<?php
if (!file_exists(__DIR__ . '/config.php')) {
    die("ERROR: Millions not installed.");
}
$config = require 'config.php';
$pdo = new MyPDO('sqlite:' . __DIR__ . '/' . $config['database']);

$site = false;
$error = false;

if (!empty($_GET['for'])) {
    $site = $pdo->run('SELECT * FROM sites WHERE host=?', [$_GET['for']])->fetch();

    if ($site && $site['stats_public']==0) {
        if (!isset($_GET['key']) || $_GET['key']!=$site['stats_key']) {
            // we need password
            $site = false;
            $error = 'These stats are locked. You need to provide right ?key in URL.';
        }
    }

    if ($site) {

        if (!empty($_GET['date'])) {

            $visits = false;
            $totalVisits = $pdo->run('SELECT COUNT(*) FROM visits WHERE site_id=? AND date(ts, "unixepoch")=?', [$site['id'], $_GET['date']])->fetchColumn();
            $byPaths = $pdo->run('SELECT path, COUNT(*) as visits
FROM visits
WHERE site_id=? AND date(ts, "unixepoch")=?
GROUP BY path
ORDER BY visits DESC LIMIT 10', [$site['id'], $_GET['date']])->fetchAll();
            $byBrowsers = $pdo->run('SELECT browser, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=0 AND date(ts, "unixepoch")=?
GROUP BY browser
ORDER BY visits DESC', [$site['id'], $_GET['date']])->fetchAll();
            $byPlatforms = $pdo->run('SELECT platform, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=0 AND date(ts, "unixepoch")=?
GROUP BY platform
ORDER BY visits DESC', [$site['id'], $_GET['date']])->fetchAll();
            $byRefs = $pdo->run('SELECT ref, COUNT(*) as visits
FROM visits
WHERE site_id=? AND ref!="" AND date(ts, "unixepoch")=?
GROUP BY ref
ORDER BY visits DESC', [$site['id'], $_GET['date']])->fetchAll();

            $byBots = $pdo->run('SELECT browser, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=1 AND date(ts, "unixepoch")=?
GROUP BY browser
ORDER BY visits DESC', [$site['id'], $_GET['date']])->fetchAll();

        } else {
            $labels = $visits = $uniques = [];
            for ($d=14; $d>=0; $d--) {
                $labels[date('Y-m-d', strtotime('-'.$d.'days'))] = date('Dd', strtotime('-'.$d.'days'));
                $visits[date('Y-m-d', strtotime('-'.$d.'days'))] = 0;
                $uniques[date('Y-m-d', strtotime('-'.$d.'days'))] = 0;
            }

            $last14days = $pdo->run('SELECT date(datetime(ts, \'unixepoch\')) as date, COUNT(*) as visits
FROM visits
WHERE site_id=:site_id AND date>=:date_min AND date<=:date_max
GROUP BY date', [':site_id'=>$site['id'], ':date_min'=>date('Y-m-d', strtotime('-14 days')), ':date_max'=>date('Y-m-d')]);
            foreach ($last14days as $stat) {
                $visits[$stat['date']] = (int) $stat['visits'];
            }

            $last14daysUniq = $pdo->run('SELECT date(datetime(ts, \'unixepoch\')) as date, COUNT(*) as visits
FROM visits
WHERE site_id=:site_id AND is_unique=1 AND date>=:date_min AND date<=:date_max
GROUP BY date', [':site_id'=>$site['id'], ':date_min'=>date('Y-m-d', strtotime('-14 days')), ':date_max'=>date('Y-m-d')]);
            foreach ($last14daysUniq as $stat) {
                $uniques[$stat['date']] = (int) $stat['visits'];
            }

            $totalVisits = $pdo->run('SELECT COUNT(*) FROM visits WHERE site_id=?', [$site['id']])->fetchColumn();
            $byPaths = $pdo->run('SELECT path, COUNT(*) as visits
FROM visits
WHERE site_id=?
GROUP BY path
ORDER BY visits DESC LIMIT 10', [$site['id']])->fetchAll();
            $byBrowsers = $pdo->run('SELECT browser, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=0
GROUP BY browser
ORDER BY visits DESC', [$site['id']])->fetchAll();
            $byPlatforms = $pdo->run('SELECT platform, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=0
GROUP BY platform
ORDER BY visits DESC', [$site['id']])->fetchAll();
            $byRefs = $pdo->run('SELECT ref, COUNT(*) as visits
FROM visits
WHERE site_id=? AND ref!=""
GROUP BY ref
ORDER BY visits DESC', [$site['id']])->fetchAll();

            $byBots = $pdo->run('SELECT browser, COUNT(*) as visits
FROM visits
WHERE site_id=? AND is_bot=1
GROUP BY browser
ORDER BY visits DESC', [$site['id']])->fetchAll();
        }


    } else {
        if (!$error) {
            $error = 'We do not track this site.';
        }
    }
} else {
    $sites = $pdo->run('SELECT host, label, COUNT(*) AS visits, stats_public
FROM visits
INNER JOIN sites ON visits.site_id=sites.id
GROUP BY site_id
ORDER BY visits DESC');
}

?><!DOCTYPE html>
<html lang="cs">
<head>
    <meta charset="UTF-8">
    <title>stats <?php if ($site) echo ' - ' . $site['label']; ?></title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/yegor256/tacit@gh-pages/tacit-css-1.5.1.min.css"/>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.js"></script>
    <style>
    .progress { display: block; width: 100%; height: 5px; background-color: lightgrey; }
    .progress > div { background-color: green; height: 5px; }
    </style>
</head>
<body>
<section>
<a href="stats.php">Millions web counter</a>:
<?php if ($site) { ?>
<h1><?php echo $site['label']; ?></h1>

<?php if ($visits) { ?>
<canvas id="canvas"></canvas>
<?php foreach ($labels as $ymd=>$label) {
    echo '<a href="stats.php?for=' . $site['host'] . '&date=' . $ymd . '">'  . $label . '</a> ';
} ?>
<script>
    window.chartColors = {
        red: 'rgb(255, 99, 132)',
        orange: 'rgb(255, 159, 64)',
        yellow: 'rgb(255, 205, 86)',
        green: 'rgb(75, 192, 192)',
        blue: 'rgb(54, 162, 235)',
        purple: 'rgb(153, 102, 255)',
        grey: 'rgb(201, 203, 207)'
    };

    var color = Chart.helpers.color;
    var barChartData = {
        labels: <?php echo json_encode(array_values($labels)); ?>,
        datasets: [{
            label: 'Total visitors',
            backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
            borderColor: window.chartColors.red,
            borderWidth: 1,
            fill: false,
            lineTension: 0,
            data: <?php echo json_encode(array_values($visits)); ?>
        }, {
            label: 'Unique visitors',
            backgroundColor: color(window.chartColors.blue).alpha(0.5).rgbString(),
            borderColor: window.chartColors.blue,
            borderWidth: 1,
            fill: false,
            lineTension: 0,
            data: <?php echo json_encode(array_values($uniques)); ?>
        }]

    };

    window.onload = function() {
        var ctx = document.getElementById('canvas').getContext('2d');
        window.myBar = new Chart(ctx, {
            type: 'line',
            data: barChartData,
            options: {
                responsive: true,
                legend: {
                    position: 'top',
                }
            }
        });

    };
</script>
<?php } // if $visits ?>

<?php
if ($totalVisits==0 && !empty($_GET['date'])) {
    echo '<p>no visits this day!</p>';
}

if (count($byPaths)) {
    echo '<h2>Top '.count($byPaths).' visited pages</h2>';
    foreach ($byPaths as $page) {
        echo '<div><a href="//' . $site['host'] . $page['path'] . '" rel="nofollow">'.$page['path'].'</a>';
        echo ' ' . $page['visits'] . '× -  ' . pct($page['visits'], $totalVisits) . '%<div class="progress"><div style="width: '.pct($page['visits'], $totalVisits).'%"></div></div>';
    }
}

if (count($byBrowsers)) {
    echo '<h2>Top browsers</h2>';
    foreach ($byBrowsers as $page) {
        echo '<div>'.$page['browser'].'';
        echo ' ' . $page['visits'] . '× -  ' . pct($page['visits'], $totalVisits) . '%<div class="progress"><div style="width: '.pct($page['visits'], $totalVisits).'%"></div></div>';
    }
}

if (count($byPlatforms)) {
    echo '<h2>Top platforms</h2>';
    foreach ($byPlatforms as $page) {
        echo '<div>'.$page['platform'];
        echo ' ' . $page['visits'] . '× -  ' . pct($page['visits'], $totalVisits) . '%<div class="progress"><div style="width: '.pct($page['visits'], $totalVisits).'%"></div></div>';
    }
}

if (count($byRefs)) {
    echo '<h2>Top references</h2>';
    foreach ($byRefs as $page) {
        echo '<div>'.$page['ref'];
        echo ' ' . $page['visits'] . '× -  ' . pct($page['visits'], $totalVisits) . '%<div class="progress"><div style="width: '.pct($page['visits'], $totalVisits).'%"></div></div>';
    }
}

if (count($byBots)) {
    echo '<h2>Top bots</h2>';
    foreach ($byBots as $page) {
        echo '<div>'.$page['browser'];
        echo ' ' . $page['visits'] . '× -  ' . pct($page['visits'], $totalVisits) . '%<div class="progress"><div style="width: '.pct($page['visits'], $totalVisits).'%"></div></div>';
    }
}

?>

    <?php

} elseif ($error) {
    echo '<br><strong>'.$error.'</strong>';
} else {
    echo '<table><tr><th>Site</th><th>domain</th><th>#visits</th></tr>';
    foreach ($sites as $site) {
        echo '<tr><td>'.$site['label'].'</td><td>'.$site['host'].'</td><td>';
        if ($site['stats_public']) echo '<a href="stats.php?for=' . $site['host'] . '" rel="nofollow">';
        echo $site['visits'];
        if ($site['stats_public']) echo '</a>';
        echo '</td></tr>';
    }
    echo '</table>';
}
?>
    <hr>
    <a href="/">about/privacy policy</a>
</section>

</body>
</html>
<?php

class MyPDO extends PDO
{
    public function __construct($dsn, $username = NULL, $password = NULL, $options = [])
    {
        $default_options = [
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
            PDO::ATTR_EMULATE_PREPARES => false,
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        ];
        $options = array_replace($default_options, $options);
        parent::__construct($dsn, $username, $password, $options);
    }
    public function run($sql, $args = NULL)
    {
        if (!$args)
        {
            return $this->query($sql);
        }
        $stmt = $this->prepare($sql);
        $stmt->execute($args);
        return $stmt;
    }
}

function pct($of, $total){
    $p1 = $total / 100;
    return round($of / $p1);
}