<?php

namespace App\User\ForgotPassword;

use Qs_ViewController;
use Qs_SiteMap;
use Qs_Http;
use Qs_Request;
use App\User\Auth;
use App_Settings_Obj as SettingsObj;

/**
 * @method Obj _getDataObj
 */
class View extends Qs_ViewController
{
    const MSG_CODE_ERROR   = 'msgCodeError';
    const MSG_CODE_EXPIRED = 'msgCodeExpired';
    const MSG_ACTIVATED    = 'msgPassActivated';

    protected $_actions = ['new', 'insert', 'edit', 'update'];
    protected $_messageTemplates = [
        'msgCodeError'     => 'Invalid Access Code',
        'msgCodeExpired'   => 'Access Code Expired',
        'msgPassActivated' => 'New password was set',
    ];
    protected $_settingsPrefix = 'forgotPasswordEmail';

    public function exec()
    {
        if (Auth::getInstance()->hasIdentity()) {
            Qs_Http::redirect(BASE_URL . '/' . Qs_SiteMap::getAliasByItem('User\\'));
        }

        $this->_defaultAction = $this->getConfig('defaultAction');

        return parent::exec();
    }

    protected function _getNewForm(array $options = [])
    {
        $form = parent::_getNewForm($options);
        $form->getElement('email')->addValidator('callback', true, [
            'callback' => [$this->_getDataObj(), 'isValidEmail'],
            'messages' => 'User with %value% email is not registered or not approved by the website administrator.',
        ]);
        return $form;
    }

    protected function _doInsert()
    {
        $form = $this->_getNewForm();

        if ($form->validate()) {
            $this->_getDataObj()->setPrimaryKeyByEmail($form->getValue('email'));
            $data = $this->_getDataObj()->getData();
            $expirationTime = time() + 86400; // 24 hours
            $recoverCode = md5('code' . rand(0, 100) . time());
            $this->_getDataObj()->setRecoverCode($recoverCode, date('Y-m-d H:i:s', $expirationTime));
            $data['expirationTime'] = $expirationTime;
            $data['recoverCode'] = $recoverCode;
            $this->_sendMail2User($data);
            $this->redirect($this->url() . '/sent.html');
        } else {
            $this->_addFormItem($form);
        }
        return $this;
    }

    protected function _sendMail2User($data)
    {
        $subject = SettingsObj::get($this->_settingsPrefix . 'Subject');
        $from = SettingsObj::getEmailFrom($this->_settingsPrefix . 'From');
        $to = $data['email'];
        $body = SettingsObj::get($this->_settingsPrefix . 'Body');

        $mailData = [
            'firstName' => htmlspecialchars($data['firstName']),
            'lastName'  => htmlspecialchars($data['lastName']),
            'email'     => htmlspecialchars($data['email']),
        ];
        $mailData['recoverCodeExpirationDate'] = date('m/d/Y g:i A', $data['expirationTime']);

        $pageUrl = Qs_SiteMap::findFirst(
            null,
            ['type' => 'User\\ForgotPassword\\'],
            ['defaultAction' => 'edit'],
            'url'
        );
        $mailData['link'] = $pageUrl . '?action=edit&amp;code=' . rawurlencode($data['recoverCode']);

        foreach ($mailData as $field => $value) {
            $body = str_replace('{' . $field . '}', $value, $body);
        }

        $this->_sendMail(compact('subject', 'from', 'to', 'body'));

        return $this;
    }

    /**
     * Verify recover code
     * @param string $recoverCode
     * @return bool|array
     */
    protected function _validateRecoverCode($recoverCode = null)
    {
        $errors = [];

        if (null === $recoverCode) {
            $recoverCode = Qs_Request::getRequestValue('code');
        }

        if (!$recoverCode) {
            $errors[] = $this->_createMessage(self::MSG_CODE_ERROR);
        } else {
            $this->_getDataObj()->setPrimaryKeyByRecoverCode($recoverCode);
            if (null === ($data = $this->_getDataObj()->getData())) {
                $errors[] = $this->_createMessage(self::MSG_CODE_ERROR);
            } else if (strtotime($data['recoverCodeExpirationDate']) < time()) {
                $errors[] = $this->_createMessage(self::MSG_CODE_EXPIRED);
            }
        }
        return (empty($errors)) ? true : $errors;
    }

    protected function _doEdit()
    {
        $backUrl = Qs_SiteMap::findFirst(
            null,
            ['type' => 'User\\ForgotPassword\\'],
            ['defaultAction' => 'new'],
            'url'
        );
        $this->_setBackUrl($backUrl);

        $recoverCode = Qs_Request::getGetValue('code');

        /**
         * Якщо ми на прев’юві сторінки то не треба валідувати "$recoverCode" і показати форму.
         */
        if (!$this->_doc->isPagePreviewMode() && true !== ($errors = $this->_validateRecoverCode($recoverCode))) {
            $this->_setBackErrors($errors);
            $this->_doBack();
        }

        $form = $this->_getEditForm(['defaults' => ['code' => $recoverCode]]);
        $form->setDefaults();
        $this->_addFormItem($form);
        $this->_postEdit();

        return $this;
    }

    protected function _getFormOptions($type = null)
    {
        $options = parent::_getFormOptions($type);
        $options['attribs']['id'] = strtolower($this->getApplicationName()) . '-forgot-form';
        return $options;
    }

    protected function _doUpdateAjax()
    {
        if (true !== ($errors = $this->_validateRecoverCode())) {
            $data = ['isValid' => false, 'formErrors' => $errors];
        } else {
            $form = $this->_getEditForm();
            $data = $form->validateAjax();
        }
        $this->_displayJson($data);
    }

    protected function _doUpdate()
    {
        $this->_setBackUrl(BASE_URL_LANGUAGE . '/' . Qs_SiteMap::getAliasByItem('User\\Login\\'));

        if (true !== ($errors = $this->_validateRecoverCode())) {
            $this->_setBackErrors($errors);
            $this->_doBack();
        }

        if (null === $this->_getDataObj()->getData()) {
            $this->_setBackError(static::MSG_DATA_UNAVAILABLE);
            $this->_doBack();
        }

        $form = $this->_getEditForm();
        if ($form->validate()) {
            $this->_initFromForm($form);
            if (false === $this->_getDataObj()->update()) {
                $this->_setBackErrors($this->_getDataObj()->getErrors());
            } else {
                $this->_postUpdate();
                $this->_setBackMessage(static::MSG_ACTIVATED);
            }
            $this->_doBack();
        } else {
            $this->_addFormItem($form);
        }

        return $this;
    }

    protected function _initFromForm(\Qs_Form $form)
    {
        $data = $form->getValues();
        if ($this->_action == 'update') {
            $data['recoverCode'] = null;
            $data['recoverCodeExpirationDate'] = null;
        }
        $this->_getDataObj()->initFromForm($data);

        return $this;
    }
}