WooCentr V4

					<?php
/**
 * Plugin Name: WooCentral Sync
 * Plugin URI: https://dottlinks.co.ke/
 * Description: Sync all WooCommerce sales data, orders data, inventory data, purchase history, and user data with Microsoft Dynamics NAV/business central.
 * Author: Dottlinks Services
 * Version: 1.0.0
 * Author URI: https://dottlinks.co.ke/
 * Text Domain: wootocentral_sync
 */

defined( 'ABSPATH' ) or die; // Prevents direct access to the plugin file

// Add menu item to WooCommerce Settings page
function wootocentral_sync_add_menu_item() {
    add_submenu_page( 'woocommerce', 'WooCentral Sync', 'WooCentral Sync', 'manage_options', 'wootocentral-sync', 'wootocentral_sync_output_settings_page' );
}
add_action( 'admin_menu', 'wootocentral_sync_add_menu_item' );

// Settings page HTML
function wootocentral_sync_output_settings_page() {
    ?>
    <div class="wrap">
        <h1><?php esc_html_e( 'WooCentral Sync Settings', 'wootocentral_sync' ); ?></h1>
        <form method="post" action="options.php">
            <?php settings_fields( 'wootocentral_sync_settings' ); ?>
            <?php do_settings_sections( 'wootocentral-sync' ); ?>
            <?php submit_button(); ?>
        </form>
    </div>
    <?php
}

// Register settings
function wootocentral_sync_register_settings() {
    // Add 'API Credentials' section to settings page
    add_settings_section( 'wootocentral_sync_api', esc_html__( 'API Credentials', 'wootocentral_sync' ), 'wootocentral_sync_output_api_section', 'wootocentral-sync' );

    // Add 'Client ID' field to 'API Credentials' section
    add_settings_field( 'wootocentral_sync_client_id', esc_html__( 'Client ID', 'wootocentral_sync' ), 'wootocentral_sync_output_client_id_field', 'wootocentral-sync', 'wootocentral_sync_api' );

    // Add 'Client Secret' field to 'API Credentials' section
    add_settings_field( 'wootocentral_sync_client_secret', esc_html__( 'Client Secret', 'wootocentral_sync' ), 'wootocentral_sync_output_client_secret_field', 'wootocentral-sync', 'wootocentral_sync_api' );

    // Register 'Client ID' and 'Client Secret' settings
    register_setting( 'wootocentral_sync_settings', 'wootocentral_sync_client_id', 'sanitize_text_field' );
    register_setting( 'wootocentral_sync_settings', 'wootocentral_sync_client_secret', 'sanitize_text_field' );
}
add_action( 'admin_init', 'wootocentral_sync_register_settings' );

// Output API section
function wootocentral_sync_output_api_section() {
    echo '<p>' . esc_html__( 'Enter your Microsoft Dynamics NAV/business central API credentials below.', 'wootocentral_sync' ) . '</p>';
}

// Output Client ID field
function wootocentral_sync_output_client_id_field() {
    $client_id = get_option( 'wootocentral_sync_client_id', '' );
    echo '<input type="text" name="wootocentral_sync_client_id" value="' . esc_attr( $client_id ) . '" />';
}

// Output Client Secret field
function wootocentral_sync_output_client_secret_field() {
    $client_secret = get_option( 'wootocentral_sync_client_secret', '' );
    echo '<input type="text" name="wootocentral_sync_client_secret" value="' . esc_attr( $client_secret ) . '" />';
}

// Validate API credentials and display error if invalid
function wootocentral_sync_validate_credentials() {
    $client_id = get_option( 'wootocentral_sync_client_id', '' );
    $client_secret = get_option( 'wootocentral_sync_client_secret', '' );

    // Check if Client ID and/or Client Secret settings are empty
    if ( empty( $client_id ) || empty( $client_secret ) ) {
        // If empty, add error message to display on settings page
        add_settings_error(
            'wootocentral_sync_settings',
            'wootocentral_sync_api_error',
            esc_html__( 'Please enter your Microsoft Dynamics NAV/business central API credentials.', 'wootocentral_sync' )
        );
    } else {
        // If not empty, perform API credential validation
        $valid_credentials = true;

        // Check if credentials are valid
        if ( ! $valid_credentials ) {
            // If invalid, add error message to display on settings page
            add_settings_error(
                'wootocentral_sync_settings',
                'wootocentral_sync_api_error',
                esc_html__( 'Invalid API credentials. Please enter valid credentials.', 'wootocentral_sync' )
            );
        }
    }
}
add_filter( 'admin_init', 'wootocentral_sync_validate_credentials' );