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<?php


function install_post(&$a) {

	global $db;

	$dbhost = notags(trim($_POST['dbhost']));
	$dbuser = notags(trim($_POST['dbuser']));
	$dbpass = notags(trim($_POST['dbpass']));
	$dbdata = notags(trim($_POST['dbdata']));
	$timezone = notags(trim($_POST['timezone']));
	$phpath = notags(trim($_POST['phpath']));

	require_once("dba.php");

	$db = new dba($dbhost, $dbuser, $dbpass, $dbdata, $true);

	if(mysqli_connect_errno()) {
		notice( t('Could not connect to database.') . EOL);
		return;
	}
	else
		notice( t('Connected to database.') . EOL);

	$tpl = load_view_file('view/htconfig.tpl');
	$txt = replace_macros($tpl,array(
		'$dbhost' => $dbhost,
		'$dbuser' => $dbuser,
		'$dbpass' => $dbpass,
		'$dbdata' => $dbdata,
		'$timezone' => $timezone,
		'$phpath' => $phpath
	));
	$result = file_put_contents('.htconfig.php', $txt);
	if(! $result) {
		$a->data = $txt;
	}

	$errors = load_database($db);
	if(! $errors) {
		// Our sessions normally are stored in the database. But as we have only managed 
		// to get it bootstrapped milliseconds ago, we have to apply a bit of trickery so 
		// that you'll see the following important notice (which is stored in the session). 

		session_write_close();

		require_once('session.php');
		session_start();
		session_regenerate_id();

		$_SESSION['sysmsg'] = '';

		notice( t('Database import succeeded.') . EOL 
			. t('IMPORTANT: You will need to [manually] setup a scheduled task for the poller.') . EOL 
			. t('Please see the file INSTALL.') . EOL );
		goaway($a->get_baseurl() . '/register' );
	}
	else {
		$db = null; // start fresh
		notice( t('Database import failed.') . EOL
			. t('You may need to import the file "database.sql" manually using phpmyadmin or mysql.') . EOL
			. t('Please see the file INSTALL.') . EOL );
	}
}


function install_content(&$a) {

	notice( t('Welcome to Friendika.') . EOL);

	$o .= check_htconfig();
	if(strlen($o))
		return $o;

	if(strlen($a->data)) {
		$o .= manual_config($a);
		return;
	}

	$o .= check_php($phpath);

	require_once('datetime.php');

	$tpl = load_view_file('view/install_db.tpl');
	$o .= replace_macros($tpl, array(
		'$tzselect' => ((x($_POST,'timezone')) ? select_timezone($_POST['timezone']) : select_timezone()),
		'$submit' => t('Submit'),
		'$dbhost' => ((x($_POST,'dbhost')) ? notags(trim($_POST['dbhost'])) : 'localhost'),
		'$dbuser' => notags(trim($_POST['dbuser'])),
		'$dbpass' => notags(trim($_POST['dbpass'])),
		'$dbdata' => notags(trim($_POST['dbdata'])),
		'$phpath' => $phpath
	));

	return $o;
}

function check_php(&$phpath) {
	$o = '';
	$phpath = trim(shell_exec('which php'));
	if(! strlen($phpath)) {
		$o .= t('Could not find a command line version of PHP in the web server PATH.');
		$o .= t('This is required. Please adjust the configuration file .htconfig.php accordingly.');
	}
	return $o;
}

function check_htconfig() {

	if(((file_exists('.htconfig.php')) && (! is_writable('.htconfig.php')))
		|| (! is_writable('.'))) {

		$o = t('The web installer needs to be able to create a file called ".htconfig.php" in the top folder of your web server and it is unable to do so.');
		$o .= t('This is most often a permission setting, as the web server may not be able to write files in your folder - even if you can.');
		$o .= t('Please check with your site documentation or support people to see if this situation can be corrected.');
		$o .= t('If not, you may be required to perform a manual installation. Please see the file "INSTALL" for instructions.'); 
	}

	return $o;
}

	
function manual_config(&$a) {
	$data = htmlentities($a->data);
	$o = t('The database configuration file ".htconfig.php" could not be written. Please use the enclosed text to create a configuration file in your web server root.');
	$o .= "<textarea rows=\"24\" cols=\"80\" >$data</textarea>";
	return $o;
}


function load_database($db) {

	$str = file_get_contents('database.sql');
	$arr = explode(';',$str);
	$errors = 0;
	foreach($arr as $a) {
		if(strlen(trim($a))) {	
			$r = @$db->q(trim($a));
			if(! $r) {
				notice( t('Errors encountered creating database tables.') . $a . EOL);
				$errors ++;
			}
		}
        }
	return $errors;
}