<?php

namespace rednaoeasycalculationforms\pr\QueryBuilder\Filters;

use rednaoeasycalculationforms\pr\QueryBuilder\QueryBuilder;

class FilterGroup
{
    /** @var FilterLineBase[] */
    public $FilterLines;

    /** @var QueryBuilder */
    public $QueryBuilder;
    public $JoinType;
    public function __construct($queryBuilder, $joinType = 'or')
    {
        $this->JoinType = $joinType;
        $this->FilterLines = [];
        $this->QueryBuilder = $queryBuilder;
    }

    /**
     * @param $line FilterLineBase
     */
    public function AddFilterLine($line)
    {
        $this->FilterLines[] = $line;
    }

    public function CreateFilterLine() {
        $filterLine = new FilterLineBase($this);
        $this->AddFilterLine($filterLine);
        return $filterLine;
    }

    /**
     * @param array $addedDependencies
     * @return string
     */
    public function CreateGroupString() {
        $group = '(';

        for($i = 0;$i < count($this->FilterLines);$i++)
        {
            $currentLine = $this->FilterLines[$i];
            if($i > 0)
                $group .= ' and ';

            $comparison = $currentLine->Filter->CreateComparison();
            $dependenciesToAdd = [];
            if($this->QueryBuilder != null)
                foreach($currentLine->Dependencies as $currentDependency)
                {
                    if($currentDependency->NegateExist || !$this->QueryBuilder->HasDependency($currentDependency))
                    {
                        $dependenciesToAdd[] = $currentDependency;
                    }

                }

            if(count($dependenciesToAdd) > 0)
                foreach($dependenciesToAdd as $dependency)
                {
                    $group .= ($dependency->NegateExist ? ' not ' : '') . ' exists(' . $dependency->CreateSubQuery();
                    if($currentLine->Filter != null)
                        $group .= ' and ' . $comparison;

                    $group .= ' )';

                }
            else
                $group .= $comparison;
        }

        $group .= ' ) ';
        return $group;
    }

}