<?php
/**
 * Admin AJAX handlers for Add To Cart AI.
 * 
 * @package Add_To_Cart_AI
 */

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

class ACAI_AdminAjax
{

    public function __construct()
    {
        add_action('wp_ajax_a2cai_validate_license', array($this, 'ajax_validate_license'));
        add_action('wp_ajax_a2cai_start_product_load', array($this, 'ajax_start_product_load'));
        add_action('wp_ajax_a2cai_reset_setup', array($this, 'ajax_reset_setup'));
        add_action('wp_ajax_a2cai_fetch_product_load_status', array($this, 'ajax_fetch_product_load_status'));
    }

    public function ajax_validate_license()
    {
        // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce is verified, not stored.
        if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'a2cai_nonce')) {
            wp_send_json_error(esc_html__('Nonce verification failed', 'add-to-cart-ai'));
            return;
        }

        $activation_key = isset($_POST['activation_key']) ? sanitize_text_field(wp_unslash($_POST['activation_key'])) : '';

        $siteLanguage = get_bloginfo('language');
        $languageCode = substr($siteLanguage, 0, 2); // Extracts 'en' from 'en-US'

        // Ensure the language code is one of the supported languages
        $supportedLanguages = ['es', 'en'];
        $lang = in_array($languageCode, $supportedLanguages) ? $languageCode : 'en'; // Default to 'en' if not supported

        $response = wp_remote_post(ACAI_API_BASE_URL . '/stores/validate-license', array(
            'headers' => array(
                'Content-Type' => 'application/json',
            ),
            'body' => json_encode(array(
                'activationKey' => $activation_key,
            ))
        ));

        if (is_wp_error($response)) {
            wp_send_json_error(['message' => esc_html__('Unexpected error. Please contact support.', 'add-to-cart-ai')]);
        }

        $response_code = wp_remote_retrieve_response_code($response);
        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body);

        if ($response_code == 201) {
            update_option('a2cai_store_id', $data->storeId);
            update_option('a2cai_widget_token', $data->widgetToken);
            update_option('a2cai_activation_key', wp_hash_password($activation_key));
            wp_send_json_success(['message' => esc_html($data->message)]);
        } else {
            wp_send_json_error(['message' => esc_html($data->message)]);
        }
    }

    public function ajax_start_product_load()
    {
        // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce is verified, not stored.
        if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'a2cai_nonce')) {
            wp_send_json_error(esc_html__('Nonce verification failed', 'add-to-cart-ai'));
            return;
        }

        $store_id = intval(get_option('a2cai_store_id', ''));

        $product_batch_endpoint = get_rest_url(null, 'a2cai/v1/products/batch');
        $start_product_load_endpoint = ACAI_API_BASE_URL . '/jobs/extraction';
        $activation_key = isset($_POST['activation_key']) ? sanitize_text_field(wp_unslash($_POST['activation_key'])) : '';
        
        if (empty($activation_key)) {
            wp_send_json_error(['message' => esc_html__('Missing activation key', 'add-to-cart-ai')]);
            return;
        }

        $domain = isset($_POST['domain']) ? sanitize_text_field(wp_unslash($_POST['domain'])) : '';
        $wp_internal_url = defined('ACAI_WORDPRESS_INTERNAL_URL') ? ACAI_WORDPRESS_INTERNAL_URL : content_url();
        $product_batch_endpoint = defined('ACAI_WORDPRESS_INTERNAL_URL') ? ACAI_WORDPRESS_INTERNAL_URL . '/wp-json/a2cai/v1/products/batch' : get_rest_url(null, 'a2cai/v1/products/batch');
        $current_user_endpoint = defined('ACAI_WORDPRESS_INTERNAL_URL') ? ACAI_WORDPRESS_INTERNAL_URL . '/wp-json/a2cai/v1/current-user' : get_rest_url(null, 'a2cai/v1/current-user');

        $response = wp_remote_post($start_product_load_endpoint, array(
            'headers' => array(
                'Content-Type' => 'application/json',
                'Authorization' => 'Bearer ' . $activation_key
            ),
            'body' => json_encode(array(
                'domain' => $domain,
                'cartUrl' => wc_get_cart_url(),
                'loginUrl' => get_permalink(get_option('woocommerce_myaccount_page_id')),
                'productBatchRetrievalUrl' => $product_batch_endpoint,
                'productBatchEndpoint' => $product_batch_endpoint,
                'currentUserEndpoint' => $current_user_endpoint,
            )),
            'timeout' => 30
        ));

        if (is_wp_error($response)) {
            wp_send_json_error(['message' => esc_html__('Unexpected error. Please contact support.', 'add-to-cart-ai')]);
        }

        $response_code = wp_remote_retrieve_response_code($response);
        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);


        if ($response_code == 201) {
            update_option('a2cai_setup_completed', true);
            $job_started_at = $data['jobStartedAt'];
            update_option('a2cai_sync_complete', false);
            update_option('a2cai_sync_job_started_at', $job_started_at);
            wp_send_json_success();
        } else {
            wp_send_json_error(['message' => esc_html($data['message'] ?? __('An error occurred.', 'add-to-cart-ai'))]);
        }
    }

    public function ajax_reset_setup()
    {
        // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce is verified, not stored.
        if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'a2cai_nonce')) {
            wp_send_json_error(esc_html__('Nonce verification failed', 'add-to-cart-ai'));
            return;
        }

        update_option('a2cai_setup_completed', false);
        update_option('a2cai_store_id', '');
        update_option('a2cai_activation_key', '');
        update_option('a2cai_resume_at_step_if_interrupted', 0);
        wp_send_json_success();
    }

    public function ajax_fetch_product_load_status()
    {
        // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Nonce is verified, not stored.
        if (!isset($_POST['nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['nonce'])), 'a2cai_nonce')) {
            wp_send_json_error(esc_html__('Nonce verification failed', 'add-to-cart-ai'));
            return;
        }

        $store_id = get_option('a2cai_store_id', '');

        $activation_key = get_option('a2cai_activation_key', '');
        $status_endpoint = ACAI_API_BASE_URL . '/stores/' . $store_id . '/product-status-from-plugin';

        $response = wp_remote_get($status_endpoint, array(
            'headers' => array(
                'Content-Type' => 'application/json',
                'Authorization' => 'Bearer ' . $activation_key
            ),
            'timeout' => 30
        ));

        if (is_wp_error($response)) {
            wp_send_json_error(['message' => esc_html__('Unexpected error. Please contact support.', 'add-to-cart-ai')]);
        }

        $response_code = wp_remote_retrieve_response_code($response);
        $body = wp_remote_retrieve_body($response);
        $data = json_decode($body, true);

        if ($response_code == 200) {
            if ($data['status'] === 'completed') {
                update_option('a2cai_sync_complete', true);
            }
            wp_send_json_success(['status' => esc_html($data['status'])]);
        } else {
            wp_send_json_error([
                'message' => esc_html($data['message'] ?? __('An error occurred.', 'add-to-cart-ai')),
                'store_id' => esc_html($store_id),
                'endpoint' => esc_url($status_endpoint)
            ]);
        }
    }
}

new ACAI_AdminAjax();