<?php

namespace App\Http\Controllers\Web;

use App\Http\Controllers\Controller;
use App\Services\ArticlesService;
use Illuminate\Http\Request;

use App\Models\Articles;

class ArticlesController extends Controller
{
    protected $oArticlesService;

    public function __construct(ArticlesService $oService)
    {
        $this->oArticlesService = $oService;
    }
    
    public function search(Request $oRequest, string $sKeyword)
    {
        $page = \App\Services\Seo::page($oRequest);
        $data = $this->oArticlesService->search($sKeyword, 'view');
        $data['seo'] = \App\Services\Seo::listMeta('搜索：'.$data['sKeywords'], '本站文章搜索结果', '/search/'.rawurlencode($data['sKeywords']), $page, false);
        return $this->listing($oRequest, $data);
    }

    public function like(int $iArticleId, Request $oRequest)
    {
        // 1. 获取/生成指纹
        $sFingerprint = $oRequest->cookie('visitor_token')
            ?? md5($oRequest->ip() . $oRequest->userAgent());

        // 2. 调用 Service
        $aResult = $this->oArticlesService->like($iArticleId, $oRequest->ip(), $sFingerprint);

        if (!$aResult['status']) {
            return response()->json($aResult);
        }

        // 3. 成功后下发持久 Cookie
        return response()->json($aResult)
            ->withCookie(cookie()->forever('visitor_token', $sFingerprint));
    }
    
    public function listByTag(Request $oRequest, string $sSlug)
    {
        $page = \App\Services\Seo::page($oRequest);
        $data = $this->oArticlesService->getTagArticles($sSlug, 'view');
        $data['seo'] = \App\Services\Seo::listMeta($data['oTag']->sName.'相关文章', '按标签浏览本站内容', '/tag/'.$sSlug, $page, false);
        return $this->listing($oRequest, $data);
    }
    public function home(Request $oRequest)
    {
        if ($oRequest->filled('s')) {
            abort_unless(is_string($oRequest->query('s')),404);
            return redirect(\App\Services\Seo::url('/search/'.rawurlencode(trim($oRequest->query('s')))),301);
        }
        $page = \App\Services\Seo::page($oRequest);
        if ($oRequest->has('page')) return redirect(\App\Services\Seo::url($page>1?'/freenode':'/', $page),301);
        $slug = $this->oArticlesService->getLatestFreeNodeSlug();
        if (!$slug) return response()->view('pages.articles.default.unavailable', [], 503)->header('Retry-After','3600');
        $data = $this->articleData($slug, $oRequest);
        $data['bIsHome'] = true;
        $data['seo'] = \App\Services\Seo::articleMeta($data['oArticle'], true);
        return view('pages.articles.default.show', $data);
    }
    public function list(Request $oRequest, string $sSlug1, ?string $sSlug2 = null)
    {
        $page = \App\Services\Seo::page($oRequest);
        $data = $this->oArticlesService->getCategoryArticles($sSlug2 ?? $sSlug1, 'view');
        $category = $data['oCategory'];
        $path = \App\Services\Seo::categoryPath($category);
        if ($sSlug2) abort_unless($path === '/'.$sSlug1.'/'.$sSlug2, 404);
        $heading = $category->sSlug === 'freenode' ? '免费节点更新记录' : \App\Services\Seo::categoryName($category);
        $desc = $category->sSlug === 'freenode' ? '按发布时间查看免费节点历史记录；获取当前订阅请访问首页。' : ($category->sDescription ?: $heading.'相关文章与使用说明');
        $data['seo'] = \App\Services\Seo::listMeta($heading, $desc, $path, $page, $data['oArticles']->total()>0);
        if ('/'.$sSlug1 !== $path && !$sSlug2) return redirect(\App\Services\Seo::url($path,$page),301);
        return $this->listing($oRequest, $data);
    }
    private function listing(Request $request, array $data)
    {
        $page = \App\Services\Seo::page($request);
        abort_if($page > $data['oArticles']->lastPage(),404);
        if ($request->has('page') && $page === 1) return redirect($data['seo']['canonical'],301);
        $data['oArticles']->withPath(strtok($data['seo']['canonical'],'?'));
        return view('pages.articles.default.index', $data);
    }
    private function articleData(string $slug, Request $request): array
    {
        return $this->oArticlesService->getArticle($slug, $request->ip(), $request->cookie('visitor_token') ?? md5($request->ip().$request->userAgent()));
    }
    public function show(string $sArticleSlug, Request $oRequest)
    {
        $data = $this->articleData($sArticleSlug,$oRequest);
        $data['seo'] = \App\Services\Seo::articleMeta($data['oArticle']);
        return view('pages.articles.default.show',$data);
    }
}