<?php

define('AES_256_CBC', 'aes-256-cbc');

if(! function_exists("simple_encrypt")) {

    function simple_encrypt($text, $salt) {

        $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length(AES_256_CBC));
        return trim(openssl_encrypt($text, AES_256_CBC, $salt, 0, $iv).":".base64_encode($iv));

    }

}

if(! function_exists("simple_decrypt")) {

    function simple_decrypt($text, $salt) {

        $parts = explode(':', $text);
        return openssl_decrypt($parts[0], AES_256_CBC, $salt, 0, base64_decode($parts[1]));

    }

}

if(! function_exists("adaptMemoryLimitToFileSize")) {

    function adaptMemoryLimitToFileSize(String $path, String $limit = "4G") {

        if (file_exists($path)) {

            $size = filesize($path);
            if ($size > 500 * 1024 * 1024) { $limit = "-1";}

            $actual_memory = ini_get("memory_limit");
            if ($actual_memory != "-1" && $actual_memory != "4G" && $size > 2000000 ) {

                ini_set("memory_limit", $limit);
                ini_set("max_execution_time", "600");

            }

        }

    }

}

if(! function_exists("setup_db_connection")) {

    function setup_db_connection(int $tenant = null)
    {
        if(! defined("_MYSQL_DT")) {
            define("_MYSQL_DT", "Y-m-d H:i:s");
        }

        try {

            \Illuminate\Support\Facades\DB::connection('mysql')->getPdo();

        } catch (\Throwable $th) {

            get_config_variables();

            config([
                "database.connections.mysql.host"     => config("json.db_host", null),
                "database.connections.mysql.database" => config("json.db_name", null),
                "database.connections.mysql.username" => config("json.db_root_user", null),
                "database.connections.mysql.password" => config("json.db_root_pass", null)
            ]);

            \Illuminate\Support\Facades\DB::purge('mysql');

        }

        if(! empty($tenant) && is_numeric($tenant)) {

            try {

                \Illuminate\Support\Facades\DB::connection('mysql-tenant')->getPdo();
                if(config('json.prefix_db') . "_ente{$tenant}" !== config("database.connections.mysql-tenant.database")) {
                    throw new \Exception("We must change db connection");
                }

            } catch (\Throwable $th) {

                get_config_variables();

                config([
                    "database.connections.mysql-tenant.host"     => config("json.db_host", null),
                    "database.connections.mysql-tenant.database" => config('json.prefix_db') . "_ente{$tenant}",
                    "database.connections.mysql-tenant.username" => config("json.db_root_user", null),
                    "database.connections.mysql-tenant.password" => config("json.db_root_pass", null),
                ]);

                \Illuminate\Support\Facades\DB::purge('mysql-tenant');

            }

        }

    }

}

if(! function_exists("get_config_variables")) {

    function get_config_variables()
    {
        $path = \dirname(base_path());
        if (\file_exists("{$path}/config.json")) {

            $config = \file_get_contents("{$path}/config.json");
            if(is_json($config)) {

                $config = json_decode($config, true);
                config(["json" => $config]);

            }

        }
    }

}


if(! function_exists("get_json_configuration_info")) {

    function get_json_configuration_info(String $filename)
    {
        $filename = str_replace('.json', '', $filename);

        $path = \dirname(base_path());
        $path = "{$path}/json/{$filename}.json";
        if (\file_exists($path)) {

            $info = \file_get_contents($path);
            if(is_json($info)) {

                $info = json_decode($info, true);
                config(["info.{$filename}" => $info]);

            }

        }
    }

}

if(! function_exists("is_json")) {

    function is_json($string)
    {
        json_decode($string);
        return json_last_error() === JSON_ERROR_NONE;
    }

}

if(! function_exists("restore_database_dump")) {

    function restore_database_dump($host, $username, $password, $database, $dump_path, $command="zcat") {
        exec("{$command} {$dump_path} | mysql -u {$username} -p{$password} -h {$host} {$database} 2>&1", $output);
        if(! empty($output) ) {
            foreach($output as $line) {
                $line = strtolower($line);
                if(!str_contains($line, "[warning]") && !str_contains($line, "[warn]")) {
                    throw new \Illuminate\Database\QueryException("Error while restoring dump {$dump_path}", [], new Exception(json_encode($output), 1));
                }
            }
        }
    }

}