<?php

namespace App\Blog\Controllers;

use App\Models\Comment;
use App\Models\Post;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class CommentController extends Controller
{
    public function index()
    {
        $comments = Comment::query()
            ->where('status', 'published')
            ->latest('created_at')
            ->with('post:id,title,slug')
            ->paginate(30);

        return theme_view('comments', compact('comments'));
    }

    public function store(Request $request, Post $post)
    {
        abort_unless($post->status === 'published', 404);

        if ($post->close_comment) {
            return back()->with('error', '该文章已关闭评论');
        }

        $data = $request->validate([
            'author_name' => ['required', 'string', 'max:50'],
            'author_email' => ['nullable', 'email', 'max:255'],
            'author_url' => ['nullable', 'url', 'max:255'],
            'content' => ['required', 'string', 'min:'.(int) blog_setting('comment_min_len', 2), 'max:'.(int) blog_setting('comment_max_len', 6000)],
        ]);

        // 蜜罐：隐藏字段被填写则直接丢弃（现代垃圾评论防护）
        if ($request->filled('website')) {
            return back()->with('error', '提交失败，请重试');
        }

        $minInterval = (int) blog_setting('comment_post_space', 20);
        if ($minInterval > 0) {
            $last = Comment::query()->where('ip', $request->ip())->latest('created_at')->first();
            if ($last && $last->created_at->diffInSeconds(now()) < $minInterval) {
                return back()->with('error', '评论太频繁，请稍后再试')->withInput();
            }
        }

        $status = (int) blog_setting('comment_audit', 0) === 1 ? 'pending' : 'published';

        $comment = DB::transaction(function () use ($post, $data, $request, $status) {
            $comment = $post->comments()->create([
                'user_id' => auth()->id(),
                'author_name' => $data['author_name'],
                'author_email' => $data['author_email'] ?? null,
                'author_url' => $data['author_url'] ?? null,
                'content' => $data['content'],
                'ip' => $request->ip(),
                'status' => $status,
            ]);

            if ($status === 'published') {
                $post->increment('comment_count');
            }

            return $comment;
        });

        if ($status === 'pending') {
            return back()->with('success', '评论已提交，等待审核通过后显示')->withFragment('comments');
        }

        return back()->with('success', '评论已发布')->withFragment('comments');
    }
}