<?php

namespace App\Models;

use CodeIgniter\Model;

class AppointmentPreviewModel extends Model
{
    protected $table            = 'appointment_previews';
    protected $primaryKey       = 'id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $useSoftDeletes   = false;
    protected $protectFields    = true;

    protected $allowedFields = [
        'patient_id',
        'patient_formatted_user_id',
        'services',
        'requested_date',
        'requested_time',
        'assigned_doctor_id',
        'assigned_doctor_formatted_id',
        'available_days_snapshot',
        'available_slots_snapshot',
        'status',
        'preview_token',
        'created_by',
        'expires_at',
    ];

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

    protected $useTimestamps = true;
    protected $dateFormat    = 'datetime';
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';

    protected $validationRules = [
        'patient_id'      => 'required|integer',
        'requested_date'  => 'required|valid_date[Y-m-d]',
        'requested_time'  => 'required',
        'status'          => 'permit_empty|in_list[draft,viewed,selected,booked,expired,cancelled]',
        'preview_token'   => 'permit_empty|max_length[64]',
    ];

    protected $validationMessages   = [];
    protected $skipValidation       = false;
    protected $cleanValidationRules = true;

    protected $allowCallbacks = true;
    protected $beforeInsert   = ['preparePreview'];
    protected $beforeUpdate   = ['normalizeJsonFields'];

    protected function preparePreview(array $eventData): array
    {
        $eventData = $this->normalizeJsonFields($eventData);

        if (empty($eventData['data']['preview_token'])) {
            $eventData['data']['preview_token'] = bin2hex(random_bytes(32));
        }

        if (empty($eventData['data']['status'])) {
            $eventData['data']['status'] = 'draft';
        }

        return $eventData;
    }

    protected function normalizeJsonFields(array $eventData): array
    {
        foreach (['services', 'available_days_snapshot', 'available_slots_snapshot'] as $field) {
            if (isset($eventData['data'][$field]) && is_array($eventData['data'][$field])) {
                $eventData['data'][$field] = json_encode($eventData['data'][$field]);
    // Removed AppointmentPreviewModel as appointment_previews table is dropped
    // Removed the entire class definition as it is no longer needed