<?php

namespace KupShop\KupShopBundle\Context;

use KupShop\I18nBundle\Entity\Currency;

class CurrencyContext implements ContextInterface
{
    /** @var string */
    protected $activeId;

    /** @var Currency[] */
    protected $supported;

    protected $defaultId;

    /**
     * @var []Currency
     */
    protected $currencies;

    public function __construct()
    {
    }

    public function remember(string $id)
    {
    }

    public function activate(string $id)
    {
        $this->activeId = $id;

        return true;
    }

    /**
     * @return Currency
     */
    public function getActive()
    {
        $active = $this->getActiveId();
        if (!$this->validate($active)) {
            $active = key($this->getSupported());
        }

        return $this->getSupported()[$active] ?? $this->getAll()[$active];
    }

    /**
     * @return Currency[]
     */
    public function getSupported()
    {
        if (!$this->supported) {
            $this->supported = $this->loadSupported();
        }

        return $this->supported;
    }

    /**
     * @return Currency
     */
    public function getDefault()
    {
        return $this->getSupported()[$this->getDefaultId()];
    }

    /**
     * @return string
     */
    public function getDefaultId()
    {
        if (!isset($this->defaultId)) {
            $dbcfg = \Settings::getDefault();
            $this->defaultId = $dbcfg->currency_code ?? 'CZK';
        }

        return $this->defaultId;
    }

    public function getOrDefault(?string $currency): Currency
    {
        return $this->getAll()[$currency] ?? $this->getDefault();
    }

    /**
     * @return bool
     */
    protected function validate($id)
    {
        if (isAdministration()) {
            return array_key_exists($id, $this->getAll());
        }

        return array_key_exists($id, $this->getSupported());
    }

    /**
     * @return Currency[]
     */
    protected function loadSupported()
    {
        return $this->getAll();
    }

    public function getAll()
    {
        if (!$this->currencies) {
            $dbcfg = \Settings::getDefault();

            $currency = (new Currency())
                ->setId($dbcfg->currency_code)
                ->setName('Česká koruna')
                ->setSymbol($dbcfg->currency)
                ->setPriceRound($dbcfg->price_round)
                ->setPriceRoundOrder($dbcfg->price_round_order)
                ->setPriceRoundDirection($dbcfg->price_round_direction)
                ->setPricePrecision($dbcfg->price_precision)
                ->setPriceDecimalMark($dbcfg->price_decimal_mark)
                ->setRate(\DecimalConstants::one());

            $this->currencies = [$this->getDefaultId() => $currency];
        }

        return $this->currencies;
    }

    protected function loadActive()
    {
        return $this->getDefaultId();
    }

    public function getActiveId(): string
    {
        if (is_null($this->activeId)) {
            $this->activeId = $this->loadActive();
        }

        return $this->activeId;
    }

    public function clearCache(): void
    {
        $this->activeId = null;
    }

    public function isValid(string $id): bool
    {
        return $this->validate($id);
    }

    public function getSourceRounding(mixed $source, array &$params)
    {
        if ($source instanceof \Product && is_null($params['bata']) && $source->isVirtual()) {
            $params['bata'] = false;
        }
    }
}