<?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/>.

/**
 * Badges external functions tests.
 *
 * @package    core_badges
 * @category   external
 * @copyright  2016 Juan Leyva <juan@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since      Moodle 3.1
 */

defined('MOODLE_INTERNAL') || die();

global $CFG;

require_once($CFG->dirroot . '/webservice/tests/helpers.php');
require_once($CFG->libdir . '/badgeslib.php');

/**
 * Badges external functions tests
 *
 * @package    core_badges
 * @category   external
 * @copyright  2016 Juan Leyva <juan@moodle.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since      Moodle 3.1
 */
class core_badges_external_testcase extends externallib_advanced_testcase {

    /**
     * Set up for every test
     */
    public function setUp() {
        global $DB;
        $this->resetAfterTest();
        $this->setAdminUser();

        // Setup test data.
        $this->course = $this->getDataGenerator()->create_course();

        // Create users.
        $this->student = self::getDataGenerator()->create_user();
        $this->teacher = self::getDataGenerator()->create_user();

        // Users enrolments.
        $this->studentrole = $DB->get_record('role', array('shortname' => 'student'));
        $this->teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
        $this->getDataGenerator()->enrol_user($this->student->id, $this->course->id, $this->studentrole->id, 'manual');
        $this->getDataGenerator()->enrol_user($this->teacher->id, $this->course->id, $this->teacherrole->id, 'manual');

        // Mock up a site badge.
        $now = time();
        $badge = new stdClass();
        $badge->id = null;
        $badge->name = "Test badge site";
        $badge->description = "Testing badges site";
        $badge->timecreated = $now - 12;
        $badge->timemodified = $now - 12;
        $badge->usercreated = $this->teacher->id;
        $badge->usermodified = $this->teacher->id;
        $badge->issuername = "Test issuer";
        $badge->issuerurl = "http://issuer-url.domain.co.nz";
        $badge->issuercontact = "issuer@example.com";
        $badge->expiredate = null;
        $badge->expireperiod = null;
        $badge->type = BADGE_TYPE_SITE;
        $badge->courseid = null;
        $badge->messagesubject = "Test message subject for badge";
        $badge->message = "Test message body for badge";
        $badge->attachment = 1;
        $badge->notification = 0;
        $badge->status = BADGE_STATUS_ACTIVE;
        $badge->version = '1';
        $badge->language = 'en';
        $badge->imageauthorname = 'Image author';
        $badge->imageauthoremail = 'imageauthor@example.com';
        $badge->imageauthorurl = 'http://image-author-url.domain.co.nz';
        $badge->imagecaption = 'Caption';

        $badgeid = $DB->insert_record('badge', $badge, true);
        $badge = new badge($badgeid);
        $badge->issue($this->student->id, true);

        // Hack the database to adjust the time each badge was issued.
        $DB->set_field('badge_issued', 'dateissued', $now - 11, array('userid' => $this->student->id, 'badgeid' => $badgeid));

        // Add an endorsement for the badge.
        $endorsement = new stdClass();
        $endorsement->badgeid = $badgeid;
        $endorsement->issuername = 'Issuer name';
        $endorsement->issuerurl = 'http://endorsement-issuer-url.domain.co.nz';
        $endorsement->issueremail = 'endorsementissuer@example.com';
        $endorsement->claimid = 'http://claim-url.domain.co.nz';
        $endorsement->claimcomment = 'Claim comment';
        $endorsement->dateissued = $now;
        $badge->save_endorsement($endorsement);

        // Add 2 alignments.
        $alignment = new stdClass();
        $alignment->badgeid = $badgeid;
        $alignment->targetname = 'Alignment 1';
        $alignment->targeturl = 'http://a1-target-url.domain.co.nz';
        $alignment->targetdescription = 'A1 target description';
        $alignment->targetframework = 'A1 framework';
        $alignment->targetcode = 'A1 code';
        $badge->save_alignment($alignment);

        $alignment->targetname = 'Alignment 2';
        $alignment->targeturl = 'http://a2-target-url.domain.co.nz';
        $alignment->targetdescription = 'A2 target description';
        $alignment->targetframework = 'A2 framework';
        $alignment->targetcode = 'A2 code';
        $badge->save_alignment($alignment);

        // Now a course badge.
        $badge->id = null;
        $badge->name = "Test badge course";
        $badge->description = "Testing badges course";
        $badge->type = BADGE_TYPE_COURSE;
        $badge->courseid = $this->course->id;

        $coursebadgeid = $DB->insert_record('badge', $badge, true);
        $badge = new badge($coursebadgeid);
        $badge->issue($this->student->id, true);

        // Hack the database to adjust the time each badge was issued.
        $DB->set_field('badge_issued', 'dateissued', $now - 11, array('userid' => $this->student->id, 'badgeid' => $coursebadgeid));

        // Make the site badge a related badge.
        $badge->add_related_badges(array($badgeid));
    }

    /**
     * Test get user badges.
     * These is a basic test since the badges_get_my_user_badges used by the external function already has unit tests.
     */
    public function test_get_my_user_badges() {

        $this->setUser($this->student);

        $badges = (array) badges_get_user_badges($this->student->id);
        $expectedbadges = array();
        $coursebadge = null;

        foreach ($badges as $badge) {
            $context = ($badge->type == BADGE_TYPE_SITE) ? context_system::instance() : context_course::instance($badge->courseid);
            $badge->badgeurl = moodle_url::make_webservice_pluginfile_url($context->id, 'badges', 'badgeimage', $badge->id, '/',
                                                                            'f1')->out(false);

            // Get the endorsement, alignments and related badges.
            $badgeinstance = new badge($badge->id);
            $endorsement = $badgeinstance->get_endorsement();
            $alignments = $badgeinstance->get_alignments();
            $relatedbadges = $badgeinstance->get_related_badges();
            $badge->alignment = array();
            $badge->relatedbadges = array();

            if ($endorsement) {
                $badge->endorsement = (array) $endorsement;
            }

            if (!empty($alignments)) {
                foreach ($alignments as $alignment) {
                    // Students cannot see some fields of the alignments.
                    unset($alignment->targetname);
                    unset($alignment->targeturl);
                    unset($alignment->targetdescription);
                    unset($alignment->targetframework);
                    unset($alignment->targetcode);

                    $badge->alignment[] = (array) $alignment;
                }
            }

            if (!empty($relatedbadges)) {
                foreach ($relatedbadges as $relatedbadge) {
                    // Students cannot see some fields of the related badges.
                    unset($relatedbadge->version);
                    unset($relatedbadge->language);
                    unset($relatedbadge->type);

                    $badge->relatedbadges[] = (array) $relatedbadge;
                }
            }

            $expectedbadges[] = (array) $badge;
            if (isset($badge->courseid)) {
                // Save the course badge to be able to compare it in our tests.
                $coursebadge = (array) $badge;
            }
        }

        $result = core_badges_external::get_user_badges();
        $result = external_api::clean_returnvalue(core_badges_external::get_user_badges_returns(), $result);
        $this->assertEquals($expectedbadges, $result['badges']);

        // Pagination and filtering.
        $result = core_badges_external::get_user_badges(0, $this->course->id, 0, 1, '', true);
        $result = external_api::clean_returnvalue(core_badges_external::get_user_badges_returns(), $result);
        $this->assertCount(1, $result['badges']);
        $this->assertEquals($coursebadge, $result['badges'][0]);
    }

    /**
     * Test get user badges.
     */
    public function test_get_other_user_badges() {

        $this->setUser($this->teacher);

        $result = core_badges_external::get_user_badges($this->student->id);
        $result = external_api::clean_returnvalue(core_badges_external::get_user_badges_returns(), $result);

        $this->assertCount(2, $result['badges']);

        // Check that we don't have permissions for view the complete information for site badges.
        foreach ($result['badges'] as $badge) {
            if (isset($badge['type']) and $badge['type'] == BADGE_TYPE_COURSE) {
                $this->assertTrue(isset($badge['message']));

                // Check that we have permissions to see all the data in alignments and related badges.
                foreach ($badge['alignment'] as $alignment) {
                    $this->assertTrue(isset($alignment['targetdescription']));
                }

                foreach ($badge['relatedbadges'] as $relatedbadge) {
                    $this->assertTrue(isset($relatedbadge['type']));
                }
            } else {
                $this->assertFalse(isset($badge['message']));
            }
        }
    }
}