<?php

namespace App\Models;

use CodeIgniter\Model;

class SpecializationModel extends Model
{
    protected $table            = 'specializations';
    protected $primaryKey       = 'id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $protectFields    = true;
    protected $allowedFields    = ['name', 'status', 'created_at'];
    protected $useTimestamps = true;
    protected $createdField  = 'created_at';
 
    public function getOptionNames(): array
    {
        $databaseNames = $this->select('name')->orderBy('name', 'ASC')->findColumn('name') ?: [];
        natcasesort($databaseNames);
        return array_values(array_unique($databaseNames));
    }

    public function ensureNamesExist(array $names): array
    {
        $names = array_values(array_unique(array_filter(array_map(
            static fn ($name) => trim((string) $name),
            $names
        ))));

        if ($names === []) {
            return [];
        }

        $existingRows = $this->whereIn('name', $names)->findAll();
        $nameToId     = [];

        foreach ($existingRows as $row) {
            $nameToId[$row['name']] = (int) $row['id'];
        }

        foreach ($names as $name) {
            if (isset($nameToId[$name])) {
                continue;
            }

            $this->insert(['name' => $name, 'status' => 1]);
            $nameToId[$name] = (int) $this->getInsertID();
        }

        return $nameToId;
    }
}