<?php

namespace Lc\ShopBundle\Services ;

use Lc\ShopBundle\Context\OrderProductInterface;
use Lc\ShopBundle\Context\ProductFamilyInterface;
use Lc\ShopBundle\Context\ProductInterface;
use Lc\ShopBundle\Context\ProductPropertyInterface;
use Lc\ShopBundle\Context\ReductionCatalogInterface;

class PriceUtils
{

        public function getPrice($entity)
        {
                if($entity instanceof ProductPropertyInterface) {
                        if($entity->getBehaviorPriceInherited() == 'by-piece') {
                                return $entity->getPriceInherited() ;
                        }
                        elseif($entity->getBehaviorPriceInherited() == 'by-reference-unit') {
                                if($entity->getQuantityInherited() > 0) {
                                        return $entity->getPriceByRefUnitInherited() * $entity->getQuantityInherited() ;
                                }
                        }
                }

                if($entity instanceof OrderProductInterface) {
                        return $entity->getPrice() ;
                }

                return null ;
        }

        public function getPriceWithTax($entity)
        {
                return $this->applyTax(
                        $this->getPrice($entity),
                        $entity->getTaxRateInherited()->getValue()
                ) ;
        }

        public function getPriceWithTaxAndReduction($entity)
        {
                return $this->getPriceWithTaxAndReductionCatalog(
                        $entity,
                        $this->getPrice($entity),
                        $this->getPriceWithTax($entity)
                );
        }

        public function getPriceByRefUnit($entity)
        {
                if($entity instanceof ProductPropertyInterface) {
                        if($entity->getBehaviorPriceInherited() == 'by-piece') {
                                return ($this->getPriceInherited($entity) * $entity->getUnitInherited()->getCoefficient()) / $entity->getQuantityInherited() ;
                        }
                        elseif($entity->getBehaviorPriceInherited() == 'by-reference-unit') {
                                return $entity->getPriceByRefUnitInherited() ;
                        }
                }

                if($entity instanceof OrderProductInterface) {
                        return ($this->getPrice($entity) * $entity->getUnitInherited()->getCoefficient()) / $entity->getQuantityProduct() ;
                }

                return null ;
        }

        public function getPriceByRefUnitWithTax($entity)
        {
                return $this->applyTax(
                        $this->getPriceByRefUnit($entity),
                        $entity->getTaxRateInherited()->getValue()
                ) ;
        }

        public function getPriceByRefUnitWithTaxAndReduction($entity)
        {
                return $this->getPriceWithTaxAndReductionCatalog(
                        $entity,
                        $this->getPriceByRefUnit($entity),
                        $this->getPriceByRefUnitWithTax($entity)
                );
        }

        public function getTotal($entity)
        {
                if($entity instanceof OrderProductInterface) {
                        return $entity->getQuantityOrder() * $this->getPrice($entity) ;
                }
                return null ;
        }

        public function getTotalWithTax($entity)
        {
                if($entity instanceof OrderProductInterface) {
                        return $this->applyTax(
                                $this->getTotal($entity),
                                $entity->getTaxRateInherited()->getValue()
                        ) ;
                }
                return null ;
        }

        public function getTotalWithTaxAndReduction($entity)
        {
                if($entity instanceof OrderProductInterface) {
                        return $this->getPriceWithTaxAndReductionCatalog(
                                $entity,
                                $this->getTotal($entity),
                                $this->getTotalWithTax($entity)
                        ) ;
                }
        }

        private function getPriceWithTaxAndReductionCatalog($entity, $price, $priceWithTax): ?float
        {
                if($entity instanceof ProductPropertyInterface) {
                        $reductionCatalog = $entity->getReductionCatalogInherited() ;

                        if($reductionCatalog) {
                                $reductionCatalogValue = $reductionCatalog->getValue() ;
                                $reductionCatalogUnit = $reductionCatalog->getUnit() ;
                                $reductionCatalogBehaviorTaxRate = $reductionCatalog->getBehaviorTaxRate() ;
                        }
                }

                if($entity instanceof OrderProductInterface) {
                        // OrderProductReductionCatalog
                        $reductionCatalog = null ;
                }

                if(isset($reductionCatalogValue) && isset($reductionCatalogUnit) && isset($reductionCatalogBehaviorTaxRate)) {
                        if ($reductionCatalogUnit == 'percent') {
                                return $this->applyReductionPercent(
                                        $priceWithTax,
                                        $reductionCatalogValue
                                );
                        }
                        elseif ($reductionCatalogUnit == 'amount') {
                                if($reductionCatalogBehaviorTaxRate == 'tax-excluded') {
                                        return $this->applyTax(
                                                $this->applyReductionAmount(
                                                        $price,
                                                        $reductionCatalogValue
                                                ),
                                                $this->getTaxRateInherited()->getValue()
                                        );
                                }
                                elseif($reductionCatalogBehaviorTaxRate == 'tax-included') {
                                        return $this->applyReductionAmount(
                                                $priceWithTax,
                                                $reductionCatalogValue
                                        );
                                }
                        }
                }

                return $priceWithTax ;
        }


        public function applyTax($price, $taxRateValue)
        {
                return $this->round($this->applyPercent($price, $taxRateValue)) ;
        }

        public function applyReductionPercent($price, $percentage)
        {
                return $this->applyPercent($price, -$percentage) ;
        }

        public function applyReductionAmount($price, $amount)
        {
                return $price - $amount ;
        }

        public function applyPercent($price, $percentage)
        {
                return $price * ($percentage / 100 + 1) ;
        }

        public function round($price)
        {
                return round((($price * 100)) / 100, 2);
        }

}