safekat/ci4/app/Models/Chat/ChatDeparmentModel.php

<?php

namespace App\Models\Chat;

use App\Models\Usuarios\UserModel;
use CodeIgniter\Model;

class ChatDeparmentModel extends Model
{
    protected $table            = 'chat_departments';
    protected $primaryKey       = 'id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $useSoftDeletes   = false;
    protected $protectFields    = true;
    protected $allowedFields    = [
        "name",
        "display",
        "description",
        "type"
    ];

    protected bool $allowEmptyInserts = false;
    protected bool $updateOnlyChanged = true;

    protected array $casts = [];
    protected array $castHandlers = [];

    // Dates
    protected $useTimestamps = false;
    protected $dateFormat    = 'datetime';
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';
    protected $deletedField  = 'deleted_at';

    // Validation
    protected $validationRules      = [];
    protected $validationMessages   = [];
    protected $skipValidation       = false;
    protected $cleanValidationRules = true;

    // Callbacks
    protected $allowCallbacks = true;
    protected $beforeInsert   = [];
    protected $afterInsert    = [];
    protected $beforeUpdate   = [];
    protected $afterUpdate    = [];
    protected $beforeFind     = [];
    protected $afterFind      = [];
    protected $beforeDelete   = [];
    protected $afterDelete    = [];

    public function getChatDepartments(string $type = "general"): array
    {
        $userModel = model(UserModel::class);
        $query = $this->db->table('chat_departments')
            ->select(
                [
                    'chat_departments.id',
                    'chat_departments.name',
                    'chat_departments.display',
                    'chat_department_users.user_id'
                ]
            )
            ->join(
                "chat_department_users",
                "chat_department_users.chat_department_id = chat_departments.id",
                'left'
            )
            ->join(
                "users",
                "chat_department_users.user_id = users.id",
                'left'
            )->where("chat_departments.type",$type)
            ->where("chat_department_users.user_id",auth()->user()->id);
        
        $results = $query->get()->getResultArray();
        // Create the desired structure
        $departments = [];

        foreach ($results as $row) {
            $departmentName = $row['name'];

            // If the department is not yet added to the array, initialize it
            if (!isset($departments[$departmentName])) {
                $departments[$departmentName] = [
                    'id' => $row['id'],
                    'name' => $row['name'],
                    'display' => $row['display'],
                    'users' => [] // Initialize users as an empty array
                ];
            }

            // If user_id is not null, add the user to the department's 'users' array
            if ($row['user_id']) {
                $departments[$departmentName]['users'][] = $userModel->find($row["user_id"]);
            }
        }
        return $departments;
    }
}