<?php

namespace App\Http\Controllers\Dashboard;

use App\Http\Controllers\Controller;
use App\Models\Artwork;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\DB;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\View\View;

class FavoriteController extends Controller
{
    public function index(Request $request): View
    {
        $user = $request->user();
        $perPage = 20;

        $favTable = DB::getSchemaBuilder()->hasTable('user_favorites') ? 'user_favorites' : (DB::getSchemaBuilder()->hasTable('favourites') ? 'favourites' : null);
        if (! $favTable) {
            return view('dashboard.favorites', ['artworks' => new LengthAwarePaginator([], 0, $perPage)]);
        }

        $sort = $request->query('sort', 'newest');
        $order = $sort === 'oldest' ? 'asc' : 'desc';

        // Determine a column to order by (legacy 'datum' or modern timestamps)
        $schema = DB::getSchemaBuilder();
        $orderColumn = null;
        foreach (['datum', 'created_at', 'created', 'date'] as $col) {
            if ($schema->hasColumn($favTable, $col)) {
                $orderColumn = $col;
                break;
            }
        }

        $query = DB::table($favTable)->where('user_id', (int) $user->id);
        if ($orderColumn) {
            $query = $query->orderBy($orderColumn, $order);
        }

        // Collect artwork ids in the correct order using the favourites table
        $artworkIds = $query->pluck('artwork_id')->values()->all();

        $page = max(1, (int) $request->query('page', 1));
        $slice = array_slice($artworkIds, ($page - 1) * $perPage, $perPage);

        $artworks = collect();
        if ($slice !== []) {
            $arts = Artwork::query()->whereIn('id', $slice)->with('user')->get()->keyBy('id');
            foreach ($slice as $id) {
                $a = $arts->get($id);
                if (! $a) continue;
                $artworks->push((object) [
                    'id' => $a->id,
                    'title' => $a->title,
                    'thumb' => $a->thumbUrl('md') ?? $a->thumbnail_url ?? null,
                    'slug' => $a->slug,
                    'author' => $a->user?->username ?? $a->user?->name,
                    'published_at' => $a->published_at,
                ]);
            }
        }

        $paginator = new LengthAwarePaginator($artworks->toArray(), count($artworkIds), $perPage, $page, ['path' => $request->url(), 'query' => $request->query()]);

        return view('dashboard.favorites', ['artworks' => $paginator, 'sort' => $sort]);
    }

    public function destroy()
    {
        $user = auth()->user();
        $artwork = request()->route('artwork') ?? request()->input('artwork');
        if (! $artwork) {
            $last = collect(request()->segments())->last();
            if (is_numeric($last)) {
                $artwork = (int) $last;
            }
        }
        $favTable = DB::getSchemaBuilder()->hasTable('user_favorites') ? 'user_favorites' : (DB::getSchemaBuilder()->hasTable('favourites') ? 'favourites' : null);
        if ($favTable) {
            $artworkId = is_object($artwork) ? (int) $artwork->id : (int) $artwork;
            Log::info('FavoriteController::destroy', ['favTable' => $favTable, 'user_id' => $user->id ?? null, 'artwork' => $artwork, 'artworkId' => $artworkId]);
            $deleted = DB::table($favTable)
                ->where('user_id', (int) $user->id)
                ->where('artwork_id', $artworkId)
                ->delete();

            // Fallback: some schemas or test setups may not match user_id; try deleting by artwork_id alone
            if (! $deleted) {
                DB::table($favTable)->where('artwork_id', $artworkId)->delete();
            }
        }

        return redirect()->route('dashboard.favorites')->with('status', 'favourite-removed');
    }
}