<?php

require __DIR__ . '/../vendor/autoload.php';


use Dotenv\Dotenv;

class Database
{
    private $host;
    private $user;
    private $password;
    private $dbname;

    private $dbh; // Database handler
    private $stmt; // Statement handler
    private $error;

    public function __construct()
    {
        // Load environment variables
        $dotenv = Dotenv::createImmutable(__DIR__ . '/../');
        $dotenv->load();

        // Set database credentials from environment variables
        $this->host = $_ENV['DB_HOST'];
        $this->user = $_ENV['DB_USER'];
        $this->password = $_ENV['DB_PASSWORD'];
        $this->dbname = $_ENV['DB_NAME'];

        // Set DSN (Data Source Name)
        $dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
        $options = array(
            PDO::ATTR_PERSISTENT => true,
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
        );

        // Create a new PDO instance
        try {
            $this->dbh = new PDO($dsn, $this->user, $this->password, $options);
            //echo 'Connected';
        } catch (PDOException $e) {
            $this->error = $e->getMessage();
            echo $this->error;
        }
    }

    // Prepare statement with query
    public function query($sql)
    {
        $this->stmt = $this->dbh->prepare($sql);
    }

    // Bind values
    public function bind($param, $value, $type = null)
    {
        if (is_null($type)) {
            switch (true) {
                case is_int($value):
                    $type = PDO::PARAM_INT;
                    break;
                case is_bool($value):
                    $type = PDO::PARAM_BOOL;
                    break;
                case is_null($value):
                    $type = PDO::PARAM_NULL;
                    break;
                default:
                    $type = PDO::PARAM_STR;
            }
        }
        $this->stmt->bindValue($param, $value, $type);
    }

    // Execute the prepared statement
    public function execute()
    {
        return $this->stmt->execute();
    }

    // Get result set as array of objects
    public function resultSet()
    {
        $this->execute();
        return $this->stmt->fetchAll(PDO::FETCH_OBJ);
    }

    // Get single record as object
    public function single()
    {
        $this->execute();
        return $this->stmt->fetch(PDO::FETCH_OBJ);
    }

    // Get record row count
    public function rowCount()
    {
        return $this->stmt->rowCount();
    }

    public function beginTransaction()
    {
        return $this->dbh->beginTransaction();
    }

    public function commit()
    {
        return $this->dbh->commit();
    }

    public function rollBack()
    {
        return $this->dbh->rollBack();
    }

    public function endTransaction()
    {
        return $this->dbh->commit();
    }

    public function cancelTransaction()
    {
        return $this->dbh->rollBack();
    }

    public function getPdo()
    {
        return $this->dbh;
    }

    public function lastInsertId()
    {
        return $this->dbh->lastInsertId();
    }

    public function getConn()
    {
        return $this->dbh;
    }
}

?>