<?php

namespace Modules\CCMS\Traits;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\Request;

trait UpdateCustomFields
{
    public static function bootUpdateCustomFields()
    {
        static::saving(function (Model $model) {
            if (method_exists($model, 'processCustomFields')) {
                $model->processCustomFields(
                    request: app(Request::class),
                    model: $model,
                );
            }
        });
    }

    public function processCustomFields(Request $request, Model $model)
    {
        if ($this->sectionWasRemoved($model)) {
            $this->custom = null;
            return;
        }

        if ($this->validateCustomFieldsInput($request)) {
            $this->custom = $this->transformCustomFields($request);
        }
    }

    public function sectionWasRemoved(Model $model): bool
    {
        return is_array($model->section) && !in_array("custom-field-section", $model->section, true);
    }

    protected function validateCustomFieldsInput(Request $request): bool
    {
        return $request->filled('key') && is_array($request->key) &&
            (!isset($request->icon) || is_array($request->icon)) &&
            (!isset($request->value) || is_array($request->value));
    }

    protected function transformCustomFields(Request $request): array
    {
        return collect($request->key)
            ->map(function ($key, $index) use ($request) {
                return [
                    'icon' => $this->sanitizeField($request->icon[$index] ?? null),
                    'key' => $this->sanitizeField($key),
                    'value' => $this->sanitizeField($request->value[$index] ?? null),
                ];
            })
            ->filter(function ($item) {
                return !empty($item['key']);
            })
            ->values()
            ->all();
    }

    protected function sanitizeField($value)
    {
        if (is_string($value)) {
            return trim(strip_tags($value));
        }

        return $value;
    }
}