<?php

namespace Ulmus\Query;

use Ulmus\MysqlQueryBuilder;
use Ulmus\Repository\ConditionTrait;

class Join extends Fragment
{
    use ConditionTrait;

    const SQL_OUTER = "OUTER";
    const SQL_TOKEN = "JOIN";

    const TYPE_LEFT = "LEFT";
    const TYPE_RIGHT = "RIGHT";
    const TYPE_INNER = "INNER";
    const TYPE_FULL = "FULL";
    const TYPE_CROSS = "CROSS";
    const TYPE_NATURAL = "NATURAL";

    public bool $outer = false;

    public array $joins = [];

    public string $attachment = "ON";

    public string $side;

    public /*string|QueryBuilder*/ $table;

    public ? string $alias;

    public string $field;

    public /*string|QueryBuilder*/ $value;

    public /* QueryBuilder */ $queryBuilder;

    public int $order = 40;

    public const ORDER_VALUE = 0;

    public int $joinOrder = 0;

    public function __construct(QueryBuilderInterface $queryBuilder)
    {
        $cls = get_class($queryBuilder);
        $this->queryBuilder = new $cls();
        $this->queryBuilder->parent = $queryBuilder;
    }

    public function set(string $side, /* QueryBuilder|string */ $table, string $field, /* QueryBuilder|string */ $value)
    {
        $this->side = $side;
        $this->table = $table;

        $this->where($this->field = $field, $this->value = $value);
    }

    public function order() : float
    {
        return $this->order + ( $this->joinOrder / 100 );
    }

    public function render() : string
    {
        return $this->renderSegments([
            strtoupper($this->side), $this->outer ? static::SQL_OUTER : "", static::SQL_TOKEN, $this->table, $this->alias ?? "", $this->attachment, $this->queryBuilder->render(true) ?? ""
        ]);
    }
}