<?php

/* --------------------------------------------------------------------

  G\ library
  https://g.chevereto.com

  @author	Rodolfo Berrios A. <http://rodolfoberrios.com/>

  Copyright (c) Rodolfo Berrios <inbox@rodolfoberrios.com> All rights reserved.

  Licensed under the MIT license
  http://opensource.org/licenses/MIT

  --------------------------------------------------------------------- */

namespace G;

if (!defined('access') or !access) {
    die('This file cannot be directly accessed.');
}

/*
 * NOTICE
 *
 * Since 1.0.44 you need to define some constants (G_) in your loader file.
 *
 * G_HTTP_HOST
 * G_HTTP_PROTOCOL
 * G_ROOT_URL
 * G_ROOT_LIB_URL
 * G_APP_LIB_URL
 * G_APP_PATH_THEMES
 *
 * ^ These got moved to loader level to support sub-domain wildcards in Chevereto.
 */

define('G_VERSION', '1.0.45');

// Error reporting setup
@ini_set('log_errors', true);
error_reporting(E_ALL ^ E_NOTICE);

@ini_set('session.cookie_httponly', 1);

// Set default locale
setlocale(LC_ALL, 'en_US.UTF8');

// Set encoding to UTF-8
@ini_set('default_charset', 'utf-8');

// Set G\ paths and files
define('G_ROOT_PATH', rtrim(str_replace('\\', '/', dirname(dirname(__DIR__))), '/') . '/');
define('G_ROOT_PATH_RELATIVE', rtrim(dirname($_SERVER['SCRIPT_NAME']), '\/') . '/');
define('G_ROOT_LIB_PATH', G_ROOT_PATH . 'lib/');
define('G_PATH', G_ROOT_LIB_PATH . 'G/');
define('G_PATH_CLASSES', G_PATH . 'classes/');
define('G_FILE_FUNCTIONS', G_PATH . 'functions.php');
define('G_FILE_FUNCTIONS_RENDER', G_PATH . 'functions.render.php');

// Set app paths
define('G_APP_PATH', G_ROOT_PATH . 'app/');
define('G_APP_PATH_LIB', G_APP_PATH . 'lib/');
define('G_APP_PATH_ROUTES', G_APP_PATH . 'routes/');
define('G_APP_PATH_ROUTES_OVERRIDES', G_APP_PATH_ROUTES . 'overrides/');
define('G_APP_PATH_CLASSES', G_APP_PATH_LIB . 'classes/');
define('G_APP_FILE_FUNCTIONS', G_APP_PATH_LIB . 'functions.php');
define('G_APP_FILE_FUNCTIONS_RENDER', G_APP_PATH_LIB . 'functions.render.php');

define('G_APP_SETTINGS_FILE_ERROR', '<br />There are errors in the <strong>%%FILE%%</strong> file. Change the encodig to "UTF-8 without BOM" using Notepad++ or any similar code editor and remove any character before <span style="color: red;">&lt;?php</span>');

// Include the static app config file
(file_exists(G_APP_PATH . 'settings.php')) ? require_once(G_APP_PATH . 'settings.php') : die("G\: Can't find app/settings.php");
if (headers_sent()) {
    die(str_replace('%%FILE%%', 'app/settings.php', G_APP_SETTINGS_FILE_ERROR));
} // Stop on premature headers

// TZ failover
$tz = @date_default_timezone_get();
$dtz = @date_default_timezone_set($tz);
if (!$dtz && !@date_default_timezone_set('America/Santiago')) {
    die(strtr('Invalid timezone identifier: %i. Configure php.ini with a valid timezone identifier %l', ['%i' => $tz, '%l' => 'http://php.net/manual/en/timezones.php']));
}

// Session hack
if ($settings['session.save_path']) {
    session_save_path($settings['session.save_path']);
}

// Is session save path OK? (you won't believe how many people has session issues!)
$session_save_path = @realpath(session_save_path());
if ($session_save_path) { // realpath on this needs pre-webroot directories access
    foreach (['write'] as $k) {
        $fn = 'is_' . $k . 'able';
        if (!$fn($session_save_path)) {
            $session_errors[] = $k;
        }
    }
    if (isset($session_errors)) {
        die(strtr("G\: Sessions are not working on this server due to missing %s permission on session save path (%f session.save_path).", ['%s' => implode('/', $session_errors), '%f' => $settings['session.save_path'] ? 'app/settings.php' : 'php.ini']));
    }
}

// Are sessions working properly?
$_SESSION['G'] = true;
if (!$_SESSION['G']) {
    die("G\: Sessions are not working properly. Check for any conflicting server setting.");
}

// Set the starting execution time
define('G_APP_TIME_EXECUTION_START', microtime(true));

// Include G\ core functions
(file_exists(__DIR__ . '/functions.php')) ? require_once(__DIR__ . '/functions.php') : die("G\: Can't find <strong>" . __DIR__ . '/functions.php' . '</strong>. Make sure that this file exists.');
if (file_exists(__DIR__ . '/functions.render.php')) {
    require_once __DIR__ . '/functions.render.php';
}

if (isset($settings) && $settings['error_reporting'] === false) {
    error_reporting(0);
}

// Set the default timezone
if (isset($settings['default_timezone']) && is_valid_timezone($settings['default_timezone'])) {
    if (!@date_default_timezone_set($settings['default_timezone'])) {
        die(strtr("G\: Can't set %s timezone on line %l", ['%s' => $settings['default_timezone'], '%l' => __LINE__ - 1]));
    }
}

// Set the system environment
if (isset($settings['environment'])) {
    define('G_APP_ENV', $settings['environment']);
}

// Fix some $_SERVER vars
$_SERVER['SCRIPT_FILENAME'] = forward_slash($_SERVER['SCRIPT_FILENAME']);
$_SERVER['SCRIPT_NAME'] = forward_slash($_SERVER['SCRIPT_NAME']);

// Inherit application definitions
if (file_exists(G_APP_PATH . 'app.php')) {
    require_once G_APP_PATH . 'app.php';
}

// Set the DB constants
foreach (['host', 'port', 'name', 'user', 'pass', 'driver', 'pdo_attrs'] as $k) {
    define('G_APP_DB_' . strtoupper($k), isset($settings['db_' . $k]) ? (is_array($settings['db_' . $k]) ? serialize($settings['db_' . $k]) : $settings['db_' . $k]) : null);
}

// Include app functions
(file_exists(G_APP_FILE_FUNCTIONS)) ? require_once(G_APP_FILE_FUNCTIONS) : die("G\: Can't find <strong>" . G_APP_FILE_FUNCTIONS . '</strong>. Make sure that this file exists.');
if (file_exists(G_APP_FILE_FUNCTIONS_RENDER)) {
    require_once G_APP_FILE_FUNCTIONS_RENDER;
}

// NOTE: URLS AND HTTPS MOVED TO app/loader.php to be able to force HTTPS from the app settings