dealhub/app/Models/Deal.php

<?php

namespace App\Models;

use App\Enums\InteractionType;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Support\Facades\Auth;

class Deal extends Model
{
    public function broker(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    public function category(): BelongsTo
    {
        return $this->belongsTo(DealCategory::class, 'deal_category_id');
    }

    public function interactions(): HasMany
    {
        return $this->hasMany(Interaction::class);
    }

    /**
     * Get deals that are active
     * @param  Builder  $query
     * @return Builder
     */
    public function scopeWithActiveDeals(Builder $query): Builder
    {
        return $query->where('active', true);
    }

    /**
     * Get if the current user has liked or favorite the deal
     * @param  Builder  $query
     * @return Builder
     */
    public function scopeWithCurrentUserInteractions(Builder $query): Builder
    {
        return $query->withExists([
            'interactions as is_liked' => function ($query) {
                $query->where('user_id', Auth::id())
                    ->where('type', InteractionType::Like);
            },
            'interactions as is_favorite' => function ($query) {
                $query->where('user_id', Auth::id())
                    ->where('type', InteractionType::Favorite);
            }
        ]);
    }

    public function scopeWithLikes(Builder $query): Builder
    {
        return $query->withCount([
            'interactions as total_likes' => function ($query) {
                $query->where('type', InteractionType::Like);
            }
        ]);
    }
}