<?php

namespace App\Form;

/**
 * Models
 */
use App\Model\Data\User as UserModel;

/**
 * Phalcon Form
 */
use Phalcon\Forms\Form as FormBase,
    Phalcon\Forms\Element as FormElement;

/**
 * Element types
 */
use Phalcon\Forms\Element\Text,
    Phalcon\Forms\Element\Password,
    Phalcon\Forms\Element\Submit;

/**
 * Validators
 */
use Phalcon\Validation\Validator\Callback as CallbackValidator,
    Phalcon\Validation\Validator\Uniqueness as UniquenessValidator,
    Phalcon\Validation\Validator\Alnum as AlnumValidator,
    Phalcon\Validation\Validator\PresenceOf as PresenceOfValidator,
    Phalcon\Validation\Validator\Email as EmailValidator,
    Phalcon\Validation\Validator\Confirmation as ConfirmationValidator,
    Phalcon\Validation\Validator\StringLength as StringLengthValidator,
    Phalcon\Validation\Validator\Identical as IdenticalValidator,
    Httpcb\Validation\Validator\Alpha as AlphaValidator;


class UserSettings extends FormBase
{
    public function initialize()
    {
        $this->setValidation(new \Phalcon\Validation());

        // Id
        $id = new Text('id', array(
            'class' => 'form-control',
            'readonly' => '',
        ));
        $id->addValidator(new IdenticalValidator([
            'accepted' => $this->getEntity()->getId(),
        ]));

        $id->setLabel('ID');
        $this->add($id);

        // Username
        $username = new Text('username', array(
            'class' => 'form-control',
            'placeholder' => 'Username',
        ));

        $username->setLabel('Username');

        $username->addValidator(new AlnumValidator());

        $validator = new UniquenessValidator(array(
            'model'     => new UserModel(),
            'message'   => 'The username already exists.',
            'attribute' => 'username',
            'except'    => [ $this->getEntity()->getUsername() ]
        ));

        $username->addValidator($validator);

        $this->add($username);

        // Name
        $name = new Text('name', array(
            'class' => 'form-control',
            'placeholder' => 'Name',
        ));

        $name->setLabel('Name');
        $name->addValidator(new AlphaValidator([
            'allowSpace' => true,
            'allowEmpty' => true,
        ]));

        $this->add($name);

        // Email
        $email = new Text('email', array(
            'class' => 'form-control',
            'placeholder' => 'Email',
            'readonly' => '',
        ));

        $email->addValidator(new IdenticalValidator([
            'accepted' => $this->getEntity()->getEmail(),
        ]));

        $email->setLabel('Email');

        $this->add($email);

        // Passwords
        $this->_passwords();

        // Submit
        $submit = new Submit('Save', array('class' => 'button button-default'));
        $this->add($submit);
    }

    /**
     * Password section
     */
    protected function _passwords()
    {
        $current_pw = $this->getEntity()->getPassword();

        // Current
        if (strlen($current_pw) > 0) {
            $current = new Password('passwordCurrent', array(
                'class' => 'form-control',
            ));
            $current->setLabel('Current password');
            $this->add($current);
        }

        // New
        $new = new Password('passwordNew', array(
            'class' => 'form-control',
        ));
        $new->setLabel('New password');
        $this->add($new);

        // Confirm
        $confirm = new Password('passwordConfirm', array(
            'class' => 'form-control',
        ));
        $confirm->setLabel('Confirm');
        $this->add($confirm);

        // Validation
        $validation = $this->getValidation();

        if (strlen($current_pw) > 0) {
            $validation->add('passwordCurrent', new CallbackValidator([
                'callback' => function($data) {
                    $new_pw = $data['passwordNew'];
                    if (strlen($new_pw) > 0) {
                        $value = $data['passwordCurrent'];
                        $hash = $this->getEntity()->getPassword();

                        // Only fail if there is a password and they did not match.
                        if (strlen($hash) > 0 && password_verify($value, $hash) === false) {
                            return false;
                        }
                    }
                    return true;
                },
                'message' => 'Password is not valid.'
            ]));
        }

        $validation->add('passwordNew', new StringLengthValidator([
            'allowEmpty' => true,
            'min' => 8,
            'messageMinimum' => 'Password must be atleast 8 characters long',
        ]));

        $validation->add('passwordConfirm', new ConfirmationValidator([
            'message' => 'Passwords does not match',
            'with' => 'passwordNew',
        ]));
    }

    public function renderDecorated($name, $opt = [])
    {
        $options = [
            'label-class' => 'control-label',
            'class' => 'col-sm-10',
            'message' => ''
        ];

        $ele = $this->get($name);

        if (isset($opt['label-length'])) {
            $length = (int) $opt['label-length'];
        } else {
            $length = 2;
        }
        $options['label-class'] .= ' col-sm-' . $length;

        if (isset($opt['length'])) {

            $len = $opt['length'];

            if ($len === 'full') {
                $options['class'] = '';
            } else {
                $options['class'] = 'col-sm-' . $opt['length'];
            }
        }

        if ($ele->hasMessages()) {
            $options['class'] .= ' has-error';
            $options['message'] = $ele->getMessages()->current();
        }

        return $this->_render($ele, $options);
    }

    protected function _render(FormElement $ele, $opt)
    {
        $xhtml = '';

        if (strlen($ele->getLabel()) > 0) {

            $xhtml .= sprintf(
                '<label class="%s" for="%s">%s</label>',
                $opt['label-class'], $ele->getName(), $ele->getLabel());
        }

        $xhtml .= '<div class="' . $opt['class'] . '">'
            . $ele->render();

        if (strlen($opt['message']) > 0)  {
            $xhtml .= '<span class="help-block">' . $opt['message'] . '</span>';
        }

        $xhtml .= '</div>';

        return $xhtml;
    }
}