<?php

namespace App\Http\Controllers\Api\Blog;

use App\Http\Controllers\Controller;
use App\Http\Requests\Blog\StorePostRequest;
use App\Http\Requests\Blog\UpdatePostRequest;
use App\Http\Resources\PostResource;
use App\Models\Blog\Post;
use Illuminate\Http\Request;

class PostController extends Controller
{
    public function index(Request $request)
    {
        $filters = $request->only(['category', 'tag', 'search', 'author', 'published']);

        $sortField = $request->get('sort_field', 'published_at');
        $sortDirection = $request->get('sort_direction', 'desc');

        $perPage = $request->get('per_page', 10);

        $query = Post::with(['category', 'tags', 'author'])
            ->filter($filters)
            ->sort($sortField, $sortDirection);

        $posts = $query->paginate($perPage);

        return PostResource::collection($posts);
    }

    public function show($slug)
    {
        $post = Post::with(['category', 'tags', 'author', 'relatedPosts.category', 'relatedPosts.tags', 'relatedPosts.author'])
            ->where('slug', $slug)
            ->firstOrFail();

        return response()->json([
            'post' => new PostResource($post),
            'related_posts' => PostResource::collection($post->relatedPosts->sortByDesc('published_at')->take(5)),
        ], 200);
    }

    public function store(StorePostRequest $request)
    {
        $post = Post::create($request->validated());

        if ($request->has('tags')) {
            $post->tags()->attach($request->tags);
        }

        return new PostResource($post->load(['category', 'tags', 'author']));
    }

    public function update(UpdatePostRequest $request, $id)
    {
        $post = Post::findOrFail($id);
        $post->update($request->validated());

        if ($request->has('tags')) {
            $post->tags()->sync($request->tags);
        }

        return new PostResource($post->load(['category', 'tags', 'author']));
    }

    public function destroy($id)
    {
        $post = Post::findOrFail($id);
        $post->tags()->detach();
        $post->relatedPosts()->detach();
        $post->delete();

        return response()->json(['message' => 'Post deleted successfully'], 200);
    }
}