<?php

namespace modules\users\views\register;

use Site;
use Users;
use Redirect;
use UsersAvatar;
use modules\users\views\AuthForm;

/**
 * Auth > Register > Social
 * @copyright Tamaranga
 */
class Social extends AuthForm
{
    public function init()
    {
        parent::init();

        $this->setTemplate('register/social', 'users');
    }

    public function data()
    {
        if ($this->request->user()) {
            return Users::redirectToAccountSettings();
        }

        $data = $this->socialData();
        # Данные о процессе регистрации через соц.сеть некорректны, причины:
        # 1) не удалось сохранить в сессии
        # 2) повторная попытка, вслед за успешной (случайный переход по ссылке)
        if (empty($data)) {
            return Redirect::to($this->registrationUrl('start'));
        }
        # Default user avatar
        if (empty($data['avatar'])) {
            $data['avatar'] = UsersAvatar::url(0, '');
        }

        $data['phone_on'] = $this->phoneOnly() || $this->phoneAndEmail();
        $data['agreement_on'] = $this->hasAgreement();
        $data['agreement_url'] = Users::url('agreement');
        $data['login_url'] = $this->loginUrl();
        $data['forgot_url'] = $this->forgotUrl(['social' => 1]);
        $data['site_title'] = Site::title('users.register.social');
        $data['title'] = _t('users', 'Registration via social network');

        return $data;
    }

    public function socialData()
    {
        return Users::social()->authData() ?: [];
    }

    public function validate($data = [])
    {
        $data = $this->validateUsingRules($data, [
            'email'        => [TYPE_NOTAGS, 'limit' => 100],
            'phone_number' => [TYPE_NOTAGS, 'limit' => 30],
            'agreement'    => [TYPE_BOOL],
        ]);

        do {
            # Email
            if (! empty($data['email'])) {
                if (! $this->validateEmail($data['email'])) {
                    break;
                }
                if ($this->isEmailExists($data['email'])) {
                    $this->respond('exists', true);
                    break;
                }
            } else {
                unset($data['email']);
            }

            # Phone
            if (mb_strlen($data['phone_number']) > 4) {
                if (! $this->validatePhone($data['phone_number'])) {
                    break;
                }
                if ($this->isPhoneExists($data['phone_number'])) {
                    $this->respond('exists', true);
                    break;
                }
            } else {
                unset($data['phone_number']);
            }

            # Agreement
            if (! $this->validateAgreement($data['agreement'])) {
                break;
            }
            unset($data['agreement']);
        } while (false);

        # Blocks validation
        if ($this->errors->no()) {
            $data = $this->validateBlocks($data);
        }

        return $data;
    }

    public function submit()
    {
        # User account exists => switch to "Login" flow
        $this->respond('exists', false);

        if ($this->request->user()) {
            # User already logined
            $this->errors->reloadPage();
            return parent::submit();
        }

        do {
            # Request
            if (!$this->security->validateReferer()) {
                $this->errors->reloadPage();
                break;
            }

            # Social data
            $social = $this->socialData();
            if (empty($social)) {
                # No social data (something went wrong)
                $this->errors->reloadPage();
                break;
            }

            # Fields validation
            $data = $this->validate();
            if ($this->errors->any()) {
                break;
            }
            # User account already exists (email or phone exists)
            if ($this->respond('exists')) {
                # Switch to "Login" flow
                break;
            }
            $data['name'] = $social['name'] ?? ''; # Name from social network
            $email = $data['email'] ?? '';
            $phone = $data['phone_number'] ?? '';

            # Create new user account + generate password
            $user = Users::userRegister($data);
            if (empty($user)) {
                $this->errors->set(_t('users', 'Registration error, contact the administrator'));
                break;
            }
            $userId = $user['user_id'];

            # Upload social account avatar
            if (! empty($social['avatar'])) {
                Users::avatar($userId)->uploadSocial($social['provider_id'], $social['avatar'], true);
            }

            # Link social account to user account
            Users::social()->authFinish($userId);

            # Activate user account without email confirmation
            if ($this->skipEmailConfirmation()) {
                # Activate
                if (! Users::userActivate($userId)) {
                    $this->errors->reloadPage();
                    break;
                }

                # Authenticate
                if (Users::authById($userId) !== true) {
                    $this->errors->reloadPage();
                    break;
                }

                # Send success registration notification
                if ($email) {
                    Users::sendAutoRegistrationNotification($userId, $data['name'], $email, $user['password']);
                }

                # Redirect to next step
                $this->respond('redirect', $this->registrationUrl('finished'));
                break;
            }

            # Send code (sms)
            if ($phone) {
                $activation = Users::getActivationInfo();
                if (Users::sms()->sendActivationCode($phone, $activation['key'])) {
                    Users::updateActivationKey($userId, $activation['key']);
                    # Save data for next step
                    $this->startData([
                        'id'       => $userId,
                        'password' => $user['password'],
                    ]);

                    # Redirect to "Phone confirmation" step
                    $this->respond('redirect', $this->registrationUrl('phone'));
                } else {
                    # Unable to send activation code (try again)
                    $this->errors->reloadPage();
                }
                break;
            }

            # Send email confirmation notification
            if ($email) {
                Users::sendEmailRegistrationConfirmation($userId, $email, $user['password'], $user['activate_link']);

                # Save data for next step
                $this->startData([
                    'id'            => $userId,
                    'password'      => $user['password'],
                    'activate_link' => $user['activate_link'],
                ]);

                # Redirect to next step
                $this->respond('redirect', $this->registrationUrl('emailed'));
                break;
            }

            # Phone or Email is required
            if ($this->phoneOnly() || $this->phoneAndEmail()) {
                $this->errors->set(_t('users', 'Enter your phone or email'));
            } elseif ($this->emailOnly()) {
                $this->errors->set(_t('users', 'Enter email'));
            } else {
                # Unknown step (something went wrong)
                $this->errors->impossible();
            }
        } while (false);

        return parent::submit();
    }

    public function skipEmailConfirmation()
    {
        return ! $this->config('users.register.social.email.activation', true, TYPE_BOOL);
    }
}