<?php
namespace Formipay\Admin;
use Formipay\Traits\SingletonTrait;

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

class ReactAdmin {

    use SingletonTrait;

    protected function __construct() {

        add_action( 'admin_enqueue_scripts', [$this, 'enqueue_assets'] );
        add_filter( 'formipay/admin/data', [$this, 'localize_data'] );

    }

    public function enqueue_assets() {

        $screen = get_current_screen();

        // Load React assets on Formipay admin pages OR on post edit screens for our CPTs
        $is_formipay_admin = strpos($screen->id, 'formipay') !== false;
        $is_formipay_cpt = $screen->base === 'post' && in_array($screen->post_type, ['formipay-coupon', 'formipay-product', 'formipay-form']);

        if (!$is_formipay_admin && !$is_formipay_cpt) {
            return;
        }

        // Enqueue React build assets
        $build_dir = FORMIPAY_PATH . 'build';
        $build_url = FORMIPAY_URL . 'build';

        if (!file_exists($build_dir . '/admin.asset.php')) {
            error_log('[Formipay] Build files not found at: ' . $build_dir . '/admin.asset.php');
            return; // Build not generated yet
        }

        $assets_file = require $build_dir . '/admin.asset.php';
        $dependencies = $assets_file['dependencies'] ?? [];

        // Filter out icon build dependencies - they're bundled, not separate scripts
        $original_count = count($dependencies);
        $dependencies = array_values(array_filter($dependencies, function($dep) {
            return strpos($dep, 'wp-icons/build/') === false;
        }));
        error_log('[Formipay] Filtered dependencies: ' . $original_count . ' -> ' . count($dependencies));

        $version = $assets_file['version'] ?? FORMIPAY_VERSION;

        wp_enqueue_style(
            'formipay-admin-style',
            $build_url . '/admin.css',
            [],
            $version
        );

        wp_enqueue_script(
            'formipay-admin',
            $build_url . '/admin.js',
            $dependencies,
            $version,
            true
        );

        // Localize script with required data
        $data = apply_filters('formipay/admin/data', [
            'ajaxUrl' => admin_url('admin-ajax.php'),
            'restUrl' => rest_url('formipay/v1'),
            'nonce' => wp_create_nonce('formipay-admin'),
            'pluginUrl' => FORMIPAY_URL,
            'siteUrl' => site_url(),
        ]);

        // Debug logging
        error_log('[Formipay] Enqueuing React assets on screen: ' . $screen->id);
        error_log('[Formipay] Page data: ' . wp_json_encode($data));

        wp_localize_script('formipay-admin', 'formipayAdmin', $data);

    }

    public function localize_data( $data ) {

        $screen = get_current_screen();
        $page = '';

        // Determine current page based on screen ID
        if ( $screen->id === 'formipay_page_formipay-orders' ) {
            $page = 'orders';
        } elseif ( $screen->id === 'formipay_page_formipay-customers' ) {
            $page = 'customers';
        } elseif ( $screen->id === 'formipay_page_formipay-products' ) {
            $page = 'products';
        } elseif ( $screen->id === 'toplevel_page_formipay' ) {
            $page = 'forms';
        } elseif ( $screen->id === 'formipay_page_formipay-coupons' ) {
            $page = 'coupons';
        } elseif ( $screen->id === 'formipay_page_formipay-access' ) {
            $page = 'access';
        } elseif ( $screen->id === 'formipay_page_formipay-licenses' ) {
            $page = 'licenses';
        }

        if ( $page ) {
            $data[$page] = $this->get_page_data( $page );
        }

        return $data;

    }

    private function get_page_data( $page ) {

        $data = [];

        switch ( $page ) {

            case 'orders':
                $data['statusOptions'] = formipay_order_status_list();
                break;

            case 'customers':
                $data['columns'] = [
                    'id' => __( 'ID', 'formipay' ),
                    'name' => __( 'Name', 'formipay' ),
                    'email' => __( 'Email', 'formipay' ),
                    'phone' => __( 'Phone', 'formipay' ),
                    'total_order' => __( 'Total Orders', 'formipay' ),
                ];
                break;

            case 'products':
                $data['currencies'] = formipay_global_currency_options();
                break;

            case 'forms':
            case 'coupons':
            case 'access':
            case 'licenses':
                // These pages fetch data via AJAX, no initial data needed
                $data = [];
                break;

        }

        return $data;

    }

    /**
     * Render React mount point
     */
    public static function render_mount_point( $page ) {

        printf(
            '<div class="wrap"><div id="formipay-admin-root" data-formipay-mount="%s">Loading %s...</div></div>',
            esc_attr( $page ),
            esc_html( ucfirst( $page ) )
        );

    }

}