<?php

use dokuwiki\ChangeLog\MediaChangeLog;
use dokuwiki\ChangeLog\PageChangeLog;

/**
 * Tests for requesting revisioninfo of a revision of a page with getRevisionInfo()
 *
 * This class uses the files:
 * - data/pages/mailinglist.txt
 * - data/meta/mailinglist.changes
 */
class changelog_getlastrevisionat_test extends DokuWikiTest {

    private $pageid = 'mailinglist';

    function setup() : void {
        parent::setup();
        global $cache_revinfo;
        $cache =& $cache_revinfo;
        unset($cache['nonexist']);
        unset($cache['mailinglist']);
    }


    /**
     * no nonexist.changes meta file available
     */
    function test_changemetadatanotexists() {
        $rev = 1362525899;
        $id = 'nonexist';
        $revsexpected = false;

        $pagelog = new PageChangeLog($id, $chunk_size = 8192);
        $revs = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revsexpected, $revs);
    }

    /**
     * start at exact current revision of mailinglist page
     *
     */
    function test_startatexactcurrentrev() {
        $rev = 1385051947;
        $revsexpected = '';

        //set a known timestamp
        touch(wikiFN($this->pageid), $rev);

        $pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
        $revs = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revsexpected, $revs);

    }

    /**
     * test a future revision
     *
     */
    function test_futurerev() {
        $rev = 1385051947;
        $revsexpected = '';

        //set a known timestamp
        touch(wikiFN($this->pageid), $rev);

        $rev +=1;

        $pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
        $revs = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revsexpected, $revs);

    }

    /**
     * start at exact last revision of mailinglist page
     *
     */
    function test_exactlastrev() {
        $rev = 1360110636;
        $revsexpected = 1360110636;

        $pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
        $revs = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revsexpected, $revs);
    }


    /**
     * Request not existing revision
     *
     */
    function test_olderrev() {
        $rev = 1;
        $revexpected = false;

        $pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
        $revfound = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revexpected, $revfound);
    }

    /**
     * Start at non existing revision somewhere between existing revisions
     */
    function test_notexistingrev() {
        $rev = 1362525890;
        $revexpected = 1362525359;

        $pagelog = new PageChangeLog($this->pageid, $chunk_size = 8192);
        $revfound = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($revexpected, $revfound);
    }

    /**
     * request nonexisting page
     *
     */
    function test_notexistingpage() {
        $rev = 1385051947;
        $currentexpected = false;

        $pagelog = new PageChangeLog('nonexistingpage', $chunk_size = 8192);
        $current = $pagelog->getLastRevisionAt($rev);
        $this->assertEquals($currentexpected, $current);
    }

    /**
     * test get correct revision on deleted media
     *
     */
    function test_deletedimage() {
        global $conf;
        global $AUTH_ACL;

        //we need to have a user with AUTH_DELETE rights
        //save settings
        $oldSuperUser = $conf['superuser'];
        $oldUseacl = $conf['useacl'];
        $oldRemoteUser = isset($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'] : null;

        $conf['superuser'] = 'admin';
        $conf['useacl']    = 1;
        $_SERVER['REMOTE_USER'] = 'admin';

        $image = 'wiki:imageat.png';

        $ret = copy(mediaFn('wiki:kind_zu_katze.png'),mediaFn($image));

        $revexpected = @filemtime(mediaFn($image));
        $rev = $revexpected + 10;

        $this->waitForTick(true);

        $ret = media_delete($image, 0);

        $medialog = new MediaChangeLog($image);
        $current = $medialog->getLastRevisionAt($rev);
        // as we wait for a tick, we should get something greater than the timestamp
        $this->assertGreaterThan($revexpected, $current);
        // however, it should be less than the current time or equal to it
        $this->assertLessThanOrEqual(time(), $current);

        //restore settings
        if ($oldRemoteUser !== null) {
            $_SERVER['REMOTE_USER'] = $oldRemoteUser;
        }
        $conf['superuser'] = $oldSuperUser;
        $conf['useacl'] = $oldUseacl;
    }
}