presseportale/app/Services/PressRelease/FeedFetchReport.php

<?php

namespace App\Services\PressRelease;

use App\Enums\Portal;
use App\Models\Category;
use App\Models\Company;
use App\Models\FeedFetch;
use App\Scopes\PortalScope;
use App\Support\FeedReaderIdentifier;
use Illuminate\Support\Carbon;

/**
 * Admin-Auswertung des Feed-Abruf-Protokolls (Roadmap 3.1): welche Feeds
 * wie oft geholt werden, von welchen Reader-Diensten, und welche
 * Abonnentenzahlen die Dienste selbst melden. Zählt Abrufe — Abonnenten
 * sind eine Angabe des Dienstes (Feedly, Inoreader, NewsBlur, Feedbin
 * nennen sie im User-Agent), keine eigene Zählung.
 */
class FeedFetchReport
{
    /**
     * Je Reader-Dienst: Abrufe und betroffene Feeds im Zeitraum, Summe der
     * je Feed höchsten gemeldeten Abonnentenzahl, letzter Abruf.
     *
     * @return list<array{reader: string|null, label: string, fetches: int, feeds: int, subscribers: int|null, last_at: Carbon}>
     */
    public function byReader(int $days = 30): array
    {
        // Je Reader und Feed eine Zeile (Abrufe, höchste gemeldete Abonnenten,
        // letzter Abruf); die Verdichtung je Reader passiert in PHP — das
        // bleibt auf MySQL und SQLite gleich. Abonnenten: je Feed das Maximum,
        // dann summiert — ein Dienst holt einen Feed viele Male, die Zahl darf
        // nicht mitwachsen. Ein Feed ist Art + Schlüssel + Portal + Sprache,
        // wie in topFeeds() und fetchesFor(): der Portalfeed von presseecho
        // und der von businessportal24 sind zwei Feeds mit zwei Abonnentenzahlen.
        $rows = FeedFetch::query()
            ->where('created_at', '>=', now()->subDays($days))
            ->selectRaw('reader, feed, feed_key, portal, language, count(*) as fetches, max(subscribers) as subscribers, max(created_at) as last_at')
            ->groupBy('reader', 'feed', 'feed_key', 'portal', 'language')
            ->toBase()
            ->get()
            ->groupBy(fn (object $row): string => (string) $row->reader);

        return $rows
            ->map(function ($feeds, string $reader): array {
                $withSubscribers = $feeds->whereNotNull('subscribers');

                return [
                    'reader' => $reader === '' ? null : $reader,
                    'label' => FeedReaderIdentifier::label($reader === '' ? null : $reader),
                    'fetches' => (int) $feeds->sum('fetches'),
                    'feeds' => $feeds->count(),
                    'subscribers' => $withSubscribers->isEmpty() ? null : (int) $withSubscribers->sum('subscribers'),
                    'last_at' => Carbon::parse((string) $feeds->max('last_at')),
                ];
            })
            ->sortByDesc('fetches')
            ->values()
            ->all();
    }

    /**
     * Am häufigsten abgerufene Feeds im Zeitraum, mit aufgelöstem Namen
     * (Branche bzw. Firma) und der höchsten gemeldeten Abonnentenzahl.
     *
     * @return list<array{feed: string, feed_key: string|null, portal: string, language: string, label: string, fetches: int, readers: int, subscribers: int|null, last_at: Carbon}>
     */
    public function topFeeds(int $days = 30, int $limit = 20): array
    {
        // Gruppiert und begrenzt in SQL (Umsetzungsaudit 29.09.2026, OPT-1).
        // Reader ohne Kennung zählen wie bisher als ein eigener Reader.
        $rows = FeedFetch::query()
            ->where('created_at', '>=', now()->subDays($days))
            ->selectRaw("feed, feed_key, portal, language, count(*) as fetches, count(distinct coalesce(reader, '')) as readers, max(subscribers) as subscribers, max(created_at) as last_at")
            ->groupBy('feed', 'feed_key', 'portal', 'language')
            ->orderByDesc('fetches')
            ->orderByDesc('last_at')
            ->limit($limit)
            ->toBase()
            ->get();

        $categoryNames = $this->categoryNames($rows->where('feed', FeedFetch::FEED_CATEGORY)->pluck('feed_key')->filter()->unique()->values()->all());
        $companyNames = $this->companyNames($rows->where('feed', FeedFetch::FEED_NEWSROOM)->pluck('feed_key')->filter()->unique()->values()->all());

        return $rows->map(function (object $row) use ($categoryNames, $companyNames): array {
            $portal = Portal::tryFrom((string) $row->portal)?->label() ?? (string) $row->portal;
            $key = $row->feed_key === null ? null : (string) $row->feed_key;

            $label = match ((string) $row->feed) {
                FeedFetch::FEED_CATEGORY => __('Branche').' · '.($categoryNames[$key.'|'.$row->language] ?? $key),
                FeedFetch::FEED_NEWSROOM => __('Newsroom').' · '.($companyNames[$key] ?? $key),
                default => __('Alle Meldungen'),
            };

            return [
                'feed' => (string) $row->feed,
                'feed_key' => $key,
                'portal' => (string) $row->portal,
                'language' => (string) $row->language,
                'label' => $portal.' · '.strtoupper((string) $row->language).' · '.$label,
                'fetches' => (int) $row->fetches,
                'readers' => (int) $row->readers,
                'subscribers' => $row->subscribers === null ? null : (int) $row->subscribers,
                'last_at' => Carbon::parse((string) $row->last_at),
            ];
        })->all();
    }

    /**
     * Abrufe gesamt und je Feed-Art im Zeitraum.
     *
     * @return array{total: int, portal: int, category: int, newsroom: int, since_total: int}
     */
    public function totals(int $days = 30): array
    {
        $byFeed = FeedFetch::query()
            ->where('created_at', '>=', now()->subDays($days))
            ->selectRaw('feed, count(*) as fetches')
            ->groupBy('feed')
            ->toBase()
            ->pluck('fetches', 'feed');

        return [
            'total' => (int) $byFeed->sum(),
            'portal' => (int) ($byFeed[FeedFetch::FEED_PORTAL] ?? 0),
            'category' => (int) ($byFeed[FeedFetch::FEED_CATEGORY] ?? 0),
            'newsroom' => (int) ($byFeed[FeedFetch::FEED_NEWSROOM] ?? 0),
            'since_total' => FeedFetch::query()->count(),
        ];
    }

    /**
     * Abrufe je Feed für die Absenderansicht einer Meldung (30 Tage):
     * Schlüssel `feed:key:portal:language`.
     *
     * @param  list<array{feed: string, feed_key: string|null, portal: string, language: string}>  $feeds
     * @return array<string, int>
     */
    public function fetchesFor(array $feeds, int $days = 30): array
    {
        if ($feeds === []) {
            return [];
        }

        $key = static fn (string $feed, ?string $feedKey, string $portal, string $language): string => implode(':', [$feed, (string) $feedKey, $portal, $language]);

        // Eine Abfrage für alle Feeds statt einer je Feed (OPT-1).
        $found = FeedFetch::query()
            ->where('created_at', '>=', now()->subDays($days))
            ->where(function ($query) use ($feeds): void {
                foreach ($feeds as $feed) {
                    $query->orWhere(fn ($match) => $match
                        ->where('feed', $feed['feed'])
                        ->when($feed['feed_key'] === null, fn ($q) => $q->whereNull('feed_key'), fn ($q) => $q->where('feed_key', $feed['feed_key']))
                        ->where('portal', $feed['portal'])
                        ->where('language', $feed['language']));
                }
            })
            ->selectRaw('feed, feed_key, portal, language, count(*) as fetches')
            ->groupBy('feed', 'feed_key', 'portal', 'language')
            ->toBase()
            ->get()
            ->mapWithKeys(fn (object $row): array => [
                $key((string) $row->feed, $row->feed_key === null ? null : (string) $row->feed_key, (string) $row->portal, (string) $row->language) => (int) $row->fetches,
            ]);

        $counts = [];

        foreach ($feeds as $feed) {
            $counts[$key($feed['feed'], $feed['feed_key'], $feed['portal'], $feed['language'])] = (int) ($found[$key($feed['feed'], $feed['feed_key'], $feed['portal'], $feed['language'])] ?? 0);
        }

        return $counts;
    }

    /**
     * @param  list<string>  $slugs
     * @return array<string, string> `slug|locale` => Name
     */
    private function categoryNames(array $slugs): array
    {
        if ($slugs === []) {
            return [];
        }

        return Category::query()
            ->join('category_translations', 'category_translations.category_id', '=', 'categories.id')
            ->whereIn('category_translations.slug', $slugs)
            ->toBase()
            ->get(['category_translations.slug', 'category_translations.locale', 'category_translations.name'])
            ->mapWithKeys(fn (object $row): array => [$row->slug.'|'.$row->locale => (string) $row->name])
            ->all();
    }

    /**
     * @param  list<string>  $slugs
     * @return array<string, string>
     */
    private function companyNames(array $slugs): array
    {
        if ($slugs === []) {
            return [];
        }

        // Nur der PortalScope entfällt (Feeds beider Portale im Bericht);
        // entfernte oder gelöschte Firmen bleiben mit ihrem Namen lesbar.
        return Company::query()
            ->withoutGlobalScope(PortalScope::class)
            ->withTrashed()
            ->whereIn('slug', $slugs)
            ->toBase()
            ->pluck('name', 'slug')
            ->map(fn ($name): string => (string) $name)
            ->all();
    }
}