<?php

namespace FluentCrm\App\Hooks\Handlers;

use FluentCrm\App\Models\Subscriber;
use FluentCrm\App\Services\AutoSubscribe;
use FluentCrm\App\Services\Funnel\FunnelHelper;
use FluentCrm\App\Services\Helper;
use FluentCrm\Framework\Support\Arr;

/**
 *  AutoSubscribeHandler Class
 *
 * Used to handle the auto-subscribe functionality for different WordPress Events.
 *
 * @package FluentCrm\App\Hooks
 *
 * @version 1.0.0
 */
class AutoSubscribeHandler
{

    public function register()
    {
        add_action('user_register', array($this, 'userRegistrationHandler'), 99, 1);
        add_action('comment_post', array($this, 'handleCommentPost'), 99, 3);
        add_action('profile_update', array($this, 'syncUserUpdate'), 10, 3);
        add_action('delete_user', array($this, 'maybeDeleteContact'), 10, 3);
        add_action('woocommerce_customer_save_address', array($this, 'syncWooAddressUpdate'), 10, 2);

        add_action('wp_login', array($this, 'maybeAddCountryToProfile'), 99, 2);
    }

    public function userRegistrationHandler($userId)
    {
        if (is_multisite()) {
            if (is_network_admin()) {
                return false;
            }
            if (function_exists('WP_Ultimo')) {
                return false;
            }
        }

        $settings = (new AutoSubscribe())->getRegistrationSettings();

        if (Arr::get($settings, 'status') != 'yes') {

            $user = get_user_by('ID', $userId);
            $contact = Subscriber::where('email', $user->user_email)->first();
            if ($contact && $contact->user_id != $user->ID) {
                fluentCrmDb()->table('fc_subscribers')
                    ->where('id', $contact->id)
                    ->update([
                        'user_id' => $user->ID
                    ]);
            }

            return false;
        }

        $subscriberData = FunnelHelper::prepareUserData($userId);
        if ($listId = Arr::get($settings, 'target_list')) {
            $subscriberData['lists'] = [$listId];
        }

        if ($tags = Arr::get($settings, 'target_tags')) {
            $subscriberData['tags'] = $tags;
        }

        $isDoubleOptin = Arr::get($settings, 'double_optin') == 'yes';

        if ($isDoubleOptin) {
            $subscriberData['status'] = 'pending';
        } else {
            $subscriberData['status'] = 'subscribed';
        }

        $contact = FunnelHelper::createOrUpdateContact($subscriberData);

        if (!$contact) {
            return false;
        }

        if ($contact->status == 'pending' && $subscriberData['status'] == 'pending') {
            $contact->sendDoubleOptinEmail();
        }

        add_action('updated_user_meta', function ($meta_id, $userId, $meta_key, $_meta_value) use ($contact) {
            if ($userId == $contact->user_id && ($meta_key == 'first_name' || $meta_key == 'last_name') && $_meta_value) {
                if ($contact->{$meta_key} != $_meta_value) {
                    fluentCrmDb()->table('fc_subscribers')
                        ->where('id', $contact->id)
                        ->update([
                            $meta_key => $_meta_value
                        ]);
                }
            }
        }, 10, 4);

    }

    public function addSubscribeCheckbox($buttonHtml)
    {

        $settings = (new AutoSubscribe())->getCommentSettings();

        /**
         * Determine the settings for the comment form subscribe feature in FluentCRM.
         *
         * This filter allows modification of the settings used for the comment form subscribe feature in FluentCRM.
         *
         * @param array $settings The current settings for the comment form subscribe feature.
         * @return array The modified settings for the comment form subscribe feature.
         * @since 2.7.0
         *
         */
        $settings = apply_filters('fluent_crm/comment_form_subscribe_settings', $settings);

        if (Arr::get($settings, 'status') != 'yes') {
            return $buttonHtml;
        }

        if (Arr::get($settings, 'show_only_new') == 'yes') {
            if ($userId = get_current_user_id()) {
                $user = get_user_by('ID', $userId);
                $contact = Subscriber::where('user_id', $userId)->orWhere('email', $user->user_email)->first();
                if ($contact && $contact->status == 'subscribed') {
                    return $buttonHtml;
                }
            }
        }

        $label = Arr::get($settings, 'checkbox_label');
        if (!$label) {
            $label = __('Subscribe to newsletter', 'fluent-crm');
        }

        $checkedTag = '';

        if (Arr::get($settings, 'auto_checked') == 'yes') {
            $checkedTag = 'checked="true"';
        }

        $html = '<p class="comment-form-fc-consent comment-form-cookies-consent"><input ' . $checkedTag . ' id="wp-comment-fc-consent" name="wp-comment-fc-consent" type="checkbox" value="yes"><label for="wp-comment-fc-consent">' . $label . '</label></p>';

        return $html . $buttonHtml;
    }

    public function handleCommentPost($commentId, $isApproved, $commentData)
    {
        // is this a spam comment?
        if ($isApproved === 'spam') {
            return false;
        }

        if (defined('WC_PLUGIN_FILE') && Arr::get($commentData, 'comment_type') == 'review') {
            do_action('fluentcrm_woo_review_comment_post', $commentId, $isApproved, $commentData);
        }

        $isChecked = Arr::get($_REQUEST, 'wp-comment-fc-consent') == 'yes';
        if (!$isChecked) {
            return false;
        }

        $subscriberData = [
            'full_name'  => Arr::get($commentData, 'comment_author'),
            'email'      => Arr::get($commentData, 'comment_author_email'),
            'ip_address' => Arr::get($commentData, 'comment_author_IP')
        ];

        if ($userId = Arr::get($commentData, 'user_id')) {
            $subscriberData['user_id'] = $userId;
        }

        $subscriberData = array_filter($subscriberData);

        $settings = (new AutoSubscribe())->getCommentSettings();

        if ($listId = Arr::get($settings, 'target_list')) {
            $subscriberData['lists'] = [$listId];
        }

        if ($tags = Arr::get($settings, 'target_tags')) {
            $subscriberData['tags'] = $tags;
        }

        $isDoubleOptin = Arr::get($settings, 'double_optin') == 'yes';

        if ($isDoubleOptin) {
            $subscriberData['status'] = 'pending';
        }

        $contact = FunnelHelper::createOrUpdateContact($subscriberData);

        if (!$contact) {
            return false;
        }

        if (!$contact->country) {
            // get CF Country from request header: CF-IPCountry
            $countryCode = sanitize_text_field($_SERVER['HTTP_CF_IPCOUNTRY'] ?? '');
            if ($countryCode && preg_match('/^[A-Z]{2}$/', $countryCode) && $countryCode !== 'XX') {
                $contact->country = $countryCode;
                $contact->save();
            }
        }


        if ($contact->status == 'pending') {
            $contact->sendDoubleOptinEmail();
        }

        return true;
    }

    public function syncUserUpdate($userId, $oldData, $newData = [])
    {

        if (is_multisite() && is_network_admin()) {
            return false;
        }

        if (!empty($newData['user_pass'])) {
            $user = get_user_by('ID', $userId);
            (new Cleanup())->handleUserPasswordChanged($user);
        }

        if (!Helper::isUserSyncEnabled()) {
            return false;
        }

        // check if user email has been changed
        $user = get_user_by('ID', $userId);

        if ($user->user_email != $oldData->user_email) {
            // email has been changed
            $oldSubscriber = Subscriber::where('email', $oldData->user_email)->first();

            // check if a contact is exist with the new email id
            $newSubscriber = Subscriber::where('email', $user->user_email)->first();

            if ($newSubscriber) {
                fluentCrmDb()->table('fc_subscribers')
                    ->where('id', $oldSubscriber->id)
                    ->update([
                        'user_id' => ''
                    ]);
                $oldSubscriber = false;
            }

            if ($oldSubscriber) {
                $updateData = [
                    'email'      => $user->user_email,
                    'hash'       => md5($user->user_email),
                    'updated_at' => current_time('mysql'),
                    'user_id'    => $user->ID
                ];

                if ($user->first_name) {
                    $updateData['first_name'] = $user->first_name;
                }

                if ($user->last_name) {
                    $updateData['last_name'] = $user->last_name;
                }

                return fluentCrmDb()->table('fc_subscribers')
                    ->where('id', $oldSubscriber->id)
                    ->update($updateData);
            }
        }

        // we just have to change the first name and lastname
        $updateData = Helper::getWPMapUserInfo($user);

        unset($updateData['email']);

        if (!$updateData) {
            return false;
        }

        $updateData['updated_at'] = current_time('mysql');

        return fluentCrmDb()->table('fc_subscribers')
            ->where('email', $user->user_email)
            ->update($updateData);
    }

    public function maybeDeleteContact($userId, $reassignId, $user)
    {
        if (is_multisite() && is_network_admin()) {
            return false;
        }

        if (!Helper::isContactDeleteOnUserDeleteEnabled()) {
            return false;
        }

        $subscriber = Subscriber::where('user_id', $userId)->first();
        if (!$subscriber) {
            $subscriber = Subscriber::where('email', $user->user_email)->first();
        }

        if (!$subscriber) {
            return false;
        }

        return Helper::deleteContacts([$subscriber->id]);
    }

    public function syncWooAddressUpdate($userId, $addressType)
    {
        if ($addressType != 'billing') {
            return;
        }

        $customer = new \WC_Customer($userId);

        if (!$customer || !$customer->get_id()) {
            return;
        }

        $user = get_user_by('ID', $userId);
        $contact = Subscriber::where('email', $user->user_email)->first();

        $addressData = $customer->get_billing();

        $updateData = [
            'user_id'        => $userId,
            'address_line_1' => $addressData['address_1'],
            'address_line_2' => $addressData['address_2'],
            'city'           => $addressData['city'],
            'state'          => $addressData['state'],
            'country'        => $addressData['country'],
            'postal_code'    => $addressData['postcode']
        ];

        if ($contact) {
            $contact->fill($updateData);
            $dirty = $contact->getDirty();
            if ($dirty) {
                fluentCrmDb()->table('fc_subscribers')
                    ->where('id', $contact->id)
                    ->update($dirty);
                $contact = Subscriber::find($contact->id);
                do_action('fluent_crm/contact_updated', $contact, $dirty);
            }
        } else {
            FluentCrmApi('contacts')->createOrUpdate($updateData);
        }
    }

    public function maybeAddCountryToProfile($userLogin, $wpUser)
    {
        // get CF Country from request header: CF-IPCountry
        $countryCode = sanitize_text_field($_SERVER['HTTP_CF_IPCOUNTRY'] ?? '');

        if (!$countryCode || !preg_match('/^[A-Z]{2}$/', $countryCode) || $countryCode === 'XX') {
            return;
        }

        $contact = Subscriber::where('email', $wpUser->user_email)->first();
        if (!$contact || $contact->country) {
            return;
        }

        $updateData = [
            'country' => $countryCode
        ];

        if (empty($contact->user_id) || (int) $contact->user_id === (int) $wpUser->ID) {
            $updateData['user_id'] = $wpUser->ID;
        }

        fluentCrmDb()->table('fc_subscribers')
            ->where('id', $contact->id)
            ->update($updateData);
    }

}