php/app/Http/Controllers/CommentController.php

<?php

namespace App\Http\Controllers;

use App\Models\Comment;
use App\Models\Post;
use Illuminate\Http\Request;

class CommentController extends Controller
{
    public function store(Request $request, Post $post)
    {
        $validated = $request->validate([
            'content' => 'required|string',
            'parent_id' => 'nullable|exists:comments,id',
        ]);

        $comment = Comment::create([
            'post_id' => $post->id,
            'user_id' => auth()->id(),
            'parent_id' => $validated['parent_id'] ?? null,
            'content' => $validated['content'],
        ]);

        return back()->with('success', 'Comment posted successfully!');
    }

    public function destroy(Comment $comment)
    {
        if ($comment->user_id !== auth()->id()) {
            abort(403);
        }

        $comment->delete();
        return back()->with('success', 'Comment deleted successfully!');
    }
}