<?php

namespace App\Http\Controllers;

use App\Models\Article;
use App\Models\ForumThread;
use App\Models\GlossaryTerm;
use App\Models\Product;
use Illuminate\Http\Request;

class SearchController extends Controller
{
    /**
     * 全站搜索：跨 文章 / 产品 / 术语库 / 技术论坛 检索。
     * 各数据源遵循其前台可见性作用域（游客仅看已审内容）。
     */
    public function index(Request $request)
    {
        $q = trim((string) $request->query('q', ''));
        $user = $request->user();

        $results = [
            'articles' => collect(),
            'products' => collect(),
            'glossary' => collect(),
            'threads'  => collect(),
        ];
        $total = 0;

        if ($q !== '') {
            $like = '%' . $q . '%';

            $results['articles'] = Article::visiblePublic()
                ->where(function ($query) use ($like) {
                    $query->where('title', 'like', $like)
                          ->orWhere('summary', 'like', $like)
                          ->orWhere('body', 'like', $like);
                })
                ->orderByDesc('published_at')
                ->limit(10)
                ->get();

            $results['products'] = Product::published()
                ->where(function ($query) use ($like) {
                    $query->where('name', 'like', $like)
                          ->orWhere('summary', 'like', $like)
                          ->orWhere('description', 'like', $like)
                          ->orWhere('model', 'like', $like);
                })
                ->limit(10)
                ->get();

            $results['glossary'] = GlossaryTerm::query()
                ->where(function ($query) use ($like) {
                    $query->where('term', 'like', $like)
                          ->orWhere('definition', 'like', $like)
                          ->orWhere('aliases', 'like', $like);
                })
                ->orderBy('term')
                ->limit(10)
                ->get();

            $results['threads'] = ForumThread::visible($user)
                ->where(function ($query) use ($like) {
                    $query->where('title', 'like', $like)
                          ->orWhere('body', 'like', $like);
                })
                ->orderByDesc('last_reply_at')
                ->limit(10)
                ->get();

            $total = $results['articles']->count()
                + $results['products']->count()
                + $results['glossary']->count()
                + $results['threads']->count();
        }

        return view('search.index', compact('q', 'results', 'total'));
    }
}