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moodle/lib/statslib.php
Petr Skoda ba50bd3d63 MDL-29030 fix remaining report linking hacks 
Please note all plugin references from core should use callbacks, it is not ok to use capabilities or links to plugins because they may not be present in customised installs.
2011-11-06 12:22:50 +01:00

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<?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/>.
/**
* @package core
* @subpackage stats
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/** THESE CONSTANTS ARE USED FOR THE REPORTING PAGE. */
define('STATS_REPORT_LOGINS',1); // double impose logins and unique logins on a line graph. site course only.
define('STATS_REPORT_READS',2); // double impose student reads and teacher reads on a line graph.
define('STATS_REPORT_WRITES',3); // double impose student writes and teacher writes on a line graph.
define('STATS_REPORT_ACTIVITY',4); // 2+3 added up, teacher vs student.
define('STATS_REPORT_ACTIVITYBYROLE',5); // all activity, reads vs writes, selected by role.
// user level stats reports.
define('STATS_REPORT_USER_ACTIVITY',7);
define('STATS_REPORT_USER_ALLACTIVITY',8);
define('STATS_REPORT_USER_LOGINS',9);
define('STATS_REPORT_USER_VIEW',10); // this is the report you see on the user profile.
// admin only ranking stats reports
define('STATS_REPORT_ACTIVE_COURSES',11);
define('STATS_REPORT_ACTIVE_COURSES_WEIGHTED',12);
define('STATS_REPORT_PARTICIPATORY_COURSES',13);
define('STATS_REPORT_PARTICIPATORY_COURSES_RW',14);
// start after 0 = show dailies.
define('STATS_TIME_LASTWEEK',1);
define('STATS_TIME_LAST2WEEKS',2);
define('STATS_TIME_LAST3WEEKS',3);
define('STATS_TIME_LAST4WEEKS',4);
// start after 10 = show weeklies
define('STATS_TIME_LAST2MONTHS',12);
define('STATS_TIME_LAST3MONTHS',13);
define('STATS_TIME_LAST4MONTHS',14);
define('STATS_TIME_LAST5MONTHS',15);
define('STATS_TIME_LAST6MONTHS',16);
// start after 20 = show monthlies
define('STATS_TIME_LAST7MONTHS',27);
define('STATS_TIME_LAST8MONTHS',28);
define('STATS_TIME_LAST9MONTHS',29);
define('STATS_TIME_LAST10MONTHS',30);
define('STATS_TIME_LAST11MONTHS',31);
define('STATS_TIME_LASTYEAR',32);
// different modes for what reports to offer
define('STATS_MODE_GENERAL',1);
define('STATS_MODE_DETAILED',2);
define('STATS_MODE_RANKED',3); // admins only - ranks courses
/**
* Print daily cron progress
* @param string $ident
*/
function stats_daily_progress($ident) {
static $start = 0;
static $init = 0;
if ($ident == 'init') {
$init = $start = time();
return;
}
$elapsed = time() - $start;
$start = time();
if (debugging('', DEBUG_ALL)) {
mtrace("$ident:$elapsed ", '');
} else {
mtrace('.', '');
}
}
/**
* Execute daily statistics gathering
* @param int $maxdays maximum number of days to be processed
* @return boolean success
*/
function stats_cron_daily($maxdays=1) {
global $CFG, $DB;
$now = time();
$fpcontext = get_context_instance(CONTEXT_COURSE, SITEID, MUST_EXIST);
// read last execution date from db
if (!$timestart = get_config(NULL, 'statslastdaily')) {
$timestart = stats_get_base_daily(stats_get_start_from('daily'));
set_config('statslastdaily', $timestart);
}
// calculate scheduled time
$scheduledtime = stats_get_base_daily() + $CFG->statsruntimestarthour*60*60 + $CFG->statsruntimestartminute*60;
// Note: This will work fine for sites running cron each 4 hours or less (hopefully, 99.99% of sites). MDL-16709
// check to make sure we're due to run, at least 20 hours after last run
if (isset($CFG->statslastexecution) and ((time() - 20*60*60) < $CFG->statslastexecution)) {
mtrace("...preventing stats to run, last execution was less than 20 hours ago.");
return false;
// also check that we are a max of 4 hours after scheduled time, stats won't run after that
} else if (time() > $scheduledtime + 4*60*60) {
mtrace("...preventing stats to run, more than 4 hours since scheduled time.");
return false;
} else {
set_config('statslastexecution', time()); /// Grab this execution as last one
}
$nextmidnight = stats_get_next_day_start($timestart);
// are there any days that need to be processed?
if ($now < $nextmidnight) {
return true; // everything ok and up-to-date
}
$timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
if (!set_cron_lock('statsrunning', $now + $timeout)) {
return false;
}
// first delete entries that should not be there yet
$DB->delete_records_select('stats_daily', "timeend > $timestart");
$DB->delete_records_select('stats_user_daily', "timeend > $timestart");
// Read in a few things we'll use later
$viewactions = stats_get_action_names('view');
$postactions = stats_get_action_names('post');
$guest = (int)$CFG->siteguest;
$guestrole = (int)$CFG->guestroleid;
$defaultfproleid = (int)$CFG->defaultfrontpageroleid;
mtrace("Running daily statistics gathering, starting at $timestart:");
$days = 0;
$failed = false; // failed stats flag
while ($now > $nextmidnight) {
if ($days >= $maxdays) {
mtrace("...stopping early, reached maximum number of $maxdays days - will continue next time.");
set_cron_lock('statsrunning', null);
return false;
}
$days++;
@set_time_limit($timeout - 200);
if ($days > 1) {
// move the lock
set_cron_lock('statsrunning', time() + $timeout, true);
}
$daystart = time();
$timesql = "l.time >= $timestart AND l.time < $nextmidnight";
$timesql1 = "l1.time >= $timestart AND l1.time < $nextmidnight";
$timesql2 = "l2.time >= $timestart AND l2.time < $nextmidnight";
stats_daily_progress('init');
/// find out if any logs available for this day
$sql = "SELECT 'x'
FROM {log} l
WHERE $timesql";
$logspresent = $DB->get_records_sql($sql, null, 0, 1);
/// process login info first
$sql = "INSERT INTO {stats_user_daily} (stattype, timeend, courseid, userid, statsreads)
SELECT 'logins', timeend, courseid, userid, count(statsreads)
FROM (
SELECT $nextmidnight AS timeend, ".SITEID." AS courseid, l.userid, l.id AS statsreads
FROM {log} l
WHERE action = 'login' AND $timesql
) inline_view
GROUP BY timeend, courseid, userid
HAVING count(statsreads) > 0";
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('1');
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'logins' AS stattype, $nextmidnight AS timeend, ".SITEID." as courseid, 0,
COALESCE((SELECT SUM(statsreads)
FROM {stats_user_daily} s1
WHERE s1.stattype = 'logins' AND timeend = $nextmidnight), 0) AS stat1,
(SELECT COUNT('x')
FROM {stats_user_daily} s2
WHERE s2.stattype = 'logins' AND timeend = $nextmidnight) AS stat2" .
$DB->sql_null_from_clause();
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('2');
// Enrolments and active enrolled users
//
// Unfortunately, we do not know how many users were registered
// at given times in history :-(
// - stat1: enrolled users
// - stat2: enrolled users active in this period
// - SITEID is special case here, because it's all about default enrolment
// in that case, we'll count non-deleted users.
//
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', timeend, courseid, roleid, COUNT(DISTINCT userid), 0
FROM (
SELECT $nextmidnight AS timeend, e.courseid, ra.roleid, ue.userid
FROM {role_assignments} ra
JOIN {context} c ON (c.id = ra.contextid AND c.contextlevel = :courselevel)
JOIN {enrol} e ON e.courseid = c.instanceid
JOIN {user_enrolments} ue ON (ue.enrolid = e.id AND ue.userid = ra.userid)
) inline_view
GROUP BY timeend, courseid, roleid";
if (!$DB->execute($sql, array('courselevel'=>CONTEXT_COURSE))) {
$failed = true;
break;
}
stats_daily_progress('3');
// using table alias in UPDATE does not work in pg < 8.2
$sql = "UPDATE {stats_daily}
SET stat2 = (SELECT COUNT(DISTINCT ra.userid)
FROM {role_assignments} ra
JOIN {context} c ON (c.id = ra.contextid AND c.contextlevel = :courselevel)
JOIN {enrol} e ON e.courseid = c.instanceid
JOIN {user_enrolments} ue ON (ue.enrolid = e.id AND ue.userid = ra.userid)
WHERE ra.roleid = {stats_daily}.roleid AND
e.courseid = {stats_daily}.courseid AND
EXISTS (SELECT 'x'
FROM {log} l
WHERE l.course = {stats_daily}.courseid AND
l.userid = ra.userid AND $timesql))
WHERE {stats_daily}.stattype = 'enrolments' AND
{stats_daily}.timeend = $nextmidnight AND
{stats_daily}.courseid IN
(SELECT DISTINCT l.course
FROM {log} l
WHERE $timesql)";
if (!$DB->execute($sql, array('courselevel'=>CONTEXT_COURSE))) {
$failed = true;
break;
}
stats_daily_progress('4');
/// now get course total enrolments (roleid==0) - except frontpage
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', timeend, id, nroleid, COUNT(DISTINCT userid), 0
FROM (
SELECT $nextmidnight AS timeend, e.courseid AS id, 0 AS nroleid, ue.userid
FROM {enrol} e
JOIN {user_enrolments} ue ON ue.enrolid = e.id
) inline_view
GROUP BY timeend, id, nroleid
HAVING COUNT(DISTINCT userid) > 0";
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('5');
$sql = "UPDATE {stats_daily}
SET stat2 = (SELECT COUNT(DISTINCT ue.userid)
FROM {enrol} e
JOIN {user_enrolments} ue ON ue.enrolid = e.id
WHERE e.courseid = {stats_daily}.courseid AND
EXISTS (SELECT 'x'
FROM {log} l
WHERE l.course = {stats_daily}.courseid AND
l.userid = ue.userid AND $timesql))
WHERE {stats_daily}.stattype = 'enrolments' AND
{stats_daily}.timeend = $nextmidnight AND
{stats_daily}.roleid = 0 AND
{stats_daily}.courseid IN
(SELECT l.course
FROM {log} l
WHERE $timesql AND l.course <> ".SITEID.")";
if ($logspresent and !$DB->execute($sql, array())) {
$failed = true;
break;
}
stats_daily_progress('6');
/// frontapge(==site) enrolments total
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', $nextmidnight, ".SITEID.", 0,
(SELECT COUNT('x')
FROM {user} u
WHERE u.deleted = 0) AS stat1,
(SELECT COUNT(DISTINCT u.id)
FROM {user} u
JOIN {log} l ON l.userid = u.id
WHERE u.deleted = 0 AND $timesql) AS stat2" .
$DB->sql_null_from_clause();
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('7');
/// Default frontpage role enrolments are all site users (not deleted)
if ($defaultfproleid) {
// first remove default frontpage role counts if created by previous query
$sql = "DELETE
FROM {stats_daily}
WHERE stattype = 'enrolments' AND courseid = ".SITEID." AND
roleid = $defaultfproleid AND timeend = $nextmidnight";
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('8');
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', $nextmidnight, ".SITEID.", $defaultfproleid,
(SELECT COUNT('x')
FROM {user} u
WHERE u.deleted = 0) AS stat1,
(SELECT COUNT(DISTINCT u.id)
FROM {user} u
JOIN {log} l ON l.userid = u.id
WHERE u.deleted = 0 AND $timesql) AS stat2" .
$DB->sql_null_from_clause();;
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('9');
} else {
stats_daily_progress('x');
stats_daily_progress('x');
}
/// individual user stats (including not-logged-in) in each course, this is slow - reuse this data if possible
list($viewactionssql, $params1) = $DB->get_in_or_equal($viewactions, SQL_PARAMS_NAMED, 'view');
list($postactionssql, $params2) = $DB->get_in_or_equal($postactions, SQL_PARAMS_NAMED, 'post');
$sql = "INSERT INTO {stats_user_daily} (stattype, timeend, courseid, userid, statsreads, statswrites)
SELECT 'activity' AS stattype, $nextmidnight AS timeend, d.courseid, d.userid,
(SELECT COUNT('x')
FROM {log} l
WHERE l.userid = d.userid AND
l.course = d.courseid AND $timesql AND
l.action $viewactionssql) AS statsreads,
(SELECT COUNT('x')
FROM {log} l
WHERE l.userid = d.userid AND
l.course = d.courseid AND $timesql AND
l.action $postactionssql) AS statswrites
FROM (SELECT DISTINCT u.id AS userid, l.course AS courseid
FROM {user} u, {log} l
WHERE u.id = l.userid AND $timesql
UNION
SELECT 0 AS userid, ".SITEID." AS courseid" . $DB->sql_null_from_clause() . ") d";
// can not use group by here because pg can not handle it :-(
if ($logspresent and !$DB->execute($sql, array_merge($params1, $params2))) {
$failed = true;
break;
}
stats_daily_progress('10');
/// how many view/post actions in each course total
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity' AS stattype, $nextmidnight AS timeend, c.id AS courseid, 0,
(SELECT COUNT('x')
FROM {log} l1
WHERE l1.course = c.id AND l1.action $viewactionssql AND
$timesql1) AS stat1,
(SELECT COUNT('x')
FROM {log} l2
WHERE l2.course = c.id AND l2.action $postactionssql AND
$timesql2) AS stat2
FROM {course} c
WHERE EXISTS (SELECT 'x'
FROM {log} l
WHERE l.course = c.id and $timesql)";
if ($logspresent and !$DB->execute($sql, array_merge($params1, $params2))) {
$failed = true;
break;
}
stats_daily_progress('11');
/// how many view actions for each course+role - excluding guests and frontpage
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', timeend, courseid, roleid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextmidnight AS timeend, pl.courseid, pl.roleid, sud.statsreads, sud.statswrites
FROM {stats_user_daily} sud,
(SELECT DISTINCT ra.userid, ra.roleid, e.courseid
FROM {role_assignments} ra
JOIN {context} c ON (c.id = ra.contextid AND c.contextlevel = :courselevel)
JOIN {enrol} e ON e.courseid = c.instanceid
JOIN {user_enrolments} ue ON (ue.enrolid = e.id AND ue.userid = ra.userid)
WHERE ra.roleid <> $guestrole AND
ra.userid <> $guest
) pl
WHERE sud.userid = pl.userid AND
sud.courseid = pl.courseid AND
sud.timeend = $nextmidnight AND
sud.stattype='activity'
) inline_view
GROUP BY timeend, courseid, roleid
HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
if ($logspresent and !$DB->execute($sql, array('courselevel'=>CONTEXT_COURSE))) {
$failed = true;
break;
}
stats_daily_progress('12');
/// how many view actions from guests only in each course - excluding frontpage
/// normal users may enter course with temporary guest access too
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', timeend, courseid, nroleid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextmidnight AS timeend, sud.courseid, $guestrole AS nroleid, sud.statsreads, sud.statswrites
FROM {stats_user_daily} sud
WHERE sud.timeend = $nextmidnight AND sud.courseid <> ".SITEID." AND
sud.stattype='activity' AND
(sud.userid = $guest OR sud.userid
NOT IN (SELECT ue.userid
FROM {user_enrolments} ue
JOIN {enrol} e ON ue.enrolid = e.id
WHERE e.courseid = sud.courseid))
) inline_view
GROUP BY timeend, courseid, nroleid
HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
if ($logspresent and !$DB->execute($sql, array())) {
$failed = true;
break;
}
stats_daily_progress('13');
/// how many view actions for each role on frontpage - excluding guests, not-logged-in and default frontpage role
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', timeend, courseid, roleid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextmidnight AS timeend, pl.courseid, pl.roleid, sud.statsreads, sud.statswrites
FROM {stats_user_daily} sud,
(SELECT DISTINCT ra.userid, ra.roleid, c.instanceid AS courseid
FROM {role_assignments} ra
JOIN {context} c ON c.id = ra.contextid
WHERE ra.contextid = :fpcontext AND
ra.roleid <> $defaultfproleid AND
ra.roleid <> $guestrole AND
ra.userid <> $guest
) pl
WHERE sud.userid = pl.userid AND
sud.courseid = pl.courseid AND
sud.timeend = $nextmidnight AND
sud.stattype='activity'
) inline_view
GROUP BY timeend, courseid, roleid
HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
if ($logspresent and !$DB->execute($sql, array('fpcontext'=>$fpcontext->id))) {
$failed = true;
break;
}
stats_daily_progress('14');
/// how many view actions for default frontpage role on frontpage only
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', timeend, courseid, nroleid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT sud.timeend AS timeend, sud.courseid, $defaultfproleid AS nroleid, sud.statsreads, sud.statswrites
FROM {stats_user_daily} sud
WHERE sud.timeend = :nextm AND sud.courseid = :siteid AND
sud.stattype='activity' AND
sud.userid <> $guest AND sud.userid <> 0 AND sud.userid
NOT IN (SELECT ra.userid
FROM {role_assignments} ra
WHERE ra.roleid <> $guestrole AND
ra.roleid <> $defaultfproleid AND ra.contextid = :fpcontext)
) inline_view
GROUP BY timeend, courseid, nroleid
HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
if ($logspresent and !$DB->execute($sql, array('fpcontext'=>$fpcontext->id, 'siteid'=>SITEID, 'nextm'=>$nextmidnight))) {
$failed = true;
break;
}
stats_daily_progress('15');
/// how many view actions for guests or not-logged-in on frontpage
$sql = "INSERT INTO {stats_daily} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', timeend, courseid, nroleid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextmidnight AS timeend, ".SITEID." AS courseid, $guestrole AS nroleid, pl.statsreads, pl.statswrites
FROM (
SELECT sud.statsreads, sud.statswrites
FROM {stats_user_daily} sud
WHERE (sud.userid = $guest OR sud.userid = 0) AND
sud.timeend = $nextmidnight AND sud.courseid = ".SITEID." AND
sud.stattype='activity'
) pl
) inline_view
GROUP BY timeend, courseid, nroleid
HAVING SUM(statsreads) > 0 OR SUM(statswrites) > 0";
if ($logspresent and !$DB->execute($sql)) {
$failed = true;
break;
}
stats_daily_progress('16');
// remember processed days
set_config('statslastdaily', $nextmidnight);
mtrace(" finished until $nextmidnight: ".userdate($nextmidnight)." (in ".(time()-$daystart)." s)");
$timestart = $nextmidnight;
$nextmidnight = stats_get_next_day_start($nextmidnight);
}
set_cron_lock('statsrunning', null);
if ($failed) {
$days--;
mtrace("...error occurred, completed $days days of statistics.");
return false;
} else {
mtrace("...completed $days days of statistics.");
return true;
}
}
/**
* Execute weekly statistics gathering
* @return boolean success
*/
function stats_cron_weekly() {
global $CFG, $DB;
$now = time();
// read last execution date from db
if (!$timestart = get_config(NULL, 'statslastweekly')) {
$timestart = stats_get_base_daily(stats_get_start_from('weekly'));
set_config('statslastweekly', $timestart);
}
$nextstartweek = stats_get_next_week_start($timestart);
// are there any weeks that need to be processed?
if ($now < $nextstartweek) {
return true; // everything ok and up-to-date
}
$timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
if (!set_cron_lock('statsrunning', $now + $timeout)) {
return false;
}
// fisrt delete entries that should not be there yet
$DB->delete_records_select('stats_weekly', "timeend > $timestart");
$DB->delete_records_select('stats_user_weekly', "timeend > $timestart");
mtrace("Running weekly statistics gathering, starting at $timestart:");
$weeks = 0;
while ($now > $nextstartweek) {
@set_time_limit($timeout - 200);
$weeks++;
if ($weeks > 1) {
// move the lock
set_cron_lock('statsrunning', time() + $timeout, true);
}
$logtimesql = "l.time >= $timestart AND l.time < $nextstartweek";
$stattimesql = "timeend > $timestart AND timeend <= $nextstartweek";
/// process login info first
$sql = "INSERT INTO {stats_user_weekly} (stattype, timeend, courseid, userid, statsreads)
SELECT 'logins', timeend, courseid, userid, COUNT(statsreads)
FROM (
SELECT $nextstartweek AS timeend, ".SITEID." as courseid, l.userid, l.id AS statsreads
FROM {log} l
WHERE action = 'login' AND $logtimesql
) inline_view
GROUP BY timeend, courseid, userid
HAVING count(statsreads) > 0";
$DB->execute($sql);
$sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'logins' AS stattype, $nextstartweek AS timeend, ".SITEID." as courseid, 0,
COALESCE((SELECT SUM(statsreads)
FROM {stats_user_weekly} s1
WHERE s1.stattype = 'logins' AND timeend = $nextstartweek), 0) AS nstat1,
(SELECT COUNT('x')
FROM {stats_user_weekly} s2
WHERE s2.stattype = 'logins' AND timeend = $nextstartweek) AS nstat2" .
$DB->sql_null_from_clause();
$DB->execute($sql);
/// now enrolments averages
$sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', ntimeend, courseid, roleid, " . $DB->sql_ceil('AVG(stat1)') . ", " . $DB->sql_ceil('AVG(stat2)') . "
FROM (
SELECT $nextstartweek AS ntimeend, courseid, roleid, stat1, stat2
FROM {stats_daily} sd
WHERE stattype = 'enrolments' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, roleid";
$DB->execute($sql);
/// activity read/write averages
$sql = "INSERT INTO {stats_weekly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', ntimeend, courseid, roleid, SUM(stat1), SUM(stat2)
FROM (
SELECT $nextstartweek AS ntimeend, courseid, roleid, stat1, stat2
FROM {stats_daily}
WHERE stattype = 'activity' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, roleid";
$DB->execute($sql);
/// user read/write averages
$sql = "INSERT INTO {stats_user_weekly} (stattype, timeend, courseid, userid, statsreads, statswrites)
SELECT 'activity', ntimeend, courseid, userid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextstartweek AS ntimeend, courseid, userid, statsreads, statswrites
FROM {stats_user_daily}
WHERE stattype = 'activity' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, userid";
$DB->execute($sql);
set_config('statslastweekly', $nextstartweek);
mtrace(" finished until $nextstartweek: ".userdate($nextstartweek));
$timestart = $nextstartweek;
$nextstartweek = stats_get_next_week_start($nextstartweek);
}
set_cron_lock('statsrunning', null);
mtrace("...completed $weeks weeks of statistics.");
return true;
}
/**
* Execute monthly statistics gathering
* @return boolean success
*/
function stats_cron_monthly() {
global $CFG, $DB;
$now = time();
// read last execution date from db
if (!$timestart = get_config(NULL, 'statslastmonthly')) {
$timestart = stats_get_base_monthly(stats_get_start_from('monthly'));
set_config('statslastmonthly', $timestart);
}
$nextstartmonth = stats_get_next_month_start($timestart);
// are there any months that need to be processed?
if ($now < $nextstartmonth) {
return true; // everything ok and up-to-date
}
$timeout = empty($CFG->statsmaxruntime) ? 60*60*24 : $CFG->statsmaxruntime;
if (!set_cron_lock('statsrunning', $now + $timeout)) {
return false;
}
// fisr delete entries that should not be there yet
$DB->delete_records_select('stats_monthly', "timeend > $timestart");
$DB->delete_records_select('stats_user_monthly', "timeend > $timestart");
$startmonth = stats_get_base_monthly($now);
mtrace("Running monthly statistics gathering, starting at $timestart:");
$months = 0;
while ($now > $nextstartmonth) {
@set_time_limit($timeout - 200);
$months++;
if ($months > 1) {
// move the lock
set_cron_lock('statsrunning', time() + $timeout, true);
}
$logtimesql = "l.time >= $timestart AND l.time < $nextstartmonth";
$stattimesql = "timeend > $timestart AND timeend <= $nextstartmonth";
/// process login info first
$sql = "INSERT INTO {stats_user_monthly} (stattype, timeend, courseid, userid, statsreads)
SELECT 'logins', timeend, courseid, userid, COUNT(statsreads)
FROM (
SELECT $nextstartmonth AS timeend, ".SITEID." as courseid, l.userid, l.id AS statsreads
FROM {log} l
WHERE action = 'login' AND $logtimesql
) inline_view
GROUP BY timeend, courseid, userid";
$DB->execute($sql);
$sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'logins' AS stattype, $nextstartmonth AS timeend, ".SITEID." as courseid, 0,
COALESCE((SELECT SUM(statsreads)
FROM {stats_user_monthly} s1
WHERE s1.stattype = 'logins' AND timeend = $nextstartmonth), 0) AS nstat1,
(SELECT COUNT('x')
FROM {stats_user_monthly} s2
WHERE s2.stattype = 'logins' AND timeend = $nextstartmonth) AS nstat2" .
$DB->sql_null_from_clause();
$DB->execute($sql);
/// now enrolments averages
$sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'enrolments', ntimeend, courseid, roleid, " . $DB->sql_ceil('AVG(stat1)') . ", " . $DB->sql_ceil('AVG(stat2)') . "
FROM (
SELECT $nextstartmonth AS ntimeend, courseid, roleid, stat1, stat2
FROM {stats_daily} sd
WHERE stattype = 'enrolments' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, roleid";
$DB->execute($sql);
/// activity read/write averages
$sql = "INSERT INTO {stats_monthly} (stattype, timeend, courseid, roleid, stat1, stat2)
SELECT 'activity', ntimeend, courseid, roleid, SUM(stat1), SUM(stat2)
FROM (
SELECT $nextstartmonth AS ntimeend, courseid, roleid, stat1, stat2
FROM {stats_daily}
WHERE stattype = 'activity' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, roleid";
$DB->execute($sql);
/// user read/write averages
$sql = "INSERT INTO {stats_user_monthly} (stattype, timeend, courseid, userid, statsreads, statswrites)
SELECT 'activity', ntimeend, courseid, userid, SUM(statsreads), SUM(statswrites)
FROM (
SELECT $nextstartmonth AS ntimeend, courseid, userid, statsreads, statswrites
FROM {stats_user_daily}
WHERE stattype = 'activity' AND $stattimesql
) inline_view
GROUP BY ntimeend, courseid, userid";
$DB->execute($sql);
set_config('statslastmonthly', $nextstartmonth);
mtrace(" finished until $nextstartmonth: ".userdate($nextstartmonth));
$timestart = $nextstartmonth;
$nextstartmonth = stats_get_next_month_start($nextstartmonth);
}
set_cron_lock('statsrunning', null);
mtrace("...completed $months months of statistics.");
return true;
}
/**
* Return starting date of stats processing
* @param string $str name of table - daily, weekly or monthly
* @return int timestamp
*/
function stats_get_start_from($str) {
global $CFG, $DB;
// are there any data in stats table? Should not be...
if ($timeend = $DB->get_field_sql('SELECT MAX(timeend) FROM {stats_'.$str.'}')) {
return $timeend;
}
// decide what to do based on our config setting (either all or none or a timestamp)
switch ($CFG->statsfirstrun) {
case 'all':
if ($firstlog = $DB->get_field_sql('SELECT MIN(time) FROM {log}')) {
return $firstlog;
}
default:
if (is_numeric($CFG->statsfirstrun)) {
return time() - $CFG->statsfirstrun;
}
// not a number? use next instead
case 'none':
return strtotime('-3 day', time());
}
}
/**
* Start of day
* @param int $time timestamp
* @return start of day
*/
function stats_get_base_daily($time=0) {
global $CFG;
if (empty($time)) {
$time = time();
}
if ($CFG->timezone == 99) {
$time = strtotime(date('d-M-Y', $time));
return $time;
} else {
$offset = get_timezone_offset($CFG->timezone);
$gtime = $time + $offset;
$gtime = intval($gtime / (60*60*24)) * 60*60*24;
return $gtime - $offset;
}
}
/**
* Start of week
* @param int $time timestamp
* @return start of week
*/
function stats_get_base_weekly($time=0) {
global $CFG;
$time = stats_get_base_daily($time);
$startday = $CFG->calendar_startwday;
if ($CFG->timezone == 99) {
$thisday = date('w', $time);
} else {
$offset = get_timezone_offset($CFG->timezone);
$gtime = $time + $offset;
$thisday = gmdate('w', $gtime);
}
if ($thisday > $startday) {
$time = $time - (($thisday - $startday) * 60*60*24);
} else if ($thisday < $startday) {
$time = $time - ((7 + $thisday - $startday) * 60*60*24);
}
return $time;
}
/**
* Start of month
* @param int $time timestamp
* @return start of month
*/
function stats_get_base_monthly($time=0) {
global $CFG;
if (empty($time)) {
$time = time();
}
if ($CFG->timezone == 99) {
return strtotime(date('1-M-Y', $time));
} else {
$time = stats_get_base_daily($time);
$offset = get_timezone_offset($CFG->timezone);
$gtime = $time + $offset;
$day = gmdate('d', $gtime);
if ($day == 1) {
return $time;
}
return $gtime - (($day-1) * 60*60*24);
}
}
/**
* Start of next day
* @param int $time timestamp
* @return start of next day
*/
function stats_get_next_day_start($time) {
$next = stats_get_base_daily($time);
$next = $next + 60*60*26;
$next = stats_get_base_daily($next);
if ($next <= $time) {
//DST trouble - prevent infinite loops
$next = $next + 60*60*24;
}
return $next;
}
/**
* Start of next week
* @param int $time timestamp
* @return start of next week
*/
function stats_get_next_week_start($time) {
$next = stats_get_base_weekly($time);
$next = $next + 60*60*24*9;
$next = stats_get_base_weekly($next);
if ($next <= $time) {
//DST trouble - prevent infinite loops
$next = $next + 60*60*24*7;
}
return $next;
}
/**
* Start of next month
* @param int $time timestamp
* @return start of next month
*/
function stats_get_next_month_start($time) {
$next = stats_get_base_monthly($time);
$next = $next + 60*60*24*33;
$next = stats_get_base_monthly($next);
if ($next <= $time) {
//DST trouble - prevent infinite loops
$next = $next + 60*60*24*31;
}
return $next;
}
/**
* Remove old stats data
*/
function stats_clean_old() {
global $DB;
mtrace("Running stats cleanup tasks...");
$deletebefore = stats_get_base_monthly();
// delete dailies older than 3 months (to be safe)
$deletebefore = strtotime('-3 months', $deletebefore);
$DB->delete_records_select('stats_daily', "timeend < $deletebefore");
$DB->delete_records_select('stats_user_daily', "timeend < $deletebefore");
// delete weeklies older than 9 months (to be safe)
$deletebefore = strtotime('-6 months', $deletebefore);
$DB->delete_records_select('stats_weekly', "timeend < $deletebefore");
$DB->delete_records_select('stats_user_weekly', "timeend < $deletebefore");
// don't delete monthlies
mtrace("...stats cleanup finished");
}
function stats_get_parameters($time,$report,$courseid,$mode,$roleid=0) {
global $CFG, $DB;
$param = new stdClass();
$param->params = array();
if ($time < 10) { // dailies
// number of days to go back = 7* time
$param->table = 'daily';
$param->timeafter = strtotime("-".($time*7)." days",stats_get_base_daily());
} elseif ($time < 20) { // weeklies
// number of weeks to go back = time - 10 * 4 (weeks) + base week
$param->table = 'weekly';
$param->timeafter = strtotime("-".(($time - 10)*4)." weeks",stats_get_base_weekly());
} else { // monthlies.
// number of months to go back = time - 20 * months + base month
$param->table = 'monthly';
$param->timeafter = strtotime("-".($time - 20)." months",stats_get_base_monthly());
}
$param->extras = '';
switch ($report) {
// ******************** STATS_MODE_GENERAL ******************** //
case STATS_REPORT_LOGINS:
$param->fields = 'timeend,sum(stat1) as line1,sum(stat2) as line2';
$param->fieldscomplete = true;
$param->stattype = 'logins';
$param->line1 = get_string('statslogins');
$param->line2 = get_string('statsuniquelogins');
if ($courseid == SITEID) {
$param->extras = 'GROUP BY timeend';
}
break;
case STATS_REPORT_READS:
$param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, stat1 as line1';
$param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
$param->aggregategroupby = 'roleid';
$param->stattype = 'activity';
$param->crosstab = true;
$param->extras = 'GROUP BY timeend,roleid,stat1';
if ($courseid == SITEID) {
$param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat1) as line1';
$param->extras = 'GROUP BY timeend,roleid';
}
break;
case STATS_REPORT_WRITES:
$param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, stat2 as line1';
$param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
$param->aggregategroupby = 'roleid';
$param->stattype = 'activity';
$param->crosstab = true;
$param->extras = 'GROUP BY timeend,roleid,stat2';
if ($courseid == SITEID) {
$param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat2) as line1';
$param->extras = 'GROUP BY timeend,roleid';
}
break;
case STATS_REPORT_ACTIVITY:
$param->fields = $DB->sql_concat('timeend','roleid').' AS uniqueid, timeend, roleid, sum(stat1+stat2) as line1';
$param->fieldscomplete = true; // set this to true to avoid anything adding stuff to the list and breaking complex queries.
$param->aggregategroupby = 'roleid';
$param->stattype = 'activity';
$param->crosstab = true;
$param->extras = 'GROUP BY timeend,roleid';
if ($courseid == SITEID) {
$param->extras = 'GROUP BY timeend,roleid';
}
break;
case STATS_REPORT_ACTIVITYBYROLE;
$param->fields = 'stat1 AS line1, stat2 AS line2';
$param->stattype = 'activity';
$rolename = $DB->get_field('role','name', array('id'=>$roleid));
$param->line1 = $rolename . get_string('statsreads');
$param->line2 = $rolename . get_string('statswrites');
if ($courseid == SITEID) {
$param->extras = 'GROUP BY timeend';
}
break;
// ******************** STATS_MODE_DETAILED ******************** //
case STATS_REPORT_USER_ACTIVITY:
$param->fields = 'statsreads as line1, statswrites as line2';
$param->line1 = get_string('statsuserreads');
$param->line2 = get_string('statsuserwrites');
$param->stattype = 'activity';
break;
case STATS_REPORT_USER_ALLACTIVITY:
$param->fields = 'statsreads+statswrites as line1';
$param->line1 = get_string('statsuseractivity');
$param->stattype = 'activity';
break;
case STATS_REPORT_USER_LOGINS:
$param->fields = 'statsreads as line1';
$param->line1 = get_string('statsuserlogins');
$param->stattype = 'logins';
break;
case STATS_REPORT_USER_VIEW:
$param->fields = 'statsreads as line1, statswrites as line2, statsreads+statswrites as line3';
$param->line1 = get_string('statsuserreads');
$param->line2 = get_string('statsuserwrites');
$param->line3 = get_string('statsuseractivity');
$param->stattype = 'activity';
break;
// ******************** STATS_MODE_RANKED ******************** //
case STATS_REPORT_ACTIVE_COURSES:
$param->fields = 'sum(stat1+stat2) AS line1';
$param->stattype = 'activity';
$param->orderby = 'line1 DESC';
$param->line1 = get_string('activity');
$param->graphline = 'line1';
break;
case STATS_REPORT_ACTIVE_COURSES_WEIGHTED:
$threshold = 0;
if (!empty($CFG->statsuserthreshold) && is_numeric($CFG->statsuserthreshold)) {
$threshold = $CFG->statsuserthreshold;
}
$param->fields = '';
$param->sql = 'SELECT activity.courseid, activity.all_activity AS line1, enrolments.highest_enrolments AS line2,
activity.all_activity / enrolments.highest_enrolments as line3
FROM (
SELECT courseid, sum(stat1+stat2) AS all_activity
FROM {stats_'.$param->table.'}
WHERE stattype=\'activity\' AND timeend >= '.(int)$param->timeafter.' AND roleid = 0 GROUP BY courseid
) activity
INNER JOIN
(
SELECT courseid, max(stat1) AS highest_enrolments
FROM {stats_'.$param->table.'}
WHERE stattype=\'enrolments\' AND timeend >= '.(int)$param->timeafter.' AND stat1 > '.(int)$threshold.'
GROUP BY courseid
) enrolments
ON (activity.courseid = enrolments.courseid)
ORDER BY line3 DESC';
$param->line1 = get_string('activity');
$param->line2 = get_string('users');
$param->line3 = get_string('activityweighted');
$param->graphline = 'line3';
break;
case STATS_REPORT_PARTICIPATORY_COURSES:
$threshold = 0;
if (!empty($CFG->statsuserthreshold) && is_numeric($CFG->statsuserthreshold)) {
$threshold = $CFG->statsuserthreshold;
}
$param->fields = '';
$param->sql = 'SELECT courseid, ' . $DB->sql_ceil('avg(all_enrolments)') . ' as line1, ' .
$DB->sql_ceil('avg(active_enrolments)') . ' as line2, avg(proportion_active) AS line3
FROM (
SELECT courseid, timeend, stat2 as active_enrolments,
stat1 as all_enrolments, '.$DB->sql_cast_char2real('stat2').'/'.$DB->sql_cast_char2real('stat1').' AS proportion_active
FROM {stats_'.$param->table.'}
WHERE stattype=\'enrolments\' AND roleid = 0 AND stat1 > '.(int)$threshold.'
) aq
WHERE timeend >= '.(int)$param->timeafter.'
GROUP BY courseid
ORDER BY line3 DESC';
$param->line1 = get_string('users');
$param->line2 = get_string('activeusers');
$param->line3 = get_string('participationratio');
$param->graphline = 'line3';
break;
case STATS_REPORT_PARTICIPATORY_COURSES_RW:
$param->fields = '';
$param->sql = 'SELECT courseid, sum(views) AS line1, sum(posts) AS line2,
avg(proportion_active) AS line3
FROM (
SELECT courseid, timeend, stat1 as views, stat2 AS posts,
'.$DB->sql_cast_char2real('stat2').'/'.$DB->sql_cast_char2real('stat1').' as proportion_active
FROM {stats_'.$param->table.'}
WHERE stattype=\'activity\' AND roleid = 0 AND stat1 > 0
) aq
WHERE timeend >= '.(int)$param->timeafter.'
GROUP BY courseid
ORDER BY line3 DESC';
$param->line1 = get_string('views');
$param->line2 = get_string('posts');
$param->line3 = get_string('participationratio');
$param->graphline = 'line3';
break;
}
/*
if ($courseid == SITEID && $mode != STATS_MODE_RANKED) { // just aggregate all courses.
$param->fields = preg_replace('/(?:sum)([a-zA-Z0-9+_]*)\W+as\W+([a-zA-Z0-9_]*)/i','sum($1) as $2',$param->fields);
$param->extras = ' GROUP BY timeend'.((!empty($param->aggregategroupby)) ? ','.$param->aggregategroupby : '');
}
*/
//TODO must add the SITEID reports to the rest of the reports.
return $param;
}
function stats_get_view_actions() {
return array('view','view all','history');
}
function stats_get_post_actions() {
return array('add','delete','edit','add mod','delete mod','edit section'.'enrol','loginas','new','unenrol','update','update mod');
}
function stats_get_action_names($str) {
global $CFG, $DB;
$mods = $DB->get_records('modules');
$function = 'stats_get_'.$str.'_actions';
$actions = $function();
foreach ($mods as $mod) {
$file = $CFG->dirroot.'/mod/'.$mod->name.'/lib.php';
if (!is_readable($file)) {
continue;
}
require_once($file);
$function = $mod->name.'_get_'.$str.'_actions';
if (function_exists($function)) {
$mod_actions = $function();
if (is_array($mod_actions)) {
$actions = array_merge($actions, $mod_actions);
}
}
}
// The array_values() forces a stack-like array
// so we can later loop over safely...
$actions = array_values(array_unique($actions));
$c = count($actions);
for ($n=0;$n<$c;$n++) {
$actions[$n] = $actions[$n];
}
return $actions;
}
function stats_get_time_options($now,$lastweekend,$lastmonthend,$earliestday,$earliestweek,$earliestmonth) {
$now = stats_get_base_daily(time());
// it's really important that it's TIMEEND in the table. ie, tuesday 00:00:00 is monday night.
// so we need to take a day off here (essentially add a day to $now
$now += 60*60*24;
$timeoptions = array();
if ($now - (60*60*24*7) >= $earliestday) {
$timeoptions[STATS_TIME_LASTWEEK] = get_string('numweeks','moodle',1);
}
if ($now - (60*60*24*14) >= $earliestday) {
$timeoptions[STATS_TIME_LAST2WEEKS] = get_string('numweeks','moodle',2);
}
if ($now - (60*60*24*21) >= $earliestday) {
$timeoptions[STATS_TIME_LAST3WEEKS] = get_string('numweeks','moodle',3);
}
if ($now - (60*60*24*28) >= $earliestday) {
$timeoptions[STATS_TIME_LAST4WEEKS] = get_string('numweeks','moodle',4);// show dailies up to (including) here.
}
if ($lastweekend - (60*60*24*56) >= $earliestweek) {
$timeoptions[STATS_TIME_LAST2MONTHS] = get_string('nummonths','moodle',2);
}
if ($lastweekend - (60*60*24*84) >= $earliestweek) {
$timeoptions[STATS_TIME_LAST3MONTHS] = get_string('nummonths','moodle',3);
}
if ($lastweekend - (60*60*24*112) >= $earliestweek) {
$timeoptions[STATS_TIME_LAST4MONTHS] = get_string('nummonths','moodle',4);
}
if ($lastweekend - (60*60*24*140) >= $earliestweek) {
$timeoptions[STATS_TIME_LAST5MONTHS] = get_string('nummonths','moodle',5);
}
if ($lastweekend - (60*60*24*168) >= $earliestweek) {
$timeoptions[STATS_TIME_LAST6MONTHS] = get_string('nummonths','moodle',6); // show weeklies up to (including) here
}
if (strtotime('-7 months',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LAST7MONTHS] = get_string('nummonths','moodle',7);
}
if (strtotime('-8 months',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LAST8MONTHS] = get_string('nummonths','moodle',8);
}
if (strtotime('-9 months',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LAST9MONTHS] = get_string('nummonths','moodle',9);
}
if (strtotime('-10 months',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LAST10MONTHS] = get_string('nummonths','moodle',10);
}
if (strtotime('-11 months',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LAST11MONTHS] = get_string('nummonths','moodle',11);
}
if (strtotime('-1 year',$lastmonthend) >= $earliestmonth) {
$timeoptions[STATS_TIME_LASTYEAR] = get_string('lastyear');
}
$years = (int)date('y', $now) - (int)date('y', $earliestmonth);
if ($years > 1) {
for($i = 2; $i <= $years; $i++) {
$timeoptions[$i*12+20] = get_string('numyears', 'moodle', $i);
}
}
return $timeoptions;
}
function stats_get_report_options($courseid,$mode) {
global $CFG, $DB;
$reportoptions = array();
switch ($mode) {
case STATS_MODE_GENERAL:
$reportoptions[STATS_REPORT_ACTIVITY] = get_string('statsreport'.STATS_REPORT_ACTIVITY);
if ($courseid != SITEID && $context = get_context_instance(CONTEXT_COURSE, $courseid)) {
$sql = 'SELECT r.id, r.name FROM {role} r JOIN {stats_daily} s ON s.roleid = r.id WHERE s.courseid = :courseid GROUP BY r.id, r.name';
if ($roles = $DB->get_records_sql($sql, array('courseid' => $courseid))) {
foreach ($roles as $role) {
$reportoptions[STATS_REPORT_ACTIVITYBYROLE.$role->id] = get_string('statsreport'.STATS_REPORT_ACTIVITYBYROLE). ' '.$role->name;
}
}
}
$reportoptions[STATS_REPORT_READS] = get_string('statsreport'.STATS_REPORT_READS);
$reportoptions[STATS_REPORT_WRITES] = get_string('statsreport'.STATS_REPORT_WRITES);
if ($courseid == SITEID) {
$reportoptions[STATS_REPORT_LOGINS] = get_string('statsreport'.STATS_REPORT_LOGINS);
}
break;
case STATS_MODE_DETAILED:
$reportoptions[STATS_REPORT_USER_ACTIVITY] = get_string('statsreport'.STATS_REPORT_USER_ACTIVITY);
$reportoptions[STATS_REPORT_USER_ALLACTIVITY] = get_string('statsreport'.STATS_REPORT_USER_ALLACTIVITY);
if (has_capability('report/stats:view', get_context_instance(CONTEXT_SYSTEM))) {
$site = get_site();
$reportoptions[STATS_REPORT_USER_LOGINS] = get_string('statsreport'.STATS_REPORT_USER_LOGINS);
}
break;
case STATS_MODE_RANKED:
if (has_capability('report/stats:view', get_context_instance(CONTEXT_SYSTEM))) {
$reportoptions[STATS_REPORT_ACTIVE_COURSES] = get_string('statsreport'.STATS_REPORT_ACTIVE_COURSES);
$reportoptions[STATS_REPORT_ACTIVE_COURSES_WEIGHTED] = get_string('statsreport'.STATS_REPORT_ACTIVE_COURSES_WEIGHTED);
$reportoptions[STATS_REPORT_PARTICIPATORY_COURSES] = get_string('statsreport'.STATS_REPORT_PARTICIPATORY_COURSES);
$reportoptions[STATS_REPORT_PARTICIPATORY_COURSES_RW] = get_string('statsreport'.STATS_REPORT_PARTICIPATORY_COURSES_RW);
}
break;
}
return $reportoptions;
}
function stats_fix_zeros($stats,$timeafter,$timestr,$line2=true,$line3=false) {
if (empty($stats)) {
return;
}
$timestr = str_replace('user_','',$timestr); // just in case.
$fun = 'stats_get_base_'.$timestr;
$now = $fun();
$times = array();
// add something to timeafter since it is our absolute base
$actualtimes = array();
foreach ($stats as $statid=>$s) {
//normalize the times in stats - those might have been created in different timezone, DST etc.
$s->timeend = $fun($s->timeend + 60*60*5);
$stats[$statid] = $s;
$actualtimes[] = $s->timeend;
}
$timeafter = array_pop(array_values($actualtimes));
while ($timeafter < $now) {
$times[] = $timeafter;
if ($timestr == 'daily') {
$timeafter = stats_get_next_day_start($timeafter);
} else if ($timestr == 'weekly') {
$timeafter = stats_get_next_week_start($timeafter);
} else if ($timestr == 'monthly') {
$timeafter = stats_get_next_month_start($timeafter);
} else {
return $stats; // this will put us in a never ending loop.
}
}
foreach ($times as $count => $time) {
if (!in_array($time,$actualtimes) && $count != count($times) -1) {
$newobj = new StdClass;
$newobj->timeend = $time;
$newobj->id = 0;
$newobj->roleid = 0;
$newobj->line1 = 0;
if (!empty($line2)) {
$newobj->line2 = 0;
}
if (!empty($line3)) {
$newobj->line3 = 0;
}
$newobj->zerofixed = true;
$stats[] = $newobj;
}
}
usort($stats,"stats_compare_times");
return $stats;
}
// helper function to sort arrays by $obj->timeend
function stats_compare_times($a,$b) {
if ($a->timeend == $b->timeend) {
return 0;
}
return ($a->timeend > $b->timeend) ? -1 : 1;
}
function stats_check_uptodate($courseid=0) {
global $CFG, $DB;
if (empty($courseid)) {
$courseid = SITEID;
}
$latestday = stats_get_start_from('daily');
if ((time() - 60*60*24*2) < $latestday) { // we're ok
return NULL;
}
$a = new stdClass();
$a->daysdone = $DB->get_field_sql("SELECT COUNT(DISTINCT(timeend)) FROM {stats_daily}");
// how many days between the last day and now?
$a->dayspending = ceil((stats_get_base_daily() - $latestday)/(60*60*24));
if ($a->dayspending == 0 && $a->daysdone != 0) {
return NULL; // we've only just started...
}
//return error as string
return get_string('statscatchupmode','error',$a);
}
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