<?php
include dirname(__FILE__).'/config.php';
include(CLIENT_APP_PATH.'../core/lib/adodb512/adodb.inc.php');

$isConfigFileExists = file_exists(CLIENT_APP_PATH."config.php");
$configData = file_get_contents(CLIENT_APP_PATH."config.php");

error_log("isConfigFileExists $isConfigFileExists");
error_log("configData $configData");

$ret = array();

if(!$isConfigFileExists || $configData != ""){
	$ret["status"] = "ERROR";
	$ret["msg"] = "You are trying to install IceHrm on an existing installation.";
	echo json_encode($ret);
	exit();
}

$action = $_REQUEST['action'];

if($action == "TEST_DB"){

	$db = NewADOConnection('mysqli');
	$res = $db->Connect($_REQUEST["APP_HOST"], $_REQUEST["APP_USERNAME"], $_REQUEST["APP_PASSWORD"], $_REQUEST["APP_DB"]);

	if (!$res){
		error_log('Could not connect: ' . $db->ErrorMsg());
		$ret["status"] = "ERROR";
		$ret["msg"] = "Incorrect credentials or incorrect DB host :".$db->ErrorMsg();
		echo json_encode($ret);
		exit();
	}

	$result = $db->Execute("Show tables");
	error_log(print_r("Number of tables:".$result->RecordCount(),true));
	$num_rows = $result->RecordCount();
	if($num_rows != 0){
		$ret["status"] = "ERROR";
		$ret["msg"] = "Database is not empty";
		echo json_encode($ret);
		exit();
	}

	$ret["status"] = "SUCCESS";
	$ret["msg"] = "Successfully connected to the database";
	echo json_encode($ret);

}else if($action == "INS"){

	$config = file_get_contents(CLIENT_APP_PATH."config.sample.php");

	if(empty($config)){
		error_log('Sample config file is empty');
		$ret["status"] = "ERROR";
		$ret["msg"] = "Sample config file not found";
		echo json_encode($ret);
		exit();
	}

	$config = str_replace("_LOG_", $_REQUEST['LOG'], $config);
	$config = str_replace("_APP_BASE_PATH_", APP_PATH, $config);
	$config = str_replace("_CLIENT_BASE_PATH_", CLIENT_APP_PATH, $config);
	$config = str_replace("_BASE_URL_", $_REQUEST['BASE_URL'], $config);
	$config = str_replace("_CLIENTBASE_URL_", $_REQUEST['BASE_URL']."app/", $config);
	$config = str_replace("_APP_DB_", $_REQUEST['APP_DB'], $config);
	$config = str_replace("_APP_USERNAME_", $_REQUEST['APP_USERNAME'], $config);
	$config = str_replace("_APP_PASSWORD_", $_REQUEST['APP_PASSWORD'], $config);
	$config = str_replace("_APP_HOST_", $_REQUEST['APP_HOST'], $config);
	$config = str_replace("_CLIENT_", 'app', $config);


	$db = NewADOConnection('mysqli');
	$res = $db->Connect($_REQUEST["APP_HOST"], $_REQUEST["APP_USERNAME"], $_REQUEST["APP_PASSWORD"], $_REQUEST["APP_DB"]);


	if (!$res){
		error_log('Could not connect: ' . $db->ErrorMsg());
		$ret["status"] = "ERROR";
		$ret["msg"] = "Incorrect credentials or incorrect DB host. ".'Could not connect: ' . $db->ErrorMsg();
		echo json_encode($ret);
		exit();
	}

	$result = $db->Execute("Show tables");
	error_log(print_r("Number of tables:".$result->RecordCount(),true));
	$num_rows = $result->RecordCount();
	if($num_rows != 0){
		$ret["status"] = "ERROR";
		$ret["msg"] = "Database is not empty";
		echo json_encode($ret);
		exit();
	}


	//Run create table script
	$insql = file_get_contents(CLIENT_APP_PATH."../core/scripts/".APP_ID."db.sql");
	$sql_list = preg_split('/;/',$insql);
	foreach($sql_list as $sql){
		if (preg_match('/^\s+$/', $sql) || $sql == '') { # skip empty lines
			continue;
		}
		$db->Execute($sql);
	}

	//Run create table script
	$insql = file_get_contents(CLIENT_APP_PATH."../core/scripts/".APP_ID."_master_data.sql");
	$sql_list = preg_split('/;/',$insql);
	foreach($sql_list as $sql){
		if (preg_match('/^\s+$/', $sql) || $sql == '') { # skip empty lines
			continue;
		}
		$db->Execute($sql);
	}


	//Write config file

	$file = fopen(CLIENT_APP_PATH."config.php","w");
	if($file){
		fwrite($file,$config);
		fclose($file);
	}else{
		error_log('Unable to write configurations to file');
		$ret["status"] = "ERROR";
		$ret["msg"] = "Unable to write configurations to file";
		echo json_encode($ret);
		exit();
	}

	$ret["status"] = "SUCCESS";
	$ret["msg"] = "Successfully installed. Please rename or delete install folder";
	echo json_encode($ret);
}