<?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/>.

/**
 * received message global search unit tests.
 *
 * @package     core
 * @copyright   2016 Devang Gaur
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

global $CFG;
require_once($CFG->dirroot . '/search/tests/fixtures/testable_core_search.php');

/**
 * Provides the unit tests for received messages global search.
 *
 * @package     core
 * @copyright   2016 Devang Gaur
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class message_received_search_testcase extends advanced_testcase {

    /**
     * @var string Area id
     */
    protected $messagereceivedareaid = null;

    /**
     * Setting up the test environment
     * @return void
     */
    public function setUp() {
        $this->resetAfterTest(true);
        set_config('enableglobalsearch', true);

        $this->messagereceivedareaid = \core_search\manager::generate_areaid('core_message', 'message_received');

        // Set \core_search::instance to the mock_search_engine as we don't require the search engine to be working to test this.
        $search = testable_core_search::instance();
    }

    /**
     * Indexing messages contents.
     *
     * @return void
     */
    public function test_message_received_indexing() {

        // Returns the instance as long as the area is supported.
        $searcharea = \core_search\manager::get_search_area($this->messagereceivedareaid);
        $this->assertInstanceOf('\core_message\search\message_received', $searcharea);

        $user1 = self::getDataGenerator()->create_user();
        $user2 = self::getDataGenerator()->create_user();

        $this->preventResetByRollback();
        $sink = $this->redirectMessages();

        $message = new \core\message\message();
        $message->courseid = SITEID;
        $message->userfrom = $user1;
        $message->userto = $user2;
        $message->subject = "Test Subject";
        $message->smallmessage = "Test small messsage";
        $message->fullmessage = "Test full messsage";
        $message->fullmessageformat = 0;
        $message->fullmessagehtml = null;
        $message->notification = 0;
        $message->component = "moodle";
        $message->name = "instantmessage";

        message_send($message);

        $messages = $sink->get_messages();

        $this->assertEquals(1, count($messages));

        // All records.
        $recordset = $searcharea->get_recordset_by_timestamp(0);
        $this->assertTrue($recordset->valid());
        $nrecords = 0;
        foreach ($recordset as $record) {
            $this->assertInstanceOf('stdClass', $record);
            $doc = $searcharea->get_document($record);
            $this->assertInstanceOf('\core_search\document', $doc);
            $nrecords++;
        }
        // If there would be an error/failure in the foreach above the recordset would be closed on shutdown.
        $recordset->close();
        $this->assertEquals(1, $nrecords);

        // The +2 is to prevent race conditions.
        $recordset = $searcharea->get_recordset_by_timestamp(time() + 2);

        // No new records.
        $this->assertFalse($recordset->valid());
        $recordset->close();
    }

    /**
     * Document contents.
     *
     * @return void
     */
    public function test_message_received_document() {

        // Returns the instance as long as the area is supported.
        $searcharea = \core_search\manager::get_search_area($this->messagereceivedareaid);
        $this->assertInstanceOf('\core_message\search\message_received', $searcharea);

        $user1 = self::getDataGenerator()->create_user();
        $user2 = self::getDataGenerator()->create_user();

        $this->preventResetByRollback();
        $sink = $this->redirectMessages();

        $message = new \core\message\message();
        $message->courseid = SITEID;
        $message->userfrom = $user1;
        $message->userto = $user2;
        $message->subject = "Test Subject";
        $message->smallmessage = "Test small messsage";
        $message->fullmessage = "Test full messsage";
        $message->fullmessageformat = 0;
        $message->fullmessagehtml = null;
        $message->notification = 0;
        $message->component = "moodle";
        $message->name = "instantmessage";

        message_send($message);

        $messages = $sink->get_messages();
        $message = $messages[0];

        $doc = $searcharea->get_document($message);
        $this->assertInstanceOf('\core_search\document', $doc);
        $this->assertEquals($message->id, $doc->get('itemid'));
        $this->assertEquals($this->messagereceivedareaid . '-' . $message->id, $doc->get('id'));
        $this->assertEquals(SITEID, $doc->get('courseid'));
        $this->assertEquals($message->useridfrom, $doc->get('userid'));
        $this->assertEquals($message->useridto, $doc->get('owneruserid'));
        $this->assertEquals(content_to_text($message->subject, false), $doc->get('title'));
        $this->assertEquals(content_to_text($message->smallmessage, false), $doc->get('content'));
    }

    /**
     * Document accesses.
     *
     * @return void
     */
    public function test_message_received_access() {
        global $CFG;

        // Returns the instance as long as the area is supported.
        $searcharea = \core_search\manager::get_search_area($this->messagereceivedareaid);

        $user1 = self::getDataGenerator()->create_user();
        $user2 = self::getDataGenerator()->create_user();
        $user3 = self::getDataGenerator()->create_user();

        $this->preventResetByRollback();
        $sink = $this->redirectMessages();

        $message = new \core\message\message();
        $message->courseid = SITEID;
        $message->userfrom = $user1;
        $message->userto = $user2;
        $message->subject = "Test Subject";
        $message->smallmessage = "Test small messsage";
        $message->fullmessage = "Test full messsage";
        $message->fullmessageformat = 0;
        $message->fullmessagehtml = null;
        $message->notification = 0;
        $message->component = "moodle";
        $message->name = "instantmessage";

        $messageid = message_send($message);

        $messages = $sink->get_messages();
        $message = $messages[0];

        $this->setUser($user1);
        $this->assertEquals(\core_search\manager::ACCESS_DENIED, $searcharea->check_access($messageid));
        $this->assertEquals(\core_search\manager::ACCESS_DELETED, $searcharea->check_access(-123));

        $this->setUser($user2);
        $this->assertEquals(\core_search\manager::ACCESS_GRANTED, $searcharea->check_access($messageid));

        if ($CFG->messaging) {
            $this->assertEquals(\core_search\manager::ACCESS_GRANTED, $searcharea->check_access($messageid));
        } else {
            $this->assertEquals(\core_search\manager::ACCESS_DENIED, $searcharea->check_access($messageid));
        }

        message_delete_message($message, $user2->id);
        $this->assertEquals(\core_search\manager::ACCESS_DELETED, $searcharea->check_access($messageid));

        $this->setUser($user3);
        $this->assertEquals(\core_search\manager::ACCESS_DENIED, $searcharea->check_access($messageid));

        $this->setGuestUser();
        $this->assertEquals(\core_search\manager::ACCESS_DENIED, $searcharea->check_access($messageid));

        $this->setAdminUser();
        $this->assertEquals(\core_search\manager::ACCESS_DENIED, $searcharea->check_access($messageid));

        delete_user($user1);

        $this->setUser($user2);
        $this->assertEquals(\core_search\manager::ACCESS_DELETED, $searcharea->check_access($messageid));

    }
}