<?php

use App\Service\Google\Geocoding;

class Qs_Validate_Google_Geocoding extends Zend_Validate_Abstract
{
    const WRONG_ADDRESS = 'wrongAddress';
    const EMPTY_CONTEXT     = 'emptyContext';
    const EMPTY_ADDR_FIELDS = 'emptyAddressFields';
    const GEO_ERROR = 'geoError';

    protected $_messageTemplates = array(
        self::WRONG_ADDRESS => 'The geographical coordinates can\'t be determined for the specified address criteria.',
        self::EMPTY_CONTEXT     => 'Form context is empty',
        self::EMPTY_ADDR_FIELDS => 'Address fields is empty',
        self::GEO_ERROR => '%value%',
    );

    /** @var array */
    protected $_addressFields = null;

    function __construct($options = null)
    {
        if ($options instanceof Zend_Config) {
            $options = $options->toArray();
        }
        if ($options && is_array($options)) {
            $this->setOptions($options);
        }
        return $this;
    }

    public function setOptions($options)
    {
        if (isset($options['options'])) {
            unset($options['options']);
        }
        foreach ($options as $key => $value) {
            $method = 'set' . ucfirst($key);
            if (method_exists($this, $method)) {
                $this->$method($value);
            }
        }
        return $this;
    }

    public function setAddressFields(array $fields)
    {
        $this->_addressFields = $fields;
        return $this;
    }

    public function getAddressFields()
    {
        return $this->_addressFields;
    }

    public function isValid($value, array $context = null)
    {
        if (!is_array($context) ||  empty($context)) {
            $this->_error(self::EMPTY_CONTEXT, $value);
            return false;
        }

        $fields = $this->getAddressFields();
        if (!is_array($fields) ||  empty($fields)) {
            $this->_error(self::EMPTY_ADDR_FIELDS, $value);
            return false;
        }

        $data = [];
        foreach ($fields as $field) {
            $data[$field] = Qs_Array::get($context, $field);
        }
        array_filter($data);

        if (empty($data)) {
            return true;
        }

        $address = $data['address'];
        if ($data['address2']) {
            $address .= ', ' . $data['address2'];
        }
        $address .= ', ' . $data['city'];
        $address .= ', ' . $data['state'] . ' ' . $data['zip'];

        $geocoding = new Geocoding($address);
        if (!$geocoding->send()) {
            $this->_error(self::GEO_ERROR, $geocoding->getError());
            return false;
        }

        return true;
    }
}