WooCommerce Cart Minimum Plugin

<?php

/**
 * Plugin Name: WooCommerce Cart Minimum
 * Plugin URI: https://codewp.ai
 * Author: CodeWP Assistant
 * Author URI: https://codewp.ai
 * Description: This plugin adds a mandatory minimum amount for WooCommerce cart and prevents checkout if the minimum isn't met.
 */

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

class WC_Cart_Minimum {
    const SETTING_ID = 'wc_setting_cart_minimum';

    public function __construct() {
        add_filter('woocommerce_general_settings', array($this, 'add_cart_minimum_setting'));
        add_action('woocommerce_checkout_process', array($this, 'validate_cart_minimum_on_checkout'));
        add_action('woocommerce_proceed_to_checkout', array($this, 'validate_cart_minimum'), 20);
        add_action('woocommerce_review_order_before_submit', array($this, 'validate_cart_minimum'), 20);
    }

    public function add_cart_minimum_setting($settings) {
        $settings[] = array(
            'id'       => self::SETTING_ID,
            'title'    => __('Cart minimum', 'codewp'),
            'desc_tip' => __('This is the minimum cart total required to proceed to checkout.', 'codewp'),
            'type'     => 'number',
        );

        return $settings;
    }

    public function validate_cart_minimum() {
        $cart_minimum = get_option(self::SETTING_ID);

        if (WC()->cart->total < $cart_minimum) {
            wc_print_notice(
                sprintf(
                    __('Your current order total is %s — you must have an order with a minimum of %s to place your order', 'codewp'),
                    wc_price(WC()->cart->total), wc_price($cart_minimum)
                ),
                'error'
            );
        }
    }

    // Added function to handle checkout validation
    public function validate_cart_minimum_on_checkout() {
        $cart_minimum = get_option(self::SETTING_ID);

        if (WC()->cart->total < $cart_minimum) {
            wc_add_notice(
                sprintf(
                    __('Your current order total is %s — you must have an order with a minimum of %s to proceed to checkout', 'codewp'),
                    wc_price(WC()->cart->total), wc_price($cart_minimum)
                ),
                'error'
            );
        }
    }
}

new WC_Cart_Minimum();