<?php

namespace Ulmus\Query;

use Ulmus\QueryBuilder;

class Join extends Fragment {
    
    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 $field;
    
    public /*string|QueryBuilder*/ $value;
    
    public /* QueryBuilder */ $queryBuilder;

    public function __construct(QueryBuilder $queryBuilder) {
        $this->queryBuilder = $queryBuilder;
    }
    
    public function set(string $side, /* QueryBuilder|string */ $table, string $field, /* QueryBuilder|string */ $value) 
    {
        $this->side = $side;
        $this->table = $table;
        $this->field = $field;
        $this->value = $value;
    }
    
    public function render() : string
    {
        return $this->renderSegments([ $this->side, static::SQL_TOKEN, $this->table, $this->attachment, $this->field, "=", $this->value ]);
    }
}