eatvio-infra/app/Services/BlogPost/ListViewService.php

<?php

namespace App\Services\BlogPost;

use App\Livewire\BlogPost\ListView;
use App\Models\BlogPost;
use App\Services\Strategy\Criteried\AuthorCriteriaStrategy;
use App\Services\Strategy\Criteried\CriteriaStrategy;
use App\Services\Strategy\Criteried\DefaultCriteriaStrategy;
use App\Services\Strategy\Criteried\SearchCriteriaStrategy;
use App\Services\Strategy\Criteried\TagCriteriaStrategy;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Relations\MorphToMany;

class ListViewService
{
    private ListView $parentState;

    public function __construct(ListView $parent)
    {
        $this->parentState = $parent;
    }

    public function buildBlogPosts(): BlogPost|Builder
    {
        $posts = $this->getPrimaryCriteriedBlogPosts();

        return $this->getSecondaryCriteriedBlogPosts($posts);
    }

    private function getPrimaryCriteriedBlogPosts(): Builder|BlogPost|MorphToMany|array
    {
        $criteria = $this->getCriteriaStrategy();
        return $criteria->getBlogPosts();
    }

    private function getCriteriaStrategy(): CriteriaStrategy
    {
        $strategies = [
            'author' => AuthorCriteriaStrategy::class,
            'tag' => TagCriteriaStrategy::class,
            'search' => SearchCriteriaStrategy::class,
        ];

        foreach ($strategies as $condition => $strategyClass) {
            if ($this->parentState->{$condition}) {
                return new $strategyClass($this->parentState->{$condition});
            }
        }

        return new DefaultCriteriaStrategy();
    }

    private function getSecondaryCriteriedBlogPosts(Builder|BlogPost|MorphToMany|array $posts): BlogPost|Builder
    {
        return match ($this->parentState->typeFilter) {
            'user' => $posts->whereRelation('author', 'is_consultant', false),
            'consultant' => $posts->whereRelation('author', 'is_consultant', true),
            default => $posts,
        };
    }

    // private function getTagsCollection(): array
    // {
    //     return Recipe::all()->map(
    //         fn($r) => [
    //             $r->type,
    //             $r->tags->map(fn($t) => $t->id . '-' . $t->name)->all(),
    //         ]
    //     )->reduce(function ($acc, $item) {
    //         [$type, $tagNames] = $item;
    //
    //         foreach ($tagNames as $name) {
    //             if (isset($acc[$type][$name])) {
    //                 $acc[$type][$name] += 1;
    //             } else {
    //                 $acc[$type][$name] = 1;
    //             }
    //         }
    //
    //         return $acc;
    //     });
    // }
}