<?php
declare(strict_types=1);


namespace OneClickFormSync\Forms\Forminator;

if (!defined('ABSPATH')) {
    exit;
}

use OneClickFormSync\Forms\DTO\NormalizedSubmission;
use OneClickFormSync\Forms\DTO\SubmissionField;

/**
 * Normalizes Forminator submission data into NormalizedSubmission DTOs.
 */
class ForminatorSubmissionNormalizer
{
    /**
     * Normalize Forminator submitted entry fields.
     *
     * @param array|object $submissionData Array containing 'field_data', 'form_id', 'entry_id', 'form_name', etc.
     * @param string       $customParamsString Comma-separated list of custom query parameters to track.
     * @return NormalizedSubmission
     */
    public function normalize($submissionData, string $customParamsString = ''): NormalizedSubmission
    {
        if (is_object($submissionData)) {
            $submissionData = (array) $submissionData;
        }

        $rawFields = $submissionData['field_data'] ?? $submissionData['fields'] ?? [];
        $formId    = (string)($submissionData['form_id'] ?? $submissionData['form_data']['id'] ?? '');
        $formName  = (string)($submissionData['form_name'] ?? $submissionData['form_title'] ?? '');
        $entryId   = (string)($submissionData['entry_id'] ?? uniqid('forminator_', true));

        // If form name is empty, attempt to lookup Forminator form title if Forminator API exists
        if (empty($formName) && !empty($formId) && class_exists('Forminator_API')) {
            $formModel = \Forminator_API::get_form((int)$formId);
            if (is_object($formModel) && isset($formModel->name)) {
                $formName = (string)$formModel->name;
            } elseif (is_array($formModel) && isset($formModel['name'])) {
                $formName = (string)$formModel['name'];
            }
        }

        if (empty($formName) && !empty($formId)) {
            $formName = 'Forminator Form #' . $formId;
        }

        $ignoredTypes = [
            'pagebreak',
            'html',
            'divider',
            'captcha',
            'recaptcha',
            'turnstile',
            'hcaptcha',
            'section',
            'stripe',
            'paypal',
        ];

        $fields = [];
        foreach ($rawFields as $key => $fieldData) {
            if (is_object($fieldData)) {
                $type  = strtolower(trim((string)($fieldData->type ?? $fieldData->field_type ?? '')));
                $id    = (string)($fieldData->name ?? $fieldData->id ?? $fieldData->field_id ?? $key);
                $label = (string)($fieldData->field_label ?? $fieldData->title ?? $fieldData->name ?? $id);
                $value = $fieldData->value ?? '';
            } else {
                $type  = strtolower(trim((string)($fieldData['type'] ?? $fieldData['field_type'] ?? '')));
                $id    = (string)($fieldData['name'] ?? $fieldData['id'] ?? $fieldData['field_id'] ?? $key);
                $label = (string)($fieldData['field_label'] ?? $fieldData['title'] ?? $fieldData['name'] ?? $id);
                $value = $fieldData['value'] ?? '';
            }

            if (!empty($type) && in_array($type, $ignoredTypes, true)) {
                continue;
            }

            // Handle array values (e.g. checkboxes / multi-selects)
            if (is_array($value)) {
                $value = implode(', ', array_map(function ($val) {
                    return is_scalar($val) ? (string)$val : json_encode($val);
                }, $value));
            }

            $fields[] = new SubmissionField($id, $label, $value);
        }

        // Collect metadata/visitor details.
        $userId = get_current_user_id();
        $userEmail = '';
        if ($userId > 0) {
            $currentUser = wp_get_current_user();
            $userEmail = $currentUser->user_email;
        }

        // Get submission page URL.
        $pageUrl = '';
        if (isset($_POST['referrer'])) {
            $pageUrl = esc_url_raw(wp_unslash($_POST['referrer']));
        } elseif (isset($_SERVER['HTTP_REFERER'])) {
            $pageUrl = esc_url_raw(wp_unslash($_SERVER['HTTP_REFERER']));
        }

        // Extract tracking parameters.
        $trackingParams = [
            'utm_source'   => '',
            'utm_medium'   => '',
            'utm_campaign' => '',
            'utm_term'     => '',
            'utm_content'  => '',
        ];

        if (!empty($customParamsString)) {
            $customKeys = array_map('trim', explode(',', $customParamsString));
            foreach ($customKeys as $key) {
                $parts = array_map('trim', explode('|', $key));
                $paramName = $parts[0];
                if (!empty($paramName)) {
                    $trackingParams[$paramName] = '';
                }
            }
        }

        // 1. Try referrer URL query string
        if (!empty($pageUrl)) {
            $queryString = wp_parse_url($pageUrl, PHP_URL_QUERY);
            if (!empty($queryString)) {
                wp_parse_str($queryString, $parsedQuery);
                foreach (array_keys($trackingParams) as $key) {
                    if (!empty($parsedQuery[$key])) {
                        $trackingParams[$key] = sanitize_text_field($parsedQuery[$key]);
                    }
                }
            }
        }

        // 2. Fallback to GET, POST, or COOKIE
        foreach (array_keys($trackingParams) as $key) {
            if (empty($trackingParams[$key])) {
                if (isset($_GET[$key])) {
                    $trackingParams[$key] = sanitize_text_field(wp_unslash($_GET[$key]));
                } elseif (isset($_POST[$key])) {
                    $trackingParams[$key] = sanitize_text_field(wp_unslash($_POST[$key]));
                } elseif (isset($_COOKIE['oneclickformsync_' . $key])) {
                    $trackingParams[$key] = sanitize_text_field(wp_unslash($_COOKIE['oneclickformsync_' . $key]));
                } elseif (isset($_COOKIE[$key])) {
                    $trackingParams[$key] = sanitize_text_field(wp_unslash($_COOKIE[$key]));
                }
            }
        }

        $metadata = [
            'user_ip' => sanitize_text_field($_SERVER['REMOTE_ADDR'] ?? ''),
        ];
        foreach ($trackingParams as $key => $val) {
            $metadata[$key] = $val;
        }

        return new NormalizedSubmission([
            'provider_id'     => 'forminator',
            'form_id'         => $formId,
            'form_name'       => $formName,
            'submission_id'   => 'oneclickformsync_fmt_' . $entryId,
            'submission_date' => current_time('Y-m-d'),
            'submission_time' => current_time('H:i:s'),
            'page_url'        => $pageUrl,
            'user_id'         => $userId,
            'user_email'      => $userEmail,
            'fields'          => $fields,
            'metadata'        => $metadata,
        ]);
    }
}