<?php

namespace App\Twig\Components;

use App\Repository\ArticleRepository;
use Psr\Log\LoggerInterface;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\UX\LiveComponent\Attribute\AsLiveComponent;
use Symfony\UX\LiveComponent\Attribute\LiveAction;
use Symfony\UX\LiveComponent\Attribute\LiveProp;
use Symfony\UX\LiveComponent\DefaultActionTrait;
use Symfony\Contracts\Cache\CacheInterface;

#[AsLiveComponent]
final class SearchComponent
{
    use DefaultActionTrait;

    #[LiveProp(writable: true, useSerializerForHydration: true)]
    public string $query = '';
    public array $results = [];

    public bool $interactive = true;

    #[LiveProp]
    public int $vol = 0;

    #[LiveProp(writable: true)]
    public int $page = 1;

    #[LiveProp]
    public int $resultsPerPage = 12;

    private const string SESSION_KEY = 'last_search_results';
    private const string SESSION_QUERY_KEY = 'last_search_query';

    public function __construct(
        private readonly ArticleRepository $articleRepository,
        private readonly TokenStorageInterface $tokenStorage,
        private readonly LoggerInterface $logger,
        private readonly CacheInterface $cache,
        private readonly RequestStack $requestStack
    )
    {
    }

    public function mount(): void
    {
        // Restore search results from session if available and no query provided
        if (empty($this->query)) {
            $session = $this->requestStack->getSession();
            if ($session->has(self::SESSION_QUERY_KEY)) {
                $this->query = $session->get(self::SESSION_QUERY_KEY);
                $this->results = $session->get(self::SESSION_KEY, []);
                $this->logger->info('Restored search results from session for query: ' . $this->query);
            }
        }
    }

    #[LiveAction]
    public function search(): void
    {
        $this->logger->info("Query: {$this->query}");

        if (empty($this->query)) {
            $this->results = [];
            $this->clearSearchCache();
            return;
        }

        // Check if the same query exists in session
        $session = $this->requestStack->getSession();
        if ($session->has(self::SESSION_QUERY_KEY) &&
            $session->get(self::SESSION_QUERY_KEY) === $this->query) {
            $this->results = $session->get(self::SESSION_KEY, []);
            $this->logger->info('Using cached search results for query: ' . $this->query);
            return;
        }

        try {
            $this->results = [];

            // Use database-based search instead of Elasticsearch
            $offset = ($this->page - 1) * $this->resultsPerPage;
            $results = $this->articleRepository->searchArticles(
                $this->query,
                $this->resultsPerPage,
                $offset
            );

            $this->logger->info('Search results count: ' . count($results));
            $this->logger->info('Search results: ',  ['results' => $results]);

            $this->results = $results;

            // Cache the search results in session
            $this->saveSearchToSession($this->query, $this->results);

        } catch (\Exception $e) {
            $this->logger->error('Search error: ' . $e->getMessage());
            $this->results = [];
        }
    }

    /**
     * Save search results to session
     */
    private function saveSearchToSession(string $query, array $results): void
    {
        $session = $this->requestStack->getSession();
        $session->set(self::SESSION_QUERY_KEY, $query);
        $session->set(self::SESSION_KEY, $results);
        $this->logger->info('Saved search results to session for query: ' . $query);
    }

    /**
     * Clear search cache from session
     */
    private function clearSearchCache(): void
    {
        $session = $this->requestStack->getSession();
        $session->remove(self::SESSION_QUERY_KEY);
        $session->remove(self::SESSION_KEY);
        $this->logger->info('Cleared search cache from session');
    }
}