string
     */
    public function defaultMessage(): string
    {
        return _t('error', 'The [attribute] must be a valid phone number');
    }
}