<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Topic;
use App\Http\Resources\TopicResource;
use Illuminate\Http\JsonResponse;
use App\Http\Resources\ArticleResource;

class TopicsController extends Controller
{
    /**
     * Discover Topics
     * 
     *  Take Random 14 Topics from Database
     *
     */
    public function index()
    {
        return TopicResource::collection(Topic::inRandomOrder()->take(12)->get());
    }
    
    /**
     *  Load all the articles for a given topics
     *
     * @param  mixed $topic
     * @return JsonResponse
     */
    public function show(Topic $topic) : JsonResponse
    {
        return response()->json([
            'topic' => new TopicResource($topic),
            'articles' => ArticleResource::collection($topic->articles()->paginate(8))
        ]);
    }
}