<?php
namespace DatabaseHelper\beans;

use DatabaseHelper\enums\Aggregation;
use DatabaseHelper\enums\Charset;
use DatabaseHelper\enums\Collation;
use DatabaseHelper\enums\Engine;
use http\Exception\InvalidArgumentException;

class Schema
{
    public string $name = '';
    public Primary $id;

    /**
     * @var array<string, Column>
     */
    public array $cols = [];

    /**
     * @var array<string, Reference>
     */
    public array $refs = [];

    public Engine $engine = Engine::INNODB;
    public Charset $charset = Charset::UTF8;
    public Collation $collation = Collation::UTF8_GENERAL_CI;

    public function existsCol(string $name): bool {
        return isset($this->cols[$name]);
    }

    public function reqCol(string $name): void {
        if (!$this->existsCol($name))
            throw new InvalidArgumentException("Column $name does not exist in schema $this->name.");
    }

    public function getCol(string $name): Column {
        return $this->cols[$name];
    }

    public function existsRef(Schema $other): bool {
        $otherId = $other->id;
        // TODO
        return true;
    }

    public function reqRef(Schema $other): void {
        if (!$this->existsRef($other))
            throw new InvalidArgumentException("A reference to $other->name is not defined in  $this->name.");
    }
}