<?php

require_once('snapshot.php');
require_once('report.php');
require_once('message.php');
require_once('player.php');

const dataDir = 'data/';
const collapsedMessageCount = 20;

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

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

/** 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 String $filename
 * @return array JSON data array.
 */
function toDataArray($filename)
{
    return json_decode(file_get_contents($filename), true);
}

/**
 * @param String $identifier
 * @param array $snapshotData Snapshot data array.
 * @return Snapshot
 */
function toSnapshot($identifier, $snapshotData)
{
    $timezone = new DateTimeZone($snapshotData["timezone"]);
    $players = toPlayers($snapshotData['usernames']);
    $messages = toMessages($players, $snapshotData['snapshots'], $timezone);
    $generated = parseDateTime($snapshotData["generated"], $timezone);
    return new Snapshot($identifier, $messages, $players, $generated);
}

/**
 * @param array $reportData
 * @param Player[] $players
 * @return Report
 */
function toReport($reportData, $players)
{
    $id = $reportData["id"];
    $serverName = $reportData["serverName"];
    $handler = array_key_exists("handler", $reportData) ? getPlayer($players, $reportData["handler"]) : null;
    $suspect = getPlayer($players, $reportData["suspect"]);
    $reporters = toReporters($players, $reportData["reporters"]);
    return new Report($id, $serverName, $handler, $suspect, $reporters);
}

/**
 * @param Player[] $players
 * @param array $messagesData Messages data array.
 * @param DateTimeZone $timezone
 * @return Message[]
 */
function toMessages($players, $messagesData, $timezone)
{
    $messages = array();

    for ($i = 0; $i < count($messagesData); $i++)
    {
        $messages[$i] = getMessage($players, $messagesData[$i], $timezone);
    }

    usort($messages, 'compareMessageTimes');
    return $messages;
}

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

/**
 * @param Player[] $players
 * @param array $messageData Message data array.
 * @param DateTimeZone $timezone
 * @return Message
 */
function getMessage($players, $messageData, $timezone)
{
    $sender = getPlayer($players, $messageData['sender']);
    $recipients = getPlayersFromUUIDs($players, $messageData['recipients']);
    $dateTime = parseDateTime($messageData['time'], $timezone);
    $type = Message::getTypeFromString($messageData['type']);
    $message = $messageData['message'];

    return new Message($sender, $recipients, $dateTime, $type, $message);
}

/**
 * @param Player[] $players
 * @param String[] $uuidArray the UUIDs of the players to fetch
 * @return Player[]
 */
function getPlayersFromUUIDs($players, $uuidArray)
{
    $matchedPlayers = array();

    for ($i = 0; $i < count($uuidArray); $i++)
    {
        $matchedPlayers[$i] = getPlayer($players, $uuidArray[$i]);
    }

    return $matchedPlayers;
}

/**
 * @param Player[] $playersArray
 * @return Player[]
 */
function toPlayers($playersArray) // String UUID as Key
{
    $players = array();

    foreach ($playersArray as $uuid => $username)
    {
        $connection = getConnection("ACCOUNT");
        $statement = $connection->prepare("SELECT `rank` FROM `accounts` WHERE `uuid` = ?;");
        $statement->bind_param('s', $uuid);
        $statement->execute();
        $statement->bind_result($rank);
        $statement->fetch();
        $statement->close();

        $players[$uuid] = new Player($uuid, $username, $rank);
    }

    return $players;
}

/**
 * @param $playersArray
 * @param $reportersArray
 * @return SplObjectStorage
 */
function toReporters($playersArray, $reportersArray)
{
    $reporters = new SplObjectStorage();

    foreach ($reportersArray as $reporterUUID => $reason)
    {
        $reporters[getPlayer($playersArray, $reporterUUID)] = $reason;
    }

    return $reporters;
}

/**
 * @param Player[] $players
 * @param String $uuid
 * @return Player
 */
function getPlayer($players, $uuid)
{
    $player = $players[$uuid];

    if ($player != null)
    {
        return $player;
    }
    else
    {
        throw new RuntimeException('Player for UUID not found.');
    }
}

/**
 * @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->m > 0)
    {
        $humanString = $interval->m . ' month' . ($interval->m != 0 ? 's' : '');
    }
    else if ($interval->d > 0)
    {
        $humanString = $interval->d . ' day' . ($interval->d != 0 ? 's' : '');
    }
    else if ($interval->h > 0)
    {
        $humanString = $interval->h . ' hour' . ($interval->h != 0 ? 's' : '');
    }
    else
    {
        $humanString = $interval->i . ' minute' . ($interval->i != 0 ? 's' : '');
    }

    return $humanString;
}

/**
 * @param String $input
 * @return String
 */
function removeBadCharacters($input)
{
    return preg_replace('/[^A-Za-z0-9_\-]/', '_', $input);
}

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

$validIdentifier = isset($_GET['identifier']);
$identifierError = "";

$identifier = null;
$expanded = null;
$filePath = null;
$snapshot = null;
$report = null;

if ($validIdentifier)
{

    $identifier = removeBadCharacters($_GET['identifier']); // prevents escaping
    $filePath = dataDir . $identifier . '.json';

    if (file_exists($filePath))
    {
        $dataArray = toDataArray($filePath);
        $snapshot = toSnapshot($identifier, $dataArray);
        $report = toReport($dataArray['report'], $snapshot->getPlayers());
        $expanded = isset($_GET['expanded']) && $_GET['expanded'];
    }
    else
    {
        $validIdentifier = false;
        $identifierError = "Invalid identifier.";
    }
}
?>
<!DOCTYPE html>
<html>
<head>
    <script src="js/jquery.js"></script>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <script src="js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
    <link rel="stylesheet" href="css/tiger.css">
    <link href='https://fonts.googleapis.com/css?family=Crete+Round' rel='stylesheet' type='text/css'>
    <link href='https://fonts.googleapis.com/css?family=Oswald' rel='stylesheet' type='text/css'>
    <title>
        <?php if ($validIdentifier): ?>
            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>
        <!-- <h2><i class="fa fa-camera"></i>&nbsp;&nbsp; Chat Snap</h2> -->
    </div>
    <div id="search">
        <form id="identifier-input" name="identifier-input" action="view.php" method="get">
            <div class="input-group">
                <input name="identifier" type="text" class="form-control" placeholder="Enter an identifier provided in-game...">
                <span class="input-group-btn">
                    <button class="btn btn-secondary" type="submit" form="identifier-input"><i class="fa fa-search"></i> Search</button>
                </span>
            </div>
        </form>
    </div>

    <?php if (isset($_GET['identifier']) && !$validIdentifier && !empty($identifierError)): ?>
        <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: <?= $identifierError ?></p>
            <br>
        </div>
    <?php else: ?>
        <?php if (!isset($_GET['identifier'])) exit();

        // INITIALIZE

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

        // Calculate age from timestamp
        $dateTime = $snapshot->getTimeGenerated();
        $age = approximateHumanInterval($dateTime->diff(new DateTime('now', $dateTime->getTimezone())));

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

        <div id="content">
            <div>
                <hr>
                <h2 style="font-family: 'Oswald', sans-serif; text-align: center;">
                    Report #<?= $report->getId() ?>
                </h2>
                <hr>
            </div>
            <div class="row">
                <div id="chat" class="col-lg-7">
                    <h4><i class="fa fa-comments"></i>&nbsp;&nbsp;&nbsp;Chat Log</h4>
                    <hr>
                    <div id="log" class="text-muted ">
                        <?php for ($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; ?>
                    </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="<?= $dateTime->format('Y/m/d H:i:s T') ?>"><?= $age . ' old' ?></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($snapshot->getPlayers() as $player): ?>
                        <img src="http://cravatar.eu/avatar/<?= $player->getUUID() ?>/55.png" class="pull-left" />
                        &nbsp;&nbsp;<b class="name"><?= $player->getUsername() ?></b> <span class="label label-staff name"><?= $player->getRank() ?></span><br> <!-- TODO different styling for different ranks -->&nbsp;
                        <code style="font-size: 11px;"><?= $player->getUUID() ?></code>
                        <br><br>
                    <?php endforeach; ?>
                </div>
            </div>
        </div>
    <?php endif; ?>
    <div id="footer">
        <a href="http://www.mineplex.com"><img src="img/logo-full.png" width="225px" /></a>
        <div class="btn-group pull-right indent-link" style="font-family: 'Crete Round', serif; padding-top: 10px;">
            <a href="http://www.mineplex.com" class="btn btn-link btn-small text-muted">Home</a>
            <a href="http://www.mineplex.com/shop/" class="btn btn-link btn-small text-muted">Shop</a>
            <a href="http://www.mineplex.com/forums/" class="btn btn-link btn-small text-muted">Forums</a>
            <a href="http://www.mineplex.com/supporthub/" class="btn btn-link btn-small text-muted">Support</a>
        </div>
    </div>
</div>
</body>
</html>
<?php foreach ($connections as $connection) {
    $connection->close();
} ?>