<?php

namespace Darksparrow\DeegraphPHP\QueryBuilder\QueryBuilders;

use Darksparrow\DeegraphPHP\Attributes\QueryBuilderQuery;
use Darksparrow\DeegraphPHP\Attributes\QueryBuilderRequiredField;
use Darksparrow\DeegraphPHP\Enumerators\DeegraphEqualityOperator;
use Darksparrow\DeegraphPHP\Exceptions\QueryBuilderRequiredFieldIsNotSetException;
use Darksparrow\DeegraphPHP\QueryBuilder\QueryBuilderTrait;

#[QueryBuilderQuery]
final class SelectQuery
{
    use QueryBuilderTrait;

    #[QueryBuilderRequiredField]
    protected array $RelativePaths = [];
    protected string $From = "";
    protected string $Where = "";
    protected string $InstanceOf = "";


    public function __construct()
    {
    }

    /**
     * @throws QueryBuilderRequiredFieldIsNotSetException
     */
    public function __toString(): string
    {
        $builder = "SELECT ";
        if(sizeof($this->RelativePaths)) $builder .= " " . implode(separator: ", ", array: $this->RelativePaths);
        if($this->From != "") $builder .= " FROM $this->From";
        if($this->Where != "") $builder .= " WHERE $this->Where";
        if($this->InstanceOf != "") $builder .= " INSTANCEOF $this->InstanceOf";

        return $builder;
    }

    public function RelativePaths(array $relativePaths): SelectQuery
    {
        $this->RelativePaths = $relativePaths;
        return $this;
    }
    public function From(string $target): SelectQuery
    {
        $this->From = "" . $target;
        return $this;
    }
    public function Where(string $target, DeegraphEqualityOperator $operator, string $value): SelectQuery
    {
        $this->Where = "" . $target . " " . $operator->value . " " . $value;
        return $this;
    }
    public function InstanceOf(string $schema): SelectQuery
    {
        $this->InstanceOf = "" . $schema;
        return $this;
    }
}