<?php
namespace Aiko\Database;

include __SITE_PATH . '/Aiko/Includes/db.config.php';

use PDO;
use PDOException;


class Connections
{
    private static $instance = null;
    private static $instancePMA = NULL;
    private static $instanceCartal=NULL;
    private static $scada=NULL;

    private function __construct()
    {}

    public static function getInstance(
        $type,
        $host='127.0.0.1',
        $socket= '/var/lib/mysql/mysql.sock',
        $user='root',
        $password='')
    {
        $aHost=array('127.0.0.1','localhost');
        if(in_array($host,$aHost))
        {
            $host = $host;
        }else {
            $host='1.1.1.1';
        }

        $db = $db = 'hcportal_local';
        $socket = $socket;
        $user = $user;
        $pass = $password;
        if($type!=='local'){
            $config = getConfig($type);
            $host = $config['host'];
            $db = $config['db'];
            $socket = $config['socket'];
            $user = $config['user'];
            $pass = $config['password'];
        }


        if (!self::$instance) {
            try
            {
                switch ($config['dbms']) {
                    case 'mysql':
                        // self::$instance = new PDO("mysql:host=$host;dbname=$db;unix_socket=$socket;port=4867;", "$user","$pass");
                        self::$instance = new PDO("mysql:host=$host;dbname=$db;unix_socket=$socket;", "$user", "$pass");
                        break;
                    case 'oracle':
                        self::$instance = new PDO("oci:host=$host;dbname=$db;", "$user", "$pass");
                        break;
                    case 'pgsql':
                        self::$instance = new PDO("pgsql:host=$host;dbname=$db;", "$user", "$pass");
                        break;
                    case 'sqlite':
                        break;
                        self::$instance = new PDO("sqlite:$db;");

                }
                self::$instance->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                self::$instance->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
                // self::$instance->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

                return self::$instance;
            } catch (PDOException $e) {
                self::showerror("Sorry, an error has occured. Please try your request \n" . $e->getMessage());
                die();
            }
        } else {
            return self::$instance;
        }

    }

    public static function getInstancePMA() {
        $config = getConfig('pma');
        $host = $config['host'];
        $db = $config['db'];
        $socket = $config['socket'];
        $user = $config['user'];
        $pass = $config['password'];
    if (!self::$instancePMA)
        {
          try
          {
              self::$instancePMA = new PDO("mysql:host=$host;dbname=$db;unix_socket=$socket;", "$user","$pass");
              self::$instancePMA-> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
              self::$instancePMA->setAttribute(PDO::ATTR_CASE,PDO::CASE_NATURAL);
              return self::$instancePMA;
          }catch (PDOException $e)
            {
              self::showerror("Sorry, an error has occured. Please try your request \n".$e->getMessage());
              die();
            }
        }else
        {
             return self::$instancePMA;
        }

    }

    public static function getInstanceCartal($type) {
        $config = getConfig($type);
        $host = $config['host'];
        $db = $config['db'];
        $socket = $config['socket'];
        $user = $config['user'];
        $pass = $config['password'];
    if (!self::$instanceCartal)
        {
          try
          {
              self::$instanceCartal = new PDO("mysql:host=$host;dbname=$db;unix_socket=$socket;", "$user","$pass");
              self::$instanceCartal-> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
              self::$instanceCartal->setAttribute(PDO::ATTR_CASE,PDO::CASE_NATURAL);
              return self::$instanceCartal;
          }catch (PDOException $e)
            {
              self::showerror("Sorry, an error has occured. Please try your request \n".$e->getMessage());
              die();
            }
        }else
        {
             return self::$instanceCartal;
        }

    }

    public static function getInstanceSCADA($type) {
        $config = getConfig($type);
        $host = $config['host'];
        $db = $config['db'];
        $user = $config['user'];
        $pass = $config['password'];
        $port = $config['port'];
    if (!self::$scada)
        {
          try
          {
            self::$scada = new PDO("pgsql:host=$host;port=$port;dbname=$db;", "$user", "$pass");
              self::$scada-> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
              self::$scada->setAttribute(PDO::ATTR_CASE,PDO::CASE_NATURAL);
              return self::$scada;
          }catch (PDOException $e)
            {
              self::showerror("Sorry, an error has occured. Please try your request \n".$e->getMessage());
              die();
            }
        }else
        {
             return self::$instanceCartal;
        }

    }

    public static function exceptionHandler($e)
    {
        set_exception_handler('exceptionHandler');
        self::showerror("Sorry, the site under maintenance \n");
    }
    public static function showerror($m)
    {
        echo "<h2>Error</h2>";
        echo nl2br(htmlspecialchars($m));
    }
/**
 *
 *
 * Like the constructor, we make __clone private
 * so nobody can clone the instance
 *
 */
    private function __clone()
    {}

}