<?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/>.

/**
 * Display user activity reports for a course (totals)
 *
 * @package    report
 * @subpackage outline
 * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require('../../config.php');
require_once($CFG->dirroot.'/report/outline/locallib.php');

$id = required_param('id',PARAM_INT);       // course id

$course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);

$PAGE->set_url('/report/outline/index.php', array('id'=>$id));
$PAGE->set_pagelayout('report');

require_login($course);
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('report/outline:view', $context);

add_to_log($course->id, 'course', 'report outline', "report/outline/index.php?id=$course->id", $course->id);

$showlastaccess = true;
$hiddenfields = explode(',', $CFG->hiddenuserfields);

if (array_search('lastaccess', $hiddenfields) and !has_capability('moodle/user:viewhiddendetails', $context)) {
    $showlastaccess = false;
}

$stractivityreport = get_string('pluginname', 'report_outline');
$stractivity       = get_string('activity');
$strlast           = get_string('lastaccess');
$strreports        = get_string('reports');
$strviews          = get_string('views');
$strrelatedblogentries = get_string('relatedblogentries', 'blog');

$PAGE->set_title($course->shortname .': '. $stractivityreport);
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($course->fullname));

if (!$logstart = $DB->get_field_sql("SELECT MIN(time) FROM {log}")) {
    print_error('logfilenotavailable');
}

echo $OUTPUT->container(get_string('computedfromlogs', 'admin', userdate($logstart)), 'loginfo');

$outlinetable = new html_table();
$outlinetable->attributes['class'] = 'generaltable boxaligncenter';
$outlinetable->cellpadding = 5;
$outlinetable->id = 'outlinetable';
$outlinetable->head = array($stractivity, $strviews);

if ($CFG->useblogassociations) {
    $outlinetable->head[] = $strrelatedblogentries;
}

if ($showlastaccess) {
    $outlinetable->head[] = $strlast;
}

$modinfo = get_fast_modinfo($course);
$sections = get_all_sections($course->id);

$sql = "SELECT cm.id, COUNT('x') AS numviews, MAX(time) AS lasttime
          FROM {course_modules} cm
               JOIN {modules} m ON m.id = cm.module
               JOIN {log} l     ON l.cmid = cm.id
         WHERE cm.course = ? AND l.action LIKE 'view%' AND m.visible = 1
      GROUP BY cm.id";
$views = $DB->get_records_sql($sql, array($course->id));

$prevsecctionnum = 0;
foreach ($modinfo->sections as $sectionnum=>$section) {
    foreach ($section as $cmid) {
        $cm = $modinfo->cms[$cmid];
        if (!$cm->has_view()) {
            continue;
        }
        if (!$cm->uservisible) {
            continue;
        }
        if ($prevsecctionnum != $sectionnum) {
            $sectionrow = new html_table_row();
            $sectionrow->attributes['class'] = 'section';
            $sectioncell = new html_table_cell();
            $sectioncell->colspan = count($outlinetable->head);

            $sectiontitle = get_section_name($course, $sections[$sectionnum]);

            $sectioncell->text = $OUTPUT->heading($sectiontitle, 3);
            $sectionrow->cells[] = $sectioncell;
            $outlinetable->data[] = $sectionrow;

            $prevsecctionnum = $sectionnum;
        }

        $dimmed = $cm->visible ? '' : 'class="dimmed"';
        $modulename = get_string('modulename', $cm->modname);

        $reportrow = new html_table_row();
        $activitycell = new html_table_cell();
        $activitycell->attributes['class'] = 'activity';

        $activityicon = $OUTPUT->pix_icon('icon', $modulename, $cm->modname, array('class'=>'icon'));

        $attributes = array();
        if (!$cm->visible) {
            $attributes['class'] = 'dimmed';
        }

        $activitycell->text = $activityicon . html_writer::link("$CFG->wwwroot/mod/$cm->modname/view.php?id=$cm->id", format_string($cm->name), $attributes);;

        $reportrow->cells[] = $activitycell;

        $numviewscell = new html_table_cell();
        $numviewscell->attributes['class'] = 'numviews';

        if (!empty($views[$cm->id]->numviews)) {
            $numviewscell->text = $views[$cm->id]->numviews;
        } else {
            $numviewscell->text = '-';
        }

        $reportrow->cells[] = $numviewscell;

        if ($CFG->useblogassociations) {
            require_once($CFG->dirroot.'/blog/lib.php');
            $blogcell = new html_table_cell();
            $blogcell->attributes['class'] = 'blog';
            if ($blogcount = blog_get_associated_count($course->id, $cm->id)) {
                $blogcell->text = html_writer::link('/blog/index.php?modid='.$cm->id, $blogcount);
            } else {
                $blogcell->text = '-';
            }
            $reportrow->cells[] = $blogcell;
        }

        if ($showlastaccess) {
            $lastaccesscell = new html_table_cell();
            $lastaccesscell->attributes['class'] = 'lastaccess';

            if (isset($views[$cm->id]->lasttime)) {
                $timeago = format_time(time() - $views[$cm->id]->lasttime);
                $lastaccesscell->text = userdate($views[$cm->id]->lasttime)." ($timeago)";
            }
            $reportrow->cells[] = $lastaccesscell;
        }
        $outlinetable->data[] = $reportrow;
    }
}
echo html_writer::table($outlinetable);

echo $OUTPUT->footer();