<?php

namespace App\Http\Controllers\Web;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Services\ArtworkService;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;
use Illuminate\Database\QueryException;
use Illuminate\Support\Facades\Log;

class HomeController extends Controller
{
    protected ArtworkService $artworks;

    public function __construct(ArtworkService $artworks)
    {
        $this->artworks = $artworks;
    }

    public function index(Request $request)
    {
        $page_title = 'Skinbase - Photography, Skins & Wallpapers';
        $page_meta_description = 'Skinbase legacy home, rendered via Laravel.';
        $page_meta_keywords = 'wallpapers, skins, photography, community';

        $featuredResult = $this->artworks->getFeaturedArtworks(null, 39);
        if ($featuredResult instanceof \Illuminate\Pagination\LengthAwarePaginator) {
            $featured = $featuredResult->getCollection()->first();
        } elseif (is_array($featuredResult)) {
            $featured = $featuredResult[0] ?? null;
        } elseif ($featuredResult instanceof Collection) {
            $featured = $featuredResult->first();
        } else {
            $featured = $featuredResult;
        }

        $memberFeatured = $featured;

        $latestUploads = $this->artworks->getLatestArtworks(20);

        // Forum news (prefer migrated legacy news category id 2876, fallback to slug)
        try {
            $forumNews = DB::table('forum_threads as t1')
                ->leftJoin('users as u', 't1.user_id', '=', 'u.id')
                ->leftJoin('forum_categories as c', 't1.category_id', '=', 'c.id')
                ->selectRaw('t1.id as topic_id, t1.title as topic, COALESCE(u.name, ?) as uname, t1.created_at as post_date, t1.content as preview', ['Unknown'])
                ->whereNull('t1.deleted_at')
                ->where(function ($query) {
                    $query->where('t1.category_id', 2876)
                        ->orWhereIn('c.slug', ['news', 'forum-news']);
                })
                ->orderByDesc('t1.created_at')
                ->limit(8)
                ->get();
        } catch (QueryException $e) {
            Log::warning('Forum threads table missing or DB error when loading forum news', ['exception' => $e->getMessage()]);
            $forumNews = collect();
        }

        // Our news (latest site news)
        try {
            $ourNews = DB::table('news as t1')
                ->join('news_categories as c', 't1.category_id', '=', 'c.category_id')
                ->join('users as u', 't1.user_id', '=', 'u.user_id')
                ->selectRaw('t1.news_id, t1.headline, t1.user_id, t1.picture, t1.preview, u.uname, t1.create_date, t1.views, c.category_name, (SELECT COUNT(*) FROM news_comments WHERE news_id = t1.news_id) AS num_comments')
                ->orderBy('t1.create_date', 'desc')
                ->limit(5)
                ->get();
        } catch (QueryException $e) {
            Log::warning('News table missing or DB error when loading our news', ['exception' => $e->getMessage()]);
            $ourNews = collect();
        }

        // Latest forum activity (exclude forum news category)
        try {
            $latestForumActivity = DB::table('forum_threads as t1')
                ->leftJoin('forum_categories as c', 't1.category_id', '=', 'c.id')
                ->leftJoin('forum_posts as p', function ($join) {
                    $join->on('p.thread_id', '=', 't1.id')
                        ->whereNull('p.deleted_at');
                })
                ->selectRaw('t1.id as topic_id, t1.title as topic, COUNT(p.id) as numPosts')
                ->whereNull('t1.deleted_at')
                ->where(function ($query) {
                    $query->where('t1.category_id', '<>', 2876)
                        ->orWhereNull('t1.category_id');
                })
                ->where(function ($query) {
                    $query->whereNull('c.slug')
                        ->orWhereNotIn('c.slug', ['news', 'forum-news']);
                })
                ->groupBy('t1.id', 't1.title')
                ->orderByDesc('t1.last_post_at')
                ->orderByDesc('t1.created_at')
                ->limit(10)
                ->get();
        } catch (QueryException $e) {
            Log::warning('Forum threads table missing or DB error when loading latest forum activity', ['exception' => $e->getMessage()]);
            $latestForumActivity = collect();
        }

        return view('web.home', compact(
            'page_title',
            'page_meta_description',
            'page_meta_keywords',
            'featured',
            'memberFeatured',
            'latestUploads',
            'forumNews',
            'ourNews',
            'latestForumActivity'
        ));
    }
}