--- /dev/null
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Paypal enrolment plugin.
+ *
+ * This plugin allows you to set up paid courses.
+ *
+ * @package enrol_paypal
+ * @copyright 2010 Eugene Venter
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ * Paypal enrolment plugin implementation.
+ * @author Eugene Venter - based on code by Martin Dougiamas and others
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+class enrol_paypal_plugin extends enrol_plugin {
+
+ /**
+ * Add new instance of enrol plugin with default settings.
+ * @param object $course
+ * @return int id of new instance
+ */
+ public function add_default_instance($course) {
+ global $DB;
+
+ $exists = $DB->record_exists('enrol', array('courseid'=>$course->id, 'enrol'=>'paypal'));
+
+ $fields = array('enrolperiod'=>$this->get_config('enrolperiod', 0),
+ 'roleid'=>$this->get_config('roleid', 0),
+ 'cost'=>$this->get_config('cost', 0),
+ 'currency'=>$this->get_config('currency', 0)
+ );
+
+ $fields['status'] = $exists ? ENROL_INSTANCE_DISABLED : $this->get_config('status');
+
+ return $this->add_instance($course, $fields);
+ }
+
+ /**
+ * Returns link to page which may be used to add new instance of enrolment plugin in course.
+ * @param int $courseid
+ * @return moodle_url page url
+ */
+ public function get_candidate_link($courseid) {
+ if (!has_capability('moodle/course:enrolconfig', get_context_instance(CONTEXT_COURSE, $courseid, MUST_EXIST))) {
+ return NULL;
+ }
+ // multiple instances supported - different roles with different password
+ return new moodle_url('/enrol/paypal/addinstance.php', array('sesskey'=>sesskey(), 'id'=>$courseid));
+ }
+
+ /**
+ * Adds enrol instance UI to course edit form
+ *
+ * @param object $instance enrol instance or null if does not exist yet
+ * @param MoodleQuickForm $mform
+ * @param object $data
+ * @param object $context context of existing course or parent category if course does not exist
+ * @return void
+ */
+ public function course_edit_form($instance, MoodleQuickForm $mform, $data, $context) {
+
+ $i = isset($instance->id) ? $instance->id : 0;
+ $plugin = enrol_get_plugin('paypal');
+ $header = $plugin->get_instance_name($instance);
+ $config = has_capability('moodle/course:enrolconfig', $context);
+
+ $mform->addElement('header', 'enrol_paypal_header_'.$i, $header);
+
+
+ $options = array(ENROL_INSTANCE_ENABLED => get_string('yes'),
+ ENROL_INSTANCE_DISABLED => get_string('no'));
+ $mform->addElement('select', 'enrol_paypal_status_'.$i, get_string('status', 'enrol_paypal'), $options);
+ $mform->setDefault('enrol_paypal_status_'.$i, $this->get_config('status'));
+ $mform->setAdvanced('enrol_paypal_status_'.$i, $this->get_config('status_adv'));
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_status_'.$i);
+ }
+
+ $mform->addElement('text', 'enrol_paypal_cost_'.$i, get_string('cost', 'enrol_paypal'), array('size'=>4));
+ $mform->setDefault('enrol_paypal_cost_'.$i, $this->get_config('cost'));
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_cost_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_cost_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+ $paypalcurrencies = array( 'USD' => 'US Dollars',
+ 'EUR' => 'Euros',
+ 'JPY' => 'Japanese Yen',
+ 'GBP' => 'British Pounds',
+ 'CAD' => 'Canadian Dollars',
+ 'AUD' => 'Australian Dollars'
+ );
+ $mform->addElement('select', 'enrol_paypal_currency_'.$i, get_string('currency', 'enrol_paypal'), $paypalcurrencies);
+ $mform->setDefault('enrol_paypal_currency_'.$i, $this->get_config('currency'));
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_currency_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_currency_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+
+ if ($instance) {
+ $roles = get_default_enrol_roles($context, $instance->roleid);
+ } else {
+ $roles = get_default_enrol_roles($context, $this->get_config('roleid'));
+ }
+ $mform->addElement('select', 'enrol_paypal_roleid_'.$i, get_string('assignrole', 'enrol_paypal'), $roles);
+ $mform->setDefault('enrol_paypal_roleid_'.$i, $this->get_config('roleid'));
+ $mform->setAdvanced('enrol_paypal_roleid_'.$i, $this->get_config('roleid_adv'));
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_roleid_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_roleid_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+
+ $mform->addElement('duration', 'enrol_paypal_enrolperiod_'.$i, get_string('enrolperiod', 'enrol_paypal'), array('optional' => true, 'defaultunit' => 86400));
+ $mform->setDefault('enrol_paypal_enrolperiod_'.$i, $this->get_config('enrolperiod'));
+ $mform->setAdvanced('enrol_paypal_enrolperiod_'.$i, $this->get_config('enrolperiod_adv'));
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_enrolperiod_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_enrolperiod_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+
+ $mform->addElement('date_selector', 'enrol_paypal_enrolstartdate_'.$i, get_string('enrolstartdate', 'enrol_paypal'), array('optional' => true));
+ $mform->setDefault('enrol_paypal_enrolstartdate_'.$i, 0);
+ $mform->setAdvanced('enrol_paypal_enrolstartdate_'.$i, 1);
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_enrolstartdate_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_enrolstartdate_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+
+ $mform->addElement('date_selector', 'enrol_paypal_enrolenddate_'.$i, get_string('enrolenddate', 'enrol_paypal'), array('optional' => true));
+ $mform->setDefault('enrol_paypal_enrolenddate_'.$i, 0);
+ $mform->setAdvanced('enrol_paypal_enrolenddate_'.$i, 1);
+ if (!$config) {
+ $mform->hardFreeze('enrol_paypal_enrolenddate_'.$i);
+ } else {
+ $mform->disabledIf('enrol_paypal_enrolenddate_'.$i, 'enrol_paypal_status_'.$i, 'noteq', ENROL_INSTANCE_ENABLED);
+ }
+
+
+ // now add all values from enrol table
+ if ($instance) {
+ foreach($instance as $key=>$val) {
+ $data->{'enrol_paypal_'.$key.'_'.$i} = $val;
+ }
+ }
+ }
+
+ /**
+ * Validates course edit form data
+ *
+ * @param object $instance enrol instance or null if does not exist yet
+ * @param array $data
+ * @param object $context context of existing course or parent category if course does not exist
+ * @return array errors array
+ */
+ public function course_edit_validation($instance, array $data, $context) {
+ $errors = array();
+
+ if (!has_capability('moodle/course:enrolconfig', $context)) {
+ // we are going to ignore the data later anyway, they would not be able to fix the form anyway
+ return $errors;
+ }
+
+ $i = isset($instance->id) ? $instance->id : 0;
+
+ if ($data['enrol_paypal_status_'.$i] == ENROL_INSTANCE_ENABLED) {
+ if (!empty($data['enrol_paypal_enrolenddate_'.$i]) and $data['enrol_paypal_enrolenddate_'.$i] < $data['enrol_paypal_enrolstartdate_'.$i]) {
+ $errors['enrol_paypal_enrolenddate_'.$i] = get_string('enrolenddaterror', 'enrol_paypal');
+ }
+
+ if (!is_numeric($data['enrol_paypal_cost_'.$i])) {
+ $errors['enrol_paypal_cost_'.$i] = get_string('costerror', 'enrol_paypal');
+
+ }
+ }
+
+ return $errors;
+ }
+
+
+ /**
+ * Called after updating/inserting course.
+ *
+ * @param bool $inserted true if course just inserted
+ * @param object $course
+ * @param object $data form data
+ * @return void
+ */
+ public function course_updated($inserted, $course, $data) {
+ global $DB;
+
+ $context = get_context_instance(CONTEXT_COURSE, $course->id);
+
+ if (has_capability('moodle/course:enrolconfig', $context)) {
+ if ($inserted) {
+ if (isset($data->enrol_paypal_status_0)) {
+ $fields = array('status'=>$data->enrol_paypal_status_0);
+ if ($fields['status'] == ENROL_INSTANCE_ENABLED) {
+ $fields['cost'] = $data->enrol_paypal_cost_0;
+ $fields['currency'] = $data->enrol_paypal_currency_0;
+ $fields['roleid'] = $data->enrol_paypal_roleid_0;
+ $fields['enrolperiod'] = $data->enrol_paypal_enrolperiod_0;
+ $fields['enrolstartdate'] = $data->enrol_paypal_enrolstartdate_0;
+ $fields['enrolenddate'] = $data->enrol_paypal_enrolenddate_0;
+ } else {
+ $fields['roleid'] = $this->get_config('roleid');
+ $fields['cost'] = $this->get_config('cost');
+ $fields['currency'] = $this->get_config('currency');
+ $fields['enrolperiod'] = $this->get_config('enrolperiod');
+ $fields['enrolstartdate'] = 0;
+ $fields['enrolenddate'] = 0;
+ }
+ $this->add_instance($course, $fields);
+ }
+
+ } else {
+ $instances = $DB->get_records('enrol', array('courseid'=>$course->id, 'enrol'=>'paypal'));
+ foreach ($instances as $instance) {
+ $i = $instance->id;
+
+ if (isset($data->{'enrol_paypal_status_'.$i})) {
+ $instance->status = $data->{'enrol_paypal_status_'.$i};
+ $instance->timemodified = time();
+ if ($instance->status == ENROL_INSTANCE_ENABLED) {
+ $instance->roleid = $data->{'enrol_paypal_roleid_'.$i};
+ $instance->cost = $data->{'enrol_paypal_cost_'.$i};
+ $instance->currency = $data->{'enrol_paypal_currency_'.$i};
+ $instance->enrolperiod = $data->{'enrol_paypal_enrolperiod_'.$i};
+ $instance->enrolstartdate = $data->{'enrol_paypal_enrolstartdate_'.$i};
+ $instance->enrolenddate = $data->{'enrol_paypal_enrolenddate_'.$i};
+ }
+ $DB->update_record('enrol', $instance);
+ }
+ }
+ }
+
+ } else {
+ if ($inserted) {
+ if ($this->get_config('defaultenrol')) {
+ $this->add_default_instance($course);
+ }
+ } else {
+ // bad luck, user can not change anything
+ }
+ }
+ }
+
+
+ /**
+ * Creates course enrol form, checks if form submitted
+ * and enrols user if necessary. It can also redirect.
+ *
+ * @param stdClass $instance
+ * @return string html text, usually a form in a text box
+ */
+ function enrol_page_hook(stdClass $instance) {
+ global $CFG, $USER, $OUTPUT, $PAGE, $DB;
+
+ ob_start();
+
+ if ($DB->record_exists('user_enrolments', array('userid'=>$USER->id, 'enrolid'=>$instance->id))) {
+ return ob_get_clean();
+ }
+
+ if ($instance->enrolstartdate != 0 && $instance->enrolstartdate > time()) {
+ return ob_get_clean();
+ }
+
+ if ($instance->enrolenddate != 0 && $instance->enrolenddate < time()) {
+ return ob_get_clean();
+ }
+
+ $course = $DB->get_record('course', array('id'=>$instance->courseid));
+
+ $strloginto = get_string("loginto", "", $course->shortname);
+ $strcourses = get_string("courses");
+
+ $context = get_context_instance(CONTEXT_COURSE, $course->id);
+ // Pass $view=true to filter hidden caps if the user cannot see them
+ if ($users = get_users_by_capability($context, 'moodle/course:update', 'u.*', 'u.id ASC',
+ '', '', '', '', false, true)) {
+ $users = sort_by_roleassignment_authority($users, $context);
+ $teacher = array_shift($users);
+ } else {
+ $teacher = false;
+ }
+
+ if ( (float) $instance->cost <= 0 ) {
+ $cost = (float) $this->get_config('cost');
+ } else {
+ $cost = (float) $instance->cost;
+ }
+
+ if (abs($cost) < 0.01) { // no cost, other enrolment methods (instances) should be used
+ echo '<p>'.get_string('nocost', 'enrol_paypal').'</p>';
+ } else {
+
+ if ($USER->username == 'guest') { // force login only for guest user, not real users with guest role
+ if (empty($CFG->loginhttps)) {
+ $wwwroot = $CFG->wwwroot;
+ } else {
+ // This actually is not so secure ;-), 'cause we're
+ // in unencrypted connection...
+ $wwwroot = str_replace("http://", "https://", $CFG->wwwroot);
+ }
+ echo '<div class="mdl-align"><p>'.get_string('paymentrequired').'</p>';
+ echo '<p><b>'.get_string('cost').": $CFG->enrol_currency $cost".'</b></p>';
+ echo '<p><a href="'.$wwwroot.'/login/">'.get_string('loginsite').'</a></p>';
+ echo '</div>';
+ } else {
+ //Sanitise some fields before building the PayPal form
+ $coursefullname = $course->fullname;
+ $courseshortname = $course->shortname;
+ $userfullname = fullname($USER);
+ $userfirstname = $USER->firstname;
+ $userlastname = $USER->lastname;
+ $useraddress = $USER->address;
+ $usercity = $USER->city;
+
+ include($CFG->dirroot.'/enrol/paypal/enrol.html');
+ }
+
+ }
+
+ return $OUTPUT->box(ob_get_clean());
+ } // enrol_page_hook
+
+} // class
--- /dev/null
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Paypal enrolments plugin settings and presets.
+ *
+ * @package enrol_paypal
+ * @copyright 2010 Eugene Venter
+ * @author Eugene Venter - based on code by Petr Skoda and others
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+if ($ADMIN->fulltree) {
+
+ //--- settings ------------------------------------------------------------------------------------------
+ $settings->add(new admin_setting_heading('enrol_paypal_settings', '', get_string('pluginname_desc', 'enrol_paypal')));
+
+ $settings->add(new admin_setting_configtext('enrol_paypal/paypalbusiness', get_string('businessemail', 'enrol_paypal'), get_string('businessemail_desc', 'enrol_paypal'), '', PARAM_EMAIL));
+
+ $settings->add(new admin_setting_configcheckbox('enrol_paypal/mailstudents', get_string('mailstudents', 'enrol_paypal'), '', 0));
+
+ $settings->add(new admin_setting_configcheckbox('enrol_paypal/mailteachers', get_string('mailteachers', 'enrol_paypal'), '', 0));
+
+ $settings->add(new admin_setting_configcheckbox('enrol_paypal/mailadmins', get_string('mailadmins', 'enrol_paypal'), '', 0));
+
+ //--- enrol instance defaults ----------------------------------------------------------------------------
+ $settings->add(new admin_setting_heading('enrol_paypal_defaults',
+ get_string('enrolinstancedefaults', 'admin'), get_string('enrolinstancedefaults_desc', 'admin')));
+
+ $settings->add(new admin_setting_configtext('enrol_paypal/cost', get_string('cost', 'enrol_paypal'), '', 0, PARAM_FLOAT, 4));
+
+ $paypalcurrencies = array( 'USD' => 'US Dollars',
+ 'EUR' => 'Euros',
+ 'JPY' => 'Japanese Yen',
+ 'GBP' => 'British Pounds',
+ 'CAD' => 'Canadian Dollars',
+ 'AUD' => 'Australian Dollars'
+ );
+
+ $settings->add(new admin_setting_configselect('enrol_paypal/currency', get_string('currency', 'enrol_paypal'), '', 'idnumber', $paypalcurrencies));
+
+ $settings->add(new admin_setting_configcheckbox('enrol_paypal/defaultenrol',
+ get_string('defaultenrol', 'enrol'), get_string('defaultenrol_desc', 'enrol'), 0));
+
+ $options = array(ENROL_INSTANCE_ENABLED => get_string('yes'),
+ ENROL_INSTANCE_DISABLED => get_string('no'));
+ $settings->add(new admin_setting_configselect_with_advanced('enrol_paypal/status',
+ get_string('status', 'enrol_paypal'), get_string('status_desc', 'enrol_paypal'),
+ array('value'=>ENROL_INSTANCE_DISABLED, 'adv'=>false), $options));
+
+ if (!during_initial_install()) {
+ $options = get_default_enrol_roles(get_context_instance(CONTEXT_SYSTEM));
+ $student = get_archetype_roles('student');
+ $student = reset($student);
+ $settings->add(new admin_setting_configselect_with_advanced('enrol_paypal/roleid',
+ get_string('defaultrole', 'enrol_paypal'), get_string('defaultrole_desc', 'enrol_paypal'),
+ array('value'=>$student->id, 'adv'=>false), $options));
+ }
+
+ $settings->add(new admin_setting_configtext_with_advanced('enrol_paypal/enrolperiod',
+ get_string('enrolperiod', 'enrol_paypal'), get_string('enrolperiod_desc', 'enrol_paypal'),
+ array('value'=>0, 'adv'=>true), PARAM_INT));
+}
