<?php

require_once('snapshot.php');
require_once('report.php');
require_once('message.php');
require_once('user.php');
require_once('user_report.php');

const collapsedMessageCount = 20;

// In Java this is "DateTimeFormatter.ISO_LOCAL_DATE_TIME"
const jsonDateTimeFormat = 'Y-m-d\TH:i:s';

$dateTimeZone = new DateTimeZone('America/Chicago');

/** @var mysqli[] $connections */
$connections = array(); // String index = Connection name

/** @var User[] $users */ // Account id index
$users = array();

$categories = array(
    1 => "Hacking",
    2 => "Chat Abuse",
    3 => "Gameplay"
);

/** PARSE DB CONNECTIONS */

$dbConfigFile = new SplFileObject('database-config.dat');

if ($dbConfigFile->isFile())
{
    while (!$dbConfigFile->eof())
    {
        $line = trim($dbConfigFile->fgets());

        if ($line) // check not empty line
        {
            $parts = explode(' ', $line);
            $fullUrl = $parts[1];
            $urlParts = explode('/', $fullUrl);
            $host = $urlParts[0];
            $database = $urlParts[1];

            $name = $parts[0];
            $username = $parts[2];
            $password = $parts[3];

            $connection = new mysqli($host, $username, $password, $database);

            if ($connection->connect_error) {
                die("Connection \"$name\" failed: $connection->connect_error");
            }

            $connections[$name] = $connection;
        }
    }
}
else
{
    die('database-config.dat does not exist or is not a file.');
}

/**
 * @param String $name
 * @return mysqli
 */
function getConnection($name)
{
    global $connections;
    return $connections[$name];
}

/**
 * @param Int $reportId
 * @return Report
 */
function getReport($reportId)
{
    $connection = getConnection("ACCOUNT");
    $statement = $connection->prepare('SELECT reports.suspectId, reports.categoryId, reportHandlers.handlerId FROM reports
                                        LEFT JOIN reportHandlers ON reports.id = reportHandlers.reportId
                                        LEFT JOIN reportResults ON reports.id = reportResults.reportId
                                      WHERE reports.id = ?');

    $statement->bind_param('i', $reportId);
    $statement->execute();
    $statement->store_result();
    $statement->bind_result($suspectId, $categoryId, $handlerId);

    if ($statement->fetch())
    {
        $suspectUser = getUser($suspectId);
        $reportReasons = getReporters($reportId);
        $handlerUser = null;

        if (!is_null($handlerId))
        {
            $handlerUser = getUser($handlerId);
        }

        return new Report($reportId, $handlerUser, $suspectUser, $reportReasons, $categoryId);
    }

    $statement->close();

    return null;
}

function getSnapshot($reportId)
{
    /** @var $messages Message[] */
    $messages = array();

    $connection = getConnection("ACCOUNT");
    $statement = $connection->prepare("SELECT id, senderId, snapshotType, `server`, `time`, message FROM reportSnapshots, snapshots
                                          WHERE snapshots.id = reportSnapshots.snapshotId
                                            AND reportSnapshots.reportId = ?");

    $statement->bind_param('i', $reportId);
    $statement->execute();
    $statement->bind_result($snapshotId, $senderId, $snapshotType, $server, $time, $message);
    $statement->store_result();

    while ($statement->fetch())
    {
        $recipients = getUsers(getSnapshotRecipients($snapshotId));
        $message = new Message(getUser($senderId), $recipients, $time, $snapshotType, $message, $server);
        array_push($messages, $message);
    }

    $statement->close();
    $snapshotUsers = array();

    foreach ($messages as $message)
    {
        $sender = $message->getSender();
        $snapshotUsers[$sender->getId()] = $sender;
        
        foreach ($message->getRecipients() as $recipient)
        {
            $snapshotUsers[$recipient->getId()] = $recipient;
        }
    }
    
    return new Snapshot($reportId, $messages, $snapshotUsers);
}

/**
 * @param $snapshotId
 * @return Integer[] array
 */
function getSnapshotRecipients($snapshotId)
{
    $recipientIds = array();
    $connection = getConnection("ACCOUNT");
    $statement = $connection->prepare("SELECT recipientId FROM snapshotRecipients WHERE snapshotId = ?");

    $statement->bind_param('i', $snapshotId);
    $statement->execute();
    $statement->bind_result($recipientId);

    while ($statement->fetch())
    {
        array_push($recipientIds, $recipientId);
    }

    $statement->close();

    return $recipientIds;
}

/**
 * @param Integer[] $ids
 * @return User[] array
 */
function getUsers($ids)
{
    $users = array();
    
    foreach ($ids as $id)
    {
        array_push($users, getUser($id));
    }
    
    return $users;
}

/**
 * @param $id
 * @return User
 */
function getUser($id)
{
    if (isset($users[$id]))
    {
        return $users[$id];
    }
    else
    {
        $connection = getConnection("ACCOUNT");
        $statement = $connection->prepare('SELECT uuid, `name`, rank FROM accounts WHERE id = ?');

        $statement->bind_param('i', $id);
        $statement->execute();
        $statement->bind_result($uuid, $name, $rank);
        $statement->fetch();

        $user = new User($id, $uuid, $name, parseRank($rank));
        $users[$id] = $user;
        $statement->close();

        return $user;
    }
}

/**
 * @param int $reportId
 * @return UserReport[]
 */
function getReporters($reportId)
{
    global $dateTimeZone;

    $connection = getConnection("ACCOUNT");
    $statement = $connection->prepare("SELECT reporterId, `time`, reason FROM reportReasons WHERE reportId = ?");
    $reportReasons = array();

    $statement->bind_param('i', $reportId);
    $statement->execute();
    $statement->bind_result($reporterId, $time, $reason);
    $statement->store_result(); // prevents issues with other queries running before this statement is closed

    while ($statement->fetch())
    {
        $reportReasons[$reporterId] = new UserReport(getUser($reporterId), new DateTime($time, $dateTimeZone), $reason);
    }

    $statement->close();

    return $reportReasons;
}

/**
 * @param Snapshot $snapshot
 * @param Report $report
 * @return User[]
 */
function getInvolvedUsers($snapshot, $report)
{
    $involvedUsers = $snapshot->getPlayers();
    $involvedUsers[$report->getSuspect()->getId()] = $report->getSuspect();

    foreach ($report->getReporters() as $reporterReason) {
        $reporter = $reporterReason->getUser();
        $involvedUsers[$reporter->getId()] = $reporter;
    }

    return $involvedUsers;
}

/**
 * @param string $dbRank
 * @return string
 */
function parseRank($dbRank)
{
    $rank = $dbRank;

    if ($dbRank == 'ALL')
    {
        $rank = 'PLAYER';
    }

    return $rank;
}

/**
 * @param Message $messageA
 * @param Message $messageB
 * @return int
 */
function compareMessageTimes($messageA, $messageB)
{
    return $messageA->getTimestamp()->getTimestamp() - $messageB->getTimestamp()->getTimestamp();
}

/**
 * @param String $dateTime
 * @param DateTimeZone $timezone
 * @return DateTime
 */
function parseDateTime($dateTime, $timezone)
{
    return DateTime::createFromFormat(jsonDateTimeFormat, $dateTime, $timezone);
}

/**
 * Converts an interval to minutes, days or months, depending on the size.
 *
 * @param DateInterval $interval
 * @return string
 */
function approximateHumanInterval($interval)
{
    if ($interval->y > 0)
    {
        $humanString = $interval->y . ' year' . ($interval->y != 1 ? 's' : '');
    } else if ($interval->m > 0)
    {
        $humanString = $interval->m . ' month' . ($interval->m != 1 ? 's' : '');
    }
    else if ($interval->d > 0)
    {
        $humanString = $interval->d . ' day' . ($interval->d != 1 ? 's' : '');
    }
    else if ($interval->h > 0)
    {
        $humanString = $interval->h . ' hour' . ($interval->h != 1 ? 's' : '');
    }
    else if ($interval->i > 0)
    {
        $humanString = $interval->i . ' minute' . ($interval->i != 1 ? 's' : '');
    }
    else
    {
        $humanString = $interval->s . ' second' . ($interval->s != 1 ? 's' : '');
    }

    return $humanString;
}

function getExpandedURL()
{
    $vars = $_GET;
    $vars['expanded'] = true;
    return '?' . http_build_query($vars);
}

$validId = isset($_GET['id']);
$idError = "";

$id = null;
$expanded = null;
$report = null;
$snapshot = null;

if ($validId)
{
    $id = $_GET['id'];
    $expanded = isset($_GET['expanded']) && $_GET['expanded'];
    $report = getReport($id);

    if ($report)
    {
        $snapshot = getSnapshot($id);
    }
    else
    {
        $validId = false;
        $idError = "Invalid id.";
    }
}
?>
<!DOCTYPE html>
<html>
<head>
    <script src="js/jquery.js"></script>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <script src="js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="css/tiger.css">
    <link href='https://fonts.googleapis.com/css?family=Crete+Round' rel='stylesheet' type='text/css'>
    <link href='https://fonts.googleapis.com/css?family=Oswald' rel='stylesheet' type='text/css'>
    <title>
        <?php if ($validId): ?>
            Report #<?= $report->getId() ?>
        <?php else: ?>
            Report System
        <?php endif; ?>

        &middot; Mineplex
    </title>
</head>
<body>
<div id="wrapper">
    <div id="header">
        <img src="img/logo.png" height="70px" width="70px" />
        <h1>Report System</h1>
    </div>
    <div id="search">
        <form id="id-input" name="id-input" action="view.php" method="get">
            <div class="input-group">
                <input name="id" type="text" class="form-control" placeholder="Enter report id...">
                <span class="input-group-btn">
                    <button class="btn btn-secondary" type="submit" form="id-input"><i class="fa fa-search"></i> Search</button>
                </span>
            </div>
        </form>
    </div>

    <?php if (isset($_GET['id']) && !$validId && !empty($idError)): ?>
        <div id="content" class="center-block" style="text-align: center; background-color: rgba(204, 34, 42, 0.52);">
            <p class="error-oh-no" style="font-size: 60px;">What did you do?!?!?</p>
            <img src="img/shaun.gif" />
            <p class="error-oh-no" style="font-size: 40px;">Error: <?= $idError ?></p>
            <br>
        </div>
    <?php else: ?>
        <?php if (!isset($_GET['id'])) exit(); ?>

        <div id="content">
            <div>
                <hr>
                <h2 style="font-family: 'Oswald', sans-serif; text-align: center;">
                    Report #<?= $report->getId() ?>
                </h2>
                <hr>
            </div>
            <div class="row">
                <div id="chat" class="col-lg-7">
                    <h4><i class="fa fa-comments"></i>&nbsp;&nbsp;&nbsp;Chat Log</h4>
                    <hr>
                    <div id="log" class="text-muted ">
                        <?php

                        // INITIALIZE

                        // Get messages and the amount that we are going to display
                        $messages = $snapshot->getMessages();
                        $messageCount = count($messages);
                        $displayAmount = $expanded || $messageCount <= collapsedMessageCount ? $messageCount : collapsedMessageCount;

                        // Put all reporter usernames in array for easy access later
                        $reporterUsernames = array();
                        foreach ($report->getReporters() as $reporterReason)
                        {
                            $reporterUsernames[count($reporterUsernames)] = $reporterReason->getUser()->getUsername();
                        }

                        $involvedUsers = getInvolvedUsers($snapshot, $report);

                        $reportCreationTime = $report->getTimeCreated();
                        $age = approximateHumanInterval($reportCreationTime->diff(new DateTime('now', $reportCreationTime->getTimezone())));

                        if ($displayAmount == 0): ?>
                            <span class="black">No chat log available for this report.</span>
                        <?php else:
                            for ($i = 0; $i < $displayAmount; $i++):
                                $message = $messages[$i];
                                $typeId = $message->getType();
                                $typeDisplayName = Message::$TYPE_DISPLAY_NAMES[$typeId];
                                $isPM = $typeId == Message::TYPE_PM;

                                // If this is a PM, then the "-> <recipient>" suffix will be applied.
                                $involved = $message->getSender()->getUsername() . ($isPM ? " -> " . $message->getRecipients()[0]->getUsername() : "");
                                ?>

                                <span class="label <?= $isPM ? "label-primary chat pm" : "label-info chat" ?>" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;"><?= $typeDisplayName ?></span>
                                <span class="black"><?= $involved; ?>:</span> <?= $message->getMessage(); ?>

                                <?php if ($i < $displayAmount - 1): // Don't break on the last element ?>
                                <br />
                            <?php endif; ?>
                            <?php endfor; ?>
                        <?php endif; ?>
                    </div>

                    <?php if (!$expanded && $displayAmount < $messageCount): ?>
                        <br />
                        <a href="<?= getExpandedURL() ?>">Show All (<?= $messageCount ?> messages)</a>
                    <?php endif; ?>
                </div>
                <div id="users" class="col-lg-5">
                    <h4><i class="fa fa-info-circle"></i>&nbsp;&nbsp;&nbsp;Information</h4>
                    <hr>
                    <div class="row">
                        <div class="col-lg-12">
                            <i class="fa fa-clock-o fa-fw"></i>
                            <span class="label label-pill label-default" title="Last Report: <?= $reportCreationTime->format('Y/m/d H:i:s T') ?>"><?= $age . ' ago' ?></span>
                            <br>

                            <i class="fa fa-sitemap fa-fw"></i>
                            <span class="label label-pill label-primary"><?= $categories[$report->getCategory()] ?></span>
                            <br>

                            <i class="fa fa-user-plus fa-fw"></i>
                            <span class="label label-pill label-success">Reported by <?= implode(", ", $reporterUsernames) ?></span>
                            <br>

                            <i class="fa fa-user-times fa-fw"></i>
                            <span class="label label-pill label-danger">Suspect is <?= $report->getSuspect()->getUsername() ?></span>
                            <br>

                            <i class="fa fa-gavel fa-fw"></i>
                            <span class="label label-pill label-warning">
                                <?php if ($report->getHandler() != null): ?>
                                    Staff Member assigned is <?= $report->getHandler()->getUsername() ?>
                                <?php else: ?>
                                    No Staff Member assigned
                                <?php endif; ?>
                            </span>
                            <br>
                        </div>
                    </div>
                    <br>

                    <h4><i class="fa fa-users"></i>&nbsp;&nbsp;&nbsp;Users</h4>
                    <hr>
                    <?php foreach($involvedUsers as $user): ?>
                        <img src="http://cravatar.eu/avatar/<?= $user->getUUID() ?>/55.png" class="pull-left" />
                        &nbsp;&nbsp;<b class="name"><?= $user->getUsername() ?></b> <span class="label label-staff name"><?= ucwords(strtolower($user->getRank())) ?></span><br> <!-- TODO different styling for different ranks -->&nbsp;
                        <code style="font-size: 11px;"><?= $user->getUUID() ?></code>
                        <br><br>
                    <?php endforeach; ?>
                </div>
            </div>
        </div>
    <?php endif; ?>
    <div id="footer">
        <a href="http://www.mineplex.com"><img src="img/logo-full.png" width="225px" /></a>
        <div class="btn-group pull-right indent-link" style="font-family: 'Crete Round', serif; padding-top: 10px;">
            <a href="http://www.mineplex.com" class="btn btn-link btn-small text-muted">Home</a>
            <a href="http://www.mineplex.com/shop/" class="btn btn-link btn-small text-muted">Shop</a>
            <a href="http://www.mineplex.com/forums/" class="btn btn-link btn-small text-muted">Forums</a>
            <a href="http://www.mineplex.com/supporthub/" class="btn btn-link btn-small text-muted">Support</a>
        </div>
    </div>
</div>
</body>
</html>
<?php foreach ($connections as $connection) {
    $connection->close();
} ?>