forms.php

<?php

class local_oauth_clients_form extends moodleform {

    function definition() {

        $bform =& $this->_form;
        $bform->addElement('hidden', 'action', 'add');
        $bform->setType('action', PARAM_ALPHANUMEXT);

        // Adding the "general" fieldset, where all the common settings are showed
        $bform->addElement('header', 'general', get_string('general', 'form'));

        $bform->addElement('text', 'client_id', get_string('client_id', 'local_oauth'), array('maxlength' => 80, 'size' => 45));
        $bform->addRule('client_id', null, 'required', null, 'client');
        $bform->setType('client_id', PARAM_TEXT);
        $bform->addHelpButton('client_id', 'client_id', 'local_oauth');

        $action = optional_param('action', false, PARAM_TEXT);
        if ($action === 'edit') {
            $id = required_param('id', PARAM_TEXT);
            $bform->addElement('hidden', 'id', $id);
            $bform->setType('id', PARAM_INT);
            $bform->hardFreeze('client_id');
        }

        $bform->addElement('text', 'redirect_uri', get_string('redirect_uri', 'local_oauth'), array('maxlength' => 1333, 'size' => 45));
        $bform->addRule('redirect_uri', null, 'required', null, 'client');
        $bform->setType('redirect_uri', PARAM_URL);
        $bform->addHelpButton('redirect_uri', 'redirect_uri', 'local_oauth');

        // Adding the rest of settings, spreading all them into this fieldset
        $bform->addElement('header', 'othersettings', get_string('othersettings', 'form'));
        $bform->setExpanded('othersettings', false);
        $bform->addElement('text', 'grant_types', get_string('grant_types', 'local_oauth'), array('maxlength' => 80, 'size' => 45));
        $bform->setType('grant_types', PARAM_TEXT);

        $bform->addElement('text', 'scope', get_string('scope', 'local_oauth'), array('maxlength' => 1333, 'size' => 45));
        $bform->setType('scope', PARAM_TEXT);

        $bform->addElement('text', 'user_id', get_string('user_id', 'local_oauth'), array('maxlength' => 80, 'size' => 45));
        $bform->setType('user_id', PARAM_INT);

        $this->add_action_buttons();

    }

    function validation($data, $files) {
        global $DB;

        $errors = parent::validation($data, $files);
        if ($DB->record_exists('oauth_clients', array('client_id' => $data['client_id']))) {
            $errors['client_id'] = get_string('client_id_existing_error', 'local_oauth');
        }

        return $errors;
    }
}

class local_oauth_clients_wp_form extends moodleform {

    function definition() {

        $bform =& $this->_form;
        $bform->addElement('hidden', 'action', 'addwordpress');
        $bform->setType('action', PARAM_ALPHANUMEXT);

        $bform->addElement('text', 'client_id', get_string('client_id', 'local_oauth'), array('maxlength' => 80, 'size' => 45));
        $bform->addRule('client_id', null, 'required', null, 'client');
        $bform->setType('client_id', PARAM_TEXT);
        $bform->addHelpButton('client_id', 'client_id', 'local_oauth');

        $bform->addElement('text', 'url', get_string('wp_url', 'local_oauth'), array('maxlength' => 1333, 'size' => 45));
        $bform->addRule('url', null, 'required', null, 'client');
        $bform->setType('url', PARAM_URL);

        $this->add_action_buttons();

    }

    function validation($data, $files) {
        global $DB;

        $errors = parent::validation($data, $files);
        if ($DB->record_exists('oauth_clients', array('client_id' => $data['client_id']))) {
            $errors['client_id'] = get_string('client_id_existing_error', 'local_oauth');
        }

        return $errors;
    }
}

class local_oauth_authorize_form extends moodleform {

    function definition() {

        $mform =& $this->_form;

        $client_id = required_param('client_id', PARAM_RAW);

        $text = get_string('auth_question', 'local_oauth', $client_id) . '<br />';
        $mform->addElement('html', $text);
        $scope = optional_param('scope', false, PARAM_TEXT);
        if (!empty($scope)) {
            $scopes = explode(' ', $scope);
            $text = get_string('auth_question_desc', 'local_oauth') . '<ul>';
            foreach ($scopes as $scope) {
                $text .= '<li>' . get_string('scope_' . $scope, 'local_oauth') . '</li>';
            }
            $text .= '</ul>';
        } else {
            $text = get_string('auth_question_login', 'local_oauth');
        }
        $mform->addElement('html', $text);

        $this->add_action_buttons(true, get_string('confirm'));
    }

}