<?php
namespace Core;

use App\Config;

class Model
{
    protected static $dsn;

    protected static function connectDB()
    {
        static $conn = null;
        
        try {
            if (!$conn) {
                $dsn = 'mysql:host='.Config::DB_HOST.';dbname='.Config::DB_DB;
                $conn = new \PDO($dsn, Config::DB_UNAME, Config::DB_PWD);

                $conn->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
            }
            return $conn;
        } catch (PDOException $e) {
            echo $e->getMessage();
        }
    }

    public function createTable()
    {
        $sql = "CREATE TABLE IF NOT EXISTS pengumuman (
        	id			int(3)			NOT NULL	AUTO_INCREMENT,
        	category	int(3)        	NOT NULL,
        	created_at	timestamp		NOT NULL	DEFAULT	CURRENT_TIMESTAMP,
            expire_at   timestamp       NOT NULL,
            creator     int(3)          NOT NULL,
            edited_at   timestamp,
            editor      int(3),
            content     varchar(255)    NOT NULL,

        	PRIMARY KEY (id)
        ) ENGINE=InnoDB	DEFAULT CHARSET=utf8;";

        $db = static::connectDB();
        $query = $db->prepare($sql);

        if ($query->execute()) {
            return true;
        }
        return false;
    }

    public function dropTable()
    {
        $sql = "DROP TABLE IF EXISTS pengumuman";

        $db = static::connectDB();
        $query = $db->prepare($sql);

        if ($query->execute()) {
            return true;
        }
        return false;
    }
}