osint/app/Models/Group.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Attributes\Fillable;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;

#[Fillable(['name', 'description', 'owner_id'])]
class Group extends Model
{
    use HasFactory;

    public function owner(): BelongsTo
    {
        return $this->belongsTo(User::class, 'owner_id');
    }

    public function members(): BelongsToMany
    {
        return $this->belongsToMany(User::class)->withTimestamps();
    }

    public function investigations(): BelongsToMany
    {
        return $this->belongsToMany(Investigation::class, 'investigation_group')
            ->withPivot('role')
            ->withTimestamps();
    }

    public function isAccessibleBy(User $user): bool
    {
        return $this->owner_id === $user->id
            || $this->members()->where('users.id', $user->id)->exists();
    }
}