<?php

###
# @name			Check Plugin
# @author		Tobias Reich
# @copyright	2015 by Tobias Reich
# @description	This file takes a look at your Lychee-configuration and displays all errors it can find.
###

namespace Diagnostics;

use Mysqli;
use Lychee\Modules\Settings;

$lychee = __DIR__ . '/../../';

require($lychee . 'php/define.php');
require($lychee . 'php/autoload.php');

require($lychee . 'php/helpers/hasPermissions.php');

# Start the session
session_start();

# Set content
header('content-type: text/plain');

# Declare
$error = '';

# Show separator
echo('Diagnostics' . PHP_EOL);
echo('-----------' . PHP_EOL);

# PHP Version
if (floatval(phpversion())<5.5)		$error .= ('Error: Upgrade to PHP 5.5 or higher' . PHP_EOL);

# Extensions
if (!extension_loaded('session'))	$error .= ('Error: PHP session extension not activated' . PHP_EOL);
if (!extension_loaded('exif'))		$error .= ('Error: PHP exif extension not activated' . PHP_EOL);
if (!extension_loaded('mbstring'))	$error .= ('Error: PHP mbstring extension not activated' . PHP_EOL);
if (!extension_loaded('gd'))		$error .= ('Error: PHP gd extension not activated' . PHP_EOL);
if (!extension_loaded('mysqli'))	$error .= ('Error: PHP mysqli extension not activated' . PHP_EOL);
if (!extension_loaded('json'))		$error .= ('Error: PHP json extension not activated' . PHP_EOL);
if (!extension_loaded('zip'))		$error .= ('Error: PHP zip extension not activated' . PHP_EOL);

# Permissions
if (hasPermissions(LYCHEE_UPLOADS_BIG)===false)			$error .= ('Error: \'uploads/big\' is missing or has insufficient read/write privileges' . PHP_EOL);
if (hasPermissions(LYCHEE_UPLOADS_MEDIUM)===false)		$error .= ('Error: \'uploads/medium\' is missing or has insufficient read/write privileges' . PHP_EOL);
if (hasPermissions(LYCHEE_UPLOADS_THUMB)===false)		$error .= ('Error: \'uploads/thumb\' is missing or has insufficient read/write privileges' . PHP_EOL);
if (hasPermissions(LYCHEE_UPLOADS_IMPORT)===false)		$error .= ('Error: \'uploads/import\' is missing or has insufficient read/write privileges' . PHP_EOL);
if (hasPermissions(LYCHEE_UPLOADS)===false)				$error .= ('Error: \'uploads/\' is missing or has insufficient read/write privileges' . PHP_EOL);
if (hasPermissions(LYCHEE_DATA)===false)				$error .= ('Error: \'data/\' is missing or has insufficient read/write privileges' . PHP_EOL);

# About GD
$gdVersion = gd_info();
if (!$gdVersion['JPEG Support'])											$error .= ('Error: PHP gd extension without jpeg support' . PHP_EOL);
if (!$gdVersion['PNG Support'])												$error .= ('Error: PHP gd extension without png support' . PHP_EOL);
if (!$gdVersion['GIF Read Support'] || !$gdVersion['GIF Create Support'])	$error .= ('Error: PHP gd extension without full gif support' . PHP_EOL);

# Load config
if (!file_exists(LYCHEE_CONFIG_FILE))	exit('Error: Configuration not found. Please install Lychee for additional tests');
else									require(LYCHEE_CONFIG_FILE);

# Database
$database = new Mysqli($dbHost, $dbUser, $dbPassword, $dbName);
if (mysqli_connect_errno()!=0) $error .= ('Error: ' . mysqli_connect_errno() . ': ' . mysqli_connect_error() . '' . PHP_EOL);

# Config
if (!isset($dbName)||$dbName==='')	$error .= ('Error: No property for $dbName in config.php' . PHP_EOL);
if (!isset($dbUser)||$dbUser==='')	$error .= ('Error: No property for $dbUser in config.php' . PHP_EOL);
if (!isset($dbPassword))			$error .= ('Error: No property for $dbPassword in config.php' . PHP_EOL);
if (!isset($dbHost)||$dbHost==='')	$error .= ('Error: No property for $dbHost in config.php' . PHP_EOL);

# Load settings
$settings = Settings::get();

# Settings
if (!isset($settings['username'])||$settings['username']=='')				$error .= ('Error: Username empty or not set in database' . PHP_EOL);
if (!isset($settings['password'])||$settings['password']=='')				$error .= ('Error: Password empty or not set in database' . PHP_EOL);
if (!isset($settings['thumbQuality'])||$settings['thumbQuality']=='')		$error .= ('Error: No or wrong property for thumbQuality in database' . PHP_EOL);
if (!isset($settings['sortingPhotos'])||$settings['sortingPhotos']=='')		$error .= ('Error: Wrong property for sortingPhotos in database' . PHP_EOL);
if (!isset($settings['sortingAlbums'])||$settings['sortingAlbums']=='')		$error .= ('Error: Wrong property for sortingAlbums in database' . PHP_EOL);
if (!isset($settings['plugins']))											$error .= ('Error: No property for plugins in database' . PHP_EOL);
if (!isset($settings['imagick'])||$settings['imagick']=='')					$error .= ('Error: No or wrong property for imagick in database' . PHP_EOL);
if (!isset($settings['identifier'])||$settings['identifier']=='')			$error .= ('Error: No or wrong property for identifier in database' . PHP_EOL);
if (!isset($settings['skipDuplicates'])||$settings['skipDuplicates']=='')	$error .= ('Error: No or wrong property for skipDuplicates in database' . PHP_EOL);
if (!isset($settings['checkForUpdates'])||($settings['checkForUpdates']!='0'&&$settings['checkForUpdates']!='1')) $error .= ('Error: No or wrong property for checkForUpdates in database' . PHP_EOL);

# Check dropboxKey
if (!$settings['dropboxKey']) echo('Warning: Dropbox import not working. No property for dropboxKey' . PHP_EOL);

# Check php.ini Settings
if (ini_get('max_execution_time')<200&&ini_set('upload_max_filesize', '20M')===false) echo('Warning: You may experience problems when uploading a large amount of photos. Take a look in the FAQ for details.' . PHP_EOL);
if (!ini_get('allow_url_fopen')) echo('Warning: You may experience problems with the Dropbox- and URL-Import. Edit your php.ini and set allow_url_fopen to 1.' . PHP_EOL);

# Check mysql version
if ($database->server_version<50500) echo('Warning: Lychee uses the GBK charset to avoid sql injections on your MySQL version. Please update to MySQL 5.5 or higher to enable UTF-8 support.' . PHP_EOL);

# Output
if ($error==='')	echo('No critical problems found. Lychee should work without problems!' . PHP_EOL);
else				echo $error;

# Show separator
echo(PHP_EOL . PHP_EOL . 'System Information' . PHP_EOL);
echo('------------------' . PHP_EOL);

# Ensure that user is logged in
if ((isset($_SESSION['login'])&&$_SESSION['login']===true)&&
	(isset($_SESSION['identifier'])&&$_SESSION['identifier']===$settings['identifier'])) {

	# Load json
	$json = file_get_contents(LYCHEE_SRC . 'package.json');
	$json = json_decode($json, true);

	# About imagick
	$imagick = extension_loaded('imagick');
	if ($imagick===true)	$imagickVersion = @Imagick::getVersion();
	else					$imagick = '-';
	if (!isset($imagickVersion, $imagickVersion['versionNumber'])||$imagickVersion==='')	$imagickVersion = '-';
	else																					$imagickVersion = $imagickVersion['versionNumber'];

	# Output system information
	echo('Lychee Version:  ' . $json['version'] . PHP_EOL);
	echo('DB Version:      ' . $settings['version'] . PHP_EOL);
	echo('System:          ' . PHP_OS . PHP_EOL);
	echo('PHP Version:     ' . floatval(phpversion()) . PHP_EOL);
	echo('MySQL Version:   ' . $database->server_version . PHP_EOL);
	echo('Imagick:         ' . $imagick . PHP_EOL);
	echo('Imagick Active:  ' . $settings['imagick'] . PHP_EOL);
	echo('Imagick Version: ' . $imagickVersion . PHP_EOL);
	echo('GD Version:      ' . $gdVersion['GD Version'] . PHP_EOL);
	echo('Plugins:         ' . implode($settings['plugins'], ', ') . PHP_EOL);

} else {

	# Don't go further if the user is not logged in
	echo('You have to be logged in to see more information.');
	exit();

}

?>