<?php

class ChannelService
{
    public function synchronizeChannels(array $cachedChannels, Config $config): void
    {
        // Alt-Methode bleibt absichtlich harmlos.
        // Neue Sender werden jetzt vom SenderSyncService im XmlTvCacheService ergänzt.
    }

    public function saveChannelsFromPost(Config $config, array $post): void
    {
        $savedChannels = $config->getChannels();

        foreach ($savedChannels as $id => &$channel) {
            $channel['enabled'] = isset($post['enabled'][$id]);
            $channel['favorite'] = isset($post['favorite'][$id]);
            $channel['number'] = (int)($post['number'][$id] ?? $channel['number'] ?? 999999);
            $channel['group'] = trim($post['group'][$id] ?? $channel['group'] ?? 'Unknown');
        }

        unset($channel);

        $config->saveChannels($this->sortChannels($savedChannels));

        @unlink('/var/www/cache/guide.json');
        @unlink('/var/www/cache/guide.version');
    }

    public function getSortedChannels(Config $config): array
    {
        return $this->sortChannels($config->getChannels());
    }

    private function sortChannels(array $channels): array
    {
        uasort($channels, function ($a, $b) {
            return [
                (int)($a['number'] ?? 999999),
                strtolower($a['name'] ?? '')
            ] <=> [
                (int)($b['number'] ?? 999999),
                strtolower($b['name'] ?? '')
            ];
        });

        return $channels;
    }
}