<?php

namespace SparkPlug\Com\Noccy\Pdo;

use Spark\Resource\ResourceType;
use PDO;
use SparkPlug\Com\Noccy\Pdo\Reflection\Reflector\MysqlReflector;
use SparkPlug\Com\Noccy\Pdo\Reflection\Reflector\ReflectorInterface;
use SparkPlug\Com\Noccy\Pdo\Reflection\Reflector\SqliteReflector;

class PdoResource extends ResourceType
{
    private PDO|null $pdo = null;

    private array $options;

    public function __construct(array $options)
    {
        $this->options = $options;
    }

    private function createFromURI(string $uri)
    {
        $uris = parse_url($uri);
        $username = $uris['user']??null;
        $password = $uris['pass']??null;
        
        switch ($uris['scheme']??null) {
            case 'mysql':
                $database = ltrim($uris['path']??null, '/');
                $dsn = sprintf("mysql:host=%s;port=%d;dbname=%s", $uris['host']??'127.0.0.1', $uris['port']??3306, $database);
                break;
            case 'sqlite':
                $database = $uris['path']??':memory:';
                $dsn = sprintf("sqlite:%s", $database);
                break;
            default:
                fprintf(STDERR, "error: Unable to create PDO resource from URI, invalid type %s\n", $uris['scheme']??null);
                return;
        }

        $this->pdo = new \PDO($dsn, $username, $password);
    }

    public function getPDO(): ?PDO
    {
        if (!$this->pdo) {
            $this->createFromURI($this->options['uri']);
        }
        return $this->pdo;
    }

    public function getReflector(): ?ReflectorInterface
    {
        $uri = $this->options['uri'];
        
        if (!preg_match('|^(.+?):|', $uri, $m)) {
            fprintf(STDERR, "error: Bad resource URI\n");
            return null;
        }
        switch ($m[1]) {
            case 'mysql':
                return new MysqlReflector($this);
            case 'sqlite':
                return new SqliteReflector($this);
        }

    }

    public function info()
    {
        return $this->options['uri'];
    }

    public function createTable(string $name, array $columns, bool $ifNotExists=false)
    {

    }
}