<?php

function generate_password($length = 12)
{
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()";
    $password = '';

    for($i = 0; $i < $length; $i++)
    {
        $password .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }

    return $password;
}

function fetch_env_var($envvar)
{
    $res = getenv($envvar);

    if($res === false)
    {
        return null;
    }

    return $res;
}

function get_psa_modify_hash($params)
{
    $scheme = fetch_env_var("BASE_URL_SCHEME");
    $host = fetch_env_var("BASE_URL_HOST");
    $port = fetch_env_var("BASE_URL_PORT");
    $path = fetch_env_var("BASE_URL_PATH");

    $full = $scheme."://".$host.(($port !== null && strlen($port) > 0) ? ":$port" : "").($path[0] == "/" ? "" : "/").$path;

    $parameters = array();
    $parameters["@@"."BASE_URL_SCHEME"."@@"] = $scheme;

    if($scheme == 'http')
    {
        $parameters["@@"."SSL_ENABLED"."@@"] = 0;
        $parameters["@@"."SSL_ENABLED_YN"."@@"] = 'n';
    }
    else
    {
        if($scheme == 'https')
        {
            $parameters["@@"."SSL_ENABLED"."@@"] = 1;
            $parameters["@@"."SSL_ENABLED_YN"."@@"] = 'y';
        }
    }

    $parameters["@@"."BASE_URL_HOST"."@@"] = $host;
    $parameters["@@"."BASE_URL_PORT"."@@"] = $port;

    $my_url_path = $path;
    $my_urlwls_path = $path;

    if($my_url_path == "/")
    {
        $my_url_path = "";
        $my_urlwls_path = $my_url_path;
    }
    else
    {
        if($my_url_path[strlen($my_url_path) - 1] == "/")
        {
            $my_url_path = substr($my_url_path, 0, strlen($my_url_path) - 1);
            $my_urlwls_path = "/".$my_url_path;
        }
    }
    $parameters["@@"."BASE_URL_PATH"."@@"] = $my_url_path;
    $parameters["@@"."INSTALL_PREFIX_WLS"."@@"] = $my_urlwls_path;

    $my_root_url = $full;

    if($my_root_url[strlen($my_root_url) - 1] == "/")
    {
        $my_root_url = substr($my_root_url, 0, strlen($my_root_url) - 1);
    }

    $parameters["@@"."ROOT_URL"."@@"] = $my_root_url;

    $my_web_dir = fetch_env_var("WEB___DIR");

    while($my_web_dir[strlen($my_web_dir) - 1] == "/")
    {
        $my_web_dir = substr($my_web_dir, 0, strlen($my_web_dir) - 1);
    }

    $parameters["@@"."ROOT_DIR"."@@"] = $my_web_dir;
    $parameters["@@"."SER_ROOT_DIR"."@@"] = serialize($my_web_dir);
    $parameters["@@"."SER_TEMP_DIR"."@@"] = serialize($my_web_dir.DIRECTORY_SEPARATOR.'tmp');
    $parameters['@@VAR_BASE_URL_HOST@@'] = serialize($parameters['@@BASE_URL_HOST@@']);

    return $parameters;
}

function get_db_type($db_id)
{
    return fetch_env_var("DB_${db_id}_TYPE");
}

function get_db_name($db_id)
{
    return fetch_env_var("DB_${db_id}_NAME");
}

function get_db_login($db_id)
{
    return fetch_env_var("DB_${db_id}_LOGIN");
}

function get_db_password($db_id)
{
    return fetch_env_var("DB_${db_id}_PASSWORD");
}

function get_db_prefix($db_id)
{
    if(fetch_env_var("DB_${db_id}_PREFIX") !== null)
    {
        return fetch_env_var("DB_${db_id}_PREFIX");
    }
    else
    {
        return '';
    }
}

function get_db_address($db_id)
{
    $db_address = fetch_env_var("DB_${db_id}_HOST");

    if(fetch_env_var("DB_${db_id}_PORT") !== null)
    {
        $db_address .= ':'.fetch_env_var("DB_${db_id}_PORT");
    }

    return $db_address;
}

function get_db_modify_hash($db_ids)
{
    $parameters = array();

    foreach($db_ids as $db_id)
    {
        $parameters["@@"."DB_".strtoupper($db_id)."_TYPE"."@@"] = get_db_type($db_id);
        $parameters["@@"."DB_".strtoupper($db_id)."_NAME"."@@"] = get_db_name($db_id);
        $parameters["@@"."DB_".strtoupper($db_id)."_LOGIN"."@@"] = get_db_login($db_id);
        $parameters["@@"."DB_".strtoupper($db_id)."_PASSWORD"."@@"] = get_db_password($db_id);
        $parameters["@@"."DB_".strtoupper($db_id)."_HOST"."@@"] = fetch_env_var("DB_${db_id}_HOST");
        $parameters["@@"."DB_".strtoupper($db_id)."_VERSION"."@@"] = fetch_env_var("DB_${db_id}_VERSION");
        $parameters["@@"."DB_".strtoupper($db_id)."_PORT"."@@"] = fetch_env_var("DB_${db_id}_PORT");
        $parameters["@@"."DB_".strtoupper($db_id)."_PREFIX"."@@"] = get_db_prefix($db_id);
        $parameters["@@"."DB_".strtoupper($db_id)."_ADDRESS"."@@"] = get_db_address($db_id);
    }

    return $parameters;
}

function get_web_dir($web_id)
{
    $web_id_parameter = str_replace("/", "_", $web_id);

    return fetch_env_var("WEB_${web_id_parameter}_DIR");
}

function get_web_modify_hash($web_ids)
{
    $parameters = array();

    foreach($web_ids as $web_id)
    {
        $web_id_parameter = str_replace("/", "_", $web_id);
        $parameters["@@".strtoupper($web_id)."_DIR"."@@"] = fetch_env_var("WEB_${web_id_parameter}_DIR");
    }

    return $parameters;
}

function get_settings_modify_hash($params)
{
    $parameters = array();

    foreach($params as $param)
    {
        $parameters["@@".strtoupper($param)."@@"] = fetch_env_var("SETTINGS_${param}");
        $parameters['@@VAR_'.strtoupper($param)."@@"] = serialize($parameters["@@".strtoupper($param)."@@"]);
    }

    $parameters['@@VAR_INSTALLED_TIME@@'] = serialize(time());

    return $parameters;
}

function get_settings_enum_modify_hash($enum_params)
{
    $parameters = array();

    foreach($enum_params as $param_id => $elements_ids_map)
    {
        $param_value = fetch_env_var("SETTINGS_${param_id}");

        foreach($elements_ids_map as $element_id => $value_for_app)
        {
            if($element_id == $param_value)
            {
                $parameters["@@".strtoupper($param_id)."@@"] = $value_for_app;
            }
        }
    }

    return $parameters;
}

function get_crypt_settings_modify_hash($crypt_params)
{
    $parameters = array();

    foreach($crypt_params as $param)
    {
        $fname = "${param}_crypt";
        $parameters["@@".strtoupper($param)."@@"] = $fname(fetch_env_var("SETTINGS_${param}"));
    }

    return $parameters;
}

function is_linux()
{
    $pwd = getcwd();

    if(preg_match("/:/", $pwd))
    {
        return 0;
    }

    return 1;
}