Knockout-Lite/app/Knockout/Post.php

<?php

namespace App\Knockout;

use App\Helper\BBCode;
use Carbon\Carbon;
use Illuminate\Support\Facades\Cache;

class Post {

    // meta
    public $id;
    public $date;
    public $content;

    // related
    public User $user;
    public $ratings = [];

    public static function unwrap($post)
    {
        $s = new self();

        $s->id              = $post->id;
        $s->date            = Carbon::parse($post->createdAt)->format('d/m/Y H:i');
        $s->content         = $post->content;

        // grab user if available
        if (isset($post->user) && isset($post->user->id)) {
            $s->user = User::unwrap($post->user);
        }

        // grab ratings if available
        $s->ratings = array_map(function($rating) {
            return Rating::unwrap($rating);
        }, $post->ratings ?? []);

        return $s;
    }

    private static function requestAll(int $userId, int $page = 1): Dataset
    {
        $data = (new AbstractData)->httpGet(sprintf('/user/%u/posts/%u', $userId, $page));
        $json = json_decode($data);
        $records = array_map(function($user) {
            return self::unwrap($user);
        }, $json->posts);
        return (new Dataset($records))
            ->setTotalRecords($json->totalPosts)
            ->setCurrentPage($page)
            ->setRecordsPerPage(40);
    }

    public static function updateAll(int $userId, int $page = 0): Dataset
    {
        $key = sprintf('user-posts-%u-%u', $userId, $page);
        $data = self::requestAll($userId, $page);
        Cache::put($key, $data, 300);
        return $data;
    }

    public static function all(int $userId, int $page = 0): Dataset
    {
        $key = sprintf('user-posts-%u-%u', $userId, $page);
        return Cache::get($key, function() use($userId, $page) {
            return self::updateAll($userId, $page);
        });
    }

    public function dateDiff()
    {
        return Carbon::createFromFormat('d/m/Y H:i', $this->date)->diffForHumans();
    }

    public function render()
    {
        return (new BBCode($this->content))->render();
    }

}