<?php

class User {
    private $db;

    public function __construct($database) {
        $this->db = $database->getConnection();
    }

    // registration
    public function register($username, $password) {
        $hashedPassword = password_hash($password, PASSWORD_DEFAULT);
        $query = $this->db->prepare("INSERT INTO users (username, password) VALUES (:username, :password)");
        $query->bindParam(':username', $username);
        $query->bindParam(':password', $hashedPassword);

        return $query->execute();
    }

    // login
    public function login($username, $password) {
        $query = $this->db->prepare("SELECT * FROM  users WHERE username = :username");
        $query->bindParam(':username', $username);
        $query->execute();

        $user = $query->fetch(PDO::FETCH_ASSOC);
        if ( $user && password_verify($password, $user['password'])) {
            $_SESSION['user_id'] = $user['id'];
            $_SESSION['username'] = $user['username'];
            return true;
        } else {
            return false;
        }
    }

    // get user ID from username
    // FIXME not used now?
    public function getUserId($username) {
        $sql = 'SELECT id FROM users WHERE username = :username';
        $query = $this->db->prepare($sql);
        $query->bindParam(':username', $username);

        $query->execute();

        return $query->fetchAll(PDO::FETCH_ASSOC);

    }

    // get user details
    public function getUserDetails($username) {
        $sql = 'SELECT * FROM users_meta um
                    LEFT JOIN users u
                    ON um.user_id = u.id
                    WHERE u.username = :username';
        $query = $this->db->prepare($sql);
        $query->execute([
            ':username'		=> $username,
        ]);

        return $query->fetchAll(PDO::FETCH_ASSOC);

    }

    // update an existing user
    public function editUser($user_id, $updatedUser) {
        try {
            $sql = 'UPDATE users_meta SET
                        name = :name,
                        email = :email,
                        bio = :bio
                    WHERE user_id = :user_id';
            $query = $this->db->prepare($sql);
            $query->execute([
                ':user_id'	=> $user_id,
                ':name'		=> $updatedUser['name'],
                ':email'	=> $updatedUser['email'],
                ':bio'		=> $updatedUser['bio']
            ]);

            return true;

        } catch (Exception $e) {
            return $e->getMessage();
        }

    }

}

?>