<?php
define('FM_HIT', 0x01000000);
define('FM_ERR', 0x02000000);

define('FM_NAV', [
    ['title' => 'Home',     'link' => '/'],
    //['title' => 'Blog',     'link' => '//blog.flash.moe'],
    ['title' => 'Blog',     'link' => '//flash.moe/2020/?blog=1'],
    ['title' => 'Projects', 'link' => '/projects'],
    ['title' => 'Contact',  'link' => '/contact'],
    ['title' => 'Related',  'link' => '/related'],
    ['title' => 'Etcetera', 'link' => '/etc'],
    ['title' => 'Forum',    'link' => '//forum.flash.moe'],
]);

define('FM_BGS', [
    '/assets/headers/krk-000.jpg', '/assets/headers/krk-001.jpg', '/assets/headers/krk-002.jpg',
    '/assets/headers/krk-003.jpg', '/assets/headers/krk-004.jpg', '/assets/headers/krk-005.jpg',
    '/assets/headers/krk-006.jpg', '/assets/headers/krk-007.jpg', '/assets/headers/krk-008.jpg',

    '/assets/headers/mkt-000.jpg', '/assets/headers/mkt-001.jpg', '/assets/headers/mkt-002.jpg',
    '/assets/headers/mkt-003.jpg', '/assets/headers/mkt-004.jpg', '/assets/headers/mkt-005.jpg',
    '/assets/headers/mkt-006.jpg', '/assets/headers/mkt-007.jpg', '/assets/headers/mkt-008.jpg',
    '/assets/headers/mkt-009.jpg', '/assets/headers/mkt-010.jpg', '/assets/headers/mkt-011.jpg',
    '/assets/headers/mkt-012.jpg', '/assets/headers/mkt-013.jpg', '/assets/headers/mkt-014.jpg',
    '/assets/headers/mkt-015.jpg', '/assets/headers/mkt-016.jpg', '/assets/headers/mkt-017.jpg',
    '/assets/headers/mkt-018.jpg', '/assets/headers/mkt-019.jpg', '/assets/headers/mkt-020.jpg',
    '/assets/headers/mkt-021.jpg', '/assets/headers/mkt-022.jpg', '/assets/headers/mkt-023.jpg',
    '/assets/headers/mkt-024.jpg', '/assets/headers/mkt-025.jpg', '/assets/headers/mkt-026.jpg',
    '/assets/headers/mkt-027.jpg', '/assets/headers/mkt-028.jpg', '/assets/headers/mkt-029.jpg',
    '/assets/headers/mkt-030.jpg', '/assets/headers/mkt-031.jpg', '/assets/headers/mkt-032.jpg',
    '/assets/headers/mkt-033.jpg', '/assets/headers/mkt-034.jpg', '/assets/headers/mkt-035.jpg',
    '/assets/headers/mkt-036.jpg', '/assets/headers/mkt-037.jpg', '/assets/headers/mkt-038.jpg',
    '/assets/headers/mkt-039.jpg', '/assets/headers/mkt-040.jpg', '/assets/headers/mkt-041.jpg',
    '/assets/headers/mkt-042.jpg', '/assets/headers/mkt-043.jpg', '/assets/headers/mkt-044.jpg',
    '/assets/headers/mkt-045.jpg', '/assets/headers/mkt-046.jpg', '/assets/headers/mkt-047.jpg',
    '/assets/headers/mkt-048.jpg', '/assets/headers/mkt-049.jpg', '/assets/headers/mkt-050.jpg',
    '/assets/headers/mkt-051.jpg', '/assets/headers/mkt-052.jpg', '/assets/headers/mkt-053.jpg',
    '/assets/headers/mkt-054.jpg', '/assets/headers/mkt-055.jpg', '/assets/headers/mkt-056.jpg',
    '/assets/headers/mkt-057.jpg', '/assets/headers/mkt-058.jpg', '/assets/headers/mkt-059.jpg',
    '/assets/headers/mkt-060.jpg', '/assets/headers/mkt-061.jpg', '/assets/headers/mkt-062.jpg',
    '/assets/headers/mkt-063.jpg',
]);

define('FM_FEET', [
    'if it ain\'t broke, i\'ll break it',
]);

define('FM_ERRS' , [
    403 => [
        'code'  => 403,
        'title' => 'Access Denied',
        'image' => '/assets/errors/403.jpg',
        'desc'  => 'You are not supposed to be here.',
    ],
    404 => [
        'code'  => 404,
        'title' => 'Not Found',
        'image' => '/assets/errors/404.jpg',
        'desc'  => 'Whatever you\'re looking for is no longer here, or might not have been here in the first place.',
    ],
    405 => [
        'code'  => 405,
        'title' => 'Method Not Supported',
        'image' => '/assets/errors/405.jpg',
        'desc'  => 'You\'re up to something, aren\'t you?',
    ],
]);

function fm_component(string $_component_name, array $vars = []) {
    extract($vars);
    require __DIR__ . '/../components/' . $_component_name . '.php';
}

function first_paragraph(string $text, string $delimiter = "\n"): string {
    $index = mb_strpos($text, $delimiter);
    return $index === false ? $text : mb_substr($text, 0, $index);
}

function time_elapsed(int $since, bool $full = false): string {
    $now = new DateTime;
    $since = new DateTime(date('c', $since));
    $diff = $now->diff($since);

    $diff->w = floor($diff->d / 7);
    $diff->d -= $diff->w * 7;

    $string = [
        'y' => 'year',
        'm' => 'month',
        'w' => 'week',
        'd' => 'day',
        'h' => 'hour',
        'i' => 'minute',
        's' => 'second',
    ];

    foreach($string as $key => &$value) {
        if($diff->{$key})
            $value = $diff->{$key} . ' ' . $value . ($diff->{$key} > 1 ? 's' : '');
        else
            unset($string[$key]);
    }

    if(!$full)
        $string = array_slice($string, 0, 1);
    return $string ? implode(', ', $string) . ' ago' : 'just now';
}

function cache_output(string $name, int $lifetime, callable $callable) {
    $path = sys_get_temp_dir() . '/fm-' . $name . '.cache';
    if(!is_file($path) || (filemtime($path) + $lifetime) < time())
        file_put_contents($path, serialize($callable()));
    return unserialize(file_get_contents($path));
}

set_include_path(realpath(__DIR__ . '/../lib/') . PATH_SEPARATOR . get_include_path());
spl_autoload_extensions('.php');
spl_autoload_register();

ob_start();

$reqMethod =                      filter_input(INPUT_SERVER, 'REQUEST_METHOD', FILTER_SANITIZE_STRING);
$reqPath   = '/' . trim(parse_url(filter_input(INPUT_SERVER, 'REQUEST_URI',    FILTER_SANITIZE_STRING), PHP_URL_PATH), '/');
$reqHead   = false;

if($reqMethod == 'HEAD') {
    $reqMethod = 'GET';
    $reqHead = true;
}

if(substr($reqPath, 0, 7) === '/error/') {
    $statusCode = intval(substr($reqPath, 7, 3));
} else {
    foreach(glob(__DIR__ . '/../pages/*.php') as $page) {
        $result = include_once $page;
        $statusCode = $result & 0xFFF;
        if(($result & FM_HIT) === FM_HIT) {
            if($statusCode >= 100 && $statusCode <= 999)
                http_response_code($statusCode);
            return;
        }
        if(($result & FM_ERR) === FM_ERR)
            break;
    }
}

$errorInfo = FM_ERRS[$statusCode ?? 404] ?? FM_ERRS[404];
http_response_code($errorInfo['code']);

if(!$reqHead) {
    fm_component('header', ['title' => $errorInfo['title']]);
?>
            <div class="http-error">
                <h2 class="http-error-head"><?=$errorInfo['title'];?></h2>
                <img src="<?=$errorInfo['image'];?>" alt="<?=$errorInfo['image'];?>" class="http-error-image"/>
                <div class="http-error-desc"><?=$errorInfo['desc'];?></div>
            </div>
<?php
    fm_component('footer');
}