<?php
declare(strict_types=1);

namespace Esun\PromotionPopup\Model;

use Esun\PromotionPopup\Model\Config\Source\Audience;
use Esun\PromotionPopup\Model\Config\Source\Frequency;
use Esun\PromotionPopup\Model\Config\Source\PromotionType;
use Magento\Cms\Api\GetBlockByIdentifierInterface;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\Exception\NoSuchEntityException;
use Magento\Framework\Stdlib\DateTime\TimezoneInterface;
use Magento\Store\Model\ScopeInterface;
use Magento\Store\Model\StoreManagerInterface;

class Config
{
    private const XML_PATH_PREFIX = 'esun_promotion_popup/general/';

    public function __construct(
        private readonly ScopeConfigInterface $scopeConfig,
        private readonly StoreManagerInterface $storeManager,
        private readonly TimezoneInterface $timezone,
        private readonly RequestInterface $request,
        private readonly GetBlockByIdentifierInterface $blockByIdentifier
    ) {
    }

    public function canDisplay(): bool
    {
        if (!$this->isCampaignActive()) {
            return false;
        }

        return !in_array($this->request->getFullActionName(), $this->getExcludedHandles(), true);
    }

    public function isCampaignActive(): bool
    {
        $identifier = $this->getCmsBlockIdentifier();
        $store = $this->storeManager->getStore();
        if (!$this->isEnabled()
            || $identifier === ''
            || !$this->timezone->isScopeDateInInterval(
                $store,
                $this->getValue('start_date') ?: null,
                $this->getValue('end_date') ?: null
            )
        ) {
            return false;
        }

        try {
            return $this->blockByIdentifier->execute($identifier, (int)$store->getId())->isActive();
        } catch (NoSuchEntityException) {
            return false;
        }
    }

    public function isRegistrationNewsletterCouponPromotion(): bool
    {
        return $this->getValue('promotion_type') === PromotionType::REGISTRATION_NEWSLETTER_COUPON;
    }

    public function isEnabled(): bool
    {
        return $this->scopeConfig->isSetFlag(
            self::XML_PATH_PREFIX . 'enabled',
            ScopeInterface::SCOPE_STORE
        );
    }

    public function getCmsBlockIdentifier(): string
    {
        return trim($this->getValue('cms_block_identifier'));
    }

    public function getWebsiteId(): int
    {
        return (int)$this->storeManager->getStore()->getWebsiteId();
    }

    public function getDisplayDelay(): int
    {
        return min(60000, max(0, (int)$this->getValue('display_delay')));
    }

    public function getFrequency(): string
    {
        $frequency = $this->getValue('frequency');
        $allowed = [Frequency::ALWAYS, Frequency::SESSION, Frequency::DAILY, Frequency::CAMPAIGN];

        return in_array($frequency, $allowed, true) ? $frequency : Frequency::DAILY;
    }

    public function getAudience(): string
    {
        return $this->getValue('audience') === Audience::ALL ? Audience::ALL : Audience::GUEST;
    }

    public function getCampaignVersion(): int
    {
        return max(1, (int)$this->getValue('campaign_version'));
    }

    /** @return string[] */
    private function getExcludedHandles(): array
    {
        return array_values(array_unique(array_filter(array_map(
            static fn(string $handle): string => trim($handle),
            preg_split('/[\r\n,]+/', $this->getValue('excluded_handles')) ?: []
        ))));
    }

    private function getValue(string $field): string
    {
        return (string)$this->scopeConfig->getValue(
            self::XML_PATH_PREFIX . $field,
            ScopeInterface::SCOPE_STORE
        );
    }
}